异丁基锰(II)碘化物 、
Formic acid (3R,5R,10S,13R,17R)-17-((R)-3-chlorocarbonyl-1-methyl-propyl)-10,13-dimethyl-12-oxo-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester 以
乙醚 、
二氯甲烷 为溶剂,
以52%的产率得到Formic acid (3R,5R,10S,13R,17R)-17-((R)-1,6-dimethyl-4-oxo-heptyl)-10,13-dimethyl-12-oxo-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester