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US4680398A
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US
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Pyrazolo[1,5-a]pyridines and benzimidazoles, useful as antiallergic agents
Assignee: Kyorin Pharmaceutical Co Ltd
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Filing: 1986-01-30
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Granted: 1987-07-14
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Expires: 2006-01-30
Abstract
Abstract The present invention is concerned with certain novel anti-allergic agents and process for their preparation.
Inventors
- 👤 Tsutomu Irikura
- 👤 Keigo Nishino
- 👤 Kyuya Okamura
- 👤 Toshiya Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:52
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/04; A; A61; A61P; A61P11/00; A61P27/00; A61P27/16; A61P37/00; A61P37/08; A61P43/00; C07D235/00; C07D235/02; C07D235/04; C07D235/24; C07D235/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
50 words
Compounds having general formula (I) ##STR10## wherein Ar is a pyrazolo[1,5-a]pyridin-3-yl ring which may be substituted by a straight or branched alkyl group having 1 to 4 carbon atoms, or Ar is a benzimidazol-2-yl ring, and n is an integer of 0 to 2, or a pharmaceutically acceptable salt thereof.
Claim 2
Dependent Claim
50 words
Compounds having general formula (I) ##STR10## wherein Ar is a pyrazolo[1,5-a]pyridin-3-yl ring which may be substituted by a straight or branched alkyl group having 1 to 4 carbon atoms, or Ar is a benzimidazol-2-yl ring, and n is an integer of 0 to 2, or a pharmaceutically acceptable salt thereof.
Claim 3
Dependent Claim
9 words
The compound according to claim 1, which is 2-[3-(4-acetyl-3-hydroxy-2-propylphenoxy)-propylthio]benzimidazole.
Claim 4
Dependent Claim
9 words
The compound according to claim 1, which is 3-[3-(4-acetyl-3-hydroxy-2-propylphenoxy)-propylthio]-2-isopropylpyrazolo[1,5-a]pyridine.
Claim 5
Dependent Claim
9 words
The compound according to claim 1, which is 3-[3-(4-acetyl-3-hydroxy-2-propylphenoxy)-propylthio]-2-isopropylpyrazolo[1,5-a]pyridine-S-oxide.
Claim 6
Dependent Claim
9 words
The compound according to claim 1, which is 3-[3-(4-acetyl-3-hydroxy-2-propylphenoxy)-propylsulfonyl]-2-isopropylpyrazolo[1,5-a]pyridine.
Claim 7
Dependent Claim
14 words
The compound according to claim 1, wherein Ar is ##STR11## and n is 0.
Claim 8
Dependent Claim
14 words
The compound according to claim 1, wherein Ar is ##STR12## and n is 1.
Claim 9
Dependent Claim
14 words
The compound according to claim 1, wherein Ar is ##STR13## and n is 2.
Claim 10
Dependent Claim
14 words
The compound according to claim 1, wherein Ar is ##STR14## and n is 1.
Claim 11
Dependent Claim
14 words
The compound according to claim 1, wherein Ar is ##STR15## and n is 2.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |