1-((1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-3a-amino-5a,5b,8,8,11a-pentamethyl-1-(1-methylcyclopropyl)icosahydro-1H-cyclopenta[a]chrysen-9-yl) 3-benzyl (1S,3R)-2,2-dimethylcyclobutane-1,3-dicarboxylate 、
(R)-4-(1-hydroxy-3-methylbutan-2-yl)thiomorpholine 1,1-dioxide 在
三氟甲磺酸酐 、
2,6-二甲基吡啶 、
三乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 5.34h,
生成 (1R,3S)-3-((((1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-3a-(((S)-2-(1,1-dioxidothiomorpholino)propyl)amino)-5a,5b,8,8,11a-pentamethyl-1-(1-methylcyclopropyl)icosahydro-1H-cyclopenta[a]chrysen-9-yl)oxy)carbonyl)-2,2-dimethylcyclobutane-1-carboxylic acid