US3558608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
20-(n-(n',n' - disubstituted aminoalkyl) formamido)-5alpha-pregnan-3beta-ols and delta**5 derivatives thereof
Assignee: GD Searle LLC
•
Filing: 1968-12-30
•
Granted: 1971-01-26
•
Expires: 1988-12-30
Abstract
Abstract 20 - (N - (N'',N'' - DISUBSTITUTED AMINOALKYL)FORMAMIDO) - 5A - PREGNAN - 3B - OLS AND $5 DERIVATIVES THEREOF ARE PREPARED BY REACTION OF THE CORRESPONDING 20-(N(N'',N''-DISUBSTITUTED AMINOALKYL)AMINO) COMPOUNDS WITH A FORMYLATING REAGENT. THESE FORMAMIDO COMPOUNDS DISPLAY USEFUL PHARMACOLOGICAL PROPERTIES, E.G., ANTI-INFLAMMATORY, ANTI-BACTERIAL, ANTI-PROTOZOAL AND ANTI-ALGAL.
Inventors
- 👤 Paul D Klimstra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:15
CPC Classifications
C; C07; C07J; C07J41/00; C07J41/0033; C07J41/005; C07J43/00; C07J43/003
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |