A method for preparing voriconazole L-camphorsulphonate and voriconazole. The method for preparing voriconazole L-camphorsulphonate comprises: method 1: dissolving (2R,3S)/(2S,3R) isomer mixture and L-camphor sulphonic acid in water and acetone, and performing crystallisation filtration to obtain voriconazole L-camphorsulphonate; method 2: (a) dissolving a mixture of isomer mixture and L-camphor sulphonic acid in a first solvent and then performing crystallisation filtration; or (a') dissolving L-camphorsulphonate of the isomer mixture in a first solvent and then performing crystallisation filtration; (b) concentrating the filtrate obtained in step (a) or (a') into a solid; and (c) dissolving the solid obtained in step (b) in a second solvent and performing crystallisation filtration to obtain voriconazole L-camphorsulphonate. Adjusting the resolution solvent effectively reduces production costs and facilitates recycling of the resolution solvent.
一种制备
伏立康唑 L-
樟脑磺酸盐和
伏立康唑的方法。制备
伏立康唑 L-
樟脑磺酸盐的方法包括:方法 1:将(2R,3S)/(2S,3R)异构体混合物和 L-
樟脑磺酸溶于
水和
丙酮中,进行结晶过滤,得到
伏立康唑 L-
樟脑磺酸盐;方法 2:(a) 将异构体混合物和 L-
樟脑磺酸的混合物溶解在第一种溶剂中,然后进行结晶过滤;或 (a') 将异构体混合物的 L-
樟脑磺酸盐溶解在第一种溶剂中,然后进行结晶过滤;(b) 将步骤(a)或(a')中得到的滤液浓缩成固体;以及 (c) 将步骤(b)中得到的固体溶解在第二种溶剂中,然后进行结晶过滤,得到
伏立康唑 L-
樟脑磺酸盐。调整溶解溶剂可有效降低生产成本,并有利于溶解溶剂的回收利用。