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US3687949A
Copy Number
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic cephalosporins
Assignee: Bristol Myers Co
•
Filing: 1969-01-21
•
Granted: 1972-08-29
•
Expires: 1989-01-21
Overview & Biblio
Claims (18)
Citations (2)
Maintenance Schedule (3)
Categories & Tags (0)
Abstract
Abstract 7-( Alpha -3-Acylureidophenylacetamido)- and 7-( Alpha -3acylureidothienylacetamido)cephalosporanic acids and the corresponding betaines and desacetoxy derivatives are valuable as antibacterial agents, as nutritional supplements in animal feeds and as therapeutic agents in poultry and animals, including man, and are especially useful in the treatment of infectious diseases caused by Gram-positive and Gram-negative bacteria, most particularly those caused by the Pseudomonas genus. 7-(D- Alpha (3-(2''-furoyl)ureido)phenylacetamido)cephalosporanic acid, a preferred embodiment of the invention, is prepared by the treatment of 7-(D- Alpha -amino-phenylacetamido)cephalosporanic acid with 2-furoyl isocyanate.
Inventors
👤 Charles Truman Holdrege
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:07
CPC Classifications
C; C07; C07D; C07D501/00; C07D501/14; C07D501/16; C07D501/20
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
5 words
A compound of the formula
Claim 2
Dependent Claim
11 words
A compound as defined in claim 2 wherein A is acetoxy.
Claim 3
Dependent Claim
11 words
A compound as defined in claim 2 wherein A is hydrogen.
Claim 4
Dependent Claim
11 words
A compound as defined in claim 2 wherein A is pyridinium.
Claim 5
Dependent Claim
20 words
A compound as defined in claim 2 wherein A is acetoxy and Z is phenyl, 2-thienyl, 3-thienyl, 2-furyl or 5-nitro-2-furyl.
Claim 6
Dependent Claim
20 words
A compound as defined in claim 2 wherein A is hydrogen and Z is phenyl, 2-thienyl, 3-thienyl, 2-furyl or 5-nitro-2-furyl.
Claim 7
Dependent Claim
20 words
A compound as defined in claim 2 wherein A is pyridinium and Z is phenyl, 2-thienyl, 3-thienyl, 2-furyl or 5-nitro-2-furyl.
Claim 8
Dependent Claim
11 words
A compound as defined in claim 6 in the D configuration.
Claim 9
Dependent Claim
11 words
A compound as defined in claim 7 in the D configuration.
Claim 10
Dependent Claim
11 words
A compound as defined in claim 8 in the D configuration.
Claim 11
Dependent Claim
10 words
The acid as defined in claim 9 of the formula
Claim 12
Dependent Claim
10 words
The acid as defined in claim 10 of the formula
Claim 13
Dependent Claim
10 words
The acid as defined in claim 9 of the formula
Claim 14
Dependent Claim
10 words
The compound as defined in claim 11 of the formula
Claim 15
Dependent Claim
10 words
The acid as defined in claim 9 of the formula
Claim 16
Dependent Claim
10 words
The compound as defined in claim 11 of the formula
Claim 17
Dependent Claim
10 words
The acid as defined in claim 9 of the formula
Claim 18
Dependent Claim
10 words
The compound as defined in claim 11 of the formula
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) 1975-08-29
1976-02-28 1976-08-29
$2000.00
Window Closed / Lapsed
7.5 Years (Year 8) 1979-08-29
1980-02-28 1980-08-29
$3760.00
Window Closed / Lapsed
11.5 Years (Year 12) 1983-08-29
1984-02-28 1984-08-29
$7700.00
Window Closed / Lapsed