N-Fmoc-3-(2R,1'R,2'R)-(trans-2'-nitrocyclopropyl)alanine

(2S,3S)-2-{(2S,3R)-2-[(R)-2-Amino-3-((1R,2R)-2-nitro-cyclopropyl)-propionylamino]-3-phenyl-butyrylamino}-3-methyl-pentanoic acid methoxymethyl ester

(2S,4R)-((Z)-4-Propenyl)-pyrrolidine-1,2-dicarboxylic acid 2-[(1R,2R)-2-allyloxycarbonyl-1-methyl-2-(4-methyl-benzyloxycarbonylamino)-ethyl] ester 1-tert-butyl ester

(2S,3S)-2-{(2S,3R)-2-[(R)-2-(9H-Fluoren-9-ylmethoxycarbonylamino)-3-((1R,2R)-2-nitro-cyclopropyl)-propionylamino]-3-phenyl-butyrylamino}-3-methyl-pentanoic acid methoxymethyl ester

(2S,3R)-N-(9-fluorenylmethoxycarbonyl)-β-methylphenylalanine