Pyrazole derivatives as modulators of the 5-HT;serotonin receptor useful for the treatment of disorders related thereto

• US 9,434,692 B2
• Filed: 10/02/2007
• Issued: 09/06/2016
• Est. Priority Date: 10/03/2006
• Status: Active Grant

• Current Assignee: Arena Pharmaceuticals Incorporated
• Original Assignee: Arena Pharmaceuticals Incorporated
• Inventors: Xiong, Yifeng, Cherrier, Martin C., Choi, Jin Sun Karoline, Dosa, Peter I., Smith, Brian M., Strah-Pleynet, Sonja, Ullman, Brett, Teegarden, Bradley
• Primary Examiner(s): BERNHARDT, EMILY A
• Application Number:
  US12/444,098
• Publication Number:
  US 20100004264A1
• Time in Patent Office: 3,262 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61P 11/06 Antiasthmatics
• CPC Class Codes: A61P 25/00 Drugs for disorders of the nervous system
• CPC Class Codes: A61P 25/04 Centrally acting analgesics, e.g. opioids
• 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 25/20 Hypnotics; Sedatives
• CPC Class Codes: A61P 25/22 Anxiolytics
• 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 27/06 Antiglaucoma agents or miotics
• 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 3/10 for hyperglycaemia, e.g. antidiabetics
• CPC Class Codes: A61P 31/12 Antivirals
• CPC Class Codes: A61P 43/00 Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• CPC Class Codes: A61P 7/02 Antithrombotic agents; Anticoagulants; Platelet aggregation inhibitors
• CPC Class Codes: A61P 7/12 Antidiuretics, e.g. drugs for diabetes insipidus ADH A61P5/10
• 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: A61P 9/14 Vasoprotectives; Antihaemorrhoidals; Drugs for varicose therapy; Capillary stabilisers
• CPC Class Codes: C07D 231/14 : with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
• CPC Class Codes: C07D 231/16 : Halogen atoms or nitro radicals
• CPC Class Codes: C07D 231/54 : condensed with carbocyclic rings or ring systems
• CPC Class Codes: C07D 403/06 : linked by a carbon chain containing only aliphatic carbon atoms
• CPC Class Codes: C07D 403/12 : linked by a chain containing hetero atoms as chain links
• CPC Class Codes: C07D 403/14 : containing three or more hetero rings
• CPC Class Codes: C07D 405/04 : directly linked by a ring-member-to-ring-member bond

Abstract

Pyrazole derivatives of Formula (Ia) and pharmaceutical compositions thereof that modulate the activity of the serotonin 5HT_2A receptor. Formula (Ia). Compounds and pharmaceutical compositions thereof are directed to methods useful in the treatment of insomnia and related sleep disorders, platelet aggregation, coronary artery disease, myocardial infarction, transient ischemic attack, angina, stroke, atrial fibrillation, reducing the risk of blood clot formation, asthma or symptoms thereof, agitation or symptoms thereof, behavioral disorders, drug induced psychosis, excitative psychosis, Gilles de Ia Tourette'"'"'s syndrome, manic disorder, organic or NOS psychosis, psychotic disorders, psychosis, acute schizophrenia, chronic schizophrenia, NOS schizophrenia and related disorders, diabetic-related disorders, progressive multifocal leukoencephalopathy and the like. The present invention also relates to the methods for the treatment of 5-HT_2A serotonin receptor mediated disorders in combination with other pharmaceutical agents administered separately or together.

Claims

1. A compound having Formula (Ic):

2. A compound having Formula (Ic):

3. A compound having Formula (Ie):

4. A compound having Formula (Ie):

5. A compound selected from the group consisting of:

2-[4-(1,5-Dimethyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-{4-[2-(4-chloro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

1-(4-Fluoro-phenyl)-2-[4-(2-methyl-5-phenyl-2H-pyrazole-3-carbonyl)-piperazin-1-yl]-ethanone;

2-[4-(4-Bromo-2,5-dimethyl-2H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

5-{2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-ethyl}-6-chloro-1,3-dihydro-indol-2-one;

2-[(S)-4-(4-Chloro-1-methyl-1H-pyrazole-3-carbonyl)-3-methyl-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

2-[4-(4-Chloro-1-ethyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-{4-[2-(2-fluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

2-[(S)-4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-3-methyl-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

2-[4-(4-Chloro-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

1-(4-Fluoro-phenyl)-2-[4-(1,4,5,6-tetrahydro-cyclopentapyrazole-3-carbonyl)-piperazin-1-yl]-ethanone;

2-[(R)-4-(4-Chloro-1-methyl-1H-pyrazole-3-carbonyl)-2-methyl-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(3-fluoro-phenyl)-ethanone;

2-[(R)-4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-2-methyl-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

(4-Chloro-1-ethyl-1H-pyrazol-3-yl)-{4-[2-(4-fluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

2-[4-(1-tert-Butyl-5-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-pyrrolidin-1-yl-phenyl)-ethanone;

1-(4-Fluoro-phenyl)-2-{4-[1-(4-methoxy-phenyl)-5-phenyl-1H-pyrazole-3-carbonyl]-piperazin-1-yl}-ethanone;

2-[4-(5-tert-Butyl-2-methyl-2H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

(4-Chloro-1-methyl-1H-pyrazol-3-yl)-{4-[2-(4-fluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-{4-[2-(4-methoxy-phenyl)-ethyl]-piperazin-1-yl}-methanone;

2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-methanesulfonyl-phenyl)-ethanone;

(4-Chloro-1-methyl-1H-pyrazol-3-yl)-{4-[2-(2-fluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone O-methyl-oxime;

(4-Bromo-2,5-dimethyl-2H-pyrazol-3-yl)-{4-[2-(4-fluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

1-(4-Fluoro-phenyl)-2-[4-(1-methyl-4-o-tolyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-ethanone;

2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-trifluoromethoxy-phenyl)-ethanone;

2-[4-(4-Chloro-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(3-fluoro-phenyl)-ethanone;

1-(4-Fluoro-phenyl)-2-[4-(5-methyl-2-phenyl-2H-pyrazole-3-carbonyl)-piperazin-1-yl]-ethanone;

(4-Bromo-2-methyl-2H-pyrazol-3-yl)-{4-[2-(4-fluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

2-[4-(5-Cyclopropyl-4-fluoro-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

(4-Chloro-1-methyl-1H-pyrazol-3-yl)-{4-[2-(3-fluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

1-(4-Fluoro-phenyl)-2-[4-(1-methyl-5-trifluoromethyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-ethanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-{4-[2-(4-fluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

2-[4-(5-Ethyl-4-fluoro-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-{4-[2-(3-fluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

2-[4-(4-Chloro-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-chloro-phenyl)-ethanone;

2-[4-(4-Chloro-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

{4-[2-(4-Fluoro-phenyl)-ethyl]-piperazin-1-yl}-(2-methyl-2H-pyrazol-3-yl)-methanone;

2-[4-(4-Fluoro-5-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-(4-phenethyl-piperazin-1-yl)-methanone;

(4-Chloro-1-methyl-1H-pyrazol-3-yl)-{4-[2-(4-chloro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

1-(4-Fluoro-phenyl)-2-[4-(5-isopropyl-2H-pyrazole-3-carbonyl)-piperazin-1-yl]-ethanone;

(4-Chloro-1,5-dimethyl-1H-pyrazol-3-yl)-{4-[2-(4-fluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

1-(4-Fluoro-phenyl)-2-[4-(4-iodo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-ethanone;

2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(3,4-difluoro-phenyl)-ethanone;

5-{2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-acetyl}-6-chloro-1,3-dihydro-indol-2-one;

1-(4-Fluoro-phenyl)-2-[4-(5-methyl-2H-pyrazole-3-carbonyl)-piperazin-1-yl]-ethanone

(4-Bromo-1,5-dimethyl-1H-pyrazol-3-yl)-{4-[2-(4-fluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

2-[4-(4-Bromo-5-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

(4-Bromo-1,5-dimethyl-1H-pyrazol-3-yl)-{(S)-4-[2-(4-fluoro-phenyl)-ethyl]-3-methyl-piperazin-1-yl}-methanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-{(S)-4-[2-(4-fluoro-phenyl)-ethyl]-2-methyl-piperazin-1-yl}-methanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-{4-[2-(2-chloro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

{4-[2-(4-Fluoro-phenyl)-ethyl]-piperazin-1-yl}-(5-isopropyl-2H-pyrazol-3-yl)-methanone;

2-[4-(4-Chloro-5-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-{(S)-4-[2-(4-fluoro-phenyl)-ethyl]-3-methyl-piperazin-1-yl}-methanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-{(R)-4-[2-(4-fluoro-phenyl)-ethyl]-2-methyl-piperazin-1-yl}-methanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-{4-[2-(3-chloro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

(1,5-Dimethyl-1H-pyrazol-3-yl)-{4-[2-(4-fluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

2-[4-(4-Chloro-1,5-dimethyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

(4-Chloro-1-methyl-1H-pyrazol-3-yl)-{4-[2-(4-fluoro-phenyl)-2-methyl-propyl]-piperazin-1-yl}-methanone;

2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-naphthalen-2-yl-ethanone;

2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(2-methoxy-phenyl)-ethanone;

1-(4-Fluoro-phenyl)-2-[4-(5-furan-2-yl-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-ethanone;

{4-[2-(4-Fluoro-phenyl)-ethyl]-piperazin-1-yl}-(5-methyl-1H-pyrazol-3-yl)-methanone

2-[4-(4-Bromo-1,5-dimethyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

(4-Chloro-1-methyl-1H-pyrazol-3-yl)-{4-[2-(4-fluoro-phenyl)-propyl]-piperazin-1-yl}-methanone;

2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-chloro-phenyl)-ethanone;

2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(2-fluoro-phenyl)-ethanone;

1-(4-Fluoro-phenyl)-2-[4-(1-methyl-5-phenyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-ethanone;

(4-Bromo-1,5-dimethyl-1H-pyrazol-3-yl)-{(R)-4-[2-(4-fluoro-phenyl)-ethyl]-3-methyl-piperazin-1-yl}-methanone;

1-(4-Fluoro-phenyl)-2-[4-(1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-ethanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-{(R)-4-[2-(4-fluoro-phenyl)-ethyl]-3-methyl-piperazin-1-yl}-methanone;

1-(4-Fluoro-phenyl)-2-[4-(5-nitro-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-ethanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-{4-[2-(4-fluoro-phenyl)-2-hydroxy-ethyl]-piperazin-1-yl}-methanone;

2-[(S)-4-(4-Bromo-1,5-dimethyl-1H-pyrazole-3-carbonyl)-2-methyl-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

2-[4-(2-Ethyl-5-methyl-2H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

2-[(S)-4-(4-Chloro-1-methyl-1H-pyrazole-3-carbonyl)-2-methyl-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(2,4-difluoro-phenyl)-ethanone;

2-[(S)-4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-2-methyl-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone;

{4-[2-(4-Fluoro-phenyl)-ethyl]-piperazin-1-yl}-(1-methyl-5-trifluoromethyl-1H-pyrazol-3-yl)-methanone;

(4-Bromo-1-methyl-1H-pyrazol-3-yl)-{4-[2-(2,4-difluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone; and

(4-Chloro-1-methyl-1H-pyrazol-3-yl)-{4-[2-(2,4-difluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone;

or a pharmaceutically acceptable salt, hydrate or solvate thereof.

6. A compound which is 2-[(S)-4-(4-Chloro-1-methyl-1H-pyrazole-3-carbonyl)-3-methyl-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone, or a pharmaceutically acceptable salt, solvate or hydrate thereof.

7. A compound which is 2-[(S)-4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-3-methyl-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone, or a pharmaceutically acceptable salt, solvate or hydrate thereof.

8. A compound which is 2-[4-(4-Chloro-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone, or a pharmaceutically acceptable salt, solvate or hydrate thereof.

9. A compound which is 2-[(R)-4-(4-Chloro-1-methyl-1H-pyrazole-3-carbonyl)-2-methyl-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone, or a pharmaceutically acceptable salt, solvate or hydrate thereof.

10. A compound which is 2-[4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone, or a pharmaceutically acceptable salt, solvate or hydrate thereof.

11. A compound which is 2-[(R)-4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-2-methyl-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone, or a pharmaceutically acceptable salt, solvate or hydrate thereof.

12. A compound which is 2-[(S)-4-(4-Chloro-1-methyl-1H-pyrazole-3-carbonyl)-2-methyl-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone, or a pharmaceutically acceptable salt, solvate or hydrate thereof.

13. A compound which is 2-[(S)-4-(4-Bromo-1-methyl-1H-pyrazole-3-carbonyl)-2-methyl-piperazin-1-yl]-1-(4-fluoro-phenyl)-ethanone, or a pharmaceutically acceptable salt, solvate or hydrate thereof.

14. A compound which is (4-Bromo-1-methyl-1H-pyrazol-3-yl)-{4-[2-(2,4-difluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone, or a pharmaceutically acceptable salt, solvate or hydrate thereof.

15. A compound which is (4-Chloro-1-methyl-1H-pyrazol-3-yl)-{4-[2-(2,4-difluoro-phenyl)-ethyl]-piperazin-1-yl}-methanone, or a pharmaceutically acceptable salt, solvate or hydrate thereof.