US3884919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-(Quinazolinyl) indol-3-ylacetic acids, esters and amides
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1972-10-10
•
Granted: 1975-05-20
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Expires: 1992-10-10
Abstract
Abstract 1-(Heterocyclic)-indol-3-ylacetic acid derivatives, processes for their preparation, and pharmaceutical compositions comprising them. An illustrative compound of the invention is 1-(7chloroquinazolin-4-yl)-5-methoxy-2-methylindol-3-ylacetic acid. The compounds have anti-inflammatory, analgesic and antipyretic activity.
Inventors
- 👤 George Richard Birchall
- 👤 Walter Hepworth
- 👤 Steven Collyer Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:31
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495; A61K31/505; C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/18; C07D209/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
11 words
A compound as claimed in claim 1 which is optically active.
Claim 4
Dependent Claim
16 words
A compound as claimed in claim 1 which is 1-(7-chloroquinazolin-4-yl)-5-methoxy-2-methylindol-3-ylacetic acid or a pharmaceutically-acceptable salt thereof.
Claim 5
Dependent Claim
16 words
A compound as claimed in claim 1 which is 5-methoxy-2-methyl-1-(2-methylquinazolin-4-yl)indol-3-ylacetic acid or a pharmaceutically-acceptable salt thereof.
Claim 6
Dependent Claim
16 words
A compound as claimed in claim 1 which is 1-(7-chloroquinazolin-4-yl)-2,5-dimethylindol-3-ylacetic acid or a pharmaceutically-acceptable salt thereof.
Claim 7
Dependent Claim
16 words
A compound as claimed in claim 1 which is 1-(7-chloroquinazolin-4-yl)-5-fluoro-2-methylindol-3-ylacetic acid or a pharmaceutically-acceptable salt thereof.
Claim 8
Dependent Claim
16 words
A compound as claimed in claim 1 which is methyl 1-(7-chloroquinazolin-4-yl)-5-methoxy-2-methylindol-3-ylacetate or a pharmaceutically-acceptable salt thereof.
References Cited (Backward Citations)
US3190889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |