4049-28-9 ethyl (8S,8aR)-6-amino-8-[(carbamoyloxy)methyl]-8a-methoxy-5-methyl-4,7-dioxo-1a,4,7,8,8a,8b-hexahydroazireno[2',3':3,4]pyrrolo[1,2-a]indole-1(2H)-carboxylate 21448-82-8 [8a-hydroxy-1,5-dimethyl-6-(methylamino)-4,7-dioxo-1,1a,2,4,7,8,8a,8b-octahydroazireno[2',3':3,4]pyrrolo[1,2-a]indol-8-yl]methyl carbamate 90027-33-1 (6-amino-1-benzoyl-8a-methoxy-5-methyl-4,7-dioxo-1,1a,2,4,7,8,8a,8b-octahydroazireno[2',3':3,4]pyrrolo[1,2-a]indol-8-yl)methyl carbamate 5091-32-7 {(1aS,8S,8aR,8bR)-6-amino-8a-methoxy-5-methyl-1-[(4-methylphenyl)sulfonyl]-4,7-dioxo-1,1a,2,4,7,8,8a,8b-octahydroazireno[2',3':3,4]pyrrolo[1,2-a]indol-8-yl}methyl carbamate