[EN] PROCESS FOR PREPARING FLUCONAZOLE AND ITS CRYSTAL MODIFICATIONS<br/>[FR] METHODE DE PREPARATION DE FLUCONAZOLE ET DE SES MODIFICATIONS CRISTALLINES
申请人:RICHTER GEDEON VEGYESZET
公开号:WO2002076955A1
公开(公告)日:2002-10-03
The invention relates to a process for preparing of fluoconazole of formula (I) and its crystal modifications. The process is as follows; a) hydrolyzing a silyl ether derivative of formula (II) wherein the meaning of R<2> is hydrogen, or a C1-C10 alkyl or phenyl group, R<3> and R<4> independently of each other are a C1-C10alkyl or phenyl group -at a pH preferably either below 3 or above 8 in an aqueous solution, cooling the obtained reaction mixture and isolating the precipitated fluconazole monohydrate, dissolving the fluconazole monohydrate in a C1-C4 straight or branched chain alcohol at boiling temperature and cooling the solution slowly, preferably with a speed of 5-15 DEG C/h to obtain the crystal modification II of fluconazole, or fast, preferably with a speed of 35-65 DEG C/h to obtain the crystal modification I of fluconazole and in both cases isolating the precipitated crystals and rying, or b) dissolving fluconazole monohydrate in C1-C4 straigth or branched chain alcohol at boiling temperature and cooling the solution slowly, preferably with a speed of 5-15 DEG C/h to obtain the crystal modification II of fluconazole, or fast, preferably with a speed of 35-65 DEG C/h to obtain the crystal modification I of fluconazole and in both cases isolating the precipitated crystals and drying, or c) drying slowly fluconazole monohydrate after seeding preferably with seeding crystals of crystal modification II at 30-70 DEG C, preferably in vacuum to obtain the crystal modification II of fluconazole, or d) drying fast fluconazole monohydrate after seeding preferably with seeding crystals of crystal modification I at 80 DEG C, to obtain the crystal modification I of fluconazole.
本发明涉及一种制备式(I)的氟康唑及其晶体修饰的方法。该方法如下:a) 在水溶液中,在pH优选小于3或大于8的条件下,水解式(II)的硅醚衍生物,其中R <2>的含义是氢,或C1-C10烷基或苯基,R <3>和R <4>各自独立地是C1-C10烷基或苯基,冷却得到的反应混合物,并分离沉淀的单水合氟康唑,将单水合氟康唑溶解在C1-C4直链或支链醇中,在沸腾温度下缓慢冷却溶液,优选速度为5-15°C/h,以获得氟康唑的晶体修饰II,或快速冷却,优选速度为35-65°C/h,以获得氟康唑的晶体修饰I,在两种情况下分离沉淀的晶体并干燥,或b) 将单水合氟康唑溶解在C1-C4直链或支链醇中,在沸腾温度下缓慢冷却溶液,优选速度为5-15°C/h,以获得氟康唑的晶体修饰II,或快速冷却,优选速度为35-65°C/h,以获得氟康唑的晶体修饰I,在两种情况下分离沉淀的晶体并干燥,或c) 在30-70°C的条件下,优选在真空下缓慢干燥单水合氟康唑,并使用晶体修饰II的种晶晶体,以获得氟康唑的晶体修饰II,或d) 在80°C的条件下,优选在真空下快速干燥单水合氟康唑,并使用晶体修饰I的种晶晶体,以获得氟康唑的晶体修饰I。