US4025504A
Expired / Lapsed
US
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Broad Spectrum antibiotics
Assignee: Pfizer Inc
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Filing: 1975-12-15
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Granted: 1977-05-24
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Expires: 1995-12-15
Abstract
Abstract 6-[ alpha -(Amidino- and imidoylaminoalkanoylamino)aracylamino]-penicillanic acids and synthetic methods for the preparation thereof.
Inventors
- 👤 Ernest S. Hamanaka
- 👤 John G. Stam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:47
CPC Classifications
C; C07; C07D; C07D499/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
A compound selected from the group consisting of those of the formula ##STR361## and the pharmaceutically acceptable basic salts or acid addition salts thereof, wherein Ar is selected from the group consisting of phenyl, 4-hydroxyphenyl, 2-thienyl and 3-thienyl; A is alkylidene containing from 2 to 3 carbon atoms; and R 9 is selected from the group consisting of pyridyl; pyrimidinyl; pyridazinyl; pyrazinyl; benzimidazolyl; pyrryl; 2-pyrrolinyl; picolyl; substituted pyridyl wherein said substituent is selected from the group consisting of fluoro, chloro, bromo and 2,6-dichloro; and pyridyl-1-oxide.
Claim 2
Dependent Claim
85 words
A compound selected from the group consisting of those of the formula ##STR361## and the pharmaceutically acceptable basic salts or acid addition salts thereof, wherein Ar is selected from the group consisting of phenyl, 4-hydroxyphenyl, 2-thienyl and 3-thienyl; A is alkylidene containing from 2 to 3 carbon atoms; and R 9 is selected from the group consisting of pyridyl; pyrimidinyl; pyridazinyl; pyrazinyl; benzimidazolyl; pyrryl; 2-pyrrolinyl; picolyl; substituted pyridyl wherein said substituent is selected from the group consisting of fluoro, chloro, bromo and 2,6-dichloro; and pyridyl-1-oxide.
Claim 3
Dependent Claim
9 words
A compound of claim 1, wherein Ar is phenyl.
Claim 4
Dependent Claim
14 words
The compound of claim 2 wherein A is ##STR362## and R 9 is 4-pyridyl.
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) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |