US3832347A
Expired / Lapsed
US
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Imino-halides of 3-amido-2-halo-1-(1'-protected carboxy-2'-methyl-1'-propenyl)-4-azetidinones
Assignee: Eli Lilly and Co
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Filing: 1971-09-21
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Granted: 1974-08-27
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Expires: 1991-09-21
Abstract
Abstract IMINO-HALIDES OF 3-AMIDO-2-HALO-1-(1''-PROTECTED CARBOXY-2''-METHYL-1''-PROPENYL)-4-AZETIDINONES, AND A PROCESS FOR PREPARING BICYCLIC THIAZOLINE AZETIDINONES BY REACTING THE ABOVE IMINO-HALIDES WITH HYDROGEN SULFIDE OR A THIOALKANOATE ION IN THE PRESENCE OF A BASE IN AN APROTIC SOLVENT. THE THIAZOLINE AZETIDINONE COMPOUNDS ARE USEFUL IN PROCESSES FOR MAKING AMIDO-THIAZOLE COMPOUNDS WHICH ARE USEFUL AS ANTIBACTERIAL AND ANTIFUNGAL AGENTS.
Inventors
- 👤 S Kukolja
- 👤 S Lammert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:01
CPC Classifications
C; C07; C07D; C07D513/00; C07D513/02; C07D513/04; C07D205/00; C07D205/02; C07D205/06; C07D205/08; C07D205/085
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |