[EN] INTERMEDIATES IN THE SYNTHESIS OF CEPHALOSPORIN COMPOUNDS<br/>[FR] INTERMÉDIAIRES DANS LA SYNTHÈSE DE COMPOSÉS DE CÉPHALOSPORINE
申请人:MERCK SHARP & DOHME
公开号:WO2016025813A1
公开(公告)日:2016-02-18
Described herein are crystalline forms of a compound of formula (ΙΙΓ), including toluene solvates ofT A TD-CLE, as well as processes for the preparation thereof and use thereof in the preparation of cephalosporin compounds such as ceftolozane. Provided herein is a crystalline form of a compound of formula (ΙΙΓ): wherein X is CI, Br, or I; and R1 and R2 are each independently an oxygen protecting group; processes for making the crystalline form, and use of said form in the synthesis of antibacterial cephalosporins such as ceftolozane.
The present invention relates to compounds which are of use in the field of agriculture as herbicides. The invention also relates to compositions comprising said compounds and methods of using said compounds.
We describe herein the synthesis and biological evaluation of a series of novel cephalosporins with potent activity against Pseudomonas aeruginosa. Introduction of various amino groups to the 4-position of a 3-amino-2-methylpyrazole cephalosporin 3-side chain resulted in enhanced MIC values against multiple Pseudomonas aeruginosa strains and ultimately led to the discovery of FR264205 (15) with excellent anti-bacterial activity and weak convulsion effect by direct intracerebroventricular injection assay. (C) 2008 Elsevier Ltd. All rights reserved.