US3869458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3{40 -O-Acetyl-18{40 -glycyrrhetyl-N-carboethoxy piperazinoamides
Assignee: Biorex Laboratories Ltd
•
Filing: 1970-07-08
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Granted: 1975-03-04
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Expires: 1990-07-08
Abstract
Abstract New amide derivatives of glycyrrhetinic acid and of 3-O-acylglycyrrhetinic acid are provided in which the amide grouping is derived from piperazine or from an N-carboalkoxy-piperazine. The new compounds are valuable in the treatment of inflammatory conditions and especially of arthritic conditions.
Inventors
- 👤 John Cameron Turner
- 👤 Rosalind Po Kuen Chan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:35
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/182; C07D295/185
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
1 words
3''-O-ACETYL-18B''-GLYCYRRHETYL-N-CARBOETHOXYPIPERAZINAMIDE.
Claim 2
Dependent Claim
1 words
3''-O-ACETYL-18B''-GLYCYRRHETYL-N-CARBOETHOXYPIPERAZINAMIDE.
Claim 3
Dependent Claim
3 words
3''-O-acetyl-18 Alpha ''-glycyrrhetyl-N-carboethoxy-piperazinamide.
Claim 4
Dependent Claim
3 words
3''-O-acetyl-18 Alpha ''-glycyrrhetyl-N-carboethoxy-piperazinamide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |