PROCESS FOR PREPARING TOLTERODINE OR ITS SALT AND SYNTHETIC INTERMEDIATE
申请人:Estechpharma Co. Ltd.
公开号:EP2016042A1
公开(公告)日:2009-01-21
[EN] PROCESS FOR PREPARING TOLTERODINE OR ITS SALT AND SYNTHETIC INTERMEDIATE<br/>[FR] PROCÉDÉ DE FABRICATION DE TOLTÉRODINE OU DE SES SELS ET INTERMÉDIAIRE SYNTHÉTIQUE
申请人:ESTECHPHARMA CO LTD
公开号:WO2007126217A1
公开(公告)日:2007-11-08
[EN] Provided is a process for preparing tolterodine or its salt, which comprises: (a) reacting 2-[3-(p-nitrobenzenesulfonyloxy)-1-phenylpropyl]-4-methyl-(p-nitrobenzenesulfonyloxy or p-toluenesulfonyloxy)benzene with diisopropylamine to obtain 2-[3-(N,N-diisopropylamino)-1-phenylpropyl]-4-methyl-(p-nitrobenzenesulfonyloxy or p-toluenesulfonyloxy)benzene; and (b) deprotecting 2-[3-(N,N-diisopropylamino)-1-phenylpropyl]-4-methyl-(p-nitrobenzenesulfonyloxy or p-toluenesulfonyloxy)benzene in the presence of a base. [FR] Procédé de fabrication de toltérodine ou de ses sels, consistant: (a) à faire réagir 2-[3-(p-nitrobenzène-sulfonyloxy)-1-phénylpropyl]-4-méthyl-(p-nitrobenzène-sulfonyloxy ou p-toluène-sulfonyloxy)benzène avec diisopropylamine afin d'obtenir 2-[3-(N,N-diisopropylamino)-1-phénylpropyl]-4-méthyl-(p-nitrobenzène-sulfonyloxy ou p-toluène-sulfonyloxy)benzène; et (b) à déprotéger 2-[3-(N,N-diisopropylamino)-1-phénylpropyl]-4-méthyl-(p-nitrobenzène-sulfonyloxy ou p-toluène-sulfonyloxy)benzène en présence d'une base.
WO2007/126217
申请人:——
公开号:——
公开(公告)日:——
Reduction of Ethyl Benzoylacetate and Selective Protection of 2-(3-Hydroxy-1-phenylpropyl)-4-methylphenol: A New and Facile Synthesis of Tolterodine
作者:Kathlia A. De Castro、Jungnam Ko、Daejong Park、Sungdae Park、Hakjune Rhee
DOI:10.1021/op7001134
日期:2007.9.1
A new and facilesynthesis of tolterodine using ethyl benzoylacetate as the starting material was developed. Reduction using sodium borohydride in methanol followed by Friedel–Crafts alkylation utilizing FeCl3·6H2O as catalyst lead to the known 2-(3-hydroxy-1-phenylpropyl)-4-methylphenol intermediate. Consecutive protection of phenolic OH with p-toluenesulfonyl chloride via two-phase reaction and conversion