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US 4,908,443 AGranted
7-Beta-substituted 3-lower alkanoylacetoxy-methyl-7-alpha-methoxy-3-cephem-4-carboxylic acid
AssigneeYamanouchi Pharmaceutical Co., Ltd.
InventorsMasami Abe, Hideo Eiki
Life of this patent
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Abstract
Novel cephem compounds are provided which are useful for synthesizing cephamycin compounds useful as antibacterial agents. The novel compounds have the formula (I): ##STR1## wherein R.sup.1 represents a lower alkyl group and R.sup.2 represents an amino group which may be protected, in the salt thereof.
Claims1
7.beta.-substituted-3-lower alkanoylacetoxymethyl-7.alpha.-methoxy-3-cephem-4-carboxylic acid represented by formula (I):
- ##STR11## wherein R.sup.1 represents a lower alkyl group and R.sup.2 represents an amino group which may be protected by an aromatic acyl group or an arylcarbamoyl group or a salt thereof selected from the group consisting of alkali metal salts, alkaline earth metal salts and organic amine salts.
Dependencies are inferred from the claim text.