Process for the preparation of 7-(2-amino-2-...

Details Process for the preparation of 7-(2-amino-2-... Process for the preparation of 7-(2-amino-2-...

C - Chemistry, Metallurgy

07

D

260/104.5

C07D 501/36 (2006.01) A61K 31/545 (2006.01) C07D 501/04 (2006.01)

Patent

CA 1199321

ABSTRACT OF THE DISCLOSURE Improved process for the preparation of 7-(2- amino-2-phenyl-acetamido)cephem derivatives of the general formula (I): Image wherein R1 is a hydrogen atom or hydroxyl group, n stands for 0, 1 or 2, and A denotes a nitrogen-containing hetero- cyclic group or a direct bond coupling directly the sulfur atom and the -(CH2)nCOOH group together, as well as pharmaceutically acceptable salts thereof. The process is not only simple and easy to carry out, but also provides as crystalline precipitate the intended products with a high yield. The 7-(2-amino-2-phenyl-acetamido)cephem derivatives are useful as intermediates for syntheses of antibacterial agents.

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