Novel cephem derivatives

Details Novel cephem derivatives Novel cephem derivatives

C - Chemistry, Metallurgy

07

D

C07D 519/00 (2006.01) A61K 31/545 (2006.01) C07D 501/00 (2006.01)

Patent

CA 2149514

Compounds represented by the following formula (I), that is, cephem derivatives having substituted or unsubstituted imidazo[5,1-b]thiazolium-6-yl as a substituent at the 3-position of the cephem ring: (see above formula) wherein X represents CH or H, R1 represents H, alkyl, alkenyl or the like, and R2, R3, R4 and R5 represent H, alkyl, carbamoyl, amino or the like. The above compounds have excellent antibacterial activity, and useful as medicines for the treatment of various infectious diseases caused by bacteria.

L'invention se rapporte à un composé représenté par la formule générale (I), c'est-à-dire un dérivé de cephem comportant en position 3 du cycle un groupe imidazo[5,1-b]thiazolium-6-yle (non)substitué. Dans cette formule (I), X représente CH ou N; R<1> représente H, alkyle, alcényle, etc.; et R<2>, R<3>, R<4> et R<5> représentent chacun H, alkyle, carbamoyle, amino, etc. Ce composé possède une excellente action antibactérienne et il est utile comme remède contre divers types de microbisme.

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