Acetic acid (2R,3S,5R,8R,9S,10S,13R,14S,17R)-3-acetoxy-17-((1S,2R,3R,4R)-2,3-diacetoxy-1,4,5-trimethyl-hexyl)-10,13-dimethyl-7-oxo-hexadecahydro-cyclopenta[a]phenanthren-2-yl ester 在
三氟过氧乙酸 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以98 mg的产率得到Acetic acid (1R,2R,3R)-2-acetoxy-1-[(S)-1-((1R,3aR,3bR,6aR,8S,9R,10aS,10bR,12aR)-8,9-diacetoxy-10a,12a-dimethyl-5-oxo-hexadecahydro-4-oxa-benzo[3,4]cyclohepta[1,2-e]inden-1-yl)-ethyl]-3,4-dimethyl-pentyl ester