methyl (1R,3S,1'R)-1-[1'-(9-fluorenylmethoxycarbonyl)amino-2'-phenylethyl]-1,2,3,4-tetrahydro-β-carboline-3-carboxylate

methyl (1S,3S,1'R)-1-[1'-(9-fluorenylmethoxycarbonyl)amino-2'-phenylethyl]-1,2,3,4-tetrahydro-β-carboline-3-carboxylate

5-(9-fluorenylmethyl) 2-methyl (2S,3aS,4R,5aR,10bS)-4-benzyl-1,2,3,3a,4,5,5a,6-octahydropyrrolo[3',2':3,4]pyrrolo[2,3-b]indole-2,5-dicarboxylate