N-[2-(4-[N-(cyclohexylcarbamoyl)-sulfamoyl]-phenyl)-ethyl]-5-hydroxy-2-methoxybenzamide 、
3beta-羟基孕甾-5-烯-20-酮 3-(琥珀酸氢酯) 在
对甲苯磺酸 、
N,N'-二环己基碳二亚胺 作用下,
以
乙醇 为溶剂,
反应 24.0h,
以70%的产率得到succinic acid [(17-acetyl-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta-[a]-phenanthren-3-yl) (4-methoxy-3-[2-[4-(N-cyclohexyl-carbamoyl)sulfamoyl-phenyl]ethylcarbamoyl]phenyl)]ester