.beta.-lactam antibiotics, processes for their preparation...

Details .beta.-lactam antibiotics, processes for their preparation... .beta.-lactam antibiotics, processes for their preparation...

C - Chemistry, Metallurgy

07

D

260/100, 260/244

C07D 498/04 (2006.01) C07D 261/08 (2006.01) C07D 277/20 (2006.01) C07D 307/54 (2006.01) C07D 333/24 (2006.01) C07D 499/00 (2006.01) C07D 499/70 (2006.01) C07D 501/20 (2006.01)

Patent

CA 1178946

ABSTRACT .beta.-Lactam antibiotics of the formula Image in which A is a hydrogen atom, an optionally substituted alkyl, alkanyl, alkinyl or cycloalkyl group, a substituted or unsubstituted phenyl ring, a polycyclic aromatic ring or an optionally substituted heterocyclic 5-membered or 6-membered ring with 1 to 4 hetero-atoms. Y is Image or Image X is a sulphur or oxygen atom, T is an organic radical, and Z is a hydrogen atom or a C1 to C6 alkoxy group, or an ester or salt thereof.

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