7-bromo-2-(3-morpholin-4-ylpropyl)-1-phenyl-4a,5,6,7,8,8a-hexahydro-1H-chromeno[2,3-c]pyrrole-3,9-dione

(2R)-2-{[(1RS,5SR)-5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohex-3-en-1-yl]formamido}-3-hydroxypropanoic acid

2-[({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,3-oxazol-4-yl}formamido)oxy]acetic acid

(2S)-2-({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,3-oxazol-4-yl}formamido)-3-methylpentanoic acid

1-{5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,3-oxazole-4-carbonyl}-3,3-dimethylazetidine-2-carboxylic acid

5-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hex-5-enamido]methyl}-1,3-oxazole-4-carboxylic acid

5-{[2-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetamido]methyl}-1,3-oxazole-4-carboxylic acid

5-({2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopropyl]acetamido}methyl)-1-methyl-1H-pyrazole-4-carboxylic acid

5-({3-[benzyl(methyl)amino]-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido}methyl)-1,3-oxazole-4-carboxylic acid

9-(Cyclopentylmethyl)-2,2-dimethyl-5-oxa-8-azaspiro[3.5]nonane

9-(4,4-Difluorobutyl)-2,2-dimethyl-5-oxa-8-azaspiro[3.5]nonane