A novel and practical route to A-ring enyne synthon for 1α,25-dihydroxyvitamin D3 analogs: Synthesis of A-ring diastereomers of 1α,25-dihydroxyvitamin D3 and 2-methyl-1,25-dihydroxyvitamin D3
作者:Katsuhiro Konno、Shojiro Maki、Toshie Fujishima、Zhaopeng Liu、Daishiro Miura、Manabu Chokki、Hiroaki Takayama
DOI:10.1016/s0960-894x(97)10204-9
日期:1998.1
A novel and practical route to the A-ring enyne synthon (2), which can be versatile for a variety of A-ring analogs of 1 alpha,25-dihydroxyvitamin D3 (1), was developed. This novel method led to an improved synthesis of the A-ring diastereomers of 1, the compounds 13-15, and synthesis of the new analogs, 2-methyl-1,25-dihydroxyvitamin D3 (4) with its all possible diastereomers. The biological evaluation
开发了一种新颖而实用的通往A环烯炔合子(2)的途径,该途径可用于多种1α,25-二羟基维生素D3(1)的A环类似物。这种新方法改进了1的A环非对映异构体,化合物13-15的合成,以及新的类似物2-甲基-1,25-二羟基维生素D3(4)及其所有可能的非对映异构体的合成。对2-甲基类似物的生物学评估表明,α-α-β-异构体的效力比1。