L-Alanine, N-(phenylacetyl)-, 4-methoxyphenyl ester

rac-2-({1-[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentanecarbonyl]azetidin-3-yl}oxy)acetic acid

2-({1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)butanoyl]azetidin-3-yl}oxy)acetic acid

2-({1-[2-cyclobutyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoyl]azetidin-3-yl}oxy)acetic acid

2-({1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopent-1-ene-1-carbonyl]azetidin-3-yl}oxy)acetic acid

2-[(1-{5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazole-3-carbonyl}azetidin-3-yl)oxy]acetic acid

2-({1-[3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoyl]azetidin-3-yl}oxy)acetic acid

2-({1-[(2R,3S)-3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]azetidin-3-yl}oxy)acetic acid

2-({1-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methoxypropanoyl]azetidin-3-yl}oxy)acetic acid

rac-2-{2-[(1R,2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]-N-methylacetamido}acetic acid

(2S)-2-{2-[(1RS,2RS)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]acetamido}pentanoic acid