US3668203A
Expired / Lapsed
US
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Cephalosporius having a thioltherified methyl group in the 3-position
Assignee: Glaxo Laboratories Ltd
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Filing: 1969-06-13
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Granted: 1972-06-06
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Expires: 1989-06-13
Abstract
Abstract 7 Beta -ACYLAMIDOCEPH-3-EM-4-CARBOXYLIC ACIDS HAVING A THIOETHERIFIED METHYL GROUP AT THE 3-POSITION AND PHYSIOLOGICALLY ACCEPTABLE DERIVATIVES THEREOF. The compounds have utility as antibiotics and show significant absorption after oral administration.
Inventors
- 👤 John Colin Clark
- 👤 James Kennedy
- 👤 Alan Gibson Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:02
CPC Classifications
C; C07; C07D; C07D501/00; C07D501/14; C07D501/16; C07D501/20; C07D501/24; C07D501/36; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/54; A61K31/542; A61K31/545
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
13 words
A compound as defined in claim 1 wherein Ar is a phenyl -n-propylthiomethylceph--
Claim 2
Dependent Claim
17 words
A compound as defined in claim 1 in which R is a group (b) of the formula
Claim 3
Dependent Claim
16 words
A compound as defined in claim 1 in which m is 0 and R1 is methyl.
Claim 4
Dependent Claim
10 words
A compound as defined in claim 1 having the formula
Claim 5
Dependent Claim
14 words
A compound as defined in claim 1 is 7 Beta -(D- Alpha -aminophenylacetamido)-3-methylthio-methyl-ceph-3-em-4-carboxylic acid.
Claim 6
Dependent Claim
13 words
A compound as defined in claim 1 7 Beta -(D- Alpha -aminophenylacetamido)-3-n-propylthiomethylceph--3-em-4-carboxylic acid.
Claim 7
Dependent Claim
15 words
A compound as defined in claim 1 which is 7 Beta -(D- Alpha -aminophenylacetamido)-3-ethylthiomethylceph-3-em-4-carboxylic acid.
Claim 8
Dependent Claim
15 words
A compound as defined in claim 1 which is 7 Beta -(D-60 Alpha -amionphenylacetamido)3-n-butylthiomethylceph-3-em-4-carboxylic acid.
Claim 9
Dependent Claim
15 words
A compound as defined in claim 1 which is 7 Beta -(D- Alpha -aminophenylacetamido)-3-methylsulphinylmethylceph-3-em-4-carboxylic acid.
Claim 10
Dependent Claim
15 words
A compound as defined in claim 1 which is 7 Beta -(2'', 2''-dimethyl-5''-oxo-4''-phenyl-1''-imidazolidinyl)-3-methylthiomethylceph-3-em -4-carboxylic acid.
References Cited (Backward Citations)
US3243435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |