Antibiotic amino acid derivatives of cephalosporins
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 12, 1986
Grant Date -
N/A
app pub date -
Oct 11, 1983
filing date -
Nov 10, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
1. A cephalosporin derivatives of the general formula ##STR1## wherein R.sup.1 is an .alpha.-, .beta.- or .gamma.-amino acid residue (bonded by the ester linkage), which may optionally be substituted by one or two lower alkyl groups at the amino group thereof, R.sup.2 is an 1-alkanoyloxyalkyl, 1-alkoxycarbonyloxyalkyl, phthalidyl or 5-methyl-1,3-dioxolen-2-on-4-ylmethyl group, R.sup.3 is a carbamoyloxymethyl group, which may optionally be substituted by one or two lower alkyl groups, or a heterocyclothiomethyl group, which may optionally be substituted by one or more appropriate substituents, and R.sup.4 is a hydrogen atom or a hydroxy group, or its non-toxic salt are found to be useful as orally administrable antibiotics having broad antimicrobial activities against both gram-positive and gram-negative bacteria.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully