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US 4,305,937 AGranted
2-Lower alkyl-7-substituted-2 or 3-cephem-4-carboxylic acid compounds and antibacterial pharmaceutical compositions containing them
AssigneeFujisawa Pharmaceutical Co., Ltd.
InventorsTakashi Kamiya, Takao Takaya
Life of this patent
Estimating the term…
Abstract
A compound of the formula: ##STR1## wherein R.sup.1 is lower alkyl, R.sup.2 is carboxy or protected carboxy, R.sup.3 is amino or protected amino and R.sup.4 is lower alkyl substituted by halogen or a lower unsaturated aliphatic group, and pharmaceutically acceptable salts thereof.
Claims9
A compound of the formula:
- ##STR11## wherein R.sup.1 is lower alkyl of 1-6 carbon atoms, R.sup.2 is carboxy or protected carboxy, R.sup.3 is amino or protected amino, and R.sup.4 is C.sub.1 -C.sub.6 alkynyl, C.sub.1 -C.sub.6 alkynyl or C.sub.1 -C.sub.6 alkyl having at least one fluorine, chlorine, bromine or iodine substituent and pharmaceutically acceptable salts thereof.
Dependencies are inferred from the claim text.