申请人:Siegfried Aktiengesellschaft
公开号:US04223143A1
公开(公告)日:1980-09-16
Novel quinazoline derivatives of the formula (1) ##STR1## wherein ring C is a pyrazole ring fused to ring B in two vicinal positions thereof that are not fused with ring A. The novel formula (1) compounds or pyrazolo-quinazoline-ones are structurally related to allopurinol, a well known drug useful in the treatment of gout and are expected to replace or complement allopurinol in the therapeutic use thereof. The generic name Benzoallopurinol is suggested for the novel formula (1) compounds; formula (1) includes angular and linear structures of the interfused rings A, B and C. Two methods for producing the novel formula (1) compounds are disclosed. The first method starts from the indazole structure that includes the interfused rings B and C, and ring A is formed on the indazole moiety. The second method starts from the quinazoline structure that includes interfused rings A and B, and the pyrazole ring C is formed on the benzo moiety (ring B) of the quinazoline structure. Either method may lead to angular or linear benzoallopurinols depending upon the substituents introduced into the starting structure for forming the complemental ring thereon.
化合物的新式喹唑啉衍生物的化学式(1)如下:##STR1## 其中环C是一个吡唑环,与环B在两个相邻的位置上融合,这些位置没有与环A融合。这些新式化合物或吡唑喹唑啉酮与艾洛普酮有结构上的关联,艾洛普酮是一种治疗痛风的知名药物,预计可以替代或补充艾洛普酮在治疗中的使用。建议将这些新式化合物命名为苯并艾洛普酮,化学式(1)包括相互融合的环A、B和C的角状和线性结构。公开了两种制备这些新式化合物的方法。第一种方法从包括相互融合的环B和C的吲哚唑结构开始,环A在吲哚唑基团上形成。第二种方法从包括相互融合的环A和B的喹唑啉结构开始,吡唑环C在喹唑啉结构的苯基团(环B)上形成。无论哪种方法,都可能导致角状或线性苯并艾洛普酮,具体取决于引入到起始结构中形成互补环的取代基。