Title of Invention: Substituted heteroaryl aldehyde compounds and methods for their use in increasing tissue oxygenation Abstract: Provided are substituted heteroaryl aldehydes and derivatives thereof that act as allosteric modulators of hemoglobin, methods and intermediates for their preparation, pharmaceutical compositions comprising the modulators, and methods for their use in treating disorders mediate by hemoglobin and disorders that would benefit from increased tissue oxygenation. Detailed Description: Part general_description_paragraphs: Part REFERENCES TO RELATED APPLICATIONS: The present application claims priority to U.S. Provisional Application No. 61/581,063, filed Dec. 28, 2011, and U.S. Provisional Application No. 61/661,327, filed Jun. 18, 2012, the entirety of which are incorporated herein by reference. Part FIELD OF THE INVENTION: The present invention generally relates to substituted heteroaryl aldehydes and derivatives thereof that act as allosteric modulators of hemoglobin, methods and intermediates for their preparation, pharmaceutical compositions comprising the modulators, and methods for their use in treating disorders mediate by hemoglobin and disorders that would benefit from increased tissue oxygenation. Part BACKGROUND OF THE INVENTION: Hemoglobin (Hb) is a tetrameric protein in red blood cells that transports up to four oxygen molecules from the lungs to various tissues and organs throughout the body. Hemoglobin binds and releases oxygen through conformational changes, and is in the tense (T) state when it is unbound to oxygen and in the relaxed (R) state when it is bound to oxygen. The equilibrium between the two conformational states is under allosteric regulation. Natural compounds such as 2,3-bisphosphoglycerate (2,3-BPG), protons, and carbon dioxide stabilize hemoglobin in its de-oxygenated T state, while oxygen stabilizes hemoglobin in its oxygenated R state. Other relaxed R states have also been found, however their role in allosteric regulation has not been fully elucidated. Sickle cell disease is a prevalent disease particularly among those of African and Mediterranean descent. Sickle hemoglobin (HbS) contains a point mutation where glutamic acid is replaced with valine, allowing the T state to become susceptible to polymerization to give the HbS containing red blood cells their characteristic sickle shape. The sickled cells are also more rigid than normal red blood cells, and their lack of flexibility can lead to blockage of blood vessels. Certain synthetic aldehydes have been found to shift the equilibrium from the polymer forming T state to the non-polymer forming R state (Nnamani et al. Chemistry & Biodiversity Vol. 5, 2008 pp. 1762-1769) by acting as allosteric modulators to stabilize the R state through formation of a Schiff base with an amino group on hemoglobin. U.S. Pat. No. 7,160,910 discloses 2-furfuraldehydes and related compounds that are also allosteric modulators of hemoglobin. One particular compound 5-hydroxymethyl-2-furfuraldehyde (5HMF) was found to be a potent hemoglobin modulator both in vitro and in vivo. Transgenic mice producing human HbS that were treated with 5HMF were found to have significantly improved survival times when exposed to extreme hypoxia (5% oxygen). Under these hypoxic conditions, the 5HMF treated mice were also found to have reduced amounts of hypoxia-induced sickled red blood cells as compared to the non-treated mice. A need exists for therapeutics that can shift the equilibrium between the deoxygenated and oxygenated states of Hb to treat disorders that are mediated by Hb or by abnormal Hb such as HbS. A need also exists for therapeutics to treat disorders that would benefit from having Hb in the R state with an increased affinity for oxygen. Such therapeutics would have applications ranging, for example, from sensitizing hypoxic tumor cells that are resistant to standard radiotherapy or chemotherapy due to the low levels of oxygen in the cell, to treating pulmonary and hypertensive disorders, and to promoting wound healing. Part BRIEF SUMMARY OF THE INVENTION: The present invention provides, in one aspect, allosteric modulators of hemoglobin. In another aspect, provided are pharmaceutical compositions comprising the allosteric modulators disclosed herein. In other aspects, provided are methods for treating disorders mediated by hemoglobin and methods for increasing tissue oxygenation for treating disorders that would benefit from increased oxygenation, such methods comprising administering the allosteric modulators disclosed herein to a subject in need thereof. In still other aspects, provided are methods for preparing the allosteric modulators disclosed herein. These and other embodiments of the invention are more fully described in the description that follows. Part DETAILED DESCRIPTION OF THE INVENTION: Part I. Definitions: As used herein, the below terms have the following meanings unless specified otherwise. The abbreviations used herein are conventional, unless otherwise defined: aq=aqueous; Boc=t-butylcarboxy, (Boc)2O=di-tert-butyl dicarbonate, ° C.=degrees celcius, mCPBA=m-chloroperoxybenzoic acid, DCM=dichloromethane (CH2Cl2), DIBAL=diisobutylaluminum hydride, DIEA=diisopropylethyl amine; DMF=dimethyl formamide, EtOAc=ethyl acetate, EtOH=ethanol, g=gram, H2=hydrogen; H2O=water; HBr=hydrogen bromide; HCl=hydrogen chloride, HPLC=high pressure liquid chromatography, h hour, LAH=lithium aluminum hydride (LiAlH4); MeCN=acetonitrile; LRMS=Low Resolution Mass Spectrum MS=Mass Spectrum, m/z=mass to charge ratio, MHz=Mega Hertz, MeOH=methanol, μM=micromolar, μL=microliter, mg=milligram, mM=millimolar, mmol=millimole, mL=milliliter, min=minute, M=molar, Na2CO3=sodium carbonate, ng=nanogram, N=Normal, NMR=nuclear magnetic resonance, Pd/C=palladium on carbon, rp=reverse phase, sat=saturated, rt=room temperature, SEM=(2-(trimethylsilyl)ethoxy)methyl, TEA=triethylamine, THF=tetrahydrofuran, TFA=trifluoroacetic acid, TLC=thin layer chromatography, and TMS=trimethylsilyl. It is noted here that as used in this specification and the appended claims, the singular forms “a,” “an,” and “the” include plural reference unless the context clearly dictates otherwise. “Alkoxy” refers to —O(alkyl) where alkyl as defined herein. Representative examples of alkoxy groups include methoxy, ethoxy, t-butoxy, and the like. “Alkyl,” by itself or as part of another substituent, means, unless otherwise stated, a straight or branched chain, fully saturated aliphatic hydrocarbon radical having the number of carbon atoms designated. For example, “C1-8alkyl” refers to a hydrocarbon radical straight or branched, containing from 1 to 8 carbon atoms that is derived by the removal of one hydrogen atom from a single carbon atom of a parent alkane. Alkyl includes branched chain isomers of straight chain alkyl groups such as isopropyl, t-butyl, isobutyl, sec-butyl, and the like. Representative alkyl groups include straight and branched chain alkyl groups having 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12 carbon atoms. Further representative alkyl groups include straight and branched chain alkyl groups having 1, 2, 3, 4, 5, 6, 7 or 8 carbon atoms. “Alkenyl” refers to a linear monovalent hydrocarbon radical or a branched monovalent hydrocarbon radical having the number of carbon atoms indicated in the prefix and containing at least one double bond, but no more than three double bonds. For example, C2-8alkenyl is meant to include, ethenyl, propenyl, 1,3-butadienyl and the like. “Alkynyl” means a linear monovalent hydrocarbon radical or a branched monovalent hydrocarbon radical containing at least one triple bond and having the number of carbon atoms indicated in the prefix. The term “alkynyl” is also meant to include those alkyl groups having one triple bond and one double bond. For example, C2-8alkynyl is meant to include ethynyl, propynyl and the like. The term “allosteric modulators” refers to compounds that bind to hemoglobin to modulate its affinity for oxygen. In one group of embodiments, the allosteric modulators act to stabilize or destabilize a particular hemoglobin conformation. In one group of embodiments, the modulators stabilize the relaxed R state. In other embodiments, the modulators destabilize the tense T state. In one group of embodiments, the allosteric modulators can destabilize one conformation while stabilizing another. In some such embodiments, the modulators stabilize a relaxed R state and destabilize the tense T state. The modulators, in addition to modulating the affinity of hemoglobin for oxygen, may also confer additional properties to hemoglobin such as increasing its solubility. The present disclosure is not intended to be limited to the mechanism by which the allosteric modulators interact with and regulate hemoglobin. In one group of embodiments, the allosteric modulators inhibit the polymerization of HbS and the sickling of red blood cells. In one group of embodiments, the binding of the allosteric modulators provided herein to hemoglobin can occur through covalent or non-covalent interactions. In one embodiment, the allosteric modulators react through its aldehyde substituent with an amine group on a hemoglobin amino acid side chain to form a Schiff base. “Amino” refers to a monovalent radical —NH2. “Aryl” by itself or as part of another substituent refers to a polyunsaturated, aromatic, hydrocarbon group containing from 6 to 14 carbon atoms, which can be a single ring or multiple rings (up to three rings) which are fused together or linked covalently. Thus the phrase includes, but is not limited to, groups such as phenyl, biphenyl, anthracenyl, naphthyl by way of example. Non-limiting examples of aryl groups include phenyl, 1-naphthyl, 2-naphthyl and 4-biphenyl. “Bond” when used as an element in a Markush group means that the corresponding group does not exist, and the groups of both sides are directly linked. “Cycloalkyl” refers to a saturated or partially saturated cyclic group of from 3 to 14 carbon atoms and no ring heteroatoms and having a single ring or multiple rings including fused, bridged, and spiro ring systems. The term “cycloalkyl” includes cycloalkenyl groups, a partially saturated cycloalkyl ring having at least one site of >C═C< ring unsaturation. Examples of cycloalkyl groups include, for instance, adamantyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclooctyl, and cyclohexenyl. “Cv′-v′cycloalkyl” refers to cycloalkyl groups having u′ to v′ carbon atoms as ring members. “Cu′-v′cycloalkenyl” refers to cycloalkenyl groups having u′ to v′ carbon atoms as ring members. The term “hemoglobin” as used herein refers to any hemoglobin protein, including normal hemoglobin (Hb) and sickle hemoglobin (HbS). “Heteroaryl” refers to a cyclic or polycyclic radical having at least one aromatic ring and from one to five ring heteroatom selected from N, O, and S, and optionally one or more oxo (═O) substituents attached to one or more carbon ring atoms, and wherein the nitrogen and sulfur ring atoms are optionally oxidized. A heteroaryl group can be attached to the remainder of the molecule through a heteroatom or through a carbon atom and can contain 5 to 10 carbon atoms. Heteroaryl groups include polycyclic aromatic ring(s) fused to non-aromatic cycloalkyl or heterocycloalkyl groups, and where the point of attachment to the remainder of the molecule can be through any suitable ring atom of any ring. In a polycyclic heteroaryl group, the ring heteroatom(s) can be in either an aromatic or non-aromatic ring or both. The term “aromatic ring” include any ring having at least one planar resonance structure where 2n+2 pi electrons are delocalized about the ring. Examples of heteroaryl groups include, but are not limited to, imidazopyridinyl groups, pyrrolopyridinyl groups, pyrazolopyridinyl groups, triazolopyridinyl groups, pyrazolopyrazinyl groups, pyridinyl groups, pyrazinyl groups, oxazolyl groups, imidazolyl groups, triazolyl groups, tetrazolyl groups, pyrazolyl groups, quinolinyl groups, isoquinolinyl groups, indazolyl groups, benzooxazolyl groups, naphthyridinyl groups, and quinoxalinyl groups. Other non-limiting examples of heteroaryl groups include xanthine, hypoxanthine, 5-benzothiazolyl, purinyl, 2-benzimidazolyl, benzopyrazolyl, 5-indolyl, azaindole, 1-isoquinolyl, 5-isoquinolyl, 2-quinoxalinyl, 5-quinoxalinyl, 3-quinolyl, 6-quinolyl 1-pyrrolyl, 2-pyrrolyl, 3-pyrrolyl, 1-pyrazolyl, 3-pyrazolyl, 2-imidazolyl, 4-imidazolyl, pyrazinyl, 2-oxazolyl, 4-oxazolyl, 5-oxazolyl, 3-isoxazolyl, 4-isoxazolyl, 5-isoxazolyl, 2-thiazolyl, 4-thiazolyl, 5-thiazolyl, 2-furyl, 3-furyl, 2-thienyl, 3-thienyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrimidyl and 4-pyrimidyl. “Bicyclic heteroaryl” refers to a heteroaryl radical that contains two rings. The term “heterocycloalkyl” refers to a cycloalkyl group containing at least one ring heteroatom and optionally one or more oxo substituents. As used herein, the term “heteroatom” is meant to include oxygen (O), nitrogen (N), and sulfur (S), wherein the heteroatoms are optionally oxidized, and the nitrogen atom(s) are optionally quaternized. Each heterocycle can be attached at any available ring carbon or heteroatom. Each heterocycle may have one or more rings. When multiple rings are present, they can be fused together. Each heterocycle typically contains 1, 2, 3, 4 or 5, independently selected heteroatoms. Preferably, these groups contain 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 carbon atoms, 0, 1, 2, 3, 4 or 5 nitrogen atoms, 0, 1 or 2 sulfur atoms and 0, 1 or 2 oxygen atoms. More preferably, these groups contain 1, 2 or 3 nitrogen atoms, 0-1 sulfur atoms and 0-1 oxygen atoms. Non-limiting examples of heterocycle groups include morpholin-3-one, piperazine-2-one, piperazin-1-oxide, piperidine, morpholine, piperazine, isoxazoline, pyrazoline, imidazoline, pyrrolidine, and the like. “Halo” or “halogen” by themselves or as part of another substituent, mean, unless otherwise stated, a fluorine, chlorine, bromine, or iodine atom. Additionally, terms such as “haloalkyl”, are meant to include alkyl in which one or more hydrogen is substituted with halogen atoms which can be the same or different, in a number ranging from one up to the maximum number of halogens permitted e.g. for alkyl, (2 m′+1), where m′ is the total number of carbon atoms in the alkyl group. For example, the term “haloC1-8alkyl” is meant to include difluoromethyl, trifluoromethyl, 2,2,2-trifluoroethyl, 4-chlorobutyl, 3-bromopropyl, and the like. The term “haloalkenyl”, and “haloalkynyl” refers to alkenyl and alkynyl radicals having one or more halogen atoms. Additionally, term “haloalkoxy” refers to an alkoxy radical substituted with one or more halogen atoms. In one group of embodiments, the haloakyl, haloalkenyl, haloalkynyl, and haloalkoxy groups have from one to 5 or from one to 3 halo atoms. Examples of haloalkoxy groups include difluoromethoxy and trifluoromethoxy. In one group of embodiments, the halo atoms of the haloalkenyl and haloalkynyl groups are attached to the aliphatic portions of these groups. The terms “optional” or “optionally” as used throughout the specification means that the subsequently described event or circumstance may but need not occur, and that the description includes instances where the event or circumstance occurs and instances in which it does not. For example, “heteroaryl group optionally substituted with an alkyl group means that the alkyl may but need not be present, and the description includes situations where the heteroaryl group is substituted with an alkyl group and situations where the heteroaryl group is not substituted with the alkyl group. “Oxo” refers to the divalent atom ═O. In each of the above embodiments designating a number of atoms e.g. “C1-8” is meant to include all possible embodiments that have one fewer atom. Non-limiting examples include C1-4, C1-5, C1-6, C1-7, C2-8, C2-7, C3-8, C3-7 and the like. The term “pharmaceutically acceptable salts” is meant to include salts of the active compounds which are prepared with relatively nontoxic acids or bases, depending on the particular substituents found on the compounds described herein. When compounds of the present invention contain relatively acidic functionalities, base addition salts can be obtained by contacting the neutral form of such compounds with a sufficient amount of the desired base, either neat or in a suitable inert solvent. Examples of salts derived from pharmaceutically-acceptable inorganic bases include aluminum, ammonium, calcium, copper, ferric, ferrous, lithium, magnesium, manganic, manganous, potassium, sodium, zinc and the like. Salts derived from pharmaceutically-acceptable organic bases include salts of primary, secondary and tertiary amines, including substituted amines, cyclic amines, naturally-occurring amines and the like, such as arginine, betaine, caffeine, choline, N,N′-dibenzylethylenediamine, diethylamine, 2-diethylaminoethanol, 2-dimethylaminoethanol, ethanolamine, ethylenediamine, N-ethylmorpholine, N-ethylpiperidine, glucamine, glucosamine, histidine, hydrabamine, isopropylamine, lysine, methylglucamine, morpholine, piperazine, piperidine, polyamine resins, procaine, purines, theobromine, triethylamine, trimethylamine, tripropylamine, tromethamine and the like. When compounds of the present invention contain relatively basic functionalities, acid addition salts can be obtained by contacting the neutral form of such compounds with a sufficient amount of the desired acid, either neat or in a suitable inert solvent. Examples of pharmaceutically acceptable acid addition salts include those derived from inorganic acids like hydrochloric, hydrobromic, nitric, carbonic, monohydrogencarbonic, phosphoric, monohydrogenphosphoric, dihydrogenphosphoric, sulfuric, monohydrogensulfuric, hydriodic, or phosphorous acids and the like, as well as the salts derived from relatively nontoxic organic acids like acetic, propionic, isobutyric, malonic, benzoic, succinic, suberic, fumaric, mandelic, phthalic, benzenesulfonic, p-tolylsulfonic, citric, tartaric, methanesulfonic, and the like. Also included are salts of amino acids such as arginate and the like, and salts of organic acids like glucuronic or galactunoric acids and the like (see, e.g., Berge, S. M. et al., “Pharmaceutical Salts,” Journal of Pharmaceutical Science, 66:1-19, 1977). Certain specific compounds of the present invention contain both basic and acidic functionalities that allow the compounds to be converted into either base or acid addition salts. The neutral forms of the compounds may be regenerated by contacting the salt with a base or acid and isolating the parent compound in the conventional manner. The parent form of the compound differs from the various salt forms in certain physical properties, such as solubility in polar solvents, but otherwise the salts are equivalent to the parent form of the compound for the purposes of the present invention. The term “pharmaceutically acceptable carrier or excipient” means a carrier or excipient that is useful in preparing a pharmaceutical composition that is generally safe, non-toxic and neither biologically nor otherwise undesirable, and includes a carrier or excipient that is acceptable for veterinary use as well as human pharmaceutical use. A “pharmaceutically acceptable carrier or excipient” as used in the specification and claims includes both one and more than one such carrier or excipient. The terms “pharmaceutically effective amount”, “therapeutically effective amount” or “therapeutically effective dose” refers to the amount of the subject compound that will elicit the biological or medical response of a tissue, system, animal or human that is being sought by the researcher, veterinarian, medical doctor or other clinician. The term “therapeutically effective amount” includes that amount of a compound that, when administered, is sufficient to prevent development of, or alleviate to some extent, one or more of the symptoms of the condition or disorder being treated. The therapeutically effective amount will vary depending on the compound, the disorder or condition and its severity and the age, weight, etc., of the mammal to be treated. “Protecting group” refers to a group of atoms that, when attached to a reactive functional group in a molecule, mask, reduce or prevent the reactivity of the functional group. Typically, a protecting group may be selectively removed as desired during the course of a synthesis. Examples of protecting groups can be found in Greene and Wuts, Protective Groups in Organic Chemistry, 3rd Ed., 1999, John Wiley & Sons, NY and Harrison et al., Compendium of Synthetic Organic Methods, Vols. 1-8, 1971-1996, John Wiley & Sons, NY. Representative amino protecting groups include, but are not limited to, formyl, acetyl, trifluoroacetyl, benzyl, benzyloxycarbonyl (“CBZ”), tert-butoxycarbonyl (“Boc”), trimethylsilyl (“TMS”), 2-trimethylsilyl-ethanesulfonyl (“TES”), trityl and substituted trityl groups, allyloxycarbonyl, 9-fluorenylmethyloxycarbonyl (“FMOC”), nitro-veratryloxycarbonyl (“NVOC”) and the like. Representative hydroxy protecting groups include, but are not limited to, those where the hydroxy group is either acylated or alkylated such as benzyl and trityl ethers, as well as alkyl ethers, tetrahydropyranyl ethers, trialkylsilyl ethers (e.g., TMS or TIPPS groups) and allyl ethers. The term “aldehyde protecting group” refers to any known protecting group used to mask the aldehyde functionality. Aldehyde protecting groups include acetals and hemiacetals. The acetals and hemiacetals can be prepared from C1-8 alcohols or C2-8 diols. In one group of embodiments, the aldehyde protecting group is a five or six membered cyclic acetal formed from condensation of the aldehyde with ethylene or propylene glycol. In another group of embodiments the aldehyde protecting group is an imine or hydroxyimine. The aldehyde protecting groups of the present disclosure also include prodrug groups that convert the aldehyde to a prodrug, where the aldehyde is formed in vivo as the active agent under physiological conditions upon administration of the prodrug. The prodrug group can also serve to increase the bioavailability of the aldehyde. In one group of embodiments, the prodrug group is hydrolyzed in vivo to the aldehyde. In one group of embodiments, the aldehyde protecting group is a thiazolidine or N-acetylthiazolidine prodrug group. In one group of embodiments, the aldehyde protecting group is a thiazolidine prodrug group disclosed in U.S. Pat. No. 6,355,661. In one group of embodiments the modulators provided herein are condensed with L-cysteine or a L-cysteine derivative to form the corresponding thiazolidine protected aldehyde prodrug. In one group of embodiments, the thiazolidine has the formula wherein R11 is selected from the group consisting of OH, alkoxy, substituted alkoxy, cycloalkoxy, substituted cycloalkoxy, aryloxy, substituted aryloxy, heteroaryloxy, substituted heteroaryloxy, N(R13)2 where R13 is independently H, alkyl, substituted alkyl, alkenyl, substituted alkenyl, aryl, substituted aryl, heteroaryl, and substituted heteroaryl; R12 is H or L-R14, where L is carbonyl or sulfonyl; R14 is selected from the group consisting of alkyl, substituted alkyl, aryl, substituted aryl, heteroaryl, and substituted heteroaryl; the wavy line signifies the point of attachment to the phenyl ring of the allosteric modulators disclosed herein; and the term “substituted” refers to substitution by one or more substituents selected from the group consisting of COOH, CHO, oxyacyl, acyloxy, cycloacyloxy, phenol, phenoxy, pyridinyl, pyrrolidinyl, amino, amido, hydroxy, alkoxy, cycloalkoxy, F, Cl, Br, NO2, cyano, sulfuryl, and the like. In one group of embodiments, provided are modulators having a thiazolidine protecting group where R11 is alkoxy and R12 is H, or where R11 is OH and R12 is —C(O)alkyl, or where R11 is NH (heteroaryl) and R12 is —C(O)alkyl. The term “sickle cell disease” refers to diseases mediated by sickle hemoglobin (HbS) that results from a single point mutation in the hemoglobin (Hb). Sickle cell diseases includes sickle cell anemia, sickle-hemoglobin C disease (HbSC), sickle beta-plus-thalassaemia (HbS/β+) and sickle beta-zero-thalassaemia)(HbS/(β0). The “subject” is defined herein to include animals such as mammals, including, but not limited to, primates (e.g., humans), cows, sheep, goats, horses, dogs, cats, rabbits, rats, mice and the like. In preferred embodiments, the subject is a human. “Tautomer” refers to alternate forms of a molecule that differ in the position of a proton, such as enol-keto and imine-enamine tautomers, or the tautomeric forms of heteroaryl groups containing a —N═C(H)—NH— ring atom arrangement, such as pyrazoles, imidazoles, benzimidazoles, triazoles, and tetrazoles. A person of ordinary skill in the art would recognize that other tautomeric ring atom arrangements are possible. The terms “treat”, “treating”, “treatment” and grammatical variations thereof as used herein, includes partially or completely delaying, alleviating, mitigating or reducing the intensity, progression, or worsening of one or more attendant symptoms of a disorder or condition and/or alleviating, mitigating or impeding one or more causes of a disorder or condition. Treatments according to the invention may be applied preventively, prophylactically, pallatively or remedially. The symbol > when used in connection with a substituent signifies that the substituent is a divalent substituent attached to two different atoms through a single atom on the substituent. The term “wavy line” signifies the point of attachment of the substituent to the remainder of the molecule. When the wavy line is not depicted as being specifically appended to a specific ring atom, the point of attachment can be to any suitable atom of the substituent. For example, the wavy line in the following structure: is intended to include, as the point of attachment, any of the six substitutable carbon atoms. Compounds that have the same molecular formula but differ in the nature or sequence of bonding of their atoms or the arrangement of their atoms in space are termed “isomers”. Isomers that differ in the arrangement of their atoms in space are termed “stereoisomers”. “Stereoisomer” and “stereoisomers” refer to compounds that exist in different stereoisomeric forms if they possess one or more asymmetric centers or a double bond with asymmetric substitution and, therefore, can be produced as individual stereoisomers or as mixtures. Stereoisomers include enantiomers and diastereomers. Stereoisomers that are not mirror images of one another are termed “diastereomers” and those that are non-superimposable mirror images of each other are termed “enantiomers”. When a compound has an asymmetric center, for example, it is bonded to four different groups, a pair of enantiomers is possible. An enantiomer can be characterized by the absolute configuration of its asymmetric center and is described by the R- and S-sequencing rules of Cahn and Prelog, or by the manner in which the molecule rotates the plane of polarized light and designated as dextrorotatory or levorotatory (i.e., as (+) or (−)-isomers respectively). A chiral compound can exist as either individual enantiomer or as a mixture thereof. A mixture containing equal proportions of the enantiomers is called a “racemic mixture”. Unless otherwise indicated, the description is intended to include individual stereoisomers as well as mixtures. The methods for the determination of stereochemistry and the separation of stereoisomers are well-known in the art (see discussion in Chapter 4 of ADVANCED ORGANIC CHEMISTRY, 4th edition J. March, John Wiley and Sons, New York, 1992) differ in the chirality of one or more stereocenters. The compounds of the present invention may also contain unnatural proportions of atomic isotopes at one or more of the atoms that constitute such compounds. For example, the compounds may be radiolabeled with isotopes, such as for example deuterium (2H), tritium (3H), iodine-125 (125I) or carbon-14 (14C). All isotopic variations of the compounds of the present invention, whether radioactive or not, are intended to be encompassed within the scope of the present invention. Unless indicated otherwise, the nomenclature of substituents that are not explicitly defined herein are arrived at by naming the terminal portion of the functionality followed by the adjacent functionality toward the point of attachment. For example, the substituent “alkoxyalkyl” refers to an alkyl group that is substituted with alkoxy and “hydroxyalkyl” refers to an alkyl group that is substituted with hydroxy. For both of these substituents, the point of attachment is at the alkyl group. It is understood that the definitions and formulas provided herein are not intended to include impermissible substitution patterns (e.g., methyl substituted with 5 fluoro groups). Such impermissible substitution patterns are well known to the skilled artisan. Part II. Hemoglobin Modulators: In one group of embodiments, provided is a compound of Formula (I): or a tautomer or pharmaceutically acceptable salt thereof, wherein Q is selected from the group consisting of aryl, heteroaryl, and heterocycloalkyl, each optionally substituted with one to three Ra; Y is O or CR1aR1b, where R1a is H or halo and R1b is selected from the group consisting of H, halo, and OH; X is selected from the group consisting of O, >CH(CH2)nR8, and C(R9)2 where n is 0 or 1, R8 is OH, and R9 is independently H or halo; or Y—X taken together is —NHC(O)— or —C(O)NH—; R2, R3, R4, and R5 are independently absent or selected from the group consisting of hydrogen, halo, Rb, ORd, O(CH2)zORd, O(CH2)zNRdRd, OC(O)Re, SRd, CN, NO2, CO2Rd, CONRdRd, C(O)Rd, OC(O)NRdRd, NRdRd, NRdC(O)Re, NRdC(O)2Re, NRdC(O)NRdRd, S(O)Re, S(O)2Re, NRdS(O)2Re, S(O)2NRdRd, and N3 where z is 0, 1, 2, or 3; or R5 is —(CH2)pR5a where p is 0 or 1 and R5a is OH; R6 and R7 together form oxo or an aldehyde protecting group, or R6 together with R1b, R8, or R5 forms a cyclic ether where one of R1b, R8, or R5a is O, R6 is a bond, and R7 is selected from the group consisting of OH, C1-8alkoxy, and haloC1-8alkoxy; T1, T2, T3, and T4 are independently C or N provided that at least one of T1, T2, T3, and T4 is N and at least one of T1, T2, T3, and T4 is C; each Ra is independently selected from the group consisting of halo, Rb, ORd, O(CH2)uORd, O(CH2)uNRdRd, O(CH2)uNRdC(O)Re, O(CH2)uNRdC(O)2Re, O(CH2)uNRdS(O)2Re, NH2, —(CH2)kOC(O)Re, —(CH2)kSRd, CN, NO2, —(CH2)kCO2(C1-8alkyl)OH, —(CH2)kCO2(C1-8alkyl)(heteroaryl)C(O)(C1-8alkyl), —(CH2)kCO2Rd, —(CH2)kCONRdRd, —(CH2)kNRdC(O)Re, —(CH2)kNRdC(O)2Re, —(CH2)kC(O)Rd, —(CH2)kOC(O)NRdRd, —NRd(CH2)uORd, —NRd(CH2)uNRdRd, —NRd(CH2)uNRdC(O)Re, —NRd(CH2)uNRdC(O)2Re, —NRd(CH2)uNRdS(O)2Re, —(CH2)kNRdC(O)Re, —(CH2)kNRdC(O)2Rd, —(CH2)kNRdC(O)NRdRd, —(CH2)kS(O)Re, —(CH2)kS(O)2Re, —(CH2)kNRdS(O)2Re, —C(O)(CH2)kNRdS(O)2Re, —(CH2)kC(O)NRdS(O)2Re, —(CH2)kS(O)2NRdRd, N3, —(CH2)karyl optionally substituted with one to three Rc, —NRd(CH2)karyl optionally substituted with one to three Rc, —(CH2)kheteroaryl optionally substituted with one to three Rc, —NRd(CH2)kheteroaryl optionally substituted with one to three Rc, —(CH2)kheterocycloalkyl optionally substituted with one to three Rc, and —NRd(CH2)kheterocycloalkyl optionally substituted with one to three Rc where k is 0, 1, 2, 3, 4, 5, or 6 and u is 1, 2, 3, 4, 5, or 6; each Rb is independently selected from the group consisting of C1-8alkyl, C2-8alkenyl, and C2-8alkynyl, each optionally independently substituted with one to three halo, ORd, or NRdRd; each Rc is independently selected from the group consisting of halo, C1-8alkyl, haloC1-8alkyl, C2-8alkenyl, haloC2-8alkenyl, C2-8alkynyl, haloC2-8alkynyl, (CH2)mORf, OC(O)Rg, SRf, CN, NO2, (CH2)mCO2Rf, CONRfRf, C(O)Rf, OC(O)NRfRf, (CH2)mNRfRf, NRfC(O)Rg, NRfC(O)2Rg, NRfC(O)NRfRf, S(O)Rg, S(O)2Rg, NRfS(O)2Rg, S(O)2NRfRf, N3, (Rf)mSiC1-8alkyl, heteroaryl optionally substituted with one to three Rh, cycloalkyl optionally substituted with one to three Rh, and heterocycloalkyl optionally substituted with one to three Rh where m is selected from the group consisting of 0, 1, 2, 3, 4, 5, and 6; each Rh is independently selected from the group consisting of halo, C1-8allyl, haloC1-8alkyl, ORj, OC(O)R, SRj, NO2, CO2Rj, CONRjRj, C(O)Rj, OC(O)NRjRj, NRjRj, NRjC(O)Rt, NRjC(O)2Rt, NRjC(O)NRjRj, S(O)Rt, S(O)2Rt, NRjS(O)2Rt, and S(O)2NRjRj; Rd, Rf, and Rj are each independently selected from the group consisting of hydrogen, C1-8 alkyl, haloC1-8alkyl, C2-4 alkenyl, haloC2-8alkenyl, C2-4 alkynyl, and haloC2-8alkynyl; and Re, Rg, and Rt are each independently selected from the group consisting of C1-8alkyl, haloC1-8alkyl, C2-4 alkenyl, haloC2-8alkenyl, C2-8 alkynyl, and haloC2-8alkynyl. In one group of embodiments, X and Y are not both O. In one group of embodiments, when X is O, R1b is not OH. In one group of embodiments, when Y is O, and n is O, R8 is not OH. In one group of embodiments, z is 0. In another group of embodiments, z is 1. In yet another group of embodiments, z is 2. In still another group of embodiments, z is 3. In one group of embodiments, when R6 and R7 together are oxo, Y is CH2, X is O or CH2, and R5 is H, halo, OH, CHO, or OCH3, then Q is V or W. In one group of embodiments, the compound is not In one group of embodiments, provided is a compound of Formula (Ia): or a tautomer or pharmaceutically acceptable salt thereof, wherein Q is selected from the group consisting of aryl, heteroaryl, and heterocycloalkyl, each optionally substituted with one to three Ra; Y is O or CR1aR1b, where R1a is H or halo and R1b is selected from the group consisting of H, halo, and OH; X is selected from the group consisting of O, >CH(CH2)nR8, and C(R9)2 where n is 0 or 1, R8 is OH, and R9 is independently H or halo; or Y—X taken together is —NHC(O)— or —C(O)NH—; R2, R3, R4, and R5 are independently absent or selected from the group consisting of hydrogen, halo, Rb, ORd, OC(O)Re, SRd, CN, NO2, CO2Rd, CONRdRd, C(O)Rd, OC(O)NRdRd, NRdRd, NRdC(O)2Re, NRdC(O)2Re, NRdC(O)NRdRd, S(O)Re, S(O)2Re, NRdS(O)2Re, S(O)2NRdRd, and N3; or R5 is —(CH2)pR5a where p is 0 or 1 and R5a is OH; R6 and R7 together form oxo or an aldehyde protecting group, or R6 together with R1b, R8, or R5 forms a cyclic ether where one of R1b, R8, or R5a is O, R6 is a bond, and R7 is selected from the group consisting of OH, C1-8alkoxy, and haloC1-8alkoxy; T1, T2, T3, and T4 are independently C or N provided that at least one of T1, T2, T3, and T4 is N and at least one of T1, T2, T3, and T4 is C; each Ra is independently selected from the group consisting of halo, Rb, ORd, OC(O)Re, SRd, CN, NO2, CO2Rd, CONRdRd, C(O)Rd, OC(O)NRdRd, NRdC(O)Re, NRdC(O)2Rd, NRdC(O)NRdRd, S(O)Re, S(O)2Re, NRdS(O)2Re, S(O)2NRdRd, N3, aryl optionally substituted with one to three Rc, heteroaryl optionally substituted with one to three Rc, and heterocycloalkyl optionally substituted with one to three Rc; each Rb is independently selected from the group consisting of C1-8alkyl, C2-8alkenyl, and C2-8alkynyl, each optionally independently substituted with one to three halo, ORd, or NRdRd; each Rc is independently selected from the group consisting of halo, C1-8alkyl, haloC1-8alkyl, C2-8alkenyl, haloC2-8alkenyl, C2-8alkynyl, haloC2-8alkynyl, (CH2)mORf, OC(O)Rg, SRf, CN, NO2, CO2Rf, CONRfRf, C(O)Rf, OC(O)NRfRf, (CH2)2NRfRf, NRfC(O)Rg, NRfC(O)2Rg, NRfC(O)NRfRf, S(O)Rg, S(O)2Rg, NRfS(O)2Rg, S(O)2NRfRf, and N3 where m is selected from the group consisting of 0, 1, 2, 3, 4, 5, and 6; each Rd and Rf is independently selected from the group consisting of hydrogen, C1-8alkyl, haloC1-8alkyl, C2-8alkenyl, haloC2-8alkenyl, C2-8alkynyl, and haloC2-8alkynyl; and each Re and Rg is independently selected from the group consisting of C1-8alkyl, haloC1-8alkyl, C2-8 alkenyl, haloC2-8alkenyl, C2-8alkynyl, and haloC2-8alkynyl; provided that X and Y are not both O; provided that when X is O, R1b is not OH; provided that when Y is O, and n is 0, R8 is not OH. In one group of embodiments, the compound is not: In one group of embodiments, provided is a compound having Formula (Ia) or a tautomer or pharmaceutically acceptable salt thereof. In one group of embodiments, provided is a compound having Formula (Ib): or a tautomer or pharmaceutically acceptable salt thereof. In one group of embodiments, provided is a compound having Formula (Ic): or a tautomer or pharmaceutically acceptable salt thereof. In one group of embodiments, provided is a compound having Formula (Id): or a tautomer or pharmaceutically acceptable salt thereof. In one group of embodiments, at least two of T1, T2, T3, and T4 are N. In one group of embodiments, provided is a compound having Formula (Ie), (If), (Ig), or (Ih): or a tautomer or pharmaceutically acceptable salt thereof. In one group of embodiments, provided is a compound having Formula (If): or a tautomer or pharmaceutically acceptable salt thereof. In one group of embodiments, provided is a compound having Formula (Ig): or a tautomer or pharmaceutically acceptable salt thereof. In one group of embodiments, provided is a compound having Formula (h): or a tautomer or pharmaceutically acceptable salt thereof. In one group of embodiments, R6 and R7 together form oxo. In one group of embodiments, R6 and R7 together form a thiazolidine. In one group of embodiments, R6 together with R1b, R8, or R5 forms a cyclic ether where one of R1b, R8, or R5a is O, R6 is a bond, and R7 is selected from the group consisting of OH, C1-8alkoxy, and haloC1-8alkoxy. In one group of embodiments, provided is a compound having Formula (Ii): or a tautomer or pharmaceutically acceptable salt thereof, wherein R10 is selected from the group consisting of H, C1-8alkyl, and haloC1-8alkyl. In one group of embodiments, provided is a compound having Formula (Ij): or a tautomer or pharmaceutically acceptable salt thereof, wherein R10 is selected from the group consisting of H, C1-8alkyl, and haloC1-8alkyl. In one group of embodiments, provided is a compound having Formula (Ik): or a tautomer or pharmaceutically acceptable salt thereof, wherein R10 is selected from the group consisting of H, C1-8alkyl, and haloC1-8 alkyl. In one group of embodiments, provided is a compound having Foimula or a tautomer or pharmaceutically acceptable salt thereof. In one group of embodiments, provided is a compound having Formula (Im): or a tautomer or pharmaceutically acceptable salt thereof. In one group embodiments, at least one Ra is heteroaryl optionally substituted with one to three Rc. In one group of embodiments at least one Ra is heteroaryl attached to Q at the ring atom adjacent to ring atom bearing Y. In one group of embodiments at least one Ra is heteroaryl substituted with at least one C1-8alkyl. In one group of embodiments at least one Ra heteroaryl is substituted with at least one methyl. In one group of embodiments at least one Ra is pyrazolyl substituted with at least one C1-8alkyl. In one group of embodiments at least one Ra is pyrazoyl substituted with at least one C1-8alkyl. In one group of embodiments, at least one Ra is pyrazol-5-yl. In one group of embodiments, at least one Ra is 4-methyl-pyrazol-5-yl. In one group of embodiments, Q is a heteroaryl or heterocycloalkyl group optionally substituted with one to three Ra. In one group of embodiments, Q is a bicyclic heteroaryl or heterocycloalkyl group optionally substituted with one to three Ra. In one group of embodiments, Q is a bicyclic heteroaryl group optionally substituted with one to three Ra. In one group of embodiments, Q is a bicyclic heteroaryl group substituted with one to three Ra. In one group of embodiments, Q is isoquinolin-4-yl optionally substituted with one to three Ra wherein at least one Ra is heteroaryl optionally substituted with one to three Rc. In one group of embodiments at least one Ra is heteroaryl attached to said Q at the ring atom adjacent to ring atom bearing Y. In one group of embodiments at least one Ra is heteroaryl substituted with at least one C1-8alkyl. In one group of embodiments at least one Ra heteroaryl is substituted with at least one methyl. In one group of embodiments at least one Ra is pyrazolyl substituted with at least one C1-8alkyl. In one group of embodiments at least one Ra is pyrazoyl substituted with at least one methyl. In one group of embodiments, Ra is pyrazol-5-yl. In one group of embodiments, Ra is 4-methyl-pyrazol-5-yl. In one group of embodiments, Q is selected from the group consisting of and naphthalene containing two to four ring nitrogen atoms, each optionally substituted with one to three Ra and wherein the wavy line signifies the point of attachment to Y. In one group of embodiments, Q is selected from the group consisting of wherein Q is optionally substituted with one to three Ra. In one group of embodiments, Q is selected from the group consisting of In one group of embodiments, Q is substituted with CONRdRd, NRdRd, or heteroaryl optionally substituted with one to three Rc. In one group of embodiments, Q is substituted with heteroaryl having one to two nitrogen ring atoms. In one group of embodiments, Q is not unsubstituted pyridin-2-yl, unsubstituted pyridin-3-yl, or unsubstituted pyridine-4-yl. In one group of embodiments, Q is pyridin-2-yl, pyridin-3-yl, or pyridine-4-yl, each of which is substituted with one to three Rc. In one group of embodiments, Q is pyridin-2-yl, pyridin-3-yl, or pyridine-4-yl, said Q is optionally substituted with CN or CONRdRd. In one group of embodiments, Q is pyridin-2-yl, pyridin-3-yl, or pyridine-4-yl, said Q is optionally substituted with one to three Ra wherein at least one Ra is heteroaryl optionally substituted with one to three Rc. In one group of embodiments at least one Ra is heteroaryl attached to said Q at the ring atom adjacent to ring atom bearing Y. In one group of embodiments at least one Ra is heteroaryl substituted with at least one C1-8alkyl. In one group of embodiments at least one Ra heteroaryl is substituted with at least one methyl. In one group of embodiments at least one Ra is pyrazolyl substituted with at least one C1-8alkyl. In one group of embodiments at least one Ra is pyrazoyl substituted with at least one methyl. In one group of embodiments, Ra is pyrazol-5-yl. In one group of embodiments, Ra is 4-methyl-pyrazol-5-yl. In one group of embodiments, Q is substituted with at least one Ra selected from the group consisting of —(CH2)kOH, —(CH2)kNH2, —(CH2)kNH(C1-8alkyl), —(CH2)kN(C1-8alkyl)(C1-8alkyl), —(CH2)kNHC(O)(C1-8alkyl), —(CH2)kN(C1-8alkyl)C(O)(C1-8alkyl), —(CH2)kNHC(O)2(C1-8alkyl), —(CH2)kN(C1-8alkyl)C(O)2(C1-8alkyl), —(CH2)kNHS(O)2(C1-8alkyl), —(CH2)kN(C1-8alkyl)S(O)2(C1-8alkyl), and —(CH2)kheterocycloalkyl optionally substituted with one to three Rc where k is selected from the group consisting of 0, 1, 2, 3, 4, 5, and 6. In some embodiments the heterocycloalkyl group is morpholino or piperazinyl optionally substituted with alkyl, —C(O)C1-8alkyl, —C(O)2C1-8alkyl, or —S(O)2C1-8alkyl. In one group of embodiments, Q is substituted with at least one Ra selected from the group consisting of —NRd(CH2)kOH, —NRd(CH2)kNH2, —NRd(CH2)kNH(C1-8alkyl), —NRd(CH2)kN(C1-8alkyl)(C1-8alkyl), —NRd(CH2)kNHC(O)(C1-8alkyl), —NRd(CH2)kN(C1-8alkyl)C(O)(C1-8alkyl), —NRd(CH2)kNHC(O)2(C1-8alkyl), —NRd(CH2)kN(C1-8alkyl)C(O)2(C1-8alkyl), —NRd(CH2)kNHS(O)2(C1-8alkyl), —NRd(CH2)kN(C1-8alkyl)S(O)2(C1-8alkyl), and —NRd(CH2)kheterocycloalkyl optionally substituted with one to three Rc where k is selected from the group consisting of 0, 1, 2, 3, 4, 5, and 6. In some embodiments, Rd is H or C1-8alkyl. In some embodiments the heterocycloalkyl group is morpholino or piperazinyl optionally substituted with alkyl, —C(O)C1-8alkyl, —C(O)2C1-8alkyl, or —S(O)2C1-8alkyl. In one group of embodiments, Q is substituted with at least one Ra selected from the group consisting of O(CH2)kOH, O(CH2)kNH2, O(CH2)kNH(C1-8alkyl), O(CH2)kN(C1-8alkyl)(C1-8alkyl), O(CH2)kNHC(O)(C1-8alkyl), O(CH2)kN(C1-8alkyl)C(O)(C1-8alkyl), O(CH2)kNHC(O)2(C1-8alkyl), O(CH2)kN(C1-8alkyl)C(O)2(C1-8alkyl), O(CH2)kNHS(O)2(C1-8alkyl), O(CH2)kN(C1-8alkyl)S(O)2(C1-8alkyl), and O(CH2)kheterocycloalkyl optionally substituted with one to three Rc where k is selected from the group consisting of 0, 1, 2, 3, 4, 5, and 6. In some embodiments the heterocycloalkyl group is morpholino or piperazinyl optionally substituted with alkyl, —C(O)C1-8alkyl, —C(O)2C1-8alkyl, or —S(O)2C1-8alkyl. In one group of embodiments, T1 is C and R2 is H. In one group of embodiments, T2 is C and R3 is H. In one group of embodiments, T4 is C and R5 is H. In one group of embodiments, T3 is C and R4 is C1-8 alkoxy. In one group of embodiments, R2, R3, R5 when present are H and R4 is C1-8 alkoxy. In one group of embodiments, R4 is methoxy. In one group of embodiments, R4 is haloalkoxy. In one group of embodiments, R4 is OCHF2. In one group of embodiments, R4 is OCF3. In one group of embodiments, R2, R3, R4, and R5 when present are H. In one group of embodiments, one of R2, R3, R4, and R5 is selected from the group consisting of −O(CH2)zOH, —O(CH2)zNH2, —O(CH2)zNH(C1-8alkyl), and —O(CH2)zN(C1-8alkyl)(C1-8alkyl) where z is selected from the group consisting of 0, 1, 2, 3, 4, 5, and 6. In one group of embodiments, X is O. In one group of embodiments, CH2. In one group of embodiments, X is C(R9)2 and at least one of R9 is F. In one group of embodiments, Y is CH2. In one group of embodiments, Y is CR1aR1b and at least one of R1a or R1b is F. In one group of embodiments, the compound is not: In another group of embodiments, the invention provides compounds of Formula (Ib): or a tautomer or pharmaceutically acceptable salt thereof, wherein: Q is selected from the group consisting of aryl, heteroaryl, and heterocycloalkyl, each optionally substituted with one to three Ra; Y is O or CH2; X is O or CH2; R2 and R3 are independently absent or selected from the group consisting of hydrogen, halo, Rb, ORd, O(CH2)zORd, O(CH2)zNRdRd, OC(O)Re, SRd, CN, NO2, CO2Rd, CONRdRd, C(O)Rd, OC(O)NRdRd, NRdRd, NRdC(O)Re, NRdC(O)2Re, NRdC(O)NRdRd, S(O)Re, S(O)2Re, NRdS(O)2Re, S(O)2NRdRd, and N3 where z is 0, 1, 2, or 3; R4 is absent or selected from the group consisting of hydrogen, Rb, ORd, O(CH2)zORd, where z is 0, 1, 2, or 3; R5 is absent or selected from the group consisting of hydrogen, halo, Rb, and ORd; R6 and R7 together form oxo or an aldehyde protecting group; T1, T2, T3, and T4 are independently C or N provided that at least one of T1, T2, T3, and T4 is N and at least one of T1, T2, T3, and T4 is C; each Ra is independently selected from the group consisting of halo, oxo, Rb, ORd, O(CH2)uORd, O(CH2)uNRdRd, O(CH2)uNRdC(O)Re, O(CH2)uNRdC(O)2Re, O(CH2)uNRdS(O)2Re, NH2, —(CH2)kOC(O)Re, —(CH2)kSRd, CN, NO2, —(CH2)kCO2(C1-8alkyl)OH, —(CH2)kCO2(C1-8alkyl)(heteroaryl)C(O)(C1-8alkyl), —(CH2)kCO2Rd, —(CH2)kCONRdRd, —(CH2)kNRdC(O)Re, —(CH2)kNRdC(O)2Re, —(CH2)kC(O)Rd, —(CH2)kOC(O)NRdRd, —NRd(CH2)uORd, —NRd(CH2)uNRdRd, —NRd(CH2)uNRdC(O)Re, —NRd(CH2)uNRdC(O)2Re, —NRd(CH2)uNRdS(O)2Re, —(CH2)kNRdC(O)Re, —(CH2)kNRdC(O)2Rd, —(CH2)kNRdC(O)NRdRd, —(CH2)kS(O)Re, —(CH2)kS(O)2Re, —(CH2)kNRdS(O)2Re, —C(O)(CH2)kNRdS(O)2Re, —(CH2)kC(O)NRdS(O)2Re, —(CH2)kS(O)2NRdRd, N3, —(CH2)karyl optionally substituted with one to three Rc, —NRd(CH2)karyl optionally substituted with one to three Rc, —(CH2)kheteroaryl optionally substituted with one to three Rc, —NRd(CH2)kheteroaryl optionally substituted with one to three Rc, —(CH2)kheterocycloalkyl optionally substituted with one to three Rc, and —NRd(CH2)kheterocycloalkyl optionally substituted with one to three Rc where k is 0, 1, 2, 3, 4, 5, or 6 and u is 1, 2, 3, 4, 5, or 6; each Rb is independently selected from the group consisting of C1-8alkyl, C2-8alkenyl, and C2-8alkynyl, each optionally independently substituted with one to three halo, ORd, or NRdRd; each Re is independently selected from the group consisting of halo, C1-8alkyl, haloC1-8alkyl, C2-8alkenyl, haloC2-8alkenyl, C2-8alkynyl, haloC2-8alkynyl, (CH2)mORf, OC(O)Rg, SRf, CN, NO2, (CH2)mCO2Rf, CONRfRf, C(O)Rf, OC(O)NRfRf, (CH2)mNRfRf, NRfC(O)Rg, NRfC(O)2Rg, NRfC(O)NRfRf, S(O)Rg, S(O)2Rg, NRfS(O)2Rg, S(O)2NRfRf, N3, (Rf)mSiC1-8alkyl, heteroaryl optionally substituted with one to three Rh, cycloalkyl optionally substituted with one to three Rh, and heterocycloalkyl optionally substituted with one to three Rh where m is selected from the group consisting of 0, 1, 2, 3, 4, 5, and 6; each Rh is independently selected from the group consisting of halo, C1-8alkyl, haloC1-8alkyl, ORj, OC(O)R, NO2, CO2Rj, CONRjRj, C(O)Rj, OC(O)NRjRj, NRjRj, NRjC(O)Rt, NRjC(O)2Rt, NRjC(O)NRjRj, S(O)Rt, S(O)2Rt, NRjS(O)2Rt, and S(O)2NRjRj; Rd, Rf, and Rj are each independently selected from the group consisting of hydrogen, C1-8 alkyl, haloC1-8alkyl, C2-8 alkenyl, haloC2-8alkenyl, C2-8 alkynyl, and haloC2-8alkynyl; and Re, Rg, and Rt are each independently selected from the group consisting of C1-8alkyl, haloC1-8alkyl, C2-8 alkenyl, haloC2-8alkenyl, C2-8 alkynyl, and haloC2-8alkynyl; provided that X and Y are not both O; provided that when Q is phenyl and R4 is C1-8alkyl or C2-8alkenyl, Q is substituted with at least one Ra; provided that when R5 is halo, Q is substituted with at least 1 Ra; provided that when R5 is Rb, Q is not phenyl; and provided that when R2, R3, R4, and R5 are H and Q is phenyl, Q is substituted with at least one Ra selected from 4-carboxy, 3-carboxy, and (C1-8 alkyl 3-carboxylate). In one group of embodiments, the invention provides compounds of Formula Ib wherein R2 and R3 are independently absent or selected from the group consisting of hydrogen, Rb, ORd, O(CH2)zORd, O(CH2)zNRdRd, OC(O)Re, CO2Rd, CONRdRd, and C(O)Rd, where z is 1, 2, or 3. In one group of embodiments, the invention provides compounds of Formula Ib wherein at least one z is 0. In another group of embodiments, at least one z is 1. In yet another group of embodiments, at least one z is 2. In still another group of embodiments, at least one z is 3. In another group of embodiments, no z is 0. In one group of embodiments, the invention provides compounds of Formula Ib wherein T2 is N; T1, T3, and T4 are C; R2 and R5 are H; R3 is absent; and R4 is C1-8alkoxy. In one group of embodiments, the invention provides compounds of Formula Ib wherein T2 is N; T1, T3, and T4 are C; R2 and R5 are H; R3 is absent; and R5 is selected from hydroxy and C1-8alkoxy. In one group of embodiments, the invention provides compounds of Formula Ib wherein T4 is N; T1, T2, and T3 are C; R2 and R3 are H; R5 is absent; and R4 is selected from C1-8alkyl and C1-8alkoxy. In one group of embodiments, the invention provides compounds of Formula Ib wherein T1 is N; T2, T3, and T4 are C; R3, R4, and R5 are H; and R2 is absent. In one group of embodiments, the invention provides compounds of Formula Ib wherein T2 is N; T1, T3, and T4 are C; R2, R4, and R5 are H; and R3 is absent. In one group of embodiments, the invention provides compounds of Formula Ib wherein T3 is N; T1, T2, and T4 are C; R2, R3, and R5 are H; and R4 is absent. In one group of embodiments, the invention provides compounds of Formula Ib wherein T4 is N; T1, T2, and T3 are C; R2, R3, and R4 are H; and R5 is absent. In one group of embodiments, the invention provides compounds of Formula Ib wherein Q is selected from an imidazopyridinyl group, a pyrrolopyridinyl group, a pyrazolopyridinyl group, a triazolopyridinyl group, a pyrazolopyrazinyl group, a pyridinyl group, a pyrazinyl group, an oxazolyl group, an imidazolyl group, a triazolyl group, a tetrazolyl group, a pyrazolyl group, a quinolinyl group, an isoquinolinyl group, an indazolyl group, a benzooxazolyl group, a naphthyridinyl group, and a quinoxalinyl group; and wherein Q is optionally substituted with one to three Ra. In another group of embodiments, the invention provides compounds of Formula Ic: or a tautomer or pharmaceutically acceptable salt thereof, wherein: Y is CH2; X is O or CH2; T1, T2, T3, and T4 are C or N, provided that no more than one of T1, T2, T3, and T4 is N; Q is selected from the group consisting of i) heteroaryl optionally substituted with one to three Ra; wherein R2, R3, R4, and R5, are independently absent or selected from the group consisting of hydrogen, halo, Rb, ORd, O(CH2)zORd, O(CH2)zNRdRd, OC(O)Re, SRd, CN, NO2, CO2Rd, CONRdRd, C(O)Rd, OC(O)NRdRd, NRdRd, NRdC(O)Re, NRdC(O)2Re, NRdC(O)NRdRd, S(O)Re, S(O)2Re, NRdS(O)2Re, S(O)2NRdRd, and N3 where z is 0, 1, 2, or 3; ii) aryl substituted with one to three —(CH2)kCO2Rd; wherein R2 and R5 are independently absent or selected from the group consisting of hydrogen, halo, ORd, O(CH2)zORd, O(CH2)zNRdRd, OC(O)Re, SRd, CN, NO2, CO2Rd, CONRdRd, C(O)Rd, OC(O)NRdRd, NRdRd, NRdC(O)Re, NRdC(O)2Re, NRdC(O)NRdRd, S(O)Re, S(O)2Re, NRdS(O)2Re, S(O)2NRdRd, and N3 where z is 0, 1, 2, or 3; R3 and R4 are independently absent or selected from the group consisting of hydrogen, halo, Rb, ORd, O(CH2)zORd, O(CH2)zNRdRd, OC(O)Re, SRd, CN, NO2, CO2Rd, CONRdRd, C(O)Rd, OC(O)NRdRd, NRdRd, NRdC(O)Re, NRdC(O)2Re, NRdC(O)NRdRd, S(O)Re, S(O)2Re, NRdS(O)2Re, S(O)2NRdRd, and N3 where z is 0, 1, 2, or 3; iii) unsubstituted aryl, wherein R2, R3, and R4, are independently absent or selected from the group consisting of hydrogen, halo, Rb, ORd, O(CH2)zORd, O(CH2)zNRdRd, OC(O)Re, SRd, CN, NO2, CO2Rd, CONRdRd, C(O)Rd, OC(O)NRdRd, NRdRd, NRdC(O)Re, NRdC(O)2Re, NRdC(O)NRdRd, S(O)Re, S(O)2Re, NRdS(O)2Re, S(O)2NRdRd, and N3 where z is 0, 1, 2, or 3; and R5 is absent or is ORd; and iv) heterocycloalkyl, optionally substituted with one to three Ra; wherein R2, R3, R4, and R5, are independently absent or selected from the group consisting of hydrogen, Rb, ORd, O(CH2)zORd, O(CH2)zNRdRd, OC(O)Re, SRd, CN, NO2, CO2Rd, CONRdRd, C(O)Rd, OC(O)NRdRd, NRdRd, NRdC(O)Re, NRdC(O)2Re, NRdC(O)NRdRd, S(O)Re, S(O)2Re, NRdS(O)2Re, S(O)2NRdRd, and N3 where z is 0, 1, 2, or 3; R6 and R7 together form oxo or an aldehyde protecting group; each Ra is independently selected from the group consisting of halo, oxo, Rb, ORd, O(CH2)uORd, O(CH2)uNRdRd, O(CH2)uNRdC(O)Re, O(CH2)uNRdC(O)2Re, O(CH2)uNRdS(O)2Re, NH2, —(CH2)kOC(O)Re, —(CH2)kSRd, CN, NO2, —(CH2)kCO2(C1-8alkyl)OH, —(CH2)kCO2(C1-8alkyl)(heteroaryl)C(O)(C1-8alkyl), —(CH2)kCO2Rd, —(CH2)kCONRdRd, —(CH2)kNRdC(O)Re, —(CH2)kNRdC(O)2Re, —(CH2)kC(O)Rd, —(CH2)kOC(O)NRdRd, —NRd(CH2)uORd, —NRd(CH2)uNRdRd, —NRd(CH2)uNRdC(O)Re, —NRd(CH2)uNRdC(O)2Re, —NRd(CH2)uNRdS(O)2Re, —(CH2)kNRdC(O)Re, —(CH2)kNRdC(O)2Rd, —(CH2)kNRdC(O)NRdRd, —(CH2)kS(O)Re, —(CH2)kS(O)2Re, —(CH2)kNRdS(O)2Re, —C(O)(CH2)kNRdS(O)2Re, —(CH2)kC(O)NRdS(O)2Re, —(CH2)kS(O)2NRdRd, N3, —(CH2)karyl optionally substituted with one to three Rc, —NRd(CH2)karyl optionally substituted with one to three
{'bibliographic_information': "{'country': 'US', 'doc-number': '13730730', 'kind': 'B2', 'date': '20121228', 'invention_title': 'Substituted heteroaryl aldehyde compounds and methods for their use in increasing tissue oxygenation'}", 'source_file': './grant/2015/ipg150421.xml', 'source_data': 'USPTO-Grant'}