4-(3-benzyloxyphenylthio)-2-chloro-1-(3-nitropropyl)benzene (compound 1) is used as an intermediate for producing a 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-1-,3-propanediol hydrochloride which has excellent immunosuppressive activity. This compound 1 is traditionally obtained only as an oil and thus handling and refining were difficult.
[Solution] A crystal of the compound 1 is obtained. A method of crystallizing the same is also established. Furthermore, a simple refining method is also found which comprises stirring in suspension the crystal in a solvent. Since the compound 1 can be obtained as a crystal, it is easier to handle and long term storage is possible.
4-(3-苄氧基苯
硫基)-2-
氯-1-(
3-硝丙基)苯(化合物 1)用作生产 2-
氨基-2-[2-[4-(3-苄氧基苯
硫基)-2-
氯苯基]乙基]-1-,3-
丙二醇盐酸盐的中间体,这种盐酸盐具有极佳的免疫抑制活性。这种化合物 1 传统上只能以油的形式获得,因此很难处理和提炼。
[解决方案]获得化合物 1 的晶体。还建立了一种使其结晶的方法。此外,还找到了一种简单的提炼方法,包括在溶剂中搅拌悬浮晶体。由于化合物 1 可以以晶体形式获得,因此更易于处理,并且可以长期储存。