重氮甲烷 、 (1S,3S,4S,5R,8S,9S,10S,13R,14S,17R)-17-((1R,4S)-1-Carboxy-4-hydroxy-5-methyl-hex-5-enyl)-1,3-dihydroxy-4,13,14-trimethyl-tetradecahydro-cyclopropa[9,10]cyclopenta[a]phenanthrene-4-carboxylic acid methyl ester 以
甲醇 、
乙醚 为溶剂,
生成
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