(1R,3aS,3bS,10aR,10bS,11S,12aS)-7-(3-carboxyphenyl)-11-hydroxy-10a,12a-dimethyl-1-(propanoyloxy)-1,2,3,3a,3b,4,5,7,10,10a,10b,11,12,12a-tetradecahydrocyclopenta[5,6]naphtho[1,2-f]indazole-1-carboxylic acid 、
1,1-二氧化四氢噻吩-3-胺 在
N,N'-羰基二咪唑 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 5.0h,
以26%的产率得到(1R,3aS,3bS,10aR,10bS,11S,12aS)-7-{3-[(1,1-dioxidotetrahydrothiophen-3-yl)carbamoyl]phenyl}-11-hydroxy-10a,12a-dimethyl-1-(propanoyloxy)-1,2,3,3a,3b,4,5,7,10,10a,10b,11,12,12a-tetradecahydrocyclopenta[5,6]naphtho[1,2-f]indazole-1-carboxylic acid