diethyl methylpropargylmalonate 、
一氧化碳 、
(5S,8R,9S,10S,13R,14S,17R)-10,13-dimethyl-17-(6-methylheptan-2-yl)-4,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl trifluoromethanesulfonate 在
palladium diacetate 、
1,3-双(二苯基膦)丙烷 三乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 3.0h,
以77%的产率得到2-{4-[(5S,8R,9S,10S,13R,14S,17R)-17-((R)-1,5-Dimethyl-hexyl)-10,13-dimethyl-4,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl]-4-oxo-but-2-ynyl}-2-methyl-malonic acid diethyl ester