3α,7β,29-trihydroxystigmata-5,24(28)diene 29-acetate 在
2,3-二氯-5,6-二氰基-1,4-苯醌 作用下,
以
苯 为溶剂,
反应 24.0h,
以63 mg的产率得到Acetic acid (E)-(S)-6-((3S,8S,9S,10R,13R,14S,17R)-3-hydroxy-10,13-dimethyl-7-oxo-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)-3-isopropyl-hept-2-enyl ester