Alpha-thioureidocephalosporanic acid compounds
Abstract
Abstract NEW A-THIOUREIDOCEPHALOSPORANIC ACID COMPOUNDS OF THE FOLLOWING GENERAL FORMULA, AND THEIR SALTS, R1 IS HYDROGEN, LOWER ALKYL, CYCLO-LOWER ALKYL, UNSATURATED CYCLO-LOWER ALKYL, ARYL, ARALKYL OR A HETEROCYCLIC GROUP, R2 IS HYDROGEN OR LOWER ALKYL, R3 IS HYDROGEN, LOWER ALKYL, LOWER ALKENYL, PHENYL, BENZOYL, LOWER ALKOXYLOWER ALKYL OR (CARBO-LOWER ALKOXY) LOWER ALKYL, R4 IS LOWER ALKYL, ARYL OR ARALKYL AND X IS HYDROGEN, HYDROXY, LOWER ALKANOYLOXY, AROYLOXY, ARALKANOYLOXY, THE RADICAL OF NITROGEN BASE, A QUATERNARY AMMONIUM RADICAL OR TOGETHER X AND R REPRESENT A BOND LINKING CARBON AND OXYGEN IN A LACTONE RING, ARE USEFUL AS ANTIBACTERIAL AGENTS. -CH2-OOC-R4 WHEREIN R IS HYDROGEN, LOWER ALKYL, ARALKYL, A SALT FORMING ION OR THE GROUP CH2-)-2-CEPHEM 7-(R3-N(-R2)-C(=S)-NH-CH(-R1)-CO-NH-),2-(R-OOC-),3-(X-
Inventors
- 👤 H Breuer
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |