重氮甲烷 、
((8R,9S,13S,14S)-3-Methoxy-13-methyl-17-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-2-ylsulfanyl)-acetic acid 以
乙醚 为溶剂,
生成 ((8R,9S,13S,14S)-3-Methoxy-13-methyl-17-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-2-ylsulfanyl)-acetic acid methyl ester