Imidazo 1,5-a!quinolines for treatment of anxiety and sleep disorders

Abstract

The present invention is to imidazo 1,5-a!quinolines (I) which are useful pharmaceutical agents for the treatment of anxiety, sleep disorders, panic states, convulsions and muscle disorders.

We claim: 
     
       1. Imidazo 1,5-a!quinolines of formula (I) where   (I) R 3  is (A) --CO--OR 3-1  where R 3-1  is (1) --H,   (2) C 1  -C 6  alkyl,   (3) C 3  -C 7  cycloalkyl,   (4) --(C 1  -C 6  alkyl)--C 3  -C 7  cycloalkyl,   (5) --(CH 2 ) n  --CF 3  where n is 0 thru 4,   (6) --(CH 2 ) n  --CHF 2  where n is defined above,   (7) --(CH 2 ) n  --CH 2  F where n is defined above,   (8) --φ optionally substituted with one or two (a) --F,   (b) --Cl,   (c) --Br,   (d) --I,   (e) C 1  -C 4  alkyl,   (f) --NR 3-2  R 3-3  where R 3-2  and R 3-3  are the same or different and are selected from the group consisting of   (i) --H,   (ii) C 1  -C 6  alkyl,   (iii) C 3  -C 7  cycloalkyl,   (iv) --(C 1-C4  alkyl)--C 3  -C 7  cycloalkyl, and where R 3-2  and R 3-3  are taken together with the attached nitrogen atom to form a heterocyclic moiety selected from the group consisting of pyrrolidinyl, morpholinyl, piperazinyl and piperidinyl,       (B) --CO--R 3-5  where R 3-5  is (1) --H,   (2) C 1  -C 6  alkyl,   (3) --φ optionally substituted with one or two (a) --F,   (b) --Cl,   (c) --Br,   (d) --I,   (e) C 1  -C 4  alkyl,   (f) --NR 3-2  R 3-3  where R 3-2  and R 3-3  are defined above,       (C) aryl where aryl is (1) phenyl ##STR14##  where w is 1 or 2 and where R 3-6  is (a) --H, (b) --F,   (c) --Cl,   (d) --Br,   (e) --I,   (f) --CN,   (g) --NO 2 ,   (h) --O--CO--R 3-1  where R 3-1  is defined above,   (i) --(CH 2 ) n  --CF 3  where n is defined above,   (j) C 1  -C 6  alkyl,   (k) C 3  -C 7  cycloalkyl,   (I) --(C 1  -C 4  alkyl)--C 3  -C 7  cycloalkyl,   (m) --NR 3-2  R 3-3  where R 3-2  and R 3-3  are defined above,   (n) --(CH 2 ) n  --O--R 3-1  where R 3-1  and n are defined above,   (o) --(CH 2 ) n  --S--R 3-1  where R 3-1  and n are defined above,   (P) --(CH 2 ) n  --CO--O--R 3-1  where R 3-1  and n are defined above,   (q) --N 3-1  --CO--R 3-1  where the R 3-1  's are the same or different and are defined above,   (r) --SO 2  --NR 3-2  R 3-3  where R 3-2  and R 3-3  are defined above,   (s) --CO--R 3-5  where R 3-5  is defined above,   (t) --NH--SO 2  --CH 3 ,         (u) --CO--N(R 3-4 ) 2  where the R 3-4  may be the same or different and are --H or C 1  -C 3 ) alkyl, (2) 5-substituted-1,2,4-oxadiazol-3-yl ##STR15##  where R 3-6  is defined above, (3) 3-substituted-1,2,4-oxadiazol-5-yl ##STR16##  where R 3-6  is as defined above, (4) 4- or 5-substituted isoxazol-3-yl ##STR17##  where w and R 3-6  are defined above, (5) 3- or 4-substituted isoxazol-5-yl ##STR18##  where w and R 3-6  are defined above; (II) R 4  is   (A) --H,   (B) C 1  -C 4  alkyl,   (C) --CF 3  ;     (III) R 5  is (A) C 1  -C 6  alkyl,   (B) --φ optionally substituted with 1 or 2 (1) --F,   (2) --Cl,   (3) --Br,   (4) --I,   (5) --CN,   (6) --NO 2 ,   (7) --O--CO--R 5-1  where R 5-1  is (a) --H,   (b) C 1  -C 6  alkyl,   (c) C 3  -C 7  cycloalkyl,   (d) --(C 1  -C 6  alkyl)--C 3  -C 7  cycloalkyl,   (e) --(CH 2 ) b  --CF 3  where b is 0 thru 4,   (f) --(CH 2 ) b  --CHF 2  where b is defined above,   (g) --(CH 2 ) b  --CH 2  F where b is defined above,     (8) --(CH 2 ) b  --CF 3  where b is defined above,   (9) C 1  -C 6  alkyl,   (10) C 3  -C 7  cycloalky,   (11) --(C 1  -C 4  alkyl)--C 3  -C 7  cycloalkyl,   (12) --NR 5-2  where R 5-2  and R 5-3  are the same or different and are defined above,   (13) --(CH 2 ) b  --O--R 5-1  where R 5-1  and b are defined above,   (14) --(CH 2 ) b  --S--R 5-1  where R 5-1  and b are defined above,   (15) --(CH 2 ) b--CO--O--R5-1  where R 5-1  and b are defined above,   (16) --NR 5-1  13 CO--R 5-1  where the R 5-1  's are the same or different and are defined above,   (16) --SO 2  --NR 5-2  R 5-3  where R 5-2  and R 5-3  are defined above,   (18) --CO--R 5-4  where R 5-4  is (a) --H,   (b) C 1  -C 6  alkyl,   (c) --N(R 5-1 ) 2  where the R 5-1  s are the same or different and are as defined above,       (C) --O--R 5-5  where R 5-5  is (1) --H,   (2) C 1  -C 6  alkyl,   (3) C 3  -C 7  cycloalkyl,   (4) --(C 1  -C 6  alkyl)--C 3  -C 7  cycloalkyl,   (5) --(CH 2 ) b  --CF 3  where b is defined above,   (6) --(CH 2 ) b  --CHF 2  where b is defined above,   (7) --(CH 2 ) b  --CH 2  F where b is defined above,   (8) --φ optionally substituted with one or two (a) --F,   (b) --Cl,   (c) --Br,   (d) --I,   (c) C 1  -C 4  alkyl,   (f) --NR 5-2  R 5-3  where R 5-2  and R 5-3  are defined above,       (D) --NR 5-6  R 5-7  where R 5-6  and R 5-7  are the same or different and are selected from the group consisting of (1) --H,   (2) C 1  -C 6  alkyl,   (3) C 3  -C 7  cycloalkyl,   (4) --(C 1  -C 4  alkyl)--C 3  -C 7  cycloalkyl and where R 5-6  and R 5-7  are taken together with the attached nitrogen atom to form a heterocyclic moiety selected from the group consisting of   (a) ##STR19##  where m is 1 thru 4, p is 0 thru 4 and R 5-8  is selected from the group consisting of (i) --H,   (ii) C 1  -C 6  alkyl,   (iii) C 3  -C 7  cycloalkyl,   (iv) --(C 1  -C 6  alkyl)--C 3  -C 7  cycloalkyl,   (v) --(CH 2 ) b  --CF 3  where b is defined above,   (vi) --(CH 2 ) b  --CHF 2  where b is defined above,   (vii) --(CH 2 ) b  --CH 2  F where b is defined above,   (viii) --φ optionally substituted with 1 or 2   (I) --F,   (II) --Cl,   (III) --Br,   (Iv) --I,   (v) C 1  -C 4  alkyl,   (VI) --NH 2 ,   (VII) --CO--NH 2 ,   (VIII) --SO 2  --NH 2 ,   (IX) --NH--SO 2  --CH 3 ,     (b) ##STR20##  where m and R 5-8  are defined above, (c) ##STR21##  where q is 1 or 2, where p and R 5-8  are defined above and where R 5-9  is     (A) --H,   (B) C 1  -C 6  alkyl,   (C) C 3  -C 7  cycloalkyl,   (D) --(C 1  -C 6  alkyl)--C 3  -C 7  cycloalkyl,   (E) --(CH 2 ) b  --CF 3  where b is defined above,   (F) --(CH 2 ) b  --CHF 2  where b is defined above,   (G) --(CH 2 ) b  --CH 2  F where b is defined above,   (H) --φ optionally substituted with one or two (1) --F,   (2) --Cl,   (3) --Br,   (4) --I,   (5) C 1  -C 4  alkyl,   (6) --NH 2 ,   (d) ##STR22##  where m, q, R 5-8  and R 5-9  are defined above, (e) ##STR23##  where R 5-8  and R 5-9  are defined above, (f) ##STR24##  where m, R 5-8  and R 5-9  are defined above, (IV) R 6  is     (A) --H,   (B) --F,   (C) --Br,   (D) --I,   (E) C 1  -C 4  alkyl,   (F) --CN,   (G) --NO 2 ,   (H) --(CH 2 ) g  --CF 3  where g is 0 thru 4,   (I) --(CH 2 ) g  --OR 6-1  where R 6-1  is (1) --H,   (2) C 1  -C 6  alkyl,   (3) --φ optionally substituted with one or two (a) --F,   (b) --Cl,   (c) --Br,   (d) --I,   (e) C 1  -C 4  alkyl,   (f) --NR 6-2  R 6-3  where R 6-2  and R 6-3  are the same or different and are selected from the group consisting of   (i) --H,   (ii) C 1  -C 6  alkyl,   (iii) C 3  -C 7  cycloalkyl,   (iv) --(C 1  -C 4  alkyl)--C 3  -C 7  cycloalkyl, and where R 6-2  and R 6-3  are taken together with the attached nitrogen atom to form a heterocyclic moiety selected from the group consisting of pyrrolidinyl, morpholinyl, piperazinyl, piperdinyl,       (J) --CO--O--R 6-4  where R 6-4  is (1) --H,   (2) C 1  -C 6  alkyl,   (3) C 3  -C 7  cycloalkyl,   (4) --(C 1  -C 6  alkyl)--C 3  -C 7  cycloalkyl,   (5) --(CH 2 ) g  --CF 3  where g is defined above,   (6) --(CH 2 ) g  --CHF 2  where g is defined above,   (7) --(CH 2 ) g  --CH 2  F where g is defined above,   (8) --φ optionally substituted with one or two (a) --F,   (b) --Cl,   (c) --Br,   (d) --I,   (e) C 1  -C 4  alkyl,   (f) --NR 6-2  R 6-3  where R 6-2  and R 6-3  are as defined above,       (K) --CO--NR 6-2  R 6-3  where R 6-2  and R 6-3  are as defined above,   (L) --(CH 2 ) g  --NR 6-2  R 6-3  where g, R 6-2  and R 6-3  are defined above,   (M) --NH--CO--R 6-4  where R 6-4  is defined above,   (N) --SO 2  --NR 6-2  R 6-3  where R 6-2  and R 6-3  are defined above,   (O) --N 3  ;     (V) R 7  is (A) --H,   (B) --F,   .Iadd.(α) --Cl,.Iaddend.   (C) --Br,   (D) --I,   (E) C 1  -C 4  alkyl,   (F) --CN,   (G) --NO 2 ,   (H) --(CH 2 ) g  --CF 3  where g is 0 thru 4,   (l) --(CH 2 ) g  --OR 7-1  where R 7-1  is (1) --H,   (2) C 1  -C 6  alkyl,   (3) --φ optionally substituted with one or two (a) --F,   (b) --Cl,   (c) --Br,   (d) --I,   (e) C 1  -C 4  alkyl,   (f) --NR 7-2  R 7-3  where R 7-2  and R 7-3  are the same or different and are selected from the group consisting of   (i) --H,   (ii) C 1  -C 6  alkyl,   (iii) C 3  -C 7  cycloalkyl,   (iv) --(C 1  -C 4  alkyl)--C 3  -C 7  cycloalkyl, and where R 6-2  and R 7-3  are taken together with the attached nitrogen atom to form a heterocyclic moiety selected from the group consisting of pyrrolidinyl, morpholinyl, piperazinyl, piperdinyl,       (J) --CO--O--R 7-4  where R 7-4  is (1) --H,   (2) C 1  -C 6  alkyl,   (3) C 3  -C 7  cycloalkyl,   (4) --(C 1  -C 6  alkyl)--C 3  -C 7  cycloalkyl,   (5) --(CH 2 ) g  --CF 3  where g is defined above,   (6) --(CH 2 ) g  --CHF 2  where g is defined above,   (7) --(CH 2 ) g  --CH 2  F where g is defined above,   (8) --φ optionally substituted with one or two (a) --F,   (b) --Cl,   (c) --Br,   (d) --I,   (e) C 1  -C 4  alkyl,   (f) --NR 7-2  R 7-3  where R 7-2  and R 7-3  are as defined above,       (K) --CO--NR 7-2  R 7-3  where R 7-2  and R 7-3  are as defined above,   (L) --(CH 2 ) g  --NR 7-2  R 7-3  where g, R 7-2  and R 7-3  are defined above,   (M) --NH--CO--R 7-4  where R 7-4  is defined above,   (N) --SO 2  --NR 7-3  where R 7-2  and R 7-3  are defined above,   (O) --N 3  ; and pharmaceutically acceptable salts thereof.     
     
     
       2. Imidazo 1,5-a!quinolines (I) according to claim 1 where R 3  is (1) 5-substituted-1,2,4-oxadiazol-3-yl ##STR25## (2) --CO--OR 3-1 . 
     
     
       3. Imidazo 1,5-a!quinolines (I) according to claim 2 where R 3-6  is C 3  cycloalkyl. 
     
     
       4. Imidazo 1,5-a!quinolines (I) according to claim 2 where R 3-1  is C 1  -C 6  alkyl and where R 3-6  is C 3  -C 7  cycloalkyl. 
     
     
       5. Imidazo 1,5-a!quinolines (I) according to claim 1 where R 4  is --H and C 1  alkyl. 
     
     
       6. Imidazo 1,5-a!quinolines (I) according to claim 5 where R 4  is --H. 
     
     
       7. Imidazo ,1,5-a!quinolines (I) according to claim 1 where R 5  is --NR 5-6  R 5-7 . 
     
     
       8. Imidazo 1,5-a!quinolines (I) according to claim 7 where R 5-6  and R 5-7  are cyclized to form a heterocyclic moiety selected from the group consisting of (a) ##STR26##   
     
     
       9. Imidazo 1,5-a!quinolines (I) according to claim 8 where q is 1, R 5-8  is --H or C 1  alkyl and where R 5-9  is --H or C 1  alkyl. 
     
     
       10. Imidazo 1,5-a!quinolines (I) according to claim 1 where R 6  is --H and --F. 
     
     
       11. Imidazo 1,5-a!quinolines (I) according to claim 10 where R 6  is --H. 
     
     
       12. Imidazo 1,5-a!quinolines (I) according to claim 1 where R 7  is --H, --F, --Cl --CF 3  and C 1  -C 4  alkyl. 
     
     
       13. Imidazo 1,5-a!quinolines (I) according to claim 12 where R 7  is --H and --Cl. 
     
     
       14. Imidazo 1,5-a!quinolines (I) according to claim 1 which are selected from the group consisting of pyrrolidino 3-(5-cyclopropyl-1,2,4-oxadiazol-3-yl)imidazo 1,5-a!quinoline-5-carboxamide,   dimethylamino 3-(5-cyclopropyl-1,2,4-oxadiazol-3-yl)imidazo 1,5-a!quinoline-5-carboxamide,   tert-butyl 4- (pyrrolidino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate,   pyrrolidino 3- 5-(1-methylethyl)-1,2,4-oxadiazol-3-yl!imidazo 1,5-a!quinoline-5-carboxamide,   pyrrolidino 3- 5-(1,1-dimethylethyl)-1,2,4-oxadiazol-3-yl!imidazo  1,5-a!quinoline-5-carboxamide,   pyrrolidino 3-phenylimidazo 1,5-a!quinoline-5-carboxamide,   morpholino 3-(5-cyclopropyl-1,2,4-oxadiazol-3-yl)imidazo 1,5-a!quinoline-5-carboxamide,   tert-butyl 4-methyl-5- (pyrrolidino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate,   pyrrolidino 4-methyl-3- 5-(1-methylethyl)-1,2,4-oxadiazol-3-yl!imidazo 1,5-a!quinoline-5-carboxamide,   dimethylamino 3-(5-cyclopropyl-1,2,4-oxadiazol-3-yl)-4-methylimidazo 1,5-a!quinoline- 5-carboxamide,   pyrrolidino 3-(5-cyclopropyl-1,2,4-oxadiazol-3-yl)-4-methylimidazo 1,5-a!quinoline-5carboxamide,   tert-butyl 5- (cis-3,5-dimethylpiperazino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate,   tert-butyl 7-fluoro-5- (3,5-dimethylpiperazino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate,   tert-butyl 7-chloro-5- (cis-3,5-dimethylpiperazino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate,   tert-butyl 7-chloro-5- (3,3,5,5-tetramethylpiperazino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate   tert-butyl 7-chloro-5- (piperazino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate,   tert-butyl 7-chloro-5- (4-cyclopropylpiperazino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate,   tert-butyl 7-chloro-5- ((3R)-methylpiperazino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate,   tert-butyl 7-chloro-5- ((3S)-methylpiperazino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate,   tert-butyl 7-chloro-5- (trans-(3S),(5S)-dimethylpiperazino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate,   tert-butyl 7-chloro-5- (trans-(3R),(5R)-dimethylpiperazino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate,   tert-butyl 7-methyl-5- (cis-3,5-dimethylpiperazino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate,   tert-butyl 4-methyl-5- (cis-3,5-dimethylpiperazino)carbonyl!imidazo 1,5-a!quinoline-3-carboxylate,   tert-butyl 7-fluoro-4-methyl-5- (cis-3,5-dimethylpiperazino)carbonyl!imidazo 1,5a!quinoline-3-carboxylate,   tert-butyl 7-chloro-4-methyl-5- (cis-3,5-dimethylpiperazino)carbonyl!imidazo 1,5a!quinoline-3-carboxylate,   pyrrolidino 3-(5-cyclopropyl-1,2,4-oxadiazol-3-yl)-7-chloroimidazo 1,5-a!quinoline-5carboxamide,   tert-butyl 7-chloro-5- ((3R),5,5-trimethylpiperazino)carbonyl!imidazo 1,5-a!quinoline-3carboxylate,   tert-butyl 7-chloro-5- ((3S),5,5-trimethylpiperazino)carbonyl!imidazo 1,5-a!quinoline-3carboxylate.   
     
     
       15. An imidazo 1,5-a!quinoline (I) according to claim 14 which is tert-butyl 7-chloro-5- (cis-3,5-dimethylpiperazino)carbonyl!imidazo 1,5a!quinoline-3-carboxylate.