4-(4-methoxybenzylideneamino)-5-methyl-2H-1,2,4-triazole-3(4H)-thione 、 (1R,3aS,5aR,5bR,9S,11aR)-9-(2-chloroacetyl)oxy-5a,5b,8,8,11a-pentamethyl-1-prop-1-en-2-yl-1,2,3,4,5,6,7,7a,9,10,11,11b,12,13,13a,13b-hexadecahydrocyclopenta[a]chrysene-3a-carboxylic acid 在
potassium carbonate 作用下,
以
乙腈 为溶剂,
以86 %的产率得到