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US 4,068,073 AGranted
7-Amino intermediates for preparing 7-acyl-3-(ureidoalkyl substituted tetrazolylthiomethyl)-cephalosporins
AssigneeSmithKline Corporation
InventorDavid A. Berges
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Abstract
The compounds of this invention are cephalosporins having various acyl substituents at the 7-position and an ureidoalkyl substituted tetrazolylthiomethyl group at the 3-position of the cephem nucleus and intermediates for the preparation thereof. The 7-acylated compounds have antibacterial activity.
Claims4
A compound of the formula:
- ##STR8## in which:
- n is two to five;
- and
- R.sup.2 is hydrogen or a protecting ester group.
1 more element
Dependencies are inferred from the claim text.