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.
化合物的新型喹唑啉衍生物公式(1)## STR1 ##其中环C是一个吡唑环,在其中的两个邻位位置与环A不融合,与环B融合。新型公式(1)化合物或吡唑并喹唑啉酮与已知药物丙戊酸,结构上相关,可用于痛风治疗,预计将替代或补充丙戊酸的治疗用途。建议为新型公式(1)化合物命名为苯丙戊酸。公式(1)包括相互融合的环A,B和C的角和线性结构。公开了两种生产新型公式(1)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。任一方法可能导致角或线性苯丙戊酸,具体取决于引入用于形成补充环的起始结构的取代基。