Cephalosporin compounds

Details Cephalosporin compounds Cephalosporin compounds

1990-04-19

1991-05-07

Rizzo, Nicholas S.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Heterocyclic carbon compounds containing a hetero ring...

514201, 540222, 540226, 540227, 540230, C07D50118, A61K 31545

Patent

active

050137310

ABSTRACT:
A cephalosporin derivative of the formula I: ##STR1## in which X is S, O, CH.sub.2 or SO, ##STR2## represents one of the C-7 acyl groups known in the cephalosporin art, R3 is hydrogen or methoxy, R4 is hydrogen, optionally substituted alkyl, allyl, furfuryl or benzyl, and R5 is an aromatic heterocyclic ring system which is linked via carbon, and which contains a quaternized nitrogen atom.

REFERENCES:
patent: 4024133 (1977-05-01), Cook
patent: 4033950 (1977-07-01), Cook
patent: 4138555 (1979-02-01), Cook
patent: 4252802 (1981-02-01), Denzel
patent: 4278793 (1981-07-01), Durckheimer
patent: 4439433 (1984-03-01), Heymes
patent: 4474779 (1984-10-01), Nagano
patent: 4647556 (1987-03-01), Lattrell
patent: 4678781 (1987-07-01), Jung

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