10-Chloro-1,2,3,6,7,11b-hexahydro-2-[(3-methylphenyl)sulfonyl]-4H-pyrazino[2,1-a]isoquinolin-4-one

1'-[(tert-butoxy)carbonyl]-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-fluoro-3,4-dihydrospiro[1-benzopyran-2,3'-pyrrolidine]-7-carboxylic acid

4-{[(Benzyloxy)carbonyl]amino}-1'-[(tert-butoxy)carbonyl]-5-fluoro-3,4-dihydrospiro[1-benzopyran-2,3'-pyrrolidine]-7-carboxylic acid

4-{[(Benzyloxy)carbonyl]amino}-1'-[(tert-butoxy)carbonyl]-5-methyl-3,4-dihydrospiro[1-benzopyran-2,3'-pyrrolidine]-7-carboxylic acid

4-{[(Tert-butoxy)carbonyl]amino}-3,4-dihydrospiro[1-benzopyran-2,3'-pyrrolidine]-6-carboxylic acid

4-{[(Tert-butoxy)carbonyl]amino}-5-fluoro-3,4-dihydrospiro[1-benzopyran-2,3'-pyrrolidine]-7-carboxylic acid

Tert-butyl 7-fluoro-3,4-dihydrospiro[1,4-benzoxazine-2,1'-cyclopropane]-4-carboxylate

tert-Butyl (3-bromocyclobutyl)(methyl)carbamate

4-{5-Bromo-6-ethyl-7-methyl-[1,2,4]triazolo[1,5-a]pyridin-2-yl}piperidine

2-{5-Bromo-6-ethyl-7-methyl-[1,2,4]triazolo[1,5-a]pyridin-2-yl}pyrazine

5-Bromo-2-cyclobutyl-6-ethyl-7-methyl-[1,2,4]triazolo[1,5-a]pyridine