(3aS,8aR,10aR,11R,13aR)-8a-hydroxy-3a,10a-dimethyl-11-((R)-6-methylheptan-2-yl)-1,3a,7,8,8a,9,10,10a,11,12,13,13a-dodecahydro-2H-indeno[5,4-d]oxepino[3,4-b]oxepine-2,4,6-trione 在
sodium hydroxide 作用下,
反应 1.0h,
以80 mg的产率得到19-nor-5-methyl-5-hydroxy-3,4,5,6-disecocholest-7(8),9(10)-dien-2,5,7-tricarboxylic acid