Synthesis and biological activity of 2-methyl-20-epi analogues of 1α,25-dihydroxyvitamin D3
作者:Toshie Fujishima、Zhaopeng Liu、Daishiro Miura、Manabu Chokki、Seiichi Ishizuka、Katsuhiro Konno、Hiroaki Takayama
DOI:10.1016/s0960-894x(98)00363-1
日期:1998.8
Synthesis and biological evaluation of all eight possible A-ring diastereomers of 2-methyl-20-epi-1,25-dihydroxyvitamin D-3 are described. Among the analogues synthesized, 2 alpha-methyl-20-epi-1 alpha,25-dihydroxyvitamin D-3 exhibited exceptionally high potency. The double modification of 2-methyl substitution and 20-epimerization yielded analogues with unique activity profiles. (C) 1998 Elsevier Science Ltd. All rights reserved.