1-(Cyclobutylcarbonyl)-4-({4-[(3-methyl-1,2,4-oxadiazol-5-yl)methyl]-1-piperidinyl}carbonyl)piperidine

1-[(3-Cyanophenyl)carbamoyl]ethyl 6-chloropyridine-3-carboxylate

2-Oxo-2-(phenylformamido)ethyl 6-chloropyridine-3-carboxylate

1-{[2-Chloro-5-(piperidine-1-sulfonyl)phenyl]carbamoyl}ethyl 6-chloropyridine-3-carboxylate

1-(4-Tert-butylphenyl)-1-oxopropan-2-yl 6-chloropyridine-3-carboxylate

1-[(4-Tert-butylphenyl)carbamoyl]ethyl 6-chloropyridine-3-carboxylate

{[6-Amino-1-(2-methylpropyl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl](2-methoxyethyl)carbamoyl}methyl 6-chloropyridine-3-carboxylate

({8-Methyl-2,4-dioxo-1,3-diazaspiro[4.5]decan-3-yl}carbamoyl)methyl 6-chloropyridine-3-carboxylate

1-{1-[4-(difluoromethoxy)phenyl]-2,5-dimethyl-1H-pyrrol-3-yl}-1-oxopropan-2-yl 6-chloropyridine-3-carboxylate

1-(Adamantan-1-YL)-1-oxopropan-2-YL 6-chloropyridine-3-carboxylate

[(2lambda4,1,3-Benzothiadiazol-4-yl)carbamoyl]methyl 6-chloropyridine-3-carboxylate