Amino Acid Derivatives

O5-tert-butyl O6-ethyl 3-bromo-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazine-5,6-dicarboxylate

O7-tert-butyl O6-ethyl 3-bromo-6,8-dihydro-5H-imidazo[1,2-a]pyrazine-6,7-dicarboxylate

O5-tert-butyl O6-ethyl 2-bromo-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazine-5,6-dicarboxylate

O5-tert-butyl O4-ethyl 3-bromo-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazine-4,5-dicarboxylate

O1-tert-butyl O2-methyl trans-5-[4-(trifluoromethyl)phenyl]pyrrolidine-1,2-dicarboxylate

O1-tert-butyl O2-methyl cis-5-[4-(trifluoromethyl)phenyl]pyrrolidine-1,2-dicarboxylate

O1-tert-butyl O2-methyl (2S,4S)-4-(3,4-difluoro-5-hydroxy-phenoxy)pyrrolidine-1,2-dicarboxylate

(2S)-2-(tert-butoxycarbonylamino)-3-(1-tert-butoxycarbonyl-3-piperidyl)propanoic acid

tert-butyl N-[(3S)-8-bromo-5-methyl-4-oxo-2,3-dihydro-1,5-benzoxazepin-3-yl]carbamate

2-[4-(1-tert-butoxycarbonylazepane-2-carbonyl)morpholin-3-yl]acetic acid

ethyl (2S,3S)-3-[[[(2S)-1-acetylpyrrolidine-2-carbonyl]amino]-(2-amino-2-oxo-ethyl)carbamoyl]oxirane-2-carboxylate

O2-tert-butyl O1-methyl 5-bromo-3,4-dihydro-1H-isoquinoline-1,2-dicarboxylate

O2-tert-butyl O3-methyl (3R)-5-bromo-3,4-dihydro-1H-isoquinoline-2,3-dicarboxylate

tert-butyl 4-[1-(5-chloro-2-pyridyl)-2-methoxy-2-oxo-ethyl]piperazine-1-carboxylate

tert-butyl 4-[1-(4-chloro-2-pyridyl)-2-methoxy-2-oxo-ethyl]piperazine-1-carboxylate

tert-butyl N-[(1S)-1-methyl-2-oxo-2-(1-phenyl-3,4-dihydro-1H-pyrrolo[1,2-a]pyrazin-2-yl)ethyl]carbamate