Process for the conversion of the e-isomer of 6-(substituted...

Details Process for the conversion of the e-isomer of 6-(substituted... Process for the conversion of the e-isomer of 6-(substituted...

C - Chemistry, Metallurgy

07

D

260/111

C07D 499/00 (2006.01) C07D 499/88 (2006.01) C07F 7/10 (2006.01) C07F 7/22 (2006.01)

Patent

CA 1300603

Abstract Novel Process During the preparation of 6-(substituted methylene)-2- penem compounds (which are known for their anti- bacterial and .beta.-lactamase inhibitory properties) mixtures of the E-isomer and the Z-isomer may be formed. The Z-isomer is, however generally preferred, and the present invention provides a process whereby the E-isomer may be converted into the Z-isomer by reaction with an aromatic heterocyclic thiol in the presence of a base.

566571

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