5-androstene-3β,17β-diol 3-acetate 17-p-toluene-δ-sulfonate 在
sodium azide 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以78%的产率得到Acetic acid (3S,8R,9S,10R,13S,14S,17R)-17-azido-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester