Plasma kallikrein inhibitors

1 . A compound of the formula:

wherein X is N or CH;

R 1 is selected from the group consisting of hydrogen, halo, hydroxy and C 1-6 alkyl;

R 2 is selected from the group consisting of hydrogen, halo, hydroxy and C 1-6 alkyl;

R 3 is selected from the group consisting of hydrogen, halo, hydroxy and C 1-6 alkyl, wherein said alkyl group is optionally substituted with one to four substituents independently selected from the group consisting of halo, cyano and OR x ;

R 4 is selected from the group consisting of hydrogen, halo, hydroxy and C 1-6 alkyl;

wherein said alkyl group is optionally substituted with one to four substituents independently selected from the group consisting of halo, cyano and OR x ;

R 5 is NR 9 R 10 or OR x ;

each R 6 is independently selected from the group consisting of hydrogen, halo, hydroxy and C 1-6 alkyl, wherein said alkyl group is optionally substituted with one to three halo;

each R 7 is selected from the group consisting of hydrogen, halo, hydroxy and C 1-6 alkyl, wherein said alkyl group is optionally substituted with one to three halo;

or R 6 and R 7 can be taken together with the carbon atom to which they are attached to form a 3-6 membered cycloalkyl group, which is optionally substituted with one or two halo;

R 8 is selected from the group consisting of hydrogen; halo; hydroxy; R x ; OR x ; phenyl; indane; OR y ; heteroaryl, which can be monocyclic or bicyclic; heterocyclyl; and C 3-6 cycloalkyl, which can be monocyclic or bicyclic; wherein said phenyl and heteroaryl groups are optionally substituted with one to three substituents independently selected from the group consisting of oxo, halo, R x , OR x , NR 9 R 10 , NR 9 (C═O)R x , NR 9 (C═O)OR x , (C═O)OR x , (C═O)NR 9 , R y and OR y ;

wherein said cycloalkyl and heterocyclyl groups are optionally substituted with one to three substituents independently selected from the group consisting of oxo, halo, R x and OR x ;

R 9 is hydrogen or C 1-3 alkyl;

R 10 is hydrogen or C 1-3 alkyl;

R x is hydrogen or C 1-6 alkyl, which is optionally substituted with one to three substituents selected from the group consisting of halo and hydroxy,

R y is phenyl, heterocyclyl or C 3-6 cycloalkyl, wherein said phenyl group is optionally substituted with one to three halo, said heterocyclyl group is optionally substituted with one or two oxo and said cycloalkyl group is optionally substituted with C 1-6 alkyl;

and n is an integer from zero to two;

or a pharmaceutically salt thereof.

2 . The compound of claim 1 wherein R 1 is halo and R 2 is halo; or a pharmaceutically acceptable salt thereof.

3 . The compound of claim 1 wherein R 3 is hydrogen or methyl and R 4 is hydrogen or methyl; or a pharmaceutically acceptable salt thereof.

4 . The compound of claim 1 wherein R 5 is NH 2 ; or a pharmaceutically acceptable salt thereof.

5 . The compound of claim 1 wherein n is zero or one; or

a pharmaceutically acceptable salt thereof.

6 . The compound of claim 1 wherein R 8 is phenyl;

wherein said phenyl is optionally substituted with one to three substituents independently selected from the group consisting of halo, R x , OR x , NR 9 R 10 , NR 9 (C═O)R x , NR 9 (C═O)OR x , (C═O)NR 9 , (C═O)OR y , R y and OR y ; or a pharmaceutically acceptable salt thereof.

7 . The compound of claim 1 wherein R 8 is phenyl;

wherein said phenyl is optionally substituted with one to three substituents independently selected from the group consisting of halo, R x , OR x , R y and OR y ; or a pharmaceutically acceptable salt thereof.

8 . The compound of claim 1 wherein n is one; R 6 is hydrogen and R 7 is hydrogen; or a pharmaceutically acceptable salt thereof.

9 . The compound of claim 1 selected from any one of compounds

(R)-1′-(5-Amino-1-(2,2,2-trifluoroethyl-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2,2,2-trifluoroethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluoro-5′,5′-dimethylspiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-amino-1-((R)-1,1,1-trifluorobutan-2-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-amino-1-((S)-1,1,1-trifluorobutan-2-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3-(trifluoromethyl)benzyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3-chlorobenzyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-5-Amino-1-(4-methylbenzyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-benzyl-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-5-Amino-1-(3-fluorobenzyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-benzyl-1H-pyrazole-4-carbonyl)-6-chloro-5-fluoro-5′,5′-dimethylspiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((tetrahydro-2H-pyran-4-yl)methyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(cyclopropylmethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-morpholinoethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2,2-difluorethyl)-1H-Pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-phenethyl-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin-2(1H)-one,

(R)-1′-(5-Amino-1-isobutyl-1H-pyrazole-4-carbonyl-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(tetrahydro-2H-pyran-4-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(bicyclo[1.1.1]pentan-1-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-(2,2,2-trifluoroethoxy)ethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin-2 (1H)-one,

(R)-1′-(5-Amino-1-(2-isopropoxyethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-cyclopentyl-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(tert-butyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-methoxyethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-ethyl-1-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((1-(trifluoromethyl)cyclopropyl)methyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3,3,3-trifluoropropyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(1-(4-fluorophenyl)cyclopropyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((1-fluorocyclopropyl)methyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(4-methyl-5-phenyl-4H-1,2,4-triazol-3-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(pyridin-3-ylmethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(pyridin-4-ylmethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3,4-difluorobenzyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-isopropyl-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-cyclohexyl-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin-2-(1H)-one,

(R)-1′-(5-Amino-1-(cyclohexylmethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-(4-chlorophenoxy)ethyl)-1H-pyrazole-4-carbonyl-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2,3-dihydro-1H-inden-2-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-5-Amino-1-(3-methoxybenzyl)-1H-pyrazole]-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-methoxybenzyl-1H-pyrazole-4-carbonyl-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-(dimethylamino)benzyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(4-chlorobenzyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((6-(trifluoromethyl)pyridin-3-yl)methyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-chlorobenzyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3-methylbenzyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(1-(4-fluorophenyl)cyclobutyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(1-(trifluoromethyl)cyclobutyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2,2,3,3,3-pentafluoropropyl-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(1,1,1-trifluoro-2-methylpropan-2-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(1-(trifluoromethyl)cyclopropyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2-(1H)-one,

(R)-1′-(5-Amino-1-(pyrimidin-5-ylmethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3,3-difluoro-1-(trifluoromethyl)cyclobutyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(4-(trifluoromethyl)tetrahydro-2H-pyran-4-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(pyrazin-2-ylmethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(pyridin-3-ylmethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((1S,2S or R,5R)-2-(trifluoromethyl)bicyclo[3.1.0]hexan-2-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-phenyl-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(4-methoxyphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(1H-indazol-6-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(6-fluoroquinolin-4-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-methylpyridin-3-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3-fluoropyridin-2-yl)-1-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3-(hydroxymethyl)-2-methylphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin-2(1H)-one,

(R)-1′-(5-Amino-1-(o-tolyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2,4-dichlorophenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin-2-(1H)-one,

(R)-1′-(5-Amino-1-(2-fluoro-4-methylphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)—N-(4-(5-Amino-4-(6-chloro-5-fluoro-2-oxo-1,2-dihydrospiro[benzo[d][1,3]oxazine-4,3′-piperidine]-1′-carbonyl)-1H-pyrazol-1-yl)phenyl)acetamide,

(R)-3-(5-Amino-4-(6-chloro-5-fluoro-2-oxo-1,2-dihydrospiro[benzo[d][1,3]oxazine-4,3′-piperidine]-1′-carbonyl)-1H-pyrazol-1-yl)benzoic acid,

(R)-1′-(5-Amino-1-phenyl-1H-pyrazole-4-carbonyl)-6-chloro-5-fluoro-5′,5′-dimethylspiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

Ethyl (R)-3-(5-amino-4-(6-chloro-5-fluoro-2-oxo-1,2-dihydrospiro[benzo[d][1,3]oxazine-4,3′-piperidine]-1′-carbonyl)-1H-pyrazol-1-yl)-4-methylbenzoate,

(R)—N-(3-(5-Amino-4-(6-chloro-5-fluoro-2-oxo-1,2-dihydrospiro[benzo[d][1,3]oxazine-4,3′-piperidine]-1′-carbonyl)-1H-pyrazol-1-yl)phenyl)acetamide,

(R)-1′-(5-Amino-1-(2-(trifluoromethoxy)phenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3-chloropyridin-4-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-4-(5-Amino-4-(6-chloro-5-fluoro-2-oxo-1,2-dihydrospiro[benzo[d][1,3]oxazine-4,3′-piperidine]-1′-carbonyl)-1H-pyrazol-1-yl)benzoic acid,

(R)-1′-(5-Amino-1-(4-(2-oxooxazolidin-3-yl)phenyl-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2,5-difluorophenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-(trifluoromethyl)phenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-chloro-5-fluorophenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin-2(1H)-one,

(R)-1′-(5-Amino-1-(2-methoxyphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-ethylphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin-2-(1H)-one,

(R)-1′-(5-Amino-1-(2-isopropylphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-chlorophenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-bromophenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-fluorophenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2,3-dimethylphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2,4-dimethylphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2,5-dimethylphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(5-fluoro-2-methylphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-cyclopropoxyphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-(difluoromethoxy)phenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2,2-difluorobenzo[d][1,3]dioxol-4-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin-2(1H)-one,

Methyl (R)-4-(S-amino-4-(6-chloro-5-fluoro-2-oxo-1,2-dihydrospiro[benzo[d][1,3]oxazine-4,3′-piperidine]-1′-carbonyl)-1H-pyrazol-1-yl)-3-methoxybenzoate,

(R)-1′-(5-Amino-1-(2,6-difluorophenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(5-chloro-2-methoxyphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-cyclopropylphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin-2-(1H)-one,

(R)-1′-(5-Amino-1-(2-phenoxyphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-cyclobutoxyphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-(1-methylcyclopropyl)phenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-(2,2,2-trifluoroethoxy)phenyl)-1H-pyrazole]-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(4-fluoro-2-methoxyphenyl)-1H-pyrazole-4-carbonyl)6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3,5-difluoro-2-methoxyphenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3,5-dichloropyridin-4-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(quinolin-4-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(8-fluoroquinolin-4-yl) 1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3-methylpyridin-4-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-difluoromethoxy)-5-fluorophenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(2-(difluoromethoxy)-3-fluorophenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3-methoxypyridin-2-yl)-1H-pyrazole-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-methyl-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-(3-chlorophenyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2-(1H)-one,

(R)-1′-(5-Amino-1-(p-tolyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((R or S)-1-(tetrahydro-2H-pyran-4-yl)propyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((S or R)-1-(tetrahydro-2H-pyran-4-yl)propyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((R or S)-2,2,2-trifluoro-1-(1-fluorocyclopropyl)ethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((S or R)-2,2,2-trifluoro-1-(1-fluorocyclopropyl)ethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((S or R)-1-phenylpropyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((R or S)-1-phenylpropyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((R or S)-3-methyl-1,1-dioxidotetrahydrothiophen-3-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((S or R)-3-methyl-1,1-dioxidotetrahydrothiophen-3-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin-2(1H)-one,

(R)-1′-(5-Amino-1-((R or S)-1,1,1-trifluoropropan-2-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((S or R)-1,1,1-trifluoropropan-2-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((R or S)-2,2,2-trifluoro-1-phenylethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((S or R)-2,2,2-trifluoro-1-phenylethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((R or S)-1-cyclopropyl-2,2,2-trifluoroethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((S or R)-1-cyclopropyl-2,2,2-trifluoroethyl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2-(1H)-one,

(R)-1′-(5-Amino-1-((R or S)-2-cyclopropyl-1,1,1-trifluoropropan-2-yl)-1H-pyrazole-4-carbonyl)-6-chloro-S-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((S or R)-2-cyclopropyl-1,1,1-trifluoropropan-2-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((R or S)-1,1,1-trifluoro-3-methoxy-2-methylpropan-2-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((S or R)-1,1,1-trifluoro-3-methoxy-2-methylpropan-2-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((R or S)-1,1,1-trifluorobutan-2-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluoro-5′,5′-dimethylspiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-1′-(5-Amino-1-((S or R)-1,1,1-trifluorobutan-2-yl)-1H-pyrazole-4-carbonyl)-6-chloro-5-fluoro-5′,5′-dimethylspiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

(R)-6-Chloro-5-fluoro-1′-1-(4-fluorobenzyl)-5-hydroxy-1H-pyrazole-4-carbonyl)spiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one, and

(R)-1′-(5-Amino-1-benzyl-1H-1,2,3-triazole-4-carbonyl)-6-chloro-5-fluorospiro[benzo[d][1,3]oxazine-4,3′-piperidin]-2(1H)-one,

or a pharmaceutically acceptable salt thereof.

10 . A pharmaceutical composition comprising a compound of claim 1 or a pharmaceutically acceptable salt thereof and a pharmaceutically acceptable carrier.

11 . A method for treating uveitis, posterior uveitis, wet age related macular edema, diabetic macular edema, diabetic retinopathy or retinal vein occlusion in a mammal comprising administering a composition of claim 10 to a mammal in need thereof.

12 . A method of treating diabetic retinopathy or diabetic macular edema in a mammal comprising administering a composition of claim 10 to a mammal in need thereof.

13 . A method of treating retinal vein occlusion in a mammal comprising administering a composition of claim 10 to a mammal in need thereof.

14 . The composition of claim 10 further comprising another agent selected from the group consisting of anti-inflammatory agents, anti-VEGF agents, immunosuppressive agents, anticoagulants, antiplatelet agents, and thrombolytic agents.

15 . A method for treating impaired visual activity, diabetic retinopathy, diabetic macular edema, retinal vein occlusion, hereditary angioedema, diabetes, pancreatitis, cerebral hemorrhage, or nephropathy, comprising administering a composition of claim 10 to a mammal in need of thereof.

16 . The method of claim 15 further comprising another agent selected from the group consisting of anti-inflammatory agents, anti-VEGF agents, immunosuppressive agents, anticoagulants, antiplatelet agents, and thrombolytic agents.