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US3965093A
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6-Arylthio penicillanic acid and derivatives thereof
Assignee: ER Squibb and Sons LLC
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Filing: 1974-08-26
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Granted: 1976-06-22
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Expires: 1994-08-26
Abstract
Abstract Disclosed herein are penicillanic acids and derivatives thereof which are substituted in the 6-position, processes for preparing such compounds and the utility thereof. The compounds of the invention have been found to be useful as antibacterial agents.
Inventors
- 👤 Joseph Edward Dolfini
- 👤 Ekkehard Bohme
- 👤 William A. Slusarchyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:42
CPC Classifications
C; C07; C07D; C07D499/00; C07D499/21; C07D499/42
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
102 words
A compound of the formula ##SPC5## wherein R 3 is selected from the group consisting of phenylthio and nitrophenylthio; R 4 is selected from the group consisting of hydrogen, lower alkyl, benzyl, methoxybenzyl, benzhydryl, trimethylsilyl, and trichloroethyl; and R is selected from the group consisting of ##EQU3## 2 wherein n is zero or one, X 1 is O or S, and R 2 is selected from the group consisting of thienyl, phenyl, and mono and disubstituted phenyl and thienyl wherein said substituents are selected from the group consisting of chloro, bromo, nitro, lower alkyl, and lower alkoxy; and pharmaceutically acceptable salts thereof.
Claim 2
Dependent Claim
102 words
A compound of the formula ##SPC5## wherein R 3 is selected from the group consisting of phenylthio and nitrophenylthio; R 4 is selected from the group consisting of hydrogen, lower alkyl, benzyl, methoxybenzyl, benzhydryl, trimethylsilyl, and trichloroethyl; and R is selected from the group consisting of ##EQU3## 2 wherein n is zero or one, X 1 is O or S, and R 2 is selected from the group consisting of thienyl, phenyl, and mono and disubstituted phenyl and thienyl wherein said substituents are selected from the group consisting of chloro, bromo, nitro, lower alkyl, and lower alkoxy; and pharmaceutically acceptable salts thereof.
Claim 3
Dependent Claim
14 words
The compound of claim 1 wherein R 3 is nitrophenylthio and R is ##EQU4##
Claim 4
Dependent Claim
10 words
The compound of claim 2 wherein R 4 is methoxybenzyl.
Claim 5
Dependent Claim
10 words
The compound of claim 2 wherein R 4 is hydrogen.
References Cited (Backward Citations)
US3697507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |