Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1974-11-12
1977-02-08
Rizzo, Nicholas S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
424246, C07D50124
Patent
active
040071766
ABSTRACT:
New cephalosporin derivatives of the formula: ##STR1## wherein one of A and A.sub.1 represents oxygen or sulphur and the other represents sulphur, R.sub.1 represents hydrogen, acetoxy, (5-methyl-1,3,4-thiadiazol-2-yl)thio or (1-methyl-1,2,3,4-tetrazol-5-yl)thio and R.sub.2 represents carboxy, or R.sub.1 represents a pyridinio radical and R.sub.2 represents the carboxylate ion, are therapeutically useful compounds possessing antibacterial properties.
REFERENCES:
patent: 3516997 (1970-06-01), Takano et al.
patent: 3692779 (1972-09-01), Huldrege
patent: 3886151 (1975-05-01), Wei
Berger Christian
Farge Daniel
Gros Georges
Messer Mayer Naoum
Moutonnier Claude
Rhone-Poulenec S.A.
Rizzo Nicholas S.
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