C3′-nprenyl-L-Trp-pyrroloindoline methyl ester

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

(2S,3aR,8aS)-1,8-bis(tert-butoxycarbonyl)-3a-methyl-1,2,3,3a,8,8a-hexahydropyrrolo[2,3-b]indole-2-carboxylic acid

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