[EN] PROCESSES FOR THE PREPARATION OF FEBUXOSTAT AND SALTS THEREOF<br/>[FR] PROCÉDÉS POUR LA PRÉPARATION DE FEBUXOSTAT ET DE SELS DE CELUI-CI
申请人:CIPLA LTD
公开号:WO2011073617A1
公开(公告)日:2011-06-23
There is provided a process for preparing febuxostat of formula (I) or a pharmaceutically acceptable salt thereof, the process comprising: condensing a compound of formula (A) with a compound of formula (B) to form an ester of febuxostat; hydrolyzing the ester of febuxostat to febuxostat, and optionally converting the febuxostat to a pharmaceutically acceptable salt thereof, wherein: R' is an activating group selected from boronic acid or lithium; R is selected from optionally substituted C1-4 alkyl or optionally substituted aryl; L is a leaving group selected from diazo, halo, -OSO2R", -OCOR" or -O-Si(R")3; and R" is selected from optionally substituted C1-4 alkyl or optionally substituted aryl.
The invention comprises substituted diazaindole-dicarbonyl-piperazinyl derivatives of general Formula I
wherein:
Q is selected from the group consisting of
— may represent a bond; T is —C(O)— or —CH(CN)—; and
—Y— is selected from the group consisting of
compositions thereof and their use for treating HIV infection.
The development of the organocatalyticasymmetric one-pot Michael-Darzens condensation giving highly functionalized complex epoxycyclohexanone derivatives with up to four chiral centers is presented. Depending on the reaction conditions, either the polysubstituted 7-oxa-bicyclo[4.1.0]heptan-2-one ring system or 2-chloro-cyclohex-2-enone derivatives can be formed. For the former class of compounds a
[EN] 2 -AMINOPYRIMIDINE DERIVATIVES AS HISTAMINE H4 ANTAGONISTS<br/>[FR] DÉRIVÉS DE 2-AMINOPYRIMIDINE COMME ANTAGONISTES DES RÉCEPTEURS H4 DE L'HISTAMINE
申请人:PALAU PHARMA SA
公开号:WO2009077608A1
公开(公告)日:2009-06-25
2-Amino-pyrimidine derivatives of formula I, wherein the meaning of the different substituents are those indicated in the description. These compounds are useful as histamine receptor H4 antagonists.
The invention provides compounds of Formula (I) and Formula (II), pharmaceutically acceptable salts, pro-drugs, biologically active metabolites, stereoisomers and isomers thereof wherein the variable are defined herein. The compounds of the invention are useful for treating immunological and oncological conditions.