US3708510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amides of cholanic acid,cholenic acid,and choladienic acid
Assignee: Merck and Co Inc
•
Filing: 1970-09-03
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Granted: 1973-01-02
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Expires: 1990-09-03
Abstract
Abstract N-CARBOXYALKYL AMIDES OF 5B-CHOLANIC ACID, 5B-CHOLENIC ACID AND 5B-CHOLADIENIC ACID WHEREIN THE UNSATURATION IS WITHIN THE RING ANF/OR IN THE 22-POSITION OF THE ALIPHATIC CHAIN; AND VARIOUS SALT, ESTER AND AMIDE DERIVATIVES THEREOF. THE PRODUCTS HAVE UTILITY AS HYPOCHOLESTEROLEMICS AND HYPOLIPEMICS. THE PRODUCTS ARE OBTAINED VIA THE REACTION OF THE APPROPRIATE 5B-CHOLANIC ACID, 5B-CHOLENIC ACID AND 5B-CHOLADIENIC ACID WITH AN ALKYL HALOFORMATE IN THE PRESENCE OF A BASE FOLLOWED BY THE REACTION OF THE ANHYDRIDE THUS OBTAINED WITH A CARBOXYALKYLAMINE TO AFFORD THE DESIRED PRODUCT.
Inventors
- 👤 J Hannah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:29
CPC Classifications
C; C07; C07J; C07J41/00; C07J75/00
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |