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US 4,225,707 AGranted
2-Lower alkyl-7-substituted-2 or 3-cephem-4-carboxylic acid compounds
AssigneeFujisawa Pharmaceutical Co., Ltd.
InventorsTakashi Kamiya, Takao Takaya
Life of this patent
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Abstract
A compound of the formula: ##STR1## wherein R.sup.1 is lower alkyl, R.sup.2 is carboxy or a protected carboxy group, R.sup.4 is hydrogen or lower alkyl and Y is a residue of an acid, or a salt.
Claims4
A compound of the formula:
- ##STR11## wherein R.sup.1 is lower alkyl,
- R.sup.2 is carboxy or a carboxyl group protected by an eliminatable protective group,
- R.sup.4 is hydrogen or lower alkyl and
- Y is halogen, or a salt thereof.
1 more element
Dependencies are inferred from the claim text.