ethyl (5β,8α,9β,10α,13α)-8-ethenyl-13-methyl-13-({[(4-methylphenyl)sulfonyl]oxy}methyl)podocarpan-15-oate 在
sodium azide 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 3.0h,
以80%的产率得到ethyl (1R,4aS,4bS,7S,8aR,10aS)-7-(azidomethyl)-1,4a,7-trimethyl-8a-vinyltetradecahydrophenanthrene-1-carboxylate