propargyl lithocholate 、
prop-2-ynyl 4-{3-[2-(tert-butoxycarbonylamino)-3-(tritylthio)propanoyloxy]-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl}pentanoate 在
copper(l) iodide 、
四甲基乙二胺 、
氧气 作用下,
以
二氯甲烷 为溶剂,
以65%的产率得到6-[4-(3-hydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanoyloxy]hexa-2,4-diynyl 4-{3-[2-(tert-butoxycarbonylamino)-3-(tritylthio)propanoyloxy]-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl}pentanoate