C-25 epimeric 26-haloponasterone A: Synthesis, absolute configuration and moulting activity
作者:B YINGYONGNARONGKUL、S KUMPUN、N CHIMNOI
DOI:10.1016/j.steroids.2005.01.008
日期:2005.8
A convenient synthesis of inokosterone has been accomplished. Inokosterone exists as two C-25 epimers, which could be separated from each other through their diacetonide derivatives. The absolute configuration of these compounds was determined. Two C-25 epimers of 26-chloroponasterone A were synthesized from the respective C-25 epimeric inokosterone. Two epimeric 26-bromo and 26-iodoponasterone A compounds