1,8-di-tert-butyl 2-methyl (2S,3aS,8aS)-3a-(3-((S)-3-methoxy-2-((methoxycarbonyl)amino)-3-oxopropyl)-1H-indol-1-yl)-2,3,3a,8a-tetrahydropyrrolo[2,3-b]indole-1,2,8-tricarboxylate

exo-allyloxyisoleucinyl 3a-bromo-1,8-(di-tert-butoxycarbonyl)-1,2,3,3a,8,8a-hexahydropyrrolo[2,3-b]indole-2-carboxylate

1,8-di-tert-butyl 2-methyl (2S,3aS,8aS)-3a-(3-((S)-2-(1,3-dioxoisoindolin-2-yl)-3-methoxy-3-oxopropyl)-1H-indol-1-yl)-2,3,3a,8a-tetrahydropyrrolo[2,3-b]indole-1,2,8-tricarboxylate

di-tert-butyl (2S,3aS,8aS)-2-(((2S,3S)-1-(allyloxy)-3-methyl-1-oxopentan-2-yl)carbamoyl)-3a-(3-((S)-2-(1,3-dioxoisoindolin-2-yl)-3-methoxy-3-oxopropyl)-1H-indol-1-yl)-2,3,3a,8a-tetrahydropyrrolo[2,3-b]indole-1,8-dicarboxylate

1,8-di-tert-butyl 2-methyl (2S,3aR,8aR)-3a-(furan-2-yl)-2,3,3a,8a-tetrahydropyrrolo[2,3-b]indole-1,2,8-tricarboxylate