US3882134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-Substituted-3,5-dipyridyl-1,2,4-triazoles
Assignee: Merck and Co Inc
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Filing: 1973-05-21
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Granted: 1975-05-06
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Expires: 1993-05-21
Abstract
Abstract Compounds useful in the treatment of asthma, the symptoms of allergy and in some instances in gout and hyperuricemia are described. The novel compounds are 1-substituted-1,2,4-triazoles being additionally substituted at the 3- and 5-positions with a pyridyl radical. Methods of preparing these tri-substituted triazoles are described.
Inventors
- 👤 John J Baldwin
- 👤 Frederick C Novello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:29
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/435; A61K31/44; C; C07; C07D; C07D401/00; C07D401/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
14 words
A triazole as claimed in claim 1 wherein R3 and R5 each represent 4-pyridyl.
Claim 2
Dependent Claim
18 words
A triazole as claimed in claim 1 wherein R1 is benzyl; and R3 and R5 each represent 4-pyridyl.
Claim 3
Dependent Claim
8 words
A triazole of claim 2 wherein R1 is
Claim 4
Dependent Claim
8 words
A triazole of claim 2 wherein R1 is
Claim 5
Dependent Claim
9 words
A triazole of claim 2 wherein R1 is -CH2-CHOH-CH2OH
Claim 6
Dependent Claim
8 words
A triazole of claim 2 wherein R1 is
Claim 7
Dependent Claim
9 words
A triazole of claim 2 wherein R1 is -CH2-CH2-N(C2H5)2.
Claim 8
Dependent Claim
13 words
A triazole of claim 2 wherein R1 is selected from -CH2-CH2-OH and -CH2-CH2-CH2-OH.
Claim 9
Dependent Claim
11 words
Pharmaceutically acceptable acid addition salts of the triazoles of claim 1.
References Cited (Backward Citations)
US3308131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |