Asymmetric Syntheses via Heterocyclic Intermediates; XVII1. Enantioselective Synthesis of (R)-α-Methyl-S-benzylcysteine Methyl Ester and (R)-α-Methyl-S-t-butylcysteine Methyl Ester Using L-Valine as Chiral Auxiliary Reagent
Novel crystal modifications of (5S)-5-[4-(5-chloro-pyridin-2-yloxy)-piperidine-1-sulfonylmethyl]-5-methyl-imidazolidine-2,4-dione are disclosed together with processes for preparing such modifications, pharmaceutical compositions comprising such a modification, and the use of such a modification in therapy.
[EN] NOVEL CRYSTAL MODIFICATIONS<br/>[FR] NOUVELLES FORMES CRISTALLINES
申请人:ASTRAZENECA AB
公开号:WO2007106022A2
公开(公告)日:2007-09-20
[EN] Novel crystal modifications of (5S)-5-[4-(5-chloro-pyridin-2-yloxy)-piperidine-1-sulfonylmethyl]-5-methyl-imidazolidine-2,4-dione are disclosed together with processes for preparing such modifications, pharmaceutical compositions comprising such a modification, and the use of such a modification in therapy. [FR] La présente invention concerne de nouvelles formes cristallines de la (5S)-5-[4-(5-chloro-pyridin-2-yloxy)-pipéridine-1-sulfonylméthyl]-5-méthyl-imidazolidine-2,4-dione ainsi que des procédés de synthèse de telles formes, des compositions pharmaceutiques les incluant et leurs applications en thérapie.
Asymmetric Syntheses via Heterocyclic Intermediates; XVII<sup>1</sup>. Enantioselective Synthesis of (<i>R</i>)-α-Methyl-<i>S</i>-benzylcysteine Methyl Ester and (<i>R</i>)-α-Methyl-<i>S</i>-<i>t</i>-butylcysteine Methyl Ester Using L-Valine as Chiral Auxiliary Reagent