Patent US4347355A successfully refreshed from Google Patents.
US4347355A
Expired / Lapsed
US
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Inhibitors of transpeptidase
Assignee: Abbott Laboratories
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Filing: 1980-12-01
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Granted: 1982-08-31
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Expires: 2000-12-01
Abstract
Abstract New β-lactams of the general structure: ##STR1## wherein R represents H or an acyl moiety known from the penicillin or cephalosporin art, R' is hydrogen, loweralkoxy, loweralkoxyalkyl, loweralkyl, phenylthio or loweralkylmercapto R" is loweralkyl, the broken line represents an optional double bond, and acyloxymethyl esters thereof. All compounds are effective antibacterials.
Inventors
- 👤 Daniel T. Chu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:53
CPC Classifications
C; C07; C07D; C07D477/00; C07D477/10; C07D477/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
A compound of the formula ##STR9## wherein R is hydrogen or acyl selected from the group consisting of phenacetyl, phenoxyacetyl, cyanoacetyl, thenylacetyl, p-hydroxyphenylmalonoyl, α-sulfophenacetyl, N-benzoylglycylphenylglycyl, a moiety of the formula ##STR10## wherein Y is 0 or NOR", and a mercaptoacetyl of the formula R°SCH 2 CO-- wherein R° is phenyl, 4-pyridyl, 2-chloro-2-butenyl, allyl or n-butyl, R' is hydrogen, loweralkyl, loweralkoxyalkyl, loweralkoxy, loweralkylmercapto or phenylmercapto, each R" is loweralkyl, and the broken line represents an optional double bond, and pivaloxymethyl esters thereof.
Claim 2
Dependent Claim
81 words
A compound of the formula ##STR9## wherein R is hydrogen or acyl selected from the group consisting of phenacetyl, phenoxyacetyl, cyanoacetyl, thenylacetyl, p-hydroxyphenylmalonoyl, α-sulfophenacetyl, N-benzoylglycylphenylglycyl, a moiety of the formula ##STR10## wherein Y is 0 or NOR", and a mercaptoacetyl of the formula R°SCH 2 CO-- wherein R° is phenyl, 4-pyridyl, 2-chloro-2-butenyl, allyl or n-butyl, R' is hydrogen, loweralkyl, loweralkoxyalkyl, loweralkoxy, loweralkylmercapto or phenylmercapto, each R" is loweralkyl, and the broken line represents an optional double bond, and pivaloxymethyl esters thereof.
Claim 3
Dependent Claim
10 words
An unsaturated compound of claim 1 wherein R is H.
Claim 4
Dependent Claim
10 words
A compound of claim 2 wherein each R" is methyl.
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) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |