Acetic acid (1S,3aS,3bR,6aS,7S,9S,10aR,10bS,12aS)-9-acetoxy-1-tert-butoxy-10a,12a-dimethyl-6-oxo-hexadecahydro-8-oxa-benzo[3,4]cyclohepta[1,2-e]inden-7-yl ester 在
potassium carbonate 作用下,
以
甲醇 为溶剂,
反应 13.0h,
以95.3%的产率得到(1S,2S,5S,6S,9S,10R,12R)-16-hydroxy-1,5-dimethyl-6-[(2-methylpropan-2-yl)oxy]tetracyclo[10.2.2.02,10.05,9]hexadecan-13-one