Metallic salt of N4-acylcytidine derivatives, and a method for producing N4-acylcytidine derivatives using the same
申请人:Umetani Hideki
公开号:US20050192433A1
公开(公告)日:2005-09-01
The present invention provides a method for producing a high purity N
4
-acylcytidine derivative. More specially, the invention provides a compound represented by the formula (1):
wherein R1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, a perfluoroalkyl group having 1 to 4 carbon atoms, or a halogen atom; R2 is a hydrogen atom, an alkoxyl group having 1 to 4 carbon atoms, an alkoxyl group having 1 to 4 carbon atoms with a substituent, or a halogen atom; R3 represents a methyl group or a phenyl group; and M represents a positive ion of an alkali metal or an alkaline earth metal, and a compound represented by the formula (2):
wherein R1, R2, and R3 are as defined above, produced by using the compound represented by the formula (1).
本发明提供了一种制备高纯度N4-酰基胞苷衍生物的方法。更具体地,本发明提供了一种由以下式表示的化合物:其中R1代表氢原子、具有1至4个碳原子的烷基基团、具有2至4个碳原子的烯基基团、具有2至4个碳原子的炔基基团、具有1至4个碳原子的全氟烷基基团或卤原子;R2是氢原子、具有1至4个碳原子的烷氧基基团、具有1至4个碳原子的带有取代基的烷氧基基团或卤原子;R3代表甲基基团或苯基团;M代表碱金属或碱土金属的正离子,以及由使用上述式(1)表示的化合物制备的以下式(2)表示的化合物:其中R1、R2和R3如上所定义。