Cephalosporin derivatives

Details Cephalosporin derivatives Cephalosporin derivatives

C - Chemistry, Metallurgy

07

D

167/187, 260/104

C07D 501/36 (2006.01) C07C 239/18 (2006.01) C07D 209/48 (2006.01) C07D 277/20 (2006.01) C07D 417/12 (2006.01) C07D 501/46 (2006.01) C07D 519/00 (2006.01)

Patent

CA 1300125

ABSTRACT OF THE DISCLOSURE The present invention relates to processes for producing novel cephalosporin derivatives, novel cephalosporin derivatives prepared by said processes, processes for producing intermediate compounds in the synthesis of cephalosporin and the intermediate compounds prepared by said processes. The novel cephalosporin derivatives prepared by the processes according to the present invention, contain condensed heterocyclic groups, particularly a triazolopyrimidine ring or a thiadiazolopyrimidine ring, as substituents at the 3-position of the cephem skeleton, and of groups containing a catechol moiety, particularly a catechol carboxymethyloxyimino moiety or a catechol carboxyimino moiety, as substituents at the 7-position of the cephem skeleton. The compounds prepared by the processes of the present invention containing the aforementioned substituents have a strong antibacterial activity against Gram-negative bacteria and also against Gram- positive bacteria including methicillin-resistant Staphylococcus aureus. These compounds are extremely useful for the treatment of infectious diseases.

505385

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