N-methyl-(R)-tryptophan methyl ester
(R)-methyl-2-((S)-2-((tert-butoxycarbonyl)amino)-N-methylpropanamido)-3-(1H-indol-3-yl) propanoate
(2,R,5S)-5-(tert-butoxycarbonylamino)-3-methyl-2-<(2-bromo-1H-indol-3-yl)methyl>-4-oxo-3-azahexanoic acid
methyl (2R,5S)-5-(tert-butoxycarbonylamino)-3-methyl-2-<(2-bromo-1H-indol-3-yl)methyl>-4-oxo-3-azahexanoate
(R)-β-amino-β-(4-methoxyphenyl)propionic acid