Therapeutic agents useful for treating pain

Patent metadata

Field	Value
Publication number	US-9434721-B2
Application number	US-201314099738-A
Country	US
Kind code	B2
Filing date	Dec 6, 2013
Priority date	Dec 24, 2002
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

A compound of formula:

wherein Ar 1 , A, R 3 , x, and m are as disclosed herein and Ar 2 is a benzothiazolyl, benzooxazolyl, or benzoimidazolyl group or a pharmaceutically acceptable salt thereof (a “Benzoazolylpiperazine Compound”), compositions comprising a Benzoazolylpiperazine Compound, and methods for treating or preventing pain, UI, an ulcer, IBD, IBS, an addictive disorder, Parkinson's disease, parkinsonism, anxiety, epilepsy, stroke, a seizure, a pruritic condition, psychosis, a cognitive disorder, a memory deficit, restricted brain function, Huntington's chorea, amyotrophic lateral sclerosis, dementia, retinopathy, a muscle spasm, a migraine, vomiting, dyskinesia, or depression in an animal comprising administering to an animal in need thereof an effective amount of a Benzoazolylpiperazine Compound are disclosed.

First claim

What is claimed is:

1. A method for treating pain in an animal, comprising administering to an animal in need thereof an effective amount of a compound of formula:

or a pharmaceutically acceptable salt thereof, wherein:
Ar 1 is:

A is:

R 1 is —Cl, Br, —I, —(C 1 -C 6 )alkyl, —NO 2 , —CN, —OH, —OCH 3 , —NH 2 , —C(halo) 3 , —CH(halo) 2 , or —CH 2 (halo);
each R 2 is independently:
(a) -halo, —CN, —OH, —O(C 1 -C 6 )alkyl, —NO 2 , or —NH 2 ; or
(b) —(C 1 -C 10 )alkyl, —(C 2 -C 10 )alkenyl, —(C 2 -C 10 )alkynyl, —(C 3 -C 10 )cycloalkyl, —(C 8 -C 14 )bicycloalkyl, —(C 8 -C 14 )tricycloalkyl, —(C 5 -C 10 )cycloalkenyl, —(C 8 -C 14 )bicycloalkenyl, —(C 8 -C 14 )tricycloalkenyl, -(3- to 7-membered)heterocycle, or -(7- to 10-membered)bicycloheterocycle, each of which is unsubstituted or substituted with one or more R 5 groups; or
(c) -phenyl, -naphthyl, —(C 14 )aryl, or -(5- to 10-membered)heteroaryl, each of which is unsubstituted or substituted with one or more R 6 groups;

each R 3 is independently:
(a) -halo, —CN, —OH, —O(C 1 -C 6 )alkyl, —NO 2 , or —NH 2 ; or
(b) —(C 1 -C 10 )alkyl, —(C 2 -C 10 )alkenyl, —(C 2 -C 10 )alkynyl, —(C 3 -C 10 )cycloalkyl, —(C 8 -C 14 )bicycloalkyl, —(C 8 -C 14 )tricycloalkyl, —(C 5 -C 10 )cycloalkenyl, —(C 8 -C 14 )bicycloalkenyl, —(C 8 -C 14 )tricycloalkenyl, -(3- to 7-membered)heterocycle, or -(7- to 10-membered)bicycloheterocycle, each of which is unsubstituted or substituted with one or more R 5 groups; or
(c) -phenyl, -naphthyl, —(C 14 )aryl, or -(5- to 10-membered)heteroaryl, each of which is unsubstituted or substituted with one or more R 6 groups;

R 4 is —H or —(C 1 -C 6 )alkyl;
each R 5 is independently —CN, —OH, -halo, —N 3 , —NO 2 , —N(R 7 ) 2 , —CH═NR 7 , —NR 7 OH, —OR 7 , —C(O)R 7 , —C(O)OR 7 , —OC(O)R 7 , —OC(O)OR 7 , —SR 7 , —S(O)R 7 , or —S(O) 2 R 7 ;
each R 6 is independently —(C 1 -C 6 )alkyl, —(C 2 -C 6 )alkenyl, —(C 2 -C 6 )alkynyl, —(C 3 -C 8 )cycloalkyl, —(C 5 -C 8 )cycloalkenyl, -phenyl, —(C 3 -C 5 )heterocycle, —C(halo) 3 , —CH(halo) 2 , —CH 2 (halo), —CN, —OH, -halo, —N 3 , —NO 2 , —N(R 7 ) 2 , —CH═NR 7 , —NR 7 OH, —OR 7 , —C(O)R 7 , —C(O)OR 7 , —OC(O)R 7 , —OC(O)OR 7 , —SR 7 , —S(O)R 7 , or —S(O) 2 R 7 ;
each R 7 is independently —H, —(C 1 -C 6 )alkyl, —(C 2 -C 6 )alkenyl, —(C 2 -C 6 )alkynyl, —(C 3 -C 8 )cycloalkyl, —(C 5 -C 8 )cycloalkenyl, -phenyl, —(C 3 -C 5 )heterocycle, —C(halo) 3 , —CH 2 (halo), or —CH(halo) 2 ;
R 8 and R 9 are each independently —H, —(C 1 -C 6 )alkyl, —(C 2 -C 6 )alkenyl, —(C 2 -C 6 )alkynyl, —(C 3 -C 8 )cycloalkyl, —(C 5 -C 8 )cycloalkenyl, -phenyl, —C(halo) 3 , —CH(halo) 2 , —CH 2 (halo), —CN, —OH, -halo, —N 3 , —N(R 7 ) 2 , —CH═NR 7 , —NR 7 OH, —OR 7 , —C(O)R D , —C(O)OR 7 , —OC(O)R 7 , —OC(O)OR 7 , —SR 7 , —S(O)R 7 , or —S(O) 2 R 7 ;
each -halo is —F, —Cl, —Br, or —I;
n is an integer ranging from 0 to 3;
m is 0 or 1; and
x is 1.

2. The method of claim 1 , wherein A is —C(O)N(R 4 )—.

3. The method of claim 1 , wherein A is —C(S)N(R 4 )—.

4. The method of claim 2 , wherein n is 0 or 1.

5. The method of claim 4 , wherein n is 1 and R 2 is —(C 1 -C 10 )alkyl, —(C 2 -C 10 )alkenyl, —(C 2 -C 10 )alkynyl, —(C 3 -C 10 )cycloalkyl, —(C 8 -C 14 )bicycloalkyl, —(C 8 -C 14 )tricycloalkyl, —(C 5 -C 10 )cycloalkenyl, —(C 8 -C 14 )bicycloalkenyl, —(C 8 -C 14 )tricycloalkenyl, -(3- to 7-membered)heterocycle, or -(7- to 10-membered)bicycloheterocycle, each of which is unsubstituted or substituted with one or more R 5 groups.

6. The method of claim 5 , wherein R 2 is —(C 1 -C 10 )alkyl substituted with two R 5 groups.

7. The method of claim 1 , wherein R 3 is attached to a carbon atom adjacent to a nitrogen atom attached to the -(A) x - group.

8. The method of claim 7 , wherein R 3 is —CH 3 .

9. The method of claim 1 , wherein:
R 1 is —CH 3 , —CF 3 , —Cl, —Br, or —I;
m is 0;
n is 0;
A is —C(O)N(R 4 )—;
R 4 is —H;
R 8 is —H; and
R 9 is —CH 3 , —CF 3 , —OCH 2 CH 3 , tert-butyl, —Cl, —Br, or —F.

10. The method of claim 9 , wherein R 1 is —CH 3 or —Cl and R 9 is —Cl, —Br, or —F.

11. The method of claim 1 , wherein:
R 1 is —CH 3 , —CF 3 , —Cl, —Br, or —I;
m is 1;
R 3 is —(C 1 -C 10 )alkyl;
n is 0;
A is —C(O)N(R 4 )—;
R 4 is —H;
R 8 is —H; and
R 9 is —CH 3 , —CF 3 , —OCH 2 CH 3 , tert-butyl, —Cl, —Br, or —F.

12. The method of claim 11 , wherein R 3 is —CH 3 .

13. The method of claim 12 , wherein R 1 is —CH 3 or —Cl and R 9 is —Cl, —Br, or —F.

14. The method of claim 1 , wherein:
R 1 is —CH 3 , —CF 3 , —Cl, —Br, or —I;
m is 0;
n is 0;
A is —C(O)N(R 4 )—;
R 4 is —H;
R 8 is —CH 3 , —CF 3 , —OCH 2 CH 3 , tert-butyl, —Cl, —Br, or —F; and
R 9 is —H.

15. The method of claim 14 , wherein R 1 is —CH 3 or —Cl and R 8 is —Cl, —Br, or —F.

16. The method of claim 1 , wherein:
R 1 is —CH 3 , —CF 3 , —Cl, —Br, or —I;
m is 1;
R 3 is —(C 1 -C 10 )alkyl;
n is 0;
A is —C(O)N(R 4 )—;
R 4 is —H;
R 8 is —CH 3 , —CF 3 , —OCH 2 CH 3 , tert-butyl, —Cl, —Br, or —F; and
R 9 is —H.

17. The method of claim 16 , wherein R 3 is —CH 3 .

18. The method of claim 17 , wherein R 1 is —CH 3 or —Cl and R 8 is —Cl, —Br, or —F.

19. A method for treating pain in an animal, comprising administering to an animal in need thereof an effective amount of a compound of formula:

or a pharmaceutically acceptable salt thereof, wherein:
Ar 1 is:

A is:

R 1 is —H, -halo, —(C 1 -C 6 )alkyl, —NO 2 , —CN, —OH, —OCH 3 , —NH 2 , —C(halo) 3 , —CH(halo) 2 , or —CH 2 (halo);
each R 2 , when present, is independently:
(a) -halo, —CN, —OH, —O(C 1 -C 6 )alkyl, —NO 2 , or —NH 2 ; or
(b) —(C 1 -C 10 )alkyl, —(C 2 -C 10 )alkenyl, —(C 2 -C 10 )alkynyl, —(C 3 -C 10 )cycloalkyl, —(C 8 -C 14 )bicycloalkyl, —(C 8 -C 14 )tricycloalkyl, —(C 5 -C 10 )cycloalkenyl, —(C 8 -C 14 )bicycloalkenyl, C 14 )tricycloalkenyl, -(3- to 7-membered)heterocycle, or -(7- to 10-membered)bicycloheterocycle, each of which is unsubstituted or substituted with one or more R 5 groups; or
(c) -phenyl, -naphthyl, —(C 14 )aryl, or -(5- to 10-membered)heteroaryl, each of which is unsubstituted or substituted with one or more R 6 groups;

each R 3 is independently:
(a) -halo, —CN, —OH, —O(C 1 -C 6 )alkyl, —NO 2 , or —NH 2 ; or
(b) —(C 1 -C 10 )alkyl, —(C 2 -C 10 )alkenyl, —(C 2 -C 10 )alkynyl, —(C 3 -C 10 )cycloalkyl, —(C 8 -C 14 )bicycloalkyl, —(C 8 -C 14 )tricycloalkyl, —(C 5 -C 10 )cycloalkenyl, —(C 8 -C 14 )bicycloalkenyl, —(C 8 -C 14 )tricycloalkenyl, -(3- to 7-membered)heterocycle, or -(7- to 10-membered)bicycloheterocycle, each of which is unsubstituted or substituted with one or more R 5 groups; or
(c) -phenyl, -naphthyl, —(C 14 )aryl, or -(5- to 10-membered)heteroaryl, each of which is unsubstituted or substituted with one or more R 6 groups;

R 4 is —H or —

Assignees

• Purdue Pharma Lp

Inventors

• Sun Qun
• Tafesse Laykea
• Victory Sam

Classifications

• A61P7/12

  Antidiuretics, e.g. drugs for diabetes insipidus (ADH A61P5/10) · CPC title

• A61P43/00

  Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00 · CPC title

• A61P9/10

  for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis · CPC title

• A61P25/22

  Anxiolytics · CPC title

• A61P25/06

  Antimigraine agents · CPC title