Substituted spiro[piperidine-4,1'-pyrrolo[1,2-a]pyrazine]s as modulators of ion channels

• US 9,511,067 B2
• Filed: 12/22/2014
• Issued: 12/06/2016
• Est. Priority Date: 02/02/2011
• Status: Active Grant

• Current Assignee: Vertex Pharmaceuticals Incorporated
• Original Assignee: Vertex Pharmaceuticals Incorporated
• Inventors: Hadida Ruah, Sara Sabina, Kallel, Edward Adam, Miller, Mark Thomas, Arumugam, Vijayalaksmi, McCartney, Jason, Anderson, Corey, Grootenhuis, Peter Diederik Jan, Jiang, Licong
• Primary Examiner(s): Willis, Douglas M
• Application Number:
  US14/578,628
• Publication Number:
  US 20150174127A1
• Time in Patent Office: 715 Days
• Field of Search: 514/250, 544/336
• US Class Current: 1/1
• CPC Class Codes: A61K 31/499 Spiro-condensed pyrazines or piperazines
• CPC Class Codes: A61K 31/506 not condensed and containing further heterocyclic rings
• CPC Class Codes: A61P 1/00 Drugs for disorders of the alimentary tract or the digestive system
• CPC Class Codes: A61P 1/02 Stomatological preparations, e.g. drugs for caries, aphtae, periodontitis
• CPC Class Codes: A61P 1/04 for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
• CPC Class Codes: A61P 1/18 for pancreatic disorders, e.g. pancreatic enzymes
• CPC Class Codes: A61P 11/02 Nasal agents, e.g. decongestants
• CPC Class Codes: A61P 13/00 Drugs for disorders of the urinary system
• CPC Class Codes: A61P 13/08 of the prostate
• CPC Class Codes: A61P 13/10 of the bladder
• CPC Class Codes: A61P 15/00 Drugs for genital or sexual disorders for disorders of sex hormones A61P5/24; Contraceptives
• CPC Class Codes: A61P 17/02 for treating wounds, ulcers, burns, scars, keloids, or the like
• CPC Class Codes: A61P 17/04 Antipruritics
• CPC Class Codes: A61P 19/02 for joint disorders, e.g. arthritis, arthrosis
• CPC Class Codes: A61P 21/00 Drugs for disorders of the muscular or neuromuscular system
• CPC Class Codes: A61P 21/02 Muscle relaxants, e.g. for tetanus or cramps
• CPC Class Codes: A61P 25/00 Drugs for disorders of the nervous system
• CPC Class Codes: A61P 25/02 for peripheral neuropathies
• CPC Class Codes: A61P 25/04 Centrally acting analgesics, e.g. opioids
• CPC Class Codes: A61P 25/06 Antimigraine agents
• CPC Class Codes: A61P 25/08 : Antiepileptics; Anticonvulsants
• CPC Class Codes: A61P 25/14 : for treating abnormal movements, e.g. chorea, dyskinesia
• CPC Class Codes: A61P 25/18 : Antipsychotics, i.e. neuroleptics; Drugs for mania or schizophrenia
• CPC Class Codes: A61P 25/22 : Anxiolytics
• CPC Class Codes: A61P 25/24 : Antidepressants
• CPC Class Codes: A61P 25/28 : for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
• CPC Class Codes: A61P 27/16 : Otologicals
• CPC Class Codes: A61P 29/00 : Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
• CPC Class Codes: A61P 43/00 : Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• CPC Class Codes: A61P 5/00 : Drugs for disorders of the endocrine system
• CPC Class Codes: A61P 7/06 : Antianaemics
• CPC Class Codes: A61P 9/00 : Drugs for disorders of the cardiovascular system
• CPC Class Codes: A61P 9/06 : Antiarrhythmics
• CPC Class Codes: A61P 9/10 : for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
• CPC Class Codes: A61P 9/12 : Antihypertensives
• CPC Class Codes: C07D 471/20 : Spiro-condensed systems
• CPC Class Codes: C07D 519/00 : Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00

Abstract

The invention relates to pyrrolopyrazine-spirocyclic piperidine amide compounds useful as inhibitors of ion channels. The invention also provides pharmaceutically acceptable compositions comprising the compounds of the invention and methods of using the compositions in the treatment of various disorders.

Claims

1. A method of treating or lessening the severity of acute pain, chronic pain, neuropathic pain, inflammatory pain, visceral pain, osteoarthritis pain, radicular pain, sciatica, back pain, head pain, neck pain, severe pain, intractable pain, nociceptive pain, breakthrough pain, postsurgical pain, or pain associated with cancer in a subject, comprising administering to said subject an effective amount of a compound of formula I:

2. The method of claim 1, wherein the compound has formula IA:

3. The method of claim 2, wherein R² is H, COCF₃, COC(CH₃)₃, Cl, COCH₃, CF₂CF₃, CH₂CF₃, CF₃, CN, Br, COCH(CH₃)₂, COCH₂CH₃, CH(OH)CF₃, SO₂CH₃,

4. The method of claim 2, wherein R³ is H, CH₃, CH₂CH₃, CH₂CH₂OCH₃, CH₂CH₂OH, CH₂CO₂CH₂CH₃, CH₂CON(CH₃)₂, CH₂CONH₂, CH₂CN, benzyl, cyclobutyl, CH₂CH(CH₃)₂, CH(CH₃)₂, CH₂CF₃, CH₂CHF₂, COCH₃, COCH₂CH₃, CO₂CH₃, CO₂CH₂CH₃, COH, CONH(CH₃)₂, or CONHCH₃.

5. The method of claim 2, wherein R⁶ is is H, CH₃, OCH₃, OCH₂CH₃, OCH₂CH₂CH₃, OCH(CH₃)₂, CF₃, CN, Ph, SO₂CH₃, OH, CH(CH₃)₂, OCH₂CH₂CH₂CH₃, F, Cl, or CH₂OH.

6. The method of claim 2, wherein R⁷ is H, CH₃, CH₂CH₃, COC(CH₃)₃, Cl, F, OH, C(═

CH₂)CH₃, OC(═

CH₂)CH₃, OCH₃, OCH₂CH₂CH₂CH₃, CH₂OH, OCH₂CH₂OH, OCH₂CH₂CH₂OH, OC(CH₃)₃, OCH(CH₃)(CH₂CH₃), OCH₂C(CH₃)₂OH, C(CH₃)₂OH, CH₂C(CH₃)₂OH, CH(OH)CH(CH₃)₂, C(CH₃)₂CH₂OH, OCH₂CH₂CH(CH₃)₂, OCH₂CH₂CH₃, OCH(CH₃)₂, OCH₂CH₂OCH₃,

7. The method of claim 2, wherein the

8. The method of claim 1, wherein A is

9. The method of claim 8, wherein R⁵ is H, C1-C8 alkyl, C1-C8 alkoxy, halo, OCF₃, OCHF₂, R⁹, or a straight chain, branched, or cyclic (C3-C8)-R⁹ wherein up to three CH₂ units may be replaced with O, CO, S, SO, SO₂, or NR⁷.

10. The method of claim 8, wherein R⁵ is H, CH₃, OCH₃, OCF₃, OPh, Ph, OCHF₂, or F.

11. The method of claim 8, wherein R⁶ is H, C1-C8 alkyl, C1-C8 alkoxy, halo, R⁹, or a straight chain, branched, or cyclic (C3-C8)-R⁹ wherein up to three CH₂ units may be replaced with O, CO, S, SO, SO₂, or NR⁸.

12. The method of claim 8, wherein R⁶ is H, CH₃, OCH₃, OCH₂CH₃, OCH₂CH₂CH₃, OCH(CH₃)₂, CF₃, CN, Ph, SO₂CH₃, OH, CH(CH₃)₂, OCH₂CH₂CH₂CH₃, F, Cl, or CH₂OH.

13. The method of claim 8, wherein R⁷ is H, C1-C8 alkyl, C1-C8 alkoxy, SO₂R⁸, OSO₂R⁸, SO₂N(R⁸)₂, R⁹, OCHF₂, OCF₃, or a straight chain, branched, or cyclic (C3-C8)-(R⁹)_p, wherein p is 1 or 2 and wherein up to three CH₂ units may be replaced with O, CO, S, SO, SO₂, or NR⁸.

14. The method of claim 8, wherein R⁷ is H, CH₃, CH₂CH₃, C(CH₃)₃, Cl, F, OH, C(═

CH₂)CH₃, OC(═

CH₂)CH₃, OCH₃, OCH₂CH₂CH₂CH₃, CH₂OH, OCH₂CH₂OH, OCH₂CH₂CH₂OH, OC(CH₃)₃, OCH(CH₃)(CH₂CH₃), OCH₂C(CH₃)₂OH, C(CH₃)₂OH, CH₂C(CH₃)₂OH, CH(OH)CH(CH₃)₂, C(CH₃)₂CH₂OH, OCH₂CH₂CH(CH₃)₂, OCH₂CH₂CH₃, OCH(CH₃)₂, OCH₂CH₂OCH₃,

15. The method of claim 8, wherein

16. The method of claim 1, wherein, independently for each occurrence:

R¹ is H, C1-C6 alkyl, C3-C8 cycloalkyl, halo, CN, NR⁸SO₂R⁸, SO₂R⁸, SR⁸, SOR⁸, NR⁸COR⁸, NR⁸CO₂R⁸, CON(R⁸)₂, SO₂N(R⁸)₂, CF₃, heterocycloalkyl, or a straight chain, branched, or cyclic (C3-C8)-R⁹ wherein up to two CH₂ units may be replaced with O, CO, S, SO, SO₂ or NR⁸, or two R¹ taken together form an oxo group;

R² is H, C1-C6 alkyl, C1-C6 haloalkyl, CN, OH, SO₂R⁸, SR⁸, SOR⁸, CO₂R⁸, CON(R⁸)₂, SO₂N(R⁸)₂, CF₃, CHF₂, or a straight chain, branched, or cyclic (C3-C8)-R⁹ wherein up to two CH₂ units may be replaced with O, CO, S, SO, SO₂, CF₂, or NR⁸;

R³ is H, C1-C6 alkyl, C3-C8 cycloalkyl, CO₂R⁸, COR⁸, COH, CON(R⁸)₂, CF₃, CH₂CF₃, CH₂CHF₂, or a straight chain, branched, or cyclic (C3-C8)-R⁹ wherein up to two CH₂ units may be replaced with O, CO, S, SO, SO₂ or NR⁸;

R⁴ is H, C1-C6 alkyl, halo, C3-C8 cycloalkyl, wherein up to two CH₂ units may be replaced by O, CO, S, SO, SO₂, or NR⁸, or 2 R⁴ taken together form a fused 3 to 7 membered cycloalkyl ring;

R⁸ is H, C1-C6 alkyl, CF₃, C3-C8 cycloalkyl, or a straight chain, branched, or cyclic (C3-C8)-R⁹ wherein up to two CH₂ units may be replaced with O, CO, S, SO, SO₂ or NR, or 2 R⁸ taken together with the atoms to which they are attached form a ring;

R⁹ is H, CF₃, CO₂R, OH, aryl, heteroaryl, C3-C8 cycloalkyl, heterocycloalkyl, N(R)₂, NRCOR, CON(R)₂, CN, or SO₂R; and

R is H, C1-C6 alkyl, aryl, heteroaryl, C3-C8 cycloalkyl, or heterocycloalkyl.

17. The method of claim 1, wherein R¹ is C1-C8 alkyl.

18. The method of claim 1, wherein R² is H, C1-C8 alkyl, halo, CF₃, CN, COR⁸, CON(R⁸)₂, or a straight chain, branched, or cyclic (C3-C8)-R⁹ wherein up to two CH₂ units may be replaced with O, CO, S, SO, SO₂, CF₂, or NR⁸.

19. The method of claim 1, wherein R² is COCF₃, COC(CH₃)₃, Cl, COCH₃, CF₂CF₃, CH₂CF₃, CF₃, CN, Br, COCH(CH₃)₂, COCH₂CH₃, CH(OH)CF₃, SO₂CH₃,

20. The method of claim 1, wherein R³ is H, C1-C8 alkyl, CO₂R⁸, COR⁸, COH, CON(R⁸)₂ or a straight chain, branched, or cyclic (C3-C8)-R⁹ wherein up to two CH₂ units may be replaced with O, CO, S, SO, SO₂ or NR⁸.

21. The method of claim 1, wherein R³ is H, CH₃, CH₂CH₃, CH₂CH₂OCH₃, CH₂CH₂OH, CH₂CO₂CH₂CH₃, CH₂CON(CH₃)₂, CH₂CONH₂, CH₂CN, benzyl, cyclobutyl, CH₂CH(CH₃)₂, CH(CH₃)₂, CH₂CF₃, CH₂CHF₂, COCH₃, COCH₂CH₃, CO₂CH₃, CO₂CH₂CH₃, COH, CONH(CH₃)₂, or CONHCH₃.

22. The method of claim 1, wherein R⁴ is H, halo, or C1-C8 alkyl.

23. The method of claim 1, wherein m is 0, 1, or 2.

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

25. The method of claim 1, wherein o is 0 or 1.

26. The method of claim 1, wherein the compound is selected from the following table:

27. A method of treating or lessening the severity of acute pain, chronic pain, neuropathic pain, inflammatory pain, visceral pain, osteoarthritis pain, radicular pain, sciatica, back pain, head pain, neck pain, severe pain, intractable pain, nociceptive pain, breakthrough pain, postsurgical pain, or pain associated with cancer in a subject, comprising administering to said subject an effective amount of a compound of formula I:

28. The method of claim 27, wherein the compound has formula IA:

29. The method of claim 27, wherein the

30. The method of claim 27, wherein the compound is selected from the following table: