[EN] AQUEOUS DISPERSION COMPRISING STABLE NANOPARTICLES OF A WATER-INSOLUBLE THIAZOLE DERIVATIVE AND EXCIPIENTS LIKE MIDDLE CHAIN TRIGLYCERIDES<br/>[FR] DISPERSION AQUEUSE COMPRENANT DES NANOPARTICULES STABLES D'UN DERIVE DE THIAZOLE INSOLUBLE DANS L'EAU ET DES EXCIPIENTS TELS QUE DES TRIGLYCERIDES A CHAINE MOYENNE
申请人:ASTRAZENECA AB
公开号:WO2004069226A1
公开(公告)日:2004-08-19
A process for the preparation of a stable dispersion of solid particles, in an aqueous medium comprising combining (a) a first solution comprising a substantially water-insoluble substance which is a thiazole compound of Formula I, a water-miscible organic solvent and an inhibitor with (b) an aqueous phase comprising water and optionally a stabiliser, thereby precipitating solid particles comprising the inhibitor and the substantially water-insoluble substance; and optionally removing the water-miscible organic solvent; wherein the inhibitor is a non-polymeric hydrophobic organic compound as defined in the description. Also claimed are stable dispersions obtainable by the process, solid particles obtainable by the process and use of such particles. The process provides a dispersion of solid particles in an aqueous medium, which particles exhibit reduced or substantially no particle growth mediated by Ostwald ripening. The process is particlularly suitable for the preparation of small (sub-micron) aqueous dispersions of a substantially water-insoluble pharmacologically active substance.
一种制备固体颗粒稳定分散液的方法,其中该液体是在水介质中混合(a)第一个溶液,该溶液包括一种公式I的噻唑化合物,它是一种基本上不溶于水的物质,还包括一种水溶性有机溶剂和一种抑制剂,以及(b)一种水相,其中包括水和可选的稳定剂,从而沉淀出包含抑制剂和基本上不溶于水的物质的固体颗粒;可选地去除水溶性有机溶剂;其中抑制剂是根据描述定义的非聚合疏水有机化合物。还声明了通过该过程获得的稳定分散液,通过该过程获得的固体颗粒以及使用这种颗粒。该过程提供了一种固体颗粒在水介质中的分散液,这些颗粒表现出通过奥斯特瓦尔德成核介导的减少或基本上没有颗粒生长。该过程特别适用于制备基本上不溶于水的药理活性物质的小(亚微米)水分散液。