The synthesis of compounds 1, 2, 10, 11, 16 and 21 has been previously described . Compounds 3-9, 12-15 and 17-20 were synthesized as shown in Scheme 1. Building block 21 was subjected to Sonogashira reaction with alkynes 24a-e, followed by the saturation of alkyne and the cleavage of benzoyl group to obtain products 4, 6, 7, 13 and 18. Suzuki-Miyaura reaction of 21 with the corresponding vinyl dioxaborolanes 25ac, or aryl or alkyl dioxaborolanes 26a-c with subsequent saturation of unsaturated bonds and the cleavage of benzoyl group gave products 5, 14, 19 and 3, 12, 20. The target compound 17 was synthesized from pinacol borane derivative 22 and benzylbromide 27 using Suzuki-Miyaura type reaction with subsequent hydrogenation of alkyne moiety and benzoyl group cleavage. Coupling of 21 with propargyl alcohol (28) followed by oxidation of alcohol to aldehyde and reduction of alkyne to alkene provided 23. Building block 23 was further converted into products 8, 9 and 15 using the Wittig reaction, the saturation of double bonds and the cleavage of benzoyl group (see Supporting Information for details).