Cephalosporin derivatives
First Claim
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1. A crystalline optically active compound of S-configuration of the structural formula I:
- ##STR11## or its pharmaceutically acceptable salt or ester.
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Abstract
The present invention relates to a compound represented by the structural formula I: ##STR1## its pharmaceutically acceptable salt or ester, or its crystalline, which is a novel optically active compound useful as a curing agent for bacterial infections, a process for production thereof and a use thereof.
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7 Claims
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1. A crystalline optically active compound of S-configuration of the structural formula I:
- ##STR11## or its pharmaceutically acceptable salt or ester.
- View Dependent Claims (2)
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3. A crystalline optically active compound of S-configuration which is 7-[(Z)-2-(2-aminothiazol-4-yl)-2-[[(S)-α
- -carboxy-3,4-dihydroxybenzyl]oxyimino]acetamido]-3-[(1-carboxylatomethyl-4-pyridinio)thiomethyl]-3-cephem-4-carboxylic acid, its pharmaceutically acceptable salt or ester, or its solvate.
- View Dependent Claims (4, 5, 6, 7)
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