Petasiphenone

rac-4-{[(1R,3S)-3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2,2-difluorocyclopropyl]formamido}hexanoic acid

4-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropaneamido}-3-fluorobenzoic acid

2-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclopropaneamido}-5-fluorobenzoic acid

2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-3-yl]formamido}-5-methylhex-4-enoic acid

3-{3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazol-5-yl]propanoyl}-1,3-thiazolidine-4-carboxylic acid

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

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

5-[(2S)-3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]hexanoic acid

3-Tert-butyl-7-azaspiro[5.6]dodecan-8-one

rac-2-{2-[(1R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]-N-(propan-2-yl)acetamido}acetic acid