Syn-isomers of 7-substituted-3-cephem-4-carboxylic acid esters

Details Syn-isomers of 7-substituted-3-cephem-4-carboxylic acid esters Syn-isomers of 7-substituted-3-cephem-4-carboxylic acid esters

1982-05-14

1984-07-31

Coughlan, Jr., Paul M.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Bacterium or component thereof or substance produced by said...

544 22, A61K 31545, C07D50120

Patent

active

044630026

ABSTRACT:
This invention relates to novel cephem compounds of high antimicrobial activity comprising the syn-isomers of 7-substituted-3-cephem-4-carboxylic acid esters of the formula: ##STR1## wherein R is lower alkanoyloxy (C.sub.2 -C.sub.6)alkyl, isobutyryloxymethyl, 2-ethylbutyryloxymethyl or 3,3-dimethylbutyryloxymethyl,
or salts thereof.

REFERENCES:
patent: 4278793 (1981-07-01), Durckheimer et al.
patent: 4298529 (1981-11-01), Ueda et al.
patent: 4299829 (1981-11-01), Kamiya et al.
patent: 4368325 (1983-01-01), Ueda et al.

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