(2S,3aS,7aS)-1-{(R)-4-[6-Amino-2-(biphenyl-4-ylmethoxycarbonylamino)-hexanoylamino]-4-carboxy-butyryl}-octahydro-indole-2-carboxylic acid
(2S,3aS,7aS)-1-{(R)-4-[6-Amino-2-(2-bromo-benzyloxycarbonylamino)-hexanoylamino]-4-carboxy-butyryl}-octahydro-indole-2-carboxylic acid
(2S,3aS,7aS)-1-{(R)-4-[6-Amino-2-(2-chloro-benzyloxycarbonylamino)-hexanoylamino]-4-carboxy-butyryl}-octahydro-indole-2-carboxylic acid
(2S,3aS,7aS)-1-
(2S,3aS,7aS)-1-{(R)-4-[6-Amino-2-(2-methyl-benzyloxycarbonylamino)-hexanoylamino]-4-carboxy-butyryl}-octahydro-indole-2-carboxylic acid