Cephalosporin derivatives, and antibacterial drugs comprising said derivatives
AssigneeEisai Co., Ltd.
InventorsYoshimasa Machida, Isao Saito, Seiichiro Nomoto, Shigeto Negi, Hironori Ikuta, Kyosuke Kitoh
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Abstract
New cephalosporin derivatives having the general formula: ##STR1## wherein R.sub.1 and R.sub.2 each represents hydroxy or acyloxy and their salts, and processes for the production thereof. The cephalosporin derivatives of the present invention are useful as antibacterial drugs.
Claims7
A cephalosporin derivative of the formula ##STR6## wherein R.sub.1 and R.sub.2 each represents hydroxyl, acetoxy, propionyloxy or benzoyloxy or a pharmaceutically acceptable salt thereof.
A compound as claimed in claim 10 wherein R.sub.1 and R.sub.2 occupy 6 and 7 positions or 7 and 8 positions.
An antibacterial composition comprising an antibacterially effective amount of (a) a compound of the formula ##STR7## wherein R.sub.1 and R.sub.2 each represents hydroxy, acetoxy, propionylxy or benzoyloxy or (b) a pharmaceutically acceptable salt thereof and a pharmaceutically acceptable carrier therefor.
Dependencies are inferred from the claim text.