Morpholinone compounds as factor IXA inhibitors

1. A compound of the Formula:

or a pharmaceutically acceptable salt thereof, wherein

A is

Y, attached to a carbon or nitrogen ring atom, is

1) halogen,

2) —(C 1 -C 6 )-alkyl,

3) —(C 1 -C 3 )-haloalkyl,

4) —(C 3 -C 8 )-cycloalkyl,

5) —OH,

6) —O—(C 1 -C 6 )-alkyl,

7) —O—(C 1 -C 3 )-haloalkyl,

8) ═O (oxo),

wherein said —(C 1 -C 6 )-alkyl part of 2) and 6) of said Y is unsubstituted or substituted independently with the substituents selected from the group consisting of —(C 3 -C 8 )-cycloalkyl, —C(O)OH, and —C(O)—(C 1 -C 6 )-alkyl,

B is

provided that

when A is

B is not

and

when A is

B is not

2. The compound of claim 1 of the Formula:

or a pharmaceutically acceptable salt thereof, wherein

A is

B is

provided that

when A is

B is not

and

when A is

B is not

3. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein the absolute configuration of the Formula is

4. A compound of claim 1 , which is

2-(3-((R)-2-((R)-2-(4-carbamimidoylphenylamino)-1-hydroxy-2-oxoethyl)-3-oxomorpholino)phenyl)acetate,

(R)—N-(4-carbamimidoylphenyl)-2-hydroxy-2-((R)-4-(3-methyl-5-(pyrrolidine-1-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(R)-2-hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(3-methyl-5-(pyrrolidine-1-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

2-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)-N-methylbenzamido)acetic acid,

2-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)-N-methylbenzamido)acetate,

(S)-1-(3-((R)-2-((R)-2-(4-carbamimidoylphenylamino)-1-hydroxy-2-oxoethyl)-3-oxomorpholino)benzoyl)pyrrolidine-2-carboxylic acid,

1-(3-((R)-2-((R)-2-(4-carbamimidoylphenylamino)-1-hydroxy-2-oxoethyl)-3-oxomorpholino)benzoyl)pyrrolidine-2-carboxylate,

3-((R)-2-((R)-2-(4-carbamimidoylphenylamino)-1-hydroxy-2-oxoethyl)-3-oxomorpholino)-N-methyl-N-(2-oxo-2-(pyrrolidin-1-yl)ethyl)benzamide,

3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)-N-methyl-N-(2-oxo-2-(pyrrolidin-1-yl)ethyl)benzamide,

(R)—N-(4-carbamimidoylphenyl)-2-hydroxy-2-((R)-4-(3-methyl-5-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(R)-2-hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(3-methyl-5-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(R)-2-hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(3-((R)-3-methoxypyrrolidine-1-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(R)-2-hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(3-((S)-3-methoxypyrrolidine-1-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(R)-2-((R)-4-(3-chloro-4-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxy-N-(1-iminoisoindolin-5-yl)acetamide,

(R)-2-hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(3-(2-morpholino-2-oxoethyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(S)-1-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)benzoyl)pyrrolidine-2-carboxylic acid,

1-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)benzoyl)pyrrolidine-2-carboxylate,

2-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)phenyl)acetate,

2-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)phenyl)acetic acid,

2-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)-N-methylbenzamido)acetate,

2-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)phenyl)-2-methylpropanoate,

(R)-2-hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)-N-methyl-N-(2-morpholino-2-oxoethyl)benzamide,

(R)-2-hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(3-(2-((R)-3-methoxypyrrolidin-1-yl)-2-oxoethyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(R)-2-hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(3-(2-((S)-3-methoxypyrrolidin-1-yl)-2-oxoethyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

2-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)phenyl)-2-methylpropanoate,

2-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)phenyl)acetate,

(R)-2-hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(3-(4-methyl-3-oxopiperazine-1-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

2-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)phenyl)-2-methylpropanoate,

(R)-2-hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(3-(2-(4-methyl-3-oxopiperazin-1-yl)-2-oxoethyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(R)-2-((R)-4-(3-(2-(dimethylamino)-2-oxoethyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxy-N-(1-iminoisoindolin-5-yl)acetamide,

1-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)benzoyl)piperidine-4-carboxylic acid,

1-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)benzoyl)piperidine-4-carboxylate,

2-(3-((R)-2-((R)-1-acetoxy-2-(1-imino-3-oxoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)-N-methylbenzamido)acetic acid,

(R)—N-(1,3-diiminoisoindolin-5-yl)-2-((R)-4-(3-(2-(dimethylamino)-2-oxoethyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)-2-(1-imino-3-oxoisoindolin-5-ylamino)-1-((R)-4-(3-(methyl(2-oxo-2-(pyrrolidin-1-yl)ethyl)carbamoyl)phenyl)-3-oxomorpholin-2-yl)-2-oxoethyl acetate,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-((R)-4-(4-fluoro-3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-((R)-4-(4-chloro-3-((4,4-difluoropiperidin-1-yl)methyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide),

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-hydroxy-2-((R)-3-oxo-4-(3-(3-oxomorpholino)phenyl)morpholin-2-yl)acetamide,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-((R)-4-(2-(difluoromethoxy)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-hydroxy-2-((R)-4-(2-isopropoxyphenyl)-3-oxomorpholin-2-yl)acetamide,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-((R)-4-(3-cyanophenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-((R)-4-(4-chloro-3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-hydroxy-2-((R)-4-(4-methyl-3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-hydroxy-2-((R)-3-oxo-4-(3-(trifluoromethoxy)phenyl)morpholin-2-yl)acetamide,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-hydroxy-2-((R)-3-oxo-4-(3-(trifluoromethyl)phenyl)morpholin-2-yl)acetamide,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-((R)-4-(4-chloro-3-(1,2,3,4-tetrahydroisoquinoline-2-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-((R)-4-(4-chloro-3-(4,4-difluoropiperidine-1-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-((R)-4-(3-fluoro-4-(trifluoromethyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)—N-(4-carbamimidoyl-3-fluorophenyl)-2-hydroxy-2-((R)-3-oxo-4-(3-(3-oxomorpholino)phenyl)morpholin-2-yl)acetamide,

(R)-2-hydroxy-N-(1-imino-7-(trifluoromethyl)isoindolin-5-yl)-2-((R)-3-oxo-4-(3-(3-oxomorpholino)phenyl)morpholin-2-yl)acetamide,

(R)-2-Hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-3-oxo-4-(3-(trifluoromethoxy)phenyl)morpholin-2-yl)acetamide,

Ethyl 2-(3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)phenoxy)acetate,

(R)-2-Hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(4-methoxybenzyl)-3-oxomorpholin-2-yl)acetamide,

(R)-2-((R)-4-(3-(Benzyloxy)phenyl)-3-oxomorpholin-2-yl)-2-hydroxy-N-(1-iminoisoindolin-5-yl)acetamide,

(R)—N-(1-Aminoisoquinolin-6-yl)-2-((R)-4-(4-fluoro-3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

N-(2,3-Dihydro-1-imino-1h-isoindol-5-yl)-4-[2-[(dimethylamino)carbonyl]phenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

N-(2,3-Dihydro-1-imino-1H-isoindol-5-yl)-alpha(R)-hydroxy-3-oxo-4-[2-(1-pyrrolidinylcarbonyl)phenyl]-2(R)-morpholineacetamide,

4-(2-Cyanophenyl)-N-(2,3-dihydro-1-imino-1h-isoindol-5-yl)-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

N-(2,3-Dihydro-1-imino-1h-isoindol-5-yl)-4-[4-fluoro-3-(4-morpholinylcarbonyl)phenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

N-(2,3-Dihydro-1-imino-1h-isoindol-5-yl)-4-[4-fluoro-3-[(3 (R)-methyl-4-morpholinyl)carbonyl]phenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

N-(2,3-Dihydro-1-imino-1h-isoindol-5-yl)-4-[4-fluoro-3-[(3 (S)-methyl-4-morpholinyl)carbonyl]phenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

N-[4-(Aminoiminomethyl)phenyl]-4-(2-cyanophenyl)-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

N-(4-Amino-7-quinazolinyl)-4-[4-fluoro-3-(4-morpholinylcarbonyl)phenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

[3-[2(R)-[2-[(3-Amino-1,2-benzisoxazol-6-yl)amino]-1 (R)-hydroxy-2-oxoethyl]-3-oxo-4-morpholinyl]phenyl]pentafluorosulfur,

[4-[2(R)-[2-[(3-Amino-1,2-benzisoxazol-6-yl)amino]-1 (R)-hydroxy-2-oxoethyl]-3-oxo-4-morpholinyl]phenyl]pentafluorosulfur,

N-(3-Amino-5-fluoro-1,2-benzisoxazol-6-yl)-4-[4-fluoro-3-(4-morpholinylcarbonyl)phenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

N-(2-Amino-6-quinazolinyl)-4-[4-fluoro-3-(4-morpholinylcarbonyl)phenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

(R)-2-((R)-4-(5-fluoro-2-isopropoxyphenyl)-3-oxomorpholin-2-yl)-2-hydroxy-N-(1-iminoisoindolin-5-yl)acetamide,

(R)-2-hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-3-oxo-4-(2-(trifluoromethyl)phenyl)morpholin-2-yl)acetamide,

(R)-2-((R)-4-(2-(difluoromethoxy)phenyl)-3-oxomorpholin-2-yl)-2-hydroxy-N-(1-iminoisoindolin-5-yl)acetamide,

(R)-2-hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(2-isopropoxyphenyl)-3-oxomorpholin-2-yl)acetamide,

(R)-2-hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-3-oxo-4-(2-(trifluoromethoxy)phenyl)morpholin-2-yl)acetamide,

N-(3-Amino-1,2-benzisoxazol-6-yl)-4-[4-fluoro-3-[(tetrahydro-2H-pyran-4-yl)oxy]phenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

N-(3-Amino-1,2-benzisoxazol-6-yl)-4-[3-[(3,3-difluoro-1-azetidinyl)carbonyl]-4-fluorophenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

N-(3-Amino-1,2-benzisoxazol-6-yl)-4-[3-[(4,4-difluoro-1-piperidinyl)carbonyl]-4-fluorophenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

N-(3-amino-1,2-benzisoxazol-6-yl)-4-[4-chloro-3-[3-(1,1-dimethylethyl)-1,2,4-oxadiazol-5-yl]phenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

N-(3-amino-1,2-benzisoxazol-6-yl)-4-[2-fluoro-5-(trifluoromethyl)phenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

or a pharmaceutically acceptable salt thereof.

5. A pharmaceutical composition comprising at least one compound of claim 1 , or a pharmaceutically acceptable salt, solvate, or ester thereof and at least one pharmaceutically acceptable carrier.

6. A pharmaceutical composition comprising:

a therapeutically effective amount of at least one compound of claim 1 or a pharmaceutically acceptable salt thereof, and at least one pharmaceutically acceptable carrier, and an effective amount of at least one agent selected from the group consisting of: (a) anticoagulants, (b) anti-thrombin agents, (c) anti-platelet agents, (d) fibrinolytics, (e) hypolipidemic agents, (f) antihypertensive agents, and (g) anti-ischemic agents.

7. A pharmaceutical composition comprising:

a therapeutically effective amount of at least one compound of claim 1 or a pharmaceutically acceptable salt thereof, and at least one pharmaceutically acceptable carrier, and an effective amount of at least one agent selected from the group consisting of (a-1) warfarin, (a-2) heparin, (a-3) aprotinin, (a-4) synthetic pentasaccharide, (a-5) direct acting thrombin inhibitors including hirudin and argatroban, (a-6) a factor VIIa inhibitor, (a-7) a factor VIIIa inhibitor, (a-8) a factor IXa inhbitor different from the compounds of Formula (I), (a-9) a factor Xa inhibitor, (a-10) a factor XIa inhibitor, (a-11) a thrombin inhibitor, (a-12) a TAFI, (a-13) a fibrinogen inhibitor, (b-1) a boroarginine derivative, (b-2) a boropeptide, (b-3) heparin, (b-4) hirudin, (b-5) argatroban, (c-1) a NSAID, (c-2) a IIb/IIIa antagonist, (c-3) a thromboxane-A2-receptor antagonist, (c-4) a thromboxane-A2-synthetase inhibitor, (c-5) a PDE-III inhibitor, (c-6) a PDE V inhibitor, (c-7) a ADP receptor antagonist, (c-8) an antagonist of the purinergic receptor P2Y1, (c-9) an antagonist of the purinergic receptor P2Y12, (d-1) tissue plasminogen activator (TPA, natural or recombinant) and modified forms thereof, (d-2) anistreplase, (d-3) urokinase, (d-4) streptokinase, (d-5) tenecteplase (TNK), (d-6) lanoteplase (nPA), (d-7) a factor VIIa inhibitor, (d-8) a PAI-I inhibitor, (d-9) an alpha-2-antiplasmin inhibitor, (d-10) an anisoylated plasminogen streptokinase activator complex, (e-1) a HMG-CoA reductase inhibitor, (e-2) a squalene synthetase inhibitor, (e-3) a fibrate, (e-4) a bile acid sequestrant, (e-5) an ACAT inhibitor, (e-6) a MTP inhibitor, (e-7) a lipooxygenase inhibitor, (e-8) a cholesterol absorption inhibitor, (e-9) a cholesterol ester transfer protein inhibitor, (f-1) an alpha adrenergic blocker, (f-2) a beta adrenergic blocker, (f-3) a calcium channel blocker, (f-4) a diuretics, (f-5) a rennin inhibitor, (f-6) an angiotensin-converting enzyme inhibitor, (f-7) an angiotensin-II-receptor antagonist, (f-8) an ET receptor antagonist, (f-9) a Dual ET/All antagonist, (f-10) a neutral endopeptidase inhibitors, (f-11) a vasopepsidase inhibitor, (g-1) a Class I agent, (g-2) a Class II agent, (g-3) a Class III agent, a (g-4) Class IV agent, (g-5) a K+ cannel opener, (g-6) an IKur inhibitor and (g-7) a cardiac glycoside.

8. A compound of claim 1 , which is

(2R)-2-[(2R)-4-(4-tert-butylphenyl)-3-oxomorpholin-2-yl]-2-hydroxy-N-[4-(N-methylcarbamimidoyl)phenyl]acetamide,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-3-oxo-4-(1-oxo-2,3-dihydroisoindol-5-yl)morpholin-2-yl]acetamide,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-3-oxo-4-(2-oxo-1H-quinolin-6-yl)morpholin-2-yl]acetamide,

(2R)-2-[(2R)-4-[7-(difluoromethoxy)-2-oxo-1H-quinolin-6-yl]-3-oxomorpholin-2-yl]-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)acetamide,

(2R)—N-(4-carbamimidoylphenyl)-2-hydroxy-2-[(2R)-3-oxo-4-(2-oxo-1H-quinolin-6-yl)morpholin-2-yl]acetamide,

(2R)—N-(4-carbamimidoyl-3-fluorophenyl)-2-hydroxy-2-[(2R)-3-oxo-4-(2-oxo-1H-quinolin-6-yl)morpholin-2-yl]acetamide,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-3-oxo-4-(2-oxo-1H-quinolin-7-yl)morpholin-2-yl]acetamide,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-4-(1-methyl-2-oxoquinolin-7-yl)-3-oxomorpholin-2-yl]acetamide,

(2R)-2-[(2R)-4-[1-(cyclopropylmethyl)-2-oxoquinolin-7-yl]-3-oxomorpholin-2-yl]-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)acetamide,

2-[7-[(2R)-2-[(1R)-1-hydroxy-2-[(1-imino-2,3-dihydroisoindol-5-yl)amino]-2-oxoethyl]-3-oxomorpholin-4-yl]-2-oxoquinolin-1-yl]acetate,

2-[7-[(2R)-2-[(1R)-1-hydroxy-2-[(1-imino-2,3-dihydroisoindol-5-yl)amino]-2-oxoethyl]-3-oxomorpholin-4-yl]-2-oxoquinolin-1-yl]acetic acid,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-4-(8-methyl-2-oxo-1H-quinolin-7-yl)-3-oxomorpholin-2-yl]acetamide,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-4-(2-methoxyquinolin-7-yl)-3-oxomorpholin-2-yl]acetamide,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-3-oxo-4-quinolin-7-ylmorpholin-2-yl]acetamide,

(2R)—N-(3-amino-1,2-benzisoxazol-6-yl)-2-hydroxy-2-[(2R)-3-oxo-4-quinolin-7-ylmorpholin-2-yl]acetamide,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-3-oxo-4-(2-oxo-1H-quinolin-5-yl)morpholin-2-yl]acetamide,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-3-oxo-4-(1-oxo-3,4-dihydro-2H-isoquinolin-6-yl)morpholin-2-yl]acetamide,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-3-oxo-4-(2-oxo-3,4-dihydro-1H-quinolin-7-yl)morpholin-2-yl]acetamide,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-4-(1-methyl-2-oxo-3,4-dihydroquinolin-7-yl)-3-oxomorpholin-2-yl]acetamide,

(2R)-2-[(2R)-4-[1-(cyclopropylmethyl)-2-oxo-3,4-dihydroquinolin-7-yl]-3-oxomorpholin-2-yl]-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)acetamide,

methyl 2-[7-[(2R)-2-[(1R)-1-hydroxy-2-[(1-imino-2,3-dihydroisoindol-5-yl)amino]-2-oxoethyl]-3-oxomorpholin-4-yl]-2-oxo-3,4-dihydroquinolin-1-yl]acetate,

2-[7-[(2R)-2-[(1R)-1-hydroxy-2-[(1-imino-2,3-dihydroisoindol-5-yl)amino]-2-oxoethyl]-3-oxomorpholin-4-yl]-2-oxo-3,4-dihydroquinolin-1-yl]acetic acid,

(2R)—N-(4-carbamimidoyl-3-fluorophenyl)-2-hydroxy-2-[(2R)-3-oxo-4-(2-oxo-3,4-dihydro-1H-quinolin-7-yl)morpholin-2-yl]acetamide,

(2R)—N-(3-amino-1,2-benzoxazol-6-yl)-2-hydroxy-2-[(2R)-3-oxo-4-(2-oxo-3,4-dihydro-1H-quinolin-7-yl)morpholin-2-yl]acetamide,

(2R)—N-(1-aminoisoquinolin-6-yl)-2-hydroxy-2-[(2R)-3-oxo-4-(2-oxo-3,4-dihydro-1H-quinolin-7-yl)morpholin-2-yl]acetamide,

(2R)—N-(4-aminoquinazolin-7-yl)-2-hydroxy-2-[(2R)-3-oxo-4-(2-oxo-3,4-dihydro-1H-quinolin-7-yl)morpholin-2-yl]acetamide,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-3-oxo-4-(2-oxo-3,4-dihydro-1H-quinolin-5-yl)morpholin-2-yl]acetamide,

(2R)-2-hydroxy-2-[(2R)-4-[2-(3-hydroxy-3-methylbutoxy)phenyl]-3-oxomorpholin-2-yl]-N-(1-imino-2,3-dihydroisoindol-5-yl)acetamide,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-4-[2-(3-methoxy-3-methylbutoxy)phenyl]-3-oxomorpholin-2-yl]acetamide,

(2R)-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)-2-[(2R)-3-oxo-4-[2-(2-oxopiperidin-1-yl)phenyl]morpholin-2-yl]acetamide,

(2R)-2-[(2R)-4-[2-(difluoromethoxy)-5-fluorophenyl]-3-oxomorpholin-2-yl]-2-hydroxy-N-(1-imino-2,3-dihydroisoindol-5-yl)acetamide,

methyl 2-(difluoromethoxy)-3-[(2R)-2-[(1R)-1-hydroxy-2-[(1-imino-2,3-dihydro-isoindol-5-yl)amino]-2-oxoethyl]-3-oxomorpholin-4-yl]benzoate,

2-(difluoromethoxy)-3-[(2R)-2-[(1R)-1-hydroxy-2-[(1-imino-2,3-dihydroisoindol-5-yl)amino]-2-oxoethyl]-3-oxomorpholin-4-yl]benzoic acid,

2-(difluoromethoxy)-3-[(2R)-2-[(1R)-1-hydroxy-2-[(1-imino-2,3-dihydroisoindol-5-yl)amino]-2-oxoethyl]-3-oxomorpholin-4-yl]-N,N-dimethylbenzamide,

2-(difluoromethoxy)-3-[2-[(1-hydroxy-2-[(1-imino-2,3-dihydroisoindol-5-yl)amino]-2-oxoethyl]-3-oxomorpholin-4-yl]benzamide,

methyl 2-[(2R)-2-[(1R)-1-hydroxy-2-[(1-imino-2,3-dihydroisoindol-5-yl)amino]-2-oxoethyl]-3-oxomorpholin-4-yl]-5-(trifluoromethoxy)benzoate,

2-[(2R)-2-[(1R)-1-hydroxy-2-[(1-imino-2,3-dihydroisoindol-5-yl)amino]-2-oxoethyl]-3-oxomorpholin-4-yl]-5-(trifluoromethoxy)benzoic acid,

2-[(2R)-2-[(1R)-1-hydroxy-2-[(1-imino-2,3-dihydroisoindol-5-yl)amino]-2-oxoethyl]-3-oxomorpholin-4-yl]-5-(trifluoromethoxy)benzamide,

(2R)—N-(3-amino-1,2-benzisoxazol-6-yl)-2-hydroxy-2-[(2R)-3-oxo-4-(2-oxo-1H-quinolin-6-yl)morpholin-2-yl]acetamide,

(2R)—N-(3-amino-1,2-benzisoxazol-6-yl)-2-hydroxy-2-[(2R)-3-oxo-4-(2-oxo-1H-quinolin-7-yl)morpholin-2-yl]acetamide, or

(2R)—N-(3-amino-1,2-benzisoxazol-6-yl)-2-hydroxy-2-[(2R)-3-oxo-4-(2-oxo-1H-quinolin-5-yl)morpholin-2-yl]acetamide,

or a pharmaceutically acceptable salt thereof.

9. A compound of claim 1 , which is

(R)—N-(4-carbamimidoylphenyl)-2-hydroxy-2-((R)-4-(3-((S)-2-methylpyrrolidine-1-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(R)—N-(4-carbamimidoylphenyl)-2-hydroxy-2-((R)-4-(2-methyl-3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(R)—N-(4-carbamimidoylphenyl)-2-hydroxy-2-((R)-4-(2-methyl-3-(pyrrolidine-1-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(R)-2-((R)-4-(3-(azetidine-1-carbonyl)-5-fluorophenyl)-3-oxomorpholin-2-yl)-N-(4-carbamimidoylphenyl)-2-hydroxyacetamide,

(R)-2-((R)-4-(3-(azetidine-1-carbonyl)-2-methylphenyl)-3-oxomorpholin-2-yl)-N-(4-carbamimidoylphenyl)-2-hydroxyacetamide,

(R)-2-((R)-4-(5-(azetidine-1-carbonyl)-2-methylphenyl)-3-oxomorpholin-2-yl)-N-(4-carbamimidoylphenyl)-2-hydroxyacetamide,

(R)—N-(4-carbamimidoylphenyl)-2-hydroxy-2-((R)-3-oxo-4-(6-(trifluoromethyl)pyridin-2-yl)morpholin-2-yl)acetamide,

(R)—N-(4-carbamimidoylphenyl)-2-hydroxy-2-((R)-4-(2-methyl-5-(pyrrolidine-1-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(R)-2-((R)-4-(3-(azetidine-1-carbonyl)-5-methylphenyl)-3-oxomorpholin-2-yl)-N-(4-carbamimidoylphenyl)-2-hydroxyacetamide,

(R)—N-(4-carbamimidoylphenyl)-2-hydroxy-2-((R)-4-(2-methyl-5-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

(S)-1-(3-((R)-2-((R)-2-(4-carbamimidoylphenylamino)-1-hydroxy-2-oxoethyl)-3-oxomorpholino)-5-fluorobenzoyl)pyrrolidine-2-carboxylic acid,

1-(3-((R)-2-((R)-2-(4-carbamimidoylphenylamino)-1-hydroxy-2-oxoethyl)-3-oxomorpholino)-5-fluorobenzoyl)pyrrolidine-2-carboxylate,

1-(3-((R)-2-((R)-2-(4-carbamimidoylphenylamino)-1-hydroxy-2-oxoethyl)-3-oxomorpholino)-5-fluorobenzoyl)pyrrolidine-2-carboxylate,

2-(3-((R)-2-((R)-2-(4-carbamimidoylphenylamino)-1-hydroxy-2-oxoethyl)-3-oxomorpholino)-5-fluoro-N-methylbenzamido)acetic acid,

2-(3-((R)-2-((R)-2-(4-carbamimidoylphenylamino)-1-hydroxy-2-oxoethyl)-3-oxomorpholino)-5-fluoro-N-methylbenzamido)acetate,

3-((R)-2-((R)-2-(4-carbamimidoylphenylamino)-1-hydroxy-2-oxoethyl)-3-oxomorpholino)-N-(2-(dimethylamino)-2-oxoethyl)-5-fluoro-N-methylbenzamide,

(R)—N-(1,3-diiminoisoindolin-5-yl)-2-hydroxy-2-((R)-4-(3-(2-(4-methyl-3-oxopiperazin-1-yl)-2-oxoethyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

N-(2-(dimethylamino)-2-oxoethyl)-3-((R)-2-((R)-1-hydroxy-2-(1-iminoisoindolin-5-ylamino)-2-oxoethyl)-3-oxomorpholino)-N-methylbenzamide,

2-((S)-hydroxy((R)-3-oxo-4-p-tolylmorpholin-2-yl)methyl)-4-oxo-1,4-dihydroquinazoline-6-carboximidamide,

1,1-dioxo-3-((S)-hydroxy((R)-3-oxo-4-p-tol(Example ylmorpholin-2-yl)methyl)-4H-benzo[e][1,2,4]thiadiazine-7-carboximidamide,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-((R)-4-(4-chloro-3-(morpholinomethyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)—N-(3-aminobenzo[d]isoxazol-6-yl)-2-hydroxy-2-((R)-4-(3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)acetamide,

3-((R)-2-((R)-2-(4-carbamimidoyl-3-fluorophenylamino)-1-hydroxy-2-oxoethyl)-3-oxomorpholino)benzoic acid,

(R)—N-(4-carbamimidoyl-3,5-difluorophenyl)-2-hydroxy-2-((R)-3-oxo-4-(3-(3-oxomorpholino)phenyl)morpholin-2-yl)acetamide,

(R)—N-(4-carbamimidoyl-2,3-difluorophenyl)-2-hydroxy-2-((R)-3-oxo-4-(3-(3-oxomorpholino)phenyl)morpholin-2-yl)acetamide,

(R)—N-(4-carbamimidoyl-2,5-difluorophenyl)-2-hydroxy-2-((R)-3-oxo-4-(3-(3-oxomorpholino)phenyl)morpholin-2-yl)acetamide,

(R)—N-(3-(aminomethyl)-4-cyano-5-(trifluoromethyl)phenyl)-2-hydroxy-2-((R)-3-oxo-4-(3-(3-oxomorpholino)phenyl)morpholin-2-yl)acetamide,

(R)-2-Hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(2-methyl-1-oxoisoindolin-5-yl)-3-oxomorpholin-2-yl)acetamide,

(R)-2-Hydroxy-N-(1-iminoisoindolin-5-yl)-2-((R)-4-(2-methyl-3-oxoisoindolin-5-yl)-3-oxomorpholin-2-yl)acetamide hydrochloride,

(R)-2-((R)-4-(2-(Cyclopropylmethyl)-3-oxoisoindolin-5-yl)-3-oxomorpholin-2-yl)-2-hydroxy-N-(1-iminoisoindolin-5-yl)acetamide,

(R)—N-(4-(Aminomethyl)-3-fluorophenyl)-2-hydroxy-2-((R)-3-oxo-4-(3-(3-oxomorpholino)phenyl)morpholin-2-yl)acetamide,

(R)—N-(4-Guanidinophenyl)-2-hydroxy-2-((R)-3-oxo-4-(3-(3-oxomorpholino)phenyl)morpholin-2-yl)acetamide,

(R)—N-(4-(Aminomethyl)phenyl)-2-((R)-4-(4-fluoro-3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)-2-(4-Carbamoylphenylamino)-1-((R)-4-(4-fluoro-3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-oxoethyl acetate,

(R)-2-((R)-4-(4-Fluoro-3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxy-N-(1,2,3,4-tetrahydroisoquinolin-6-yl)acetamide,

(R)—N-(4-(Aminomethyl)-3-fluorophenyl)-2-((R)-4-(4-fluoro-3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)—N-(4-((R)-1-Aminoethyl)phenyl)-2-((R)-4-(4-fluoro-3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)—N—((R)-1-amino-2,3-dihydro-1H-inden-5-yl)-2-((R)-4-(4-fluoro-3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)—N—((S)-1-Amino-2,3-dihydro-1H-inden-5-yl)-2-((R)-4-(4-fluoro-3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

(R)—N-(2-Aminoquinolin-6-yl)-2-((R)-4-(4-fluoro-3-(morpholine-4-carbonyl)phenyl)-3-oxomorpholin-2-yl)-2-hydroxyacetamide,

N-(7-fluoro-2,3-dihydro-1-imino-1H-isoindol-5-yl)-alpha(R)-hydroxy-3-oxo-4-[3-(3-oxo-4-morpholinyl)phenyl]-2(R)-morpholineacetamide,

N-(4-chloro-2,3-dihydro-1-imino-1H-isoindol-5-yl)-alpha(R)-hydroxy-3-oxo-4-[3-(3-oxo-4-morpholinyl)phenyl]-2(R)-morpholineacetamide,

3-[2(R)-[2-[(2,3-Dihydro-1-imino-1h-isoindol-5-yl)amino]-1(R)-hydroxy-2-oxoethyl]-3-oxo-4-morpholinyl]benzoic acid,

Methyl 3-[2(R)-[2-[(2,3-dihydro-1-imino-1H-isoindol-5-yl)amino]-1(R)— hydroxy-2-oxoethyl]-3-oxo-4-morpholinyl]benzoate,

Methyl 2-[2(R)-[2-[(2,3-dihydro-1-imino-1h-isoindol-5-yl)amino]-1(R)-hydroxy-2-oxoethyl]-3-oxo-4-morpholinyl]benzoate,

N-(3-Amino-1,2-benzisoxazol-6-yl)-4-[4-fluoro-3-[2,2,2-trifluoro-1-(4-morpholinyl)ethyl]phenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

(R)-2-((R)-4-(5-chloro-2-isopropoxyphenyl)-3-oxomorpholin-2-yl)-2-hydroxy-N-(1-iminoisoindolin-5-yl)acetamide,

N-(3-Amino-1,2-benzisoxazol-6-yl)-4-[3-(difluoromethoxy)-4-fluorophenyl]-alpha(R)-hydroxy-3-oxo-2(R)-morpholineacetamide,

or a pharmaceutically acceptable salt thereof.