Summary
Method of producing 2'-deoxy-5-azacytidine (Decitabine) by providing a compound of formula (I):
wherein
R is a removable substituent known per se; and R1 is a glycoside donor preferably a 1-halogen derivative, an imidate preferably the trichloromethyl derivative, or a thio-alkyl derivative; further providing a silylated
base of formula (II):
wherein R2 is a protecting group, preferably a trimethylsilyl TMS)-residue; reacting the compound of formula (I) and the compound of formula (II) together in a suitable anhydrous solvent and in the presence of a suitable catalyst; and removing the substituents R from the compound obtained in order to obtain the compound 2'-deoxy-5-azacytidine (Decitabine), characterized in that said catalyst is selected from the group comprising a salt of an aliphatic sulphonic acid and/or the salt of a optionally substituted aromatic sulphonic acid.
通过提供具有以下式(I)的化合物来生产2'-脱氧-
5-氮杂胞苷(Decitabine)的方法:
其中R是已知的可移除取代基;而R1是一种糖苷供体,最好是1-卤代衍
生物,一种
亚胺酯,最好是三
氯甲基衍
生物,或者一种
硫代烷基衍
生物;进一步提供具有以下式(II)的
硅化碱:
其中R2是一种保护基,最好是三甲基
硅基(TMS)残基;在适当的无
水溶剂和适当催化剂的存在下,将式(I)的化合物和式(II)的化合物一起反应;并去除所得化合物中的取代基以获得2'-脱氧-
5-氮杂胞苷(Decitabine),其特征在于所述催化剂选自包括脂肪
磺酸盐和/或可选择地取代的芳香
磺酸盐的群组。