USRE29003E
Expired / Lapsed
US
⏱️ 0.0 years remaining
(R)-1-(2-furoyloxy)-3-methylbutyl-penicillin
Assignee: Hoffmann La Roche Inc
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Filing: 1975-10-02
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Granted: 1976-10-12
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Expires: 1995-10-02
Abstract
Abstract Compounds represented by the following formula ##EQU1## wherein A is a substituted or unsubstituted heterocyclic radical and T is a C 2 -C 5 alkyl, alkenyl, cyclopropylmethyl, cyclobutylmethyl or cyclopentyl group A process for their preparation and novel intermediates therefor are disclosed. These compounds are useful antibiotics.
Inventors
- 👤 Andre Furlenmeier
- 👤 Paul Lanz
- 👤 Peter Quitt
- 👤 Karl Vogler, deceased
- 👤 heir at Law by Heinrich Vogler
- 👤 heir at Law by Niklaus Eduard Vogler
- 👤 heir at Law by Franziska Elisabeth Vogler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:08
CPC Classifications
C; C07; C07D; C07D499/00; C07D307/00; C07D307/02; C07D307/04; C07D307/18; C07D307/24; C07D307/34; C07D307/56; C07D307/68; C07D307/77; C07D307/78; C07D307/82; C07D307/84
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
50 words
A compound of the formula ##EQU2## wherein A is selected from the group consisting of furyl, tetrahydrofuryl and thienyl, and T is selected from the group consisting of .Iadd.C 2 -C 5 alkyl, .Iaddend.C 2 -C 5 alkenyl, cyclopropyl-methyl, cyclobutylmethyl and cyclopentyl and pharmaceutically acceptable salts and hydrated forms thereof.
Claim 2
Dependent Claim
50 words
A compound of the formula ##EQU2## wherein A is selected from the group consisting of furyl, tetrahydrofuryl and thienyl, and T is selected from the group consisting of .Iadd.C 2 -C 5 alkyl, .Iaddend.C 2 -C 5 alkenyl, cyclopropyl-methyl, cyclobutylmethyl and cyclopentyl and pharmaceutically acceptable salts and hydrated forms thereof.
Claim 3
Dependent Claim
17 words
A compound selected from the group consisting of (R)-1-(2-furoyloxy)-3-methylbutyl-penicillin and pharmaceutically acceptable salts and hydrated forms thereof.
Claim 4
Dependent Claim
17 words
A compound selected from the group consisting of (R)-1-(2-furoyloxy)-3-methylbutyl-penicillin and pharmaceutically acceptable salts and hydrated forms thereof.
References Cited (Backward Citations)
GB1125557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |