(1R,2R,4aS,4bS,7S,8aS,10aR)-7-Methoxymethoxy-1-((R)-1-methoxymethoxy-5-methyl-hex-2-ynyl)-2,4b-dimethyl-2-vinyl-tetradecahydro-phenanthrene 在
dicobalt octacarbonyl 作用下,
以
二氯甲烷 为溶剂,
反应 20.0h,
以10%的产率得到(2S,4aS,4bS,6aR,6bR,10R,10aR,10bR,12aS)-9-Isobutyl-2,10-bis-methoxymethoxy-4a,6a-dimethyl-2,3,4,4a,4b,5,6,6a,6b,7,10,10a,10b,11,12,12a-hexadecahydro-1H-pentaleno[2,1-a]phenanthren-8-one