Spiropiperidine compounds useful as beta-secretase inhibitors for the treatment of alzheimer's disease

1. A compound of formula (I):

or its tautomer (I′)

wherein:

X is N;

X′ is NH;

Z is O;

R 1 is selected from the group consisting of

(3) —C 0-6 alkyl-C 6-10 aryl,

(5) —C 0-6 alkyl-C 3-12 carbocyclic,

said R 1 carbocyclic moiety is substituted with one or more

(a) —OR 4 ,

(b) ═O,

(c) halogen,

(d) cyano,

(e) —C(═O)—NR 4 R 4′ ,

(f) —C 1-6 alkyl, wherein said alkyl is optionally substituted with one or more

(I) halogen,

(II) —OH, and

(III) —C 6-10 aryl,

(g) —NR 4 —SO 2 —R 4′ ,

(h) —SO 2 —R 4 ,

(i) —NR 4 —C(═O)—R 4′ ,

(j) —C(═O)—OR 4 ,

(k) —NR 4 R 4′ ,

(l) —C(═O)—R 4 , and

(m) —SO 2 —NR 4 R 4′ ,

and said R 1 aryl is optionally substituted with one or more

(a) halogen,

(b) —C 1-6 alkyl,

(c) —C 2-6 alkenyl,

(d) —C 2-6 alkynyl,

(e) —C 0-3 alkyl-C 6-10 aryl,

(f) cyano,

(g) —O—C 0-3 alkyl-C 6-10 aryl,

(h) —O—R 4 ,

(i) —C(═O)—NR 4 R 4′ ,

(j) —NR 4 R 4′ ,

(k) -Q 2 -R 7 , and

(l) —C 0-3 alkyl-C 5-12 heteroaryl,

Q 2 is selected from the group consisting of

(a) —C(═O)—,

(b) —C(═O)—O—,

(c) —C(═O)—NR 8 —,

(d) —NR 8 —C(═O)—,

(e) —S(═O) n —,

(f) —Si(R 8 R 9 )—,

(g) —S(═O) 2 —R 8 —,

(h) —R 8 —S(═O) 2 —,

(i) —O—C(═O)—,

(j) —NR 8 —C(═O)—O—,

(k) —SO 2 —NR 4 —,

(l) —NR 4 SO 2 —,

(m) —NR 4 —

wherein n is 0, 1 or 2;

R 2 is selected from the group consisting of

(4) —C 0-6 alkyl-C 6-10 aryl,

and said R 2 aryl is optionally substituted with one or more

(a) —OR 10 ,

(b) halogen,

(c) -cyano,

(d) —NO 2 ,

(e) -Q 4 -C 1-6 alkyl,

(f) —C 1-6 alkyl, wherein said alkyl is optionally substituted with one or more

(I) halogen, and

(II) cyano,

(g) —C 0-3 alkyl-C 6-10 aryl, wherein said aryl is optionally substituted with one or more

(I) halogen,

(II) —C 1-6 alkyl,

(III) —C 2-6 alkenyl,

(IV) —C 2-6 alkynyl,

(V) —O—C 1-6 alkyl,

(VI) —SO 2 —C 1-6 alkyl,

(VII) cyano,

(VIII) —C 3-8 cycloalkyl,

(IX) —NO 2 ,

(X) —SO 2 —NR 4 R 4′

(h) —SO 2 —C 1-6 alkyl,

(i) —SO 2 —NR 4 R 4′ ,

(j) —NR 4 R 4′ ,

(k) —C 3-8 cycloalkyl,

(l) —C 2-6 alkenyl,

(m) —NHC(═O)—C 1-6 alkyl, wherein said alkyl is optionally substituted with one or more

(I) —NR 4 R 4′

(II) OH

(III) —SO 2 R 4 , and

(IV) —NHSO 2 R 4 ,

(n) —NHC(═O)—C 0-3 alkyl-C 6-10 aryl, wherein said aryl is optionally substituted with one or more

(I) NR 4 R 4′ ,

(II) OH,

(III) —SO 2 R 4 , and

(IV) —NHSO 2 R 4 ,

(o) —C 0-3 alkyl-C 5-12 heteroaryl, wherein said heteroaryl is optionally substituted with one or more

(I) halogen,

(II) —C 1-6 alkyl, and

(III) ═O,

(p) —S(═O) m —C 0-6 alkyl-C 6-10 aryl,

(q) —CO 2 —R 4 ,

(r) —C(═O)—NR 4 R 4′ ,

(s) —C 0-6 alkyl—NR 4 SO 2 —R 4 ,

(t) —O—C 2-6 alkenyl,

and m is 0, 1 or 2;

and Q 4 is selected from the same group as Q 2 ;

R 3 is selected from the group consisting of

(2) —C 0-3 alkyl-C 6-10 aryl,

and said R 3 aryl is optionally substituted with one or more

(a) —OR 12 ,

(b) —NR 4 R 4′ ,

(c) halogen,

(d) cyano,

(f) —NO 2 ,

(g) -Q 6 -R 4 , and

(h) —C 1-6 alkyl, wherein said alkyl is optionally substituted with one or more

(I) halogen,

(II) cyano,

(III) —C 1-6 alkyl,

(IV) —O—C 1-6 alkyl,

(V) —C 3-8 cycloalkyl,

(VI) —C(═O)—C 1-6 alkyl,

(i) —C 2-6 alkenyl,

(j) —C 2-6 alkynyl,

(k) —C 0-3 alkyl-C 5-12 heteroaryl,

(l) —O—C 2-6 alkenyl,

(m) —C 0-3 alkyl-C 6-10 aryl, wherein said aryl moiety is optionally substituted with one or more

(I) —C 1-6 alkyl,

(II) —C 2-6 alkenyl,

(III) —C 2-6 alkynyl,

(IV) halogen,

(V) cyano,

(VI) —C 3-8 cycloalkyl, and

(VII) NO 2 ,

and R 12 is selected from the group consisting of

(I) hydrogen,

(II) —C 1-6 alkyl,

(III) —C 2-6 alkenyl,

(IV) —C 2-6 alkynyl,

(V) —C 3-8 cycloalkyl, and

(VI) —C 0-3 alkyl-C 6-10 aryl,

and said R 12 alkyl, alkenyl and alkynyl moiety is optionally substituted with one or more

(A) halogen,

(B) hydroxyl,

(C) cyano,

(D) —O—C 1-6 alkyl, wherein said alkyl is optionally substituted with one or more halogen,

(E) —NR 4 R 4′ ,

(F) —NR 4 —S(═O) 2 —R 4′ ,

(G) —NR 4 —C(═O)—R 4′ ,

(H) —NR 4 —C(═O)—OR 4′ ,

(I) —S(═O) 2 —NR 4 —,

and said R 10 cycloalkyl moiety is optionally substituted with one or more

(A) halogen,

(B) hydroxyl,

(C) -cyano,

(D) —O—Cl 1-6 alkyl, and

(E) —C 1-6 alkyl, wherein said alkyl is optionally substituted one or more halogen;

and said R 12 aryl moiety is optionally substituted with one or more

(A) halogen,

(B) cyano,

(C) —O—C 1-6 alkyl, and

(D) —C 1-6 alkyl, wherein said alkyl is optionally substituted one or more halogen;

Q 6 is selected from the same group as Q 2 ;

R 4 and R 4′ are selected from the group consisting of

(1) hydrogen,

(2) —C 1-8 alkyl, wherein said alkyl is optionally substituted with

(a) halogen,

(b) —C 3-8 cycloalkyl

(c) —CO 2 C 1-6 alkyl

(d) —OC 1-6 alkyl, wherein said alkyl is optionally substituted with one or more

(I) halogen, or

(II) cyano,

(3) —C 2-8 alkenyl, and

(4) —C 0-3 alkyl-C 6-10 aryl;

R 5 is selected from the group consisting of

(1) hydrogen,

(2) —C 1-6 alkyl,

(3) halogen, and

(4) —CO 2 —R 4 ,

R 6 , R 7 , R 8 , R 9 , R 10 and R 11 are independently selected from the group consisting of:

(1) hydrogen,

(2) —C 1-6 alkyl,

(3) —C 3-8 cycloalkyl,

(4) —C 0-3 alkyl-C 6-10 aryl,

wherein said alkyl is optionally substituted with one or more

(A) halogen,

(B) hydroxyl,

(C) cyano,

(D) —O—C 1-6 alkyl, wherein said alkyl is optionally substituted with one or more

halogen,

and said cycloalkyl and aryl are optionally substituted with one or more

(A) halogen,

(B) hydroxyl,

(C) cyano,

(D) —O—C 1-6 alkyl, and

(E) —C 1-6 alkyl, wherein said alkyl is optionally substituted one or more halogen;

provided that when X is N; Z is O; and R 2 is unsubstituted phenyl, then R 3 is not unsubstituted benzyl;

and pharmaceutically acceptable salts thereof, and individual enantiomers and diastereomers thereof.

2. The compound of claim 1 wherein R 1 is —C 0-3 alkyl-C 3-12 carbocyclic, wherein said alkyl or carbocyclic is substituted as in claim 1 .

3. The compound of claim 1 wherein R 1 is —C 0-3 alkyl-C 6-10 aryl, and said aryl moiety is optionally substituted with one or more

(a) halogen, or

(b) —C 1-6 alkyl.

4. The compound of claim 1 wherein R 2 is: —C 0-3 alkyl-C 6-10 aryl, wherein said aryl moiety is optionally substituted as in claim 1 .

5. The compound of claim 4 , wherein R 2 is phenyl or benzyl, and said phenyl or benzyl are optionally substituted as in claim 1 .

6. The compound of claim 1 which is a compound of formula (II)

or its tautomer (II′)

and pharmaceutically acceptable salts thereof, and individual enantiomers and diasteromers thereof, wherein X, X′, Z, R 1 and R 3 are as defined in claim 1 , and R 15 is selected from the group consisting of

(a) —OR 10 ,

(b) halogen,

(c) -cyano,

(d) -Q 4 -C 1-6 alkyl,

(e) —C 1-6 alkyl, wherein said alkyl is optionally substituted with one or more

(I) halogen, and

(II) cyano,

(f) —C 0-3 -alkyl-C 6-10 aryl, wherein said aryl is optionally substituted with one or more

(I) halogen,

(II) —C 1-6 alkyl,

(V) —O—C 1-6 alkyl,

(VI) —SO 2 —C 1-6 alkyl,

(VII) cyano,

(VIII) —C 3-8 cycloalkyl,

(X) —SO 2 —NR 4 R 4′

(g) —SO 2 —C 1-6 alkyl,

(h) —SO 2 —NR 4 R 4′ ,

(i) —C 3-8 cycloalkyl,

(j) —NHC(═O)—C 1-6 alkyl, wherein said alkyl is optionally substituted with one or more

(I) —NR 4 R 4′

(II) OH

(III) —SO 2 R 4 , and

(IV) —NHSO 2 R 4 ,

(k) —C 0-3 alkyl-C 5-12 heteroaryl, wherein said heteroaryl is optionally substituted with one or more

(I) halogen,

(II) —C 1-6 alkyl, and

(III) ═O,

(l) —S(═O) m —C 0-6 alkyl-C 6-10 aryl,

(m) —CO 2 —R 4 ,

(n) —C(═O)—NR 4 R 4′ ,

(o) —C 0-6 alkyl-NR 4 SO 2 —R 4 .

7. The compound of claim 6 wherein R 3 is selected from the group consisting of

(1) —C 0-3 alkyl-C 6-10 aryl,

and said aryl is optionally substituted with one or more

(a) —OR 12 ,

(b) —NR 4 R 4′ ,

(c) halogen,

(d) cyano,

(e) —NO 2 ,

(f) -Q 6 -R 4 , and

(g) —C 1-6 alkyl, wherein said alkyl is optionally substituted with one or more

(I) halogen,

(II) cyano,

(III) —C 1-6 alkyl,

(IV) —O—C 1-6 alkyl,

(V) —C 3-8 cycloalkyl,

(VI) —C(═O)—C 1-6 alkyl,

(h) —C 2-6 alkenyl,

(i) —C 2-6 alkynyl,

(j) —C 0-3 alkyl-C 5-12 heteroaryl,

(k) —C 0-3 alkyl-C 6-10 aryl, and said aryl moiety is optionally substituted with one or more

(I) —C 1-6 alkyl,

(II) —C 2-6 alkenyl,

(III) —C 2-6 alkynyl,

(IV) halogen,

(V) cyano,

(VI) —C 3-8 cycloalkyl, and

(VII) NO 2 .

8. The compound of claim 7 wherein R 3 is benzyl, which is optionally substituted with one or more

(a) —OR 12 ,

(b) NR 4 R 4′ ,

(c) halogen,

(d) cyano,

(f) —NO 2 ,

(g) -Q 6 -R 4 , and

(h) —C 1-6 alkyl, wherein said alkyl is optionally substituted with one or more

(I) halogen,

(II) cyano,

(III) —C 1-6 alkyl,

(IV) —O—C 1-6 alkyl,

(V) —C 3-8 cycloalkyl,

(VI) —C(═O) —C 1-6 alkyl,

(i) —C 2-6 alkenyl,

(j) —C 2-6 alkynyl,

(k) —C 0-3 alkyl-C 5-12 heteroaryl,

(l) —C 0-3 alkyl-C 6-10 aryl, and said aryl moiety is optionally substituted with one or more

(I) —C 1-6 alkyl,

(II) —C 2-6 alkenyl,

(III) —C 2-6 alkynyl,

(IV) halogen,

(V) cyano,

(VI) —C 3-8 cycloalkyl, and

(VII) NO 2 .

9. The compound of claim 1 which is a compound of formula (III)

or its tautomer (III')

and pharmaceutically acceptable salts thereof, and individual enantiomers and diastereomers thereof, wherein X, X′, Z, R 1 , and R 2 are as defined in claim 1 , and R 16 is selected from the group consisting of

(a) —OR 12 ,

(b) NR 4 R 4′ ,

(c) halogen,

(d) cyano,

(f) —NO 2 ,

(g) -Q 6 -R 4 , and

(h) —C 1-6 alkyl, wherein said alkyl is optionally substituted with one or more

(I) halogen,

(II) cyano,

(III) —C 1-6 alkyl,

(IV) —O—C 1-6 alkyl,

(V) —C 3-8 cycloalkyl,

(VI) —C(═O)—C 1-6 alkyl,

(i) —C 2-6 alkenyl,

(j) —C 2-6 alkynyl,

(k) —C 0-3 alkyl-C 5-12 heteroaryl,

(l) —C 0-3 alkyl-C 6-10 aryl, wherein said aryl moiety is optionally substituted with one or more

(I) —C 1-6 alkyl,

(II) —C 2-6 alkenyl,

(III) —C 2-6 alkynyl,

(IV) halogen,

(V) cyano,

(VI) —C 3-8 cycloalkyl, and

(VII) NO 2 .

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

11. A compound which is selected from the group consisting of:

8-benzyl-4-(benzylamino)-1-phenyl-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-methyl-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(3-methylbutyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(tert-butylamino)-1-phenyl-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(isopropylamino)-1-phenyl-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(3-pyridyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(butylamino)-1-phenyl-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(3,5-dimethylphenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(1-methylbutylamino)-1-phenyl-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(4-chlorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(4-methoxyphenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(4-methoxy-3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(3,4-difluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(3-trifluoromethylphenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(2-methylphenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(3-methoxyphenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(3,4-dichlorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(4-trifluoromethylphenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(3-chlorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(2-chlorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(2,4-dichlorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(3-cyanophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(2-trifluoromethyl-4-methoxyphenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(2-methyl-4-methoxyphenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(1,3-benzodioxo-5-yl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(4-acetylaminophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(3,5-difluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-((2-phenethyl)amino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(4-pentanoylaminophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(4-(4-dimethylamino)butanoylaminophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

N-{4-[8-benzyl-4-(cyclohexylamino)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-1-yl]phenyl}butanamide;

N-{4-[8-benzyl-4-(cyclohexylamino)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-1-yl]phenyl}-3-hydroxypropanamide;

ethyl N-[8-benzyl-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-4-yl]-beta-alaninate;

8-benzyl-4-(cyclohexylamino)-1-[3′-(methylsulfonyl)biphenyl-2-yl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(isopropylamino)-1-phenyl-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

N-{4-[8-benzyl-4-(cyclohexylamino)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-1-yl]-2-chlorophenyl}acetamide;

8-(3-Bromobenzyl)-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-{3-[(1-methylprop-2-enyl)oxy]benzyl}-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(3-isopropoxybenzyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-methyl-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-ene;

1-(3-fluorophenyl)-4-(methylamino)-8-[(2′-methylbiphenyl-3-yl)methyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-1-(3-fluorophenyl)-4-(methylamino)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

N-(4-{[1-(3-fluorophenyl)-4-(methylamino)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}phenyl)acetamide;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[(2′-vinyl-1,1′-biphenyl-3-yl)methyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(4-methylpyridin-3-yl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-benzyl-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-(2-trifluoromethoxybenzyl)-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-[2-(difluoromethoxy)benzyl]-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[2-(tert-butylthio)benzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[2-methylbenzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[2-nitrobenzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

N-(4-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}phenyl)acetamide;

8-[4-cyanobenzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[3-cyanobenzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[2-propoxybenzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[3-phenylpropyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[3-fluorobenzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[2-cyanobenzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(2-thienylmethyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(1-phenylethyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[(2-benzyl-1H-indol-7-yl)methyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[(2-benzyl-2,3-dihydro-1H-indol-7-yl)methyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(1H-pyrrol-2-ylmethyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(1H-indol-2-ylmethyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[(3-aminopyridin-4-yl)methyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(quinolin-6-ylmethyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(1,2,3,4-tetrahydroquinolin-6-ylmethyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(1H-indol-7-ylmethyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[(2-aminopyridin-3-yl)methyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(1H-indol-5-ylmethyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-(2,3-dihydro-1H-indol-5-ylmethyl)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-(2-aminobenzyl)-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-(2,3-dihydro-1H-indol-7-ylmethyl)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-(2,3-dihydro-1H-inden-2-yl)-1-(3-fluorophenyl)-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(3-phenylcyclohexyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(1-phenyl-2,3-dihydro-1H-inden-2-yl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(3-phenylcyclohexyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(4-methoxyphenoxy)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-{4-[(4-methoxybenzyl)oxy]benzyl}-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-(biphenyl-3-ylmethyl)-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[(2′-methylbiphenyl-3-yl)methyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-(3-chlorobenzyl)-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(3-methylbenzyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(trifluoromethyl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(3-vinylbenzyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

methyl 3-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}benzoate;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(3-hydroxybenzyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(3-methoxybenzyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-(3-ethoxybenzyl)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-[3-(cyclopentyloxy)benzyl]-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(1,1,2,2-tetrafluoroethoxy)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(3-phenoxybenzyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[3-(4-tert-butylphenoxy)benzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-[3-(3,5-dichlorophenoxy)benzyl]-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[3-(benzyloxy)benzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(3-nitrobenzyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

3-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}phenyl acetate;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(2-methyl-1H-imidazol-1-yl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-[3-(2-ethyl-1H-imidazol-1-yl)benzyl]-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

3′-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}biphenyl-2-carbonitrile;

4-(cyclohexylamino)-8-[(2′-ethylbiphenyl-3-yl)methyl]-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-{[2′-(methoxymethyl)biphenyl-3-yl]methyl}-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-{[2′-(trifluoromethyl)biphenyl-3-yl]methyl}-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[(2′-vinylbiphenyl-3-yl)methyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[(2′-methoxybiphenyl-3-yl)methyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

(3′-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}biphenyl-2-yl)acetonitrile;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(2-fluoropyridin-3-yl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(3-methylpyridin-4-yl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[(4′-methylbiphenyl-3-yl)methyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[(3′-methylbiphenyl-3-yl)methyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-{[6-(2-ethylphenyl)pyridin-2-yl]methyl}-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-[(2′-cyclopropylbiphenyl-3-yl)methyl]-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(5-methyl-2-furyl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[(2′-allylbiphenyl-3-yl)methyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-({2′-[(trimethylsilyl)ethynyl]biphenyl-3-yl}methyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(2-methylpyridin-3-yl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-[3-(3,5-dimethylisoxazol-4-yl)benzyl]-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-[(2′-ethynylbiphenyl-3-yl)methyl]-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[(2′-but-3-en-1-ylbiphenyl-3-yl)methyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[(2′-isopropylbiphenyl-3-yl)methyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(3-methylpyridin-2-yl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(1-methyl-1H-imidazol-2-yl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(4-methylpyridin-3-yl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(1-methyl-1H-imidazol-5-yl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(1-methyl-1H-imidazol-4-yl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(4-methyl-1-oxidopyridin-3-yl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-[(2′,4′-dimethoxy-6′-methylbiphenyl-3-yl)methyl]-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[2′-(2-methylprop-2-en-1-yl)biphenyl-3-yl]methyl-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[(2′-methyl-5′-nitrobiphenyl-3-yl)methyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-[(5′-fluoro-2′-methylbiphenyl-3-yl)methyl]-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[(5′-chloro-2′-methylbiphenyl-3-yl)methyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[(5′-amino-2′-methylbiphenyl-3-yl)methyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(3-hydroxybenzyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-(3-tert-butoxybenzyl)-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[3-(allyloxy)benzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[3-(but-3-enyloxy)benzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-(2,3-dihydro-1-benzofuran-7-ylmethyl)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[3-(allyloxy)benzyl]-4-(cyclohexylamino)-1-phenyl-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(prop-2-ynyloxy)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-[3-(cyclopropylmethoxy)benzyl]-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(3-propoxybenzyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-(3-sec-butoxybenzyl)-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(2-methoxy-1-methylethoxy)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(pentyloxy)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-[3-(1-ethylpropoxy)benzyl]-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(trifluoromethoxy)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(1H-pyrrol-1-yl)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

methyl 3-(3′-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}biphenyl-2-yl)propanoate;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-(2-furylmethyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

1-(3-fluorophenyl)-8-(3-isopropoxybenzyl)-4-(isopropylamino)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[(6-bromopyridin-3-yl)methyl]-4-(cyclohexylamino)-1-(3-fluorphenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-{[6-(Benzylamino)pyridin-3-yl]methyl}-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

tert-Butyl 5-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}pyridin-2-ylcarbamate;

8-[(6-aminopyridin-3-yl)methyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-ene;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-{[6-(isobutylamino)pyridin-3-yl]methyl}-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-{[6-(isopropylamino)pyridin-3-yl]methyl}-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-{[6-(butylamino)pyridin-3-yl]methyl}-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-({6-[(2-methoxyethyl)amino]pyridin-3-yl}methyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-({6-[(cyclopropylmethyl)amino]pyridin-3-yl}methyl)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-({6-[(3-phenylpropyl)amino]pyridin-3-yl}methyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-{[2-(methylamino)pyridin-3-yl]methyl}-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-{[2-(isopropylamino)pyridin-3-yl]methyl}-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-({2-[(2-methoxyethyl)amino]pyridin-3-yl}methyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-{[2-(isobutylamino)pyridin-3-yl]methyl}-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-({2-[(cyclopropylmethyl)amino]pyrid in-3-yl}methyl)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-({2-[(3-phenylpropyl)amino]pyridin-3-yl}methyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-{[2-(sec-butylamino)pyridin-3-yl]methyl}-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-({2-[(2,2-dimethylpropyl)amino]pyridin-3-yl}methyl)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-{[2-(ethylamino)pyridin-3-yl]methyl}-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-{[2-(cyclopropylamino)pyridin-3-yl]methyl}-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-({2-[(2,2-difluoroethyl)amino]pyridin-3-yl}methyl)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-8-{2-[(2,2-difluoroethyl)amino]benzyl}-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

tert-Butyl 2-(3-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}phenoxy)propylcarbamate;

8-[3-(2-amino-1-methylethoxy)benzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

N-[4-(3-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}phenoxy)butyl]methanesulfonamide;

tert-butyl 3-(3-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}phenoxy)butylcarbamate;

8-[3-(3-amino-1-methylpropoxy)benzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

tert-butyl 2-(3-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}phenoxy)butylcarbamate;

8-{3-[1-(aminomethyl)propoxy]benzyl}-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[3-(2-aminoethoxy)benzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[3-(aminomethyl)benzyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-(3-aminobenzyl)-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

N-(3-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}phenyl)acetamide;

N-(3-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}phenyl)methane sulfonamide;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-{3-[(2-methylpentyl)amino]benzyl}-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[3-(isopropylamino)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[2-(isopropylamino)benzyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

4-[(2-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}phenyl)amino]butanenitrile;

3-(3-{[4-(cyclohexylamino)-1-(3-fluorophenyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-8-yl]methyl}phenyl)-2-methylpropanenitrile;

4-(cyclohexylamino)-1-(3-fluorophenyl)-8-[(6-isopropoxypyridin-2-yl)methyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

8-[(6-sec-butoxypyridin-2-yl)methyl]-4-(cyclohexylamino)-1-(3-fluorophenyl)-1,3,8-triazaspiro[4.5]dec-3-en-2-one;

1-(3-Fluorophenyl)-4-isobutylamino-8-(3-isopropoxy-benzyl)-1,3,8-triaza-spiro[4.5]dec-3-en-2-one;

1-(3-Fluorophenyl)-8-(3-isopropoxy-benzyl)-4-(2-methyl-cyclohexylamino)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-(1,2-Dimethyl-propylamino)-1-(3-fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-(2-Fluoro-cyclohexylamino)-1-(3-fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cycloheptylamino-1-(3-fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-(Bicyclo[2.2.1]hept-2-ylamino)-1-(3-fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclopentylamino-1-(3-fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-4-(tetrahydro-pyran-4-ylamino)-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclobutylamino-1-(3-fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluoro-phenyl)-8-(3-isopropoxy-benzyl)-2-oxo-4-(2-pyridin-4-yl-ethylamino)-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-4-(3-hydroxy-cyclohexylamino)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-4-(1-hydroxymethyl-2-methyl-propylamino)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-8-(3-isopropoxy-benzyl)-4-(3-methyl-butylamino)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-(Cyclopropylmethyl-amino)-1-(3-fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-8-(3-isopropoxy-benzyl)-4-(1-methanesulfonyl-pyrrolidin-3-ylamino)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Benzylamino-1-(3-fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-(1-Acetyl-pyrrolidin-3-ylamino)-1-(3-fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-4-(3-phenyl-propylamino)-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-4-(3-hydroxy-cyclohexylamino)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-(2-Dimethylcarbamoyl-ethylamino)-1-(3-fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-(2-Fluoro-ethylamino)-1-(3-fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-4-[(furan-2-ylmethyl)-amino]-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-4-(2-thiophen-2-yl-ethylamino)-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-8-(3-isopropoxy-benzyl)-4-(2-methylsulfanyl-ethylamino)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-8-(3-isopropoxy-benzyl)-4-(2-morpholin-4-yl-ethylamino)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-4-[2-(1H-imidazol-4-yl)-ethylamino]-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-4-(1-hydroxymethyl-cyclopentylamino)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-8-(3-isopropoxy-benzyl)-4-(2-methanesulfonyl-ethylamino)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(3-Fluorophenyl)-8-(3-isopropoxy-benzyl)-2-oxo-4-phenylamino-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

2′-[4-Cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1,3,8-triaza-spiro[4.5]dec-3-en-1-yl]-4′-fluoro-biphenyl-4-sulfonic acid dimethylamide;

4-Cyclohexylamino-1-(3′-methoxy-biphenyl-2-yl)-8-(2′-methyl-biphenyl-3-ylmethyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(4′-Cyano-biphenyl-2-yl)-4-cyclohexylamino-8-(2′-methyl-biphenyl-3-ylmethyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(2-Cyano-phenyl)-4-cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(2-Bromo-5-fluorophenyl)-4-cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1-(2-phenylsulfanyl-phenyl)-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1-(3′-trifluoromethyl-biphenyl-2-yl)-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(2-Benzyl-phenyl)-4-cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(4′-Carboxy-biphenyl-2-yl)-4-cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1-(4′-trifluoromethoxy-biphenyl-2-yl)-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-1-[2-(1H-indol-5-yl)-phenyl]-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-[2-(5-Carboxy-thiophen-2-yl)-phenyl]-4-cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-8-(3-isopropoxy-benzyl)-1-(4′-methylcarbamoyl-biphenyl-2-yl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-8-(3-isopropoxy-benzyl)-1-[3′-(2-methyl-cyclopropylmethoxy)-biphenyl-2-yl]-1,3,8-triaza-spiro[4.5]dec-3-en-2-one;

1-(4′-Cyanomethyl-biphenyl-2-yl)-4-cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-1-(4′-dimethylsulfamoyl-biphenyl-2-yl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-8-(3-isopropoxy-benzyl)-1-(4′-isopropoxycarbonyl-biphenyl-2-yl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-1-(4′-ethanesulfonyl-4-fluoro-biphenyl-2-yl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(4′-Ethanesulfonyl-4-fluoro-biphenyl-2-yl)-8-(3-isopropoxy-benzyl)-4-isopropylamino-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-8-(3-isopropoxy-benzyl)-1-[4′-(methanesulfonylamino-methyl)-biphenyl-2-yl]-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-1-[5-fluoro-2-(1-methyl-1H-pyrazol-4-yl)-phenyl]-8-(3-isopropoxy-benzyl)-1,3,8-triaza-spiro[4.5]dec-3-en-2-one;

4-Cyclohexylamino-1-(5-fluoro-2-pyridin-3-yl-phenyl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-8-(3-isopropoxy-benzyl)-1-[2-(2-methanesulfonyl-acetylamino)-phenyl]-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-8-(3-isopropoxy-benzyl)-1-[4-methanesulfonyl-benzoylamino)-phenyl]-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(4′-Ethanesulfonyl-4-fluoro-biphenyl-2-yl)-8-(3-isopropoxy-benzyl)-2-oxo-4-(tetrahydro-pyran-4-ylamino)-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-1-(4-fluoro-4′-methylsulfamoyl-biphenyl-2-yl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclopropylamino-1-(4′-ethanesulfonyl-4-fluoro-biphenyl-2-yl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-1-[5-fluoro-2-(1-methanesulfonyl-1H-pyrazol-4-yl)-phenyl]-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

Ethanesulfonic acid {2′-[4-cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1,3,8-triaza-spiro[4.5]dec-3-en-1-yl]-4′-fluoro-biphenyl-4-yl}-amide;

4-Cyclohexylamino-1-[4-fluoro-4′-(pyrrolidine-1-sulfonyl)-biphenyl-2-yl]-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-(4′-Dimethylsulfamoyl-4-fluoro-biphenyl-2-yl)-8-(3-isopropoxy-benzyl)-4-isopropylamino-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-1-(5-fluoro-3′-trifluoromethanesulfonylamino-biphenyl-3-yl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-[3′-(Butane-2-sulfonylamino)-5-fluoro-biphenyl-3-yl]-4-cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

2′-[4-Cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1,3,8-triaza-spiro[4.5]dec-3-en-1-yl]-4′-fluoro-biphenyl-3-sulfonic acid methylamide;

4-Cyclohexylamino-1-[4′-(1,1-dioxo-1,6-isothiazolidin-2-yl)-4-fluoro-biphenyl-2-yl]-8-(3-isopropoxy-benzyl)-1,3,8-triaza-spiro[4.5]dec-3-en-2-one;

4-Cyclohexylamino-8-(3-isopropoxy-benzyl)-1-[3-(5-methyl-[1,2,4]oxadiazol-3-yl)-phenyl]-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-1-[3-(3,5-dimethyl-isoxazol-4-yl)-5-fluoro-phenyl]-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-[3-(5-Carboxy-thiophen-2-yl)-5-fluorophenyl]-4-cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclopentylamino-1-(4-fluoro-4′-methanesulfonyl-biphenyl-2-yl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-sec-Butylamino-1-(4-fluoro-4′-methanesulfonyl-biphenyl-2-yl)-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

1-[2-(4-Acetylamino-piperidin-1-yl)-5-fluorophenyl]-4-cyclohexylamino-8-(3-isopropoxy-benzyl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-8-cyclopropylmethyl-1-(4′-dimethylsulfamoyl-4-fluoro-biphenyl-2-yl)-2-oxo-1,3-diaza-8-azonia-spiro[4.5]dec-3-ene;

4-Cyclohexylamino-8-(3-isopropoxy-benzyl)-1-(2-pyrazol-1-yl-phenyl)-1,3,8-triaza-spiro[4.5]dec-3-en-2-one;

N-{3′-fluoro-5′-[8-isobutyl-4-(isopropylamino)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-1-yl]biphenyl-3-yl}-β-alaninamide[15-45]

2′-[4-(cyclohexylamino)-8-(cyclopropylmethyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-1-yl]-4′-fluoro-N,N-dimethylbiphenyl-4-sulfonamide[15-46]

4-(cyclohexylamino)-8-(3-isopropoxybenzyl)-1-[3-(5-methyl-1,2,4-oxadiazol-3-yl)phenyl]-1,3,8-triazaspiro[4.5]dec-3-en-2-one; and

N-(1-{2-[4-(cyclohexylamino)-8-(3-isopropoxybenzyl)-2-oxo-1,3,8-triazaspiro[4.5]dec-3-en-1-yl]-4-fluorophenyl}piperidin-4-yl)acetamide;

and pharmaceutically acceptable salts thereof.