Acetic acid (1R,3aS,3bS,6aS,8S,9R,10aR,10bS,12aS)-8-acetoxy-1-((1S,2R,3R,4R)-2,3-diacetoxy-4-ethyl-1,5-dimethyl-hexyl)-10a,12a-dimethyl-6-oxo-hexadecahydro-5-oxa-benzo[3,4]cyclohepta[1,2-e]inden-9-yl ester 在
氢氧化钾 作用下,
以
甲醇 为溶剂,
反应 1.0h,
以91%的产率得到(22R,23R,24S)-28-homobrassinolide