PROCESS FOR PRODUCING 2-AMINO-2-[2-[4-(3-BENZYLOXYPHENYLTHIO)-2-CHLOROPHENYL[ETHYL]-1,3-PROPANEDIOL HYDROCHLORIDE OR HYDRATE THEREOF AND INTERMEDIATE FOR THE SAME
申请人:KYORIN PHARMACEUTICAL CO., LTD.
公开号:EP1806338A1
公开(公告)日:2007-07-11
A process for the industrial production of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol hydrochloride (Compound I), an effective immunosuppressant.
The process for producing 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol hydrochloride or a hydrate thereof includes the steps of reacting 4-(3-benzyloxyphenylthio)-2-chlorobenzaldehyde with ethyl diethylphosphonoacetate in a solvent in the presence of a base to form ethyl 3-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]acrylate; reducing the resulting ethyl 3-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]acrylate, followed by mesylation, iodination and nitration, to form 1-benzyloxy-3-[3-chloro-4-(3-nitropropyl)phenylthio]benzene; forming 2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-2-nitro-1,3-propanediol using a formaldehyde solution; and reducing the resulting 2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-2-nitro-1,3-propanediol to form the desired product.
一种工业化生产有效免疫抑制剂 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(化合物 I)的工艺。
生产 2-氨基-2-[2-[4-(3-苄氧基苯硫基)-2-氯苯基]乙基]-1,3-丙二醇盐酸盐或其水合物的工艺包括以下步骤:在碱存在下,将 4-(3-苄氧基苯硫基)-2-氯苯甲醛与二乙基膦酰基乙酸乙酯在溶剂中反应,生成 3-[4-(3-苄氧基苯硫基)-2-氯苯基]丙烯酸乙酯;还原生成的 3-[4-(3-苄氧基苯硫基)-2-氯苯基]丙烯酸乙酯,然后进行甲磺化、碘化和硝化,生成 1-苄氧基-3-[3-氯-4-(3-硝丙基)苯硫基]苯;用甲醛溶液形成 2-[2-[4-(3-苄氧基苯硫基)-2-氯苯基]乙基]-2-硝基-1,3-丙二醇;并还原生成的 2-[2-[4-(3-苄氧基苯硫基)-2-氯苯基]乙基]-2-硝基-1,3-丙二醇,形成所需的产品。