General Experimental Procedures. NMR spectra were recorded with deuterated DMSO with the residual solvent peak as an internal standard (δC 39.5, δH 2.50) on Bruker Avance III 600 MHz instrument equipped with a triple resonance inverse (CP-TCI) Prodigy N2 cooled CryoProbe (600 and 150 MHz for 1 H and 13 C NMR, respectively) and a JEOL 400 Mhz NMR spectrometer. GCMS was carried out in the electron impact (EI) mode using a Shimadzu QP-2020. LR-LCMS data was obtained using an Agilent 1200 series HPLC system equipped with a photo-diode array detector and a Thermo LTQ mass spectrometer. HRESIMS was carried out using a Shimadzu LC-q-TOF Mass Spectrometer equipped with a HPLC system. HPLC purifications were carried out using Agilent 1200 series or 1260 Infinity II HPLC systems (Agilent Technologies) equipped with a photodiode array detector. All solvents were of HPLC quality.