Penem derivatives

Details Penem derivatives Penem derivatives

C - Chemistry, Metallurgy

07

D

260/111

C07D 499/00 (2006.01) C07D 499/88 (2006.01) C07D 519/00 (2006.01)

Patent

CA 1271742

ABSTRACT There is provided a process for preparing compounds having high antibacterial activity of formula Image wherein R is hydrogen atom or C1-C3 alkyl group optionally substituted from halogen atom or hydroxy group optionally protected, and Q(+) represents a group Image , wherein R1, R2 and R3 are each either: (i) optionally substituted alkyl, aralkyl or aryl radical or (ii) R1 is as defined above under (i) and R2, R3, taken together,represent an optionally substituted or fused heterocyclic radical or (iii) R1, R2, R3, taken together, represent an optionally substituted azonia-bicyclo or tricyclo radical or (iv) R1, R2, R3, taken together, represent an optionally substituted fused pyridinium radical or (v) R1, R2, R3, taken together, represent an optionally sub- stituted pyrazinium, pyrazolium or pyridazinium radical, and the pharmaceutically or veterinarily acceptable salts thereof, by reacting a suitable tertiary amine with a penem or a 2-thiacephem.

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