7-bromo-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]quinoline-4-carboxamide

7-chloro-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]quinoline-4-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-6-methoxyquinoline-4-carboxamide

5-chloro-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]quinoline-4-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]quinoline-4-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-6-fluoroquinoline-4-carboxamide

5-bromo-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]quinoline-4-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-6-(trifluoromethoxy)quinoline-4-carboxamide

6-chloro-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]quinoline-4-carboxamide

(R)-1-((S)-2-amino-3-methylbutanoyl)pyrrolidin-2-ylboronic acid

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]isoquinoline-5-carboxamide

N-[2-[(2S)-2-cyano-4,4-difluoropyrrolidin-1-yl]-2-oxoethyl]naphthalene-1-carboxamide

N-[2-[(2S,4S)-2-cyano-4-fluoropyrrolidin-1-yl]-2-oxoethyl]naphthalene-1-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]isoquinoline-8-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-3-hydroxyquinoline-4-carboxamide

8-chloro-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]quinoline-4-carboxamide

(R)-8-(3-aminopiperidin-1-yl)-7-(but-2-ynyl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-1H-purine-2,6(3H,7H)-dione

8-bromo-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]quinoline-4-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]quinoline-5-carboxamide

(S)-N-(2-(2-cyanopyrrolidin-1-yl)-2-oxoethyl)-1-naphthamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-2-methylquinoline-4-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-1,2,3,4-tetrahydroacridine-9-carboxamide

N-[2-[(2S)-2-cyano-4,4-difluoropyrrolidin-1-yl]-2-oxoethyl]benzamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-2-oxo-1H-quinoline-4-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-2-[4-(3,4-difluorophenyl)triazol-1-yl]acetamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-3-phenylbenzamide

2,2-bis(4-chlorophenyl)-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]acetamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-3-hydroxyadamantane-1-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]quinoline-8-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-3-methoxybenzamide

2-[4-[bis(4-fluorophenyl)methyl]piperazin-1-yl]-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]acetamide

tert-butyl 4-[1-[2-[[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]amino]-2-oxoethyl]triazol-4-yl]piperazine-1-carboxylate

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]benzamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-1H-indole-3-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-3-cyclopentyloxy-4-methoxybenzamide

2-(4-chlorophenyl)-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]acetamide

N-[2-[(2S,4S)-4-azido-2-cyanopyrrolidin-1-yl]-2-oxoethyl]naphthalene-1-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-4-(trifluoromethoxy)benzamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]isoquinoline-4-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-3-methoxybenzenesulfonamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-3-hydroxy-2-methylquinoline-4-carboxamide

N-[2-[(2S)-2-cyano-4-methylidenepyrrolidin-1-yl]-2-oxoethyl]naphthalene-1-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-2-thiophen-2-ylacetamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]naphthalene-2-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-4-thiophen-2-ylbenzamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-2-naphthalen-1-ylacetamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-3-phenylpropanamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-2-naphthalen-1-yloxyacetamide

(S)-1-((S)-1-(4-phenylbutanoyl)pyrrolidine-2-carbonyl)pyrrolidine-2-carbonitrile

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-2-(4-methoxyphenyl)quinoline-4-carboxamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-4-[4-[(4-fluorophenyl)methyl]piperazin-1-yl]-4-oxobutanamide

2-[(5-cyanopyridin-2-yl)amino]-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]acetamide

N'-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-N-[(4-fluorophenyl)methyl]butanediamide

(2S)-1-(2-naphthalen-2-yloxyacetyl)pyrrolidine-2-carbonitrile

(2S)-1-(2-naphthalen-1-yloxyacetyl)pyrrolidine-2-carbonitrile

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-3-methylbutanamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-2-naphthalen-2-yloxyacetamide

2,6-dichloro-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]benzamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-1H-indole-2-carboxamide

N-[2-[(2S,4S)-4-azido-2-cyanopyrrolidin-1-yl]-2-oxoethyl]benzamide

N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]naphthalene-1-sulfonamide

4-[4-[bis(4-fluorophenyl)methyl]piperazin-1-yl]-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]-4-oxobutanamide

N'-[bis(4-fluorophenyl)methyl]-N-[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]butanediamide

(2S)-1-(2-benzamidoacetyl)-N-tert-butylpyrrolidine-2-carboxamide

N-[2-[(2S)-2-cyano-4-ethylpyrrolidin-1-yl]-2-oxoethyl]naphthalene-1-carboxamide

(2S)-1-[2-(3-oxo-1H-isoindol-2-yl)acetyl]pyrrolidine-2-carbonitrile

N-[2-[(2S)-2-cyanopiperidin-1-yl]-2-oxoethyl]naphthalene-1-carboxamide

(2S)-1-{2-[(3-hydroxyadamantan-1-yl)amino]acetyl}pyrrolidine-2-carbonitrile

(1R)-3-oxo-3-[3-(trifluoroethyl)-5,6-dihydro[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl]-1-(2,4,5-trifluorobenzyl)propylamine

N-(2-oxo-2-pyrrolidin-1-ylethyl)benzamide

(2S)-1-[(2R)-1-(4-phenylbutanoyl)pyrrolidine-2-carbonyl]pyrrolidine-2-carbonitrile

N-[2-[(2S,4S)-2-cyano-4-(trifluoromethyl)pyrrolidin-1-yl]-2-oxoethyl]naphthalene-1-carboxamide

N-[2-[(2S,4R)-4-azido-2-cyanopyrrolidin-1-yl]-2-oxoethyl]naphthalene-1-carboxamide

N-[2-[(2S)-2-cyanopiperidin-1-yl]-2-oxoethyl]benzamide

N-[2-[(2S)-2-cyano-4-methylpyrrolidin-1-yl]-2-oxoethyl]benzamide

1-[(2S,4S)-4-azido-2-(pyrrolidine-1-carbonyl)pyrrolidin-1-yl]-4-phenylbutan-1-one

tert-butyl 4-[[1-[(3S,5S)-1-(4-phenylbutanoyl)-5-(pyrrolidine-1-carbonyl)pyrrolidin-3-yl]triazol-4-yl]methyl]piperazine-1-carboxylate

benzyl (2S,4S)-2-(pyrrolidine-1-carbonyl)-4-(4-trimethylsilyltriazol-1-yl)pyrrolidine-1-carboxylate

4-phenyl-1-[(2S,4S)-4-(4-pyridin-2-yltriazol-1-yl)-2-(pyrrolidine-1-carbonyl)pyrrolidin-1-yl]butan-1-one

(2S)-1-[(2S,4S)-4-azido-1-(4-phenylbutanoyl)pyrrolidine-2-carbonyl]pyrrolidine-2-carbonitrile

tert-butyl N-[[1-[(3S,5S)-1-(4-phenylbutanoyl)-5-(pyrrolidine-1-carbonyl)pyrrolidin-3-yl]triazol-4-yl]methyl]carbamate

tert-butyl N-[[1-[(3S,5S)-5-[(2S)-2-cyanopyrrolidine-1-carbonyl]-1-(4-phenylbutanoyl)pyrrolidin-3-yl]triazol-4-yl]methyl]carbamate

(S)-4-phenyl-1-(2-(pyrrolidine-1-carbonyl)pyrrolidin-1-yl)butan-1-one

benzyl (2S,4S)-2-(pyrrolidine-1-carbonyl)-4-(triazol-1-yl)pyrrolidine-1-carboxylate

4-phenyl-1-[(2S,4S)-4-[4-(piperazin-1-ylmethyl)triazol-1-yl]-2-(pyrrolidine-1-carbonyl)pyrrolidin-1-yl]butan-1-one

(S)-benzyl 2-(pyrrolidine-1-carbonyl)pyrrolidine-1-carboxylate

1-[(2S,4R)-4-azido-2-(pyrrolidine-1-carbonyl)pyrrolidin-1-yl]-4-phenylbutan-1-one

benzyl (2S,4S)-4-[4-[[(2-methylpropan-2-yl)oxycarbonylamino]methyl]triazol-1-yl]-2-(pyrrolidine-1-carbonyl)pyrrolidine-1-carboxylate

benzyl (2S,4S)-4-azido-2-(pyrrolidine-1-carbonyl)pyrrolidine-1-carboxylate

tert-butyl N-[[1-[(3R,5S)-1-(4-phenylbutanoyl)-5-(pyrrolidine-1-carbonyl)pyrrolidin-3-yl]triazol-4-yl]methyl]carbamate

1-[(2S,4S)-4-[4-(4-bromophenyl)triazol-1-yl]-2-(pyrrolidine-1-carbonyl)pyrrolidin-1-yl]-4-phenylbutan-1-one

1-[(2S,4S)-4-(4-cyclopropyltriazol-1-yl)-2-(pyrrolidine-1-carbonyl)pyrrolidin-1-yl]-4-phenylbutan-1-one

benzyl (2S,4S)-4-(4-pyridin-2-yltriazol-1-yl)-2-(pyrrolidine-1-carbonyl)pyrrolidine-1-carboxylate

1-[(2S,4S)-4-[4-(morpholin-4-ylmethyl)triazol-1-yl]-2-(pyrrolidine-1-carbonyl)pyrrolidin-1-yl]-4-phenylbutan-1-one

1-((2S,4S)-4-(4-(aminomethyl)-1H-1,2,3-triazol-1-yl)-2-(pyrrolidine-1-carbonyl)pyrrolidin-1-yl)-4-phenylbutan-1-one hydrochloride

(2S,4S)-1-((2S,3R)-2-amino-3-methylpentanoyl)-4-azidopyrrolidine-2-carbonitrile

(2S,3R)-2-amino-1-(isoindolin-2-yl)-3-methylpentan-1-one

(2S)-2-amino-4-[4-[bis(4-fluorophenyl)methyl]piperazin-1-yl]-1-(1,3-dihydroisoindol-2-yl)butane-1,4-dione

(2S)-2-amino-4-(4-(bis(4-fluorophenyl)methyl)piperazin-1-yl)-1-(3-methylpyrrolidin-1-yl)butane-1,4-dione 2,2,2-trifluoroacetate

(2S)-2-amino-4-(4-(bis(4-fluorophenyl)methyl)piperazin-1-yl)-1-(3-ethylpyrrolidin-1-yl)butane-1,4-dione bis(2,2,2-trifluoroacetate)

1-[(2S,4S)-4-[4-(3,4-difluorophenyl)triazol-1-yl]-2-(pyrrolidine-1-carbonyl)pyrrolidin-1-yl]-4-phenylbutan-1-one

1-[(2S,4S)-4-[4-(2-chlorophenyl)triazol-1-yl]-2-(pyrrolidine-1-carbonyl)pyrrolidin-1-yl]-4-phenylbutan-1-one

1-[(2S,4S)-4-(4-cyclohexyltriazol-1-yl)-2-(pyrrolidine-1-carbonyl)pyrrolidin-1-yl]-4-phenylbutan-1-one

1-[(2S,4S)-4-[4-(2,4-difluorophenyl)triazol-1-yl]-2-(pyrrolidine-1-carbonyl)pyrrolidin-1-yl]-4-phenylbutan-1-one