506-68-3
溴化氰
+
67395-21-5
5,7,7a,8,9,10-hexahydro-7-methoxycarbonyl-6H-benzopyrrolo<1,2-a>indole-7-acetic acid methyl ester
→
~89%
83927-37-1
6a-bromo-7-carboxy-11a-cyano-5,6a,7,7a,8,9,10,11a-octahydro-6H-benzopyrrolo<1,2-a>indole-7-acetic acid dimethyl ester