二碳酸二叔丁酯 、
(2S,3aR,8bR)-7-[(2S,3aR,8bR)-2-carboxy-6-chloro-8b-hydroxy-2,3,3a,4-tetrahydro-1H-pyrrolo[2,3-b]indol-7-yl]-6-chloro-8b-hydroxy-2,3,3a,4-tetrahydro-1H-pyrrolo[2,3-b]indole-2-carboxylic acid 在
三乙胺 作用下,
以
甲醇 为溶剂,
反应 12.0h,
生成 (2S,2'S,3aR,3'aR,8aR,8'aR)-1,1'8,8'-tetrakis(tert-butoxycarbonyl)-6,6'-dichloro-3a,3'a-dihydroxy-1,1'2,2',3,3a,3',3'a,8,8a,8'a-dodecahydro-5,5'-bipyrrolo[2,3-b]indole-2,2'-dicarboxylic acid