[EN] IMPROVED PROCESSES FOR THE PREPARATION OF LINEZOLID USING NOVEL INTERMEDIATES<br/>[FR] PROCÉDÉS AMÉLIORÉS POUR LA PRÉPARATION DE LINÉZOLIDE PAR UTILISATION DE NOUVEAUX INTERMÉDIAIRES
申请人:SYMED LABS LTD
公开号:WO2014174522A1
公开(公告)日:2014-10-30
Provided herein are improved, commercially viable and industrially advantageous processes for the preparation of Linezolid, in high yield and purity, using novel intermediates. In one aspect, provided herein are efficient, industrially advantageous and environmentally friendly processes for the preparation of linezolid, in high yield and with high purity, using novel intermediates. The processes disclosed herein avoid the tedious and cumbersome procedures of the prior processes, thereby resolving the problems associated with the processes described in the prior art, which is more convenient to operate at lab scale and in commercial scale operations.
The present invention includes a number of novel intermediates such as the (S)-secondary alcohol of formula (VIIIA)
X2—CH2—C*H(OH)—CH2—NH—CO—RN (VIIIA)
and processes for production of pharmacologically useful oxazolidinones.
The present invention includes a number of novel intermediates such as the (S)-secondary alcohol of formula (VIIIA) X.sub.2 --CH.sub.2 --C*H(OH)--CH.sub.2 --NH--CO--R.sub.N (VIIIA) and processes for production of pharmacologically useful oxazolidinones.
The Synthesis of <i>N</i>-Aryl-5(<i>S</i>)-aminomethyl-2-oxazolidinone Antibacterials and Derivatives in One Step from Aryl Carbamates
作者:William R. Perrault、Bruce A. Pearlman、Delara B. Godrej、Azhwarsamy Jeganathan、Koji Yamagata、Jiong J. Chen、Cuong V. Lu、Paul M. Herrinton、Robert C. Gadwood、Lai Chan、Mark A. Lyster、Mark T. Maloney、Jeffery A. Moeslein、Meredith L. Greene、Michael R. Barbachyn
DOI:10.1021/op034028h
日期:2003.7.1
for the preparation of linezolid in particular, a more convergent and versatile synthesis was developed for the rapid preparation of numerous other oxazolidinone analogues. Toward this end, economical methods for the large-scale preparation of N-[(2S)-2-(acetyloxy)-3-chloropropyl]acetamide 3 and tert-butyl [(2S)-3-chloro-2-hydroxypropyl]carbamate 27 from commercially available (S)-epichlorohydrin via
LINEZOLID INTERMEDIATE AND METHOD FOR SYNTHESIZING LINEZOLID
申请人:Jiang Xiaoyue
公开号:US20140024827A1
公开(公告)日:2014-01-23
Provided are a linezolid intermediate and the preparation method thereof and a method for synthesizing linezolid. The structure of the intermediate is shown as formula F2, wherein the compound is prepared by a condensation reaction of (S)—N—(3-chloro-2-hydroxy-1-propyl) acetamide and the compound shown in formula F4. In the preparation methods of the compound shown in formula F2 and linezolid, the reaction system is mild, side reactions are few and the product yield is high.