[EN] PROCESS FOR OBTAINING RIVAROXABAN AND INTERMEDIATE THEREOF<br/>[FR] PROCÉDÉ PERMETTANT D'OBTENIR DU RIVAROXABAN ET INTERMÉDIAIRE DE CELUI-CI
申请人:INTERQUIM SA
公开号:WO2012159992A1
公开(公告)日:2012-11-29
This invention relates to a procedure for obtaining a thiophene-2-carboxamide compound, specifically rivaroxaban, which comprises the (i) fragmentation of the N=C bond of a compound of formula 23 where R1 is selected among hydrogen, halogen, and (C1-C6)alkyl; and (ii) acylation of the resulting intermediate with 5-chloro-tiofen-2-carbonyl chloride in a solvent medium, in the presence of a base. The invention also relates to the compounds of formula 23 and their use in the obtention of rivaroxaban.
PROCESS FOR OBTAINING RIVAROXABAN AND INTERMEDIATE THEREOF
申请人:Berzosa Rodríguez Xavier
公开号:US20140128601A1
公开(公告)日:2014-05-08
This invention relates to a procedure for obtaining a thiophene-2-carboxamide compound, specifically rivaroxaban, which comprises the (i) fragmentation of the N═C bond of a compound of formula 23 where R1 is selected among hydrogen, halogen, and (C1-C6)alkyl; and (ii) acylation of the resulting intermediate with 5-chloro-tiofen-2-carbonyl chloride in a solvent medium, in the presence of a base. The invention also relates to the compounds of formula 23 and their use in the obtention of rivaroxaban.
[EN] A PROCESS FOR THE PREPARATION OF RIVAROXABAN BASED ON THE USE OF (S)-EPICHLOROHYDRIN<br/>[FR] PROCÉDÉ DE PRÉPARATION DE RIVAROXABAN FONDÉ SUR L'UTILISATION DE (S)-ÉPICHLOROHYDRINE
申请人:ZENTIVA KS
公开号:WO2013120465A1
公开(公告)日:2013-08-22
The invention relates to the stereoisomers of 4-4-[(S/R)-5-[(((aryl)methylene)- amino)methyl]-2-oxo-1,3-oxazolidin-3-yl]phenyl}morpholin-3-ones described by the chemical formulae (S)-(9) and (R)-(9). The optical isomer of compound (9) with the (S)- configuration is industrially applicable for the manufacture of the antithrombotic drug rivaroxaban (1). The new preparation process of rivaroxaban comprises a reaction of (S)-1- chloro-3-(((aryl)methylene)amino)propan-2-ols (S)-(14) with alkyl 4-(3-oxomorpholine-4- yl)phenylcarbamates (15) providing the key intermediate (S)-(9), which is further subjected to hydrolytic deprotection and subsequent acylation, producing rivaroxaban. The commercially available (S)-epichlorohydrin has been conveniently used as the chiral building block for the production of the key intermediate.