US3574208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-tertiaryamino propionyl-benzo furan-2-carboxylic acid
Assignee: Novartis Corp
•
Filing: 1968-07-22
•
Granted: 1971-04-06
•
Expires: 1988-07-22
Abstract
Abstract 5-(2-DI(LOWER)ALKYLAMINOMETHYL-(LOWER)ALKANOYL)BENZOFURAN-2-CARBOXYLIC ACIDS AND THEIR PHARMACEUTICALLY ACCEPTABLE SALTS WITH ACIDS AND BASES ARE PREPARED BY MANNICH CONDENSATION OF 5-LOWER-ALKANOYL-SUBSTITUTED BENZOFURAN-2-CARBOXYLIC ACIDS WITH PARAFORM-ADEHYDE AND SECONDARY AMINES. A TYPICAL EMBODIMENT IS 5-(2-DIMETHYLAMINOMETHYL-BUTYRYL)-6-METHYL-BENZOFURAN-2-CARBOXYLIC ACID HYDROCHLORIDE. A METHOD OF PRODUCING A DIURETIC AND A SALURETIC EFFECT COMPRISING ADMISISTRATION OF SAID COMPOUNDS TO WARM-BLOODED ANIMALS AS WELL AS PHARMACEUTICAL COMPOSITIONS CONTAINING SAID COMPOUNDS ARR PROVIDED.
Inventors
- 👤 Janos Zergenyi
- 👤 Ernst Habicht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:50
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/78; C07D307/82; C07D307/84; C07D307/85
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |