Patent US3674810A successfully refreshed from Google Patents.
US3674810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-chloro-5-(2-methylene-butyryl)-benzo(6)thiophene-2-carboxylic acids
Assignee: Novartis Corp
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Filing: 1970-08-19
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Granted: 1972-07-04
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Expires: 1990-08-19
Abstract
Abstract The production of 5-(2-methylene-alkanoyl)-benzofuran-, 5-(2methylene-alkanoyl)-indole- and 5-(2-methylene-alkanoyl)benzo(b)thiophene-2-carboxylic acids by reaction of the corresponding 5-(2-dimethylaminomethyl-alkanoyl)- derivatives with sodium acetate in the glacial acetic acid and their pharmaceutically acceptable salts with bases, a method of producing a diuretic and saluretic effect in mammals comprising administering said compounds to said mammals and pharmaceutical compositions containing said compounds are described. A typical embodiment is 5-(2-methylene-butyryl)-6-methyl-benzofuran-2carboxylic acid.
Inventors
- 👤 Janos Zergenyi
- 👤 Ernst Habicht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:47
CPC Classifications
C; C07; C07D; C07D333/00; C07D333/50; C07D333/52; C07D333/62; C07D333/68
Claims Analysis
Total Claims: 0
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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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |