16α-(tert-butyldimethylsiloxy)-3β-(tert-butyldiphenylsiloxy)-5-androsten-17-one 在
氯化二乙基铝 、
lithium diisopropyl amide 作用下,
以
四氢呋喃 、
六甲基磷酰三胺 为溶剂,
反应 0.5h,
生成 2-[16-(
tert-butyl-dimethyl-silanyloxy)-3-(
tert-butyl-diphenyl-silanyloxy)-17-hydroxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1
H-cyclopenta[
a]phenanthren-17-yl]-
N-methoxy-
N-methyl-propionamide