Calciferol6-benzo[c]thiophen-5-ol(S)-3-[(1R,3aS,7aR)-7a-Methyl-1-((E)-(1R,4R)-1,4,5-trimethyl-hex-2-enyl)-°Ctahydro-inden-(4E)-ylidenemethyl]-2,2-dioxo-2,3,4,5,6,7-hexahydro-1H-2λ6-benzo[c]thiophen-5-oltert-butyldimethylsilyl chloride-9,10-secoergosta-5,7(E),10(19),22(E)-tetraeneSO2-adduct of 3(S)-(tert-butyldimethylsilyl)oxy-9,10-secoergosta-5,7(E),10(19),22(E)-tetraene(S)-5-[2-[(1R,3aS,7aR)-7a-Methyl-1-((E)-(1R,4R)-1,4,5-trimethyl-hex-2-enyl)-°Ctahydro-inden-(4E)-ylidene]-eth-(E)-ylidene]-4-pentyl-cyclohex-3-enoltert-Butyl-dimethyl-{(S)-5-[2-[(1R,3aS,7aR)-7a-methyl-1-((E)-(1R,4R)-1,4,5-trimethyl-hex-2-enyl)-°Ctahydro-inden-(4E)-ylidene]-eth-(E)-ylidene]-4-pentyl-cyclohex-3-enyloxy}-silane2 adducts of 1(S),3(R)-bis(tert-butyldimethylsilyloxy)-9,10-secoergosta-5(E),7(E),10(19),22(E)-tetraene(6S)- and (6R)-SO2 adducts of 1(S),3(R)-bis(tert-butyldimethylsilyloxy)-9,10-secoergosta-5(E),7(E),10(19),22(E)-tetraene2 adduct of 1(S),3(R)-bis(tert-butyldimethylsilyloxy)-20(S)-formyl-9,10-secopregna-5,7(E),10(19)-triene(6R)-SO2 adduct of 1(S),3(R)-bis(tert-butyldimethylsilyloxy)-20(S)-formyl-9,10-secopregna-5,7(E),10(19)-triene
参考标题:Synthesis Of 24(28)-Methylene-1α-Hydroxyvitamin D3, A Novel Vitamin D3 Analogue 作者:Wei Guo,Zhijie Fang,Hongliang Li,Yanan Liu |发布日期:2014.4 摘要:24(28)-Methylene-1α-Hydroxyvitamin D3 Was Synthesised In 13 Steps From Vitamin D2. The Key Step Of The Synthesis Involved The Wittig-Horner Olefination Of A Nor-Vitamin D2 Aldehyde With Diethylphosphono-3-Methyl-2-Butanone. The Resulting Enone Was Followed By Reduced Methylenation, Photoisomerisation And Deprotection Then Gave The Target Compound.