申请人:Takeda Chemical Industries, Ltd.
公开号:EP0052959A1
公开(公告)日:1982-06-02
Improved processes for producing purine derivatives, such as 9-(2-chloro-6-fluorobenzyl)-6-methylaminopurine, which are useful as anticoccidial agents, and new arylazopyrimidine compounds of the formula:
wherein R1 and R2 each is hydrogen, C1-3 alkyl, allyl or dihalobenzyl, and when either one of R1 and R2 is hydrogen, the other is other than hydrogen, and R3 is aryl, and acid addition salts thereof, which are useful as intermediates for production of the purine derivatives.
生产嘌呤衍生物(如 9-(2-氯-6-氟苄基)-6-甲基氨基嘌呤)的改进工艺,这些衍生物可用作抗球虫药,以及新的芳基氮嘧啶化合物,其式如下:其中 R1 和 R2 各为氢、C1-3 烷基、烯丙基或二卤代苄基,当 R1 和 R2 中的任何一个为氢时,另一个为氢以外的其它基,R3 为芳基,以及其酸加成盐,这些化合物可用作生产嘌呤衍生物的中间体。