benzyl 4-benzyloxy-1,2,3,6-tetrahydro-5-methoxypyrrolo[3,2-e]indole-7-carboxylate

benzyl 4-benzyloxy-3,6-dihydro-5-methoxypyrrolo[3,2-e]indole-7-carboxylate

5,8-dibromo-2-(o-nitrobenzenesulfonyl)-1,2,3,4-tetrahydro-6,7-dimethoxy-1-methoxyisoquinoline

methyl 3,6-dihydro-4,5-dimethoxy-benzo[1,2-b:4,3-b']dipyrrole-2-carboxylate

methyl 4,5-dimethoxy-3,6,7,8-tetrahydropyrrolo[3,2-e]indole-2-carboxylate