3-(1-甲基乙氧基)-4-(三丁基锡烷基)-3-环丁烯-1,2-二酮 、
Trifluoro-methanesulfonic acid (8S,9S,10R,13R,14S,17R)-17-((R)-1,5-dimethyl-hexyl)-10,13-dimethyl-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl ester 在
三(2-呋喃基)膦 、 zinc(II) chloride 、 bis(dibenzylideneacetone)-palladium
(0) 作用下,
以
various solvent(s) 为溶剂,
反应 0.75h,
以95%的产率得到3-[(8S,9S,10R,13R,14S,17R)-17-((R)-1,5-Dimethyl-hexyl)-10,13-dimethyl-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl]-4-isopropoxy-cyclobut-3-ene-1,2-dione