重氮甲烷 、
[1-((3S,7R,8R,9S,10S,13S,14S)-3,7-Dihydroxy-13-methyl-17-oxo-1,2,3,4,7,8,9,11,12,13,14,15,16,17-tetradecahydro-cyclopenta[a]phenanthren-10-yl)-meth-(E)-ylideneaminooxy]-acetic acid 以
甲醇 、
乙醚 为溶剂,
反应 0.08h,
以91%的产率得到[1-((3S,7R,8R,9S,10S,13S,14S)-3,7-Dihydroxy-13-methyl-17-oxo-1,2,3,4,7,8,9,11,12,13,14,15,16,17-tetradecahydro-cyclopenta[a]phenanthren-10-yl)-meth-(E)-ylideneaminooxy]-acetic acid methyl ester