(S)-2-tert-Butoxycarbonylamino-3-(1-methoxy-1H-indol-3-yl)-propionic acid

N-<(2S,4R)-2--4-methylheptanoyl>-N-methyl-L-alanine methyl ester

N--N1'-methoxy-N-methyl-L-tryptophan

(S)-3-(2,3-Dihydro-1H-indol-3-yl)-2-[(9H-fluoren-9-ylmethoxycarbonyl)-methyl-amino]-propionic acid methyl ester

(S)-2-[(9H-Fluoren-9-ylmethoxycarbonyl)-methyl-amino]-3-(1-methoxy-1H-indol-3-yl)-propionic acid methyl ester