This invention provides a process for producing 3'-deoxy-3'-fluorothymidine, which comprises allowing 3'-deoxy-3'-fluoro-5'-mesylthymidine (the stating material) to react with an acetylating agent, selected from the group consisting of alkali metal salts of acetic acid, amine salts of acetic acid and ammonium acetate, in an aprotic, ploar solvent to form the 5'-acetyl derivative, and ammonium acetate, in an aprotic, polar sovent to form the 5'-acetyl derivative, and eliminating the 5'-acetyl group from this intermediate, thereby giving the objective 3'-deoxy-3'-fluorothymidine.
According to the process of this invention described above, the 5'-mesyl derivative can be efficiently acetylated, and 3'-deoxy-3'-fluorotymidine can be obtained in a high yield.
本发明提供了一种生产 3'-脱氧-3'-
氟胸苷的工艺,该工艺包括使 3'-脱氧-3'-
氟-5'-甲砜基
胸苷(Stating material)与乙酰化剂反应,乙酰化剂选自
乙酸的碱
金属盐、
乙酸的胺盐和
乙酸铵组成的组、
乙酸的胺盐和
乙酸铵,在非沸腾的极性溶剂中形成 5'-乙酰基衍
生物,和
乙酸铵,在非沸腾的极性溶剂中形成 5'-乙酰基衍
生物,并从该中间体中消除 5'-乙酰基,从而得到目的物 3'-脱氧-3'-
氟胸苷。
根据上述本发明的工艺,5'-甲砜基衍
生物可以被有效地乙酰化,并以高产率获得 3'-脱氧-3'-
氟胸苷。