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US 4,394,503 AGranted
Cephalosporin derivatives
AssigneeBristol-Myers Company
InventorsHajime Kamachi, Jun Okumura, Takayuki Naito, Masahisa Oka
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Abstract
Potent antibacterial agents of the formula ##STR1## wherein R is methyl, ethyl or isopropyl, and their pharmaceutically acceptable salts, physiologically hydrolyzable esters and solvates, and processes for their preparation, are described.
Claims4
A compound of the formula ##STR49## wherein R is methyl, ethyl or isopropyl, or a pharmaceutically acceptable salt, physiologically hydrolyzable ester or solvate thereof.
Dependencies are inferred from the claim text.