申请人:May & Baker Limited
公开号:US04167568A1
公开(公告)日:1979-09-11
8-Azapurin-6-one derivatives of the formula: ##STR1## wherein R.sup.8 represents alkoxy of from 1 to 6 carbon atoms, and R.sup.9 represents cyano, or a group of the formula V, VI, VII, VIII or IX indicated below: ##STR2## wherein R.sup.10, R.sub.13 and R.sup.14 each represents cyano, or alkanoyl or alkoxycarbonyl of from 2 to 6 carbon atoms, R.sup.11 represents hydrogen, cyano, or alkanoyl or alkoxycarbonyl of from 2 to 6 carbon atoms, R.sup.12 represents hydrogen or, when R.sup.11 represents hydrogen, R.sup.12 represents alkyl of from 1 to 6 carbon atoms or alkoxycarbonyl of from 2 to 6 carbon atoms, or the pair of symbols R.sup.11 and R.sup.12 form together an alkylene chain of the formula --(C.sub.q H.sub.2q)-- wherein q is an integer from 3 to 6, R.sup.15 and R.sup.16 each represents hydrogen or alkyl of from 1 to 6 carbon atoms, and Y.sup.1 represents oxygen or sulphur, are new compounds possessing pharmacological properties, in particular properties of value in the treatment of respiratory disorders such as allergic bronchial asthma.
8-吡啶嘧啶-6-酮衍生物的结构式:其中R.sup.8代表1至6个碳原子的烷氧基,R.sup.9代表氰基,或下面所示的V、VI、VII、VIII或IX的基团:其中R.sup.10、R.sub.13和R.sup.14各自代表氰基,或2至6个碳原子的烷酰基或烷氧羰基,R.sup.11代表氢,氰基,或2至6个碳原子的烷酰基或烷氧羰基,R.sup.12代表氢,或当R.sup.11代表氢时,R.sup.12代表1至6个碳原子的烷基或2至6个碳原子的烷氧羰基,或符号R.sup.11和R.sup.12共同形成一个式为--(C.sub.q H.sub.2q)--的烷基链,其中q为3至6的整数,R.sup.15和R.sup.16各自代表氢或1至6个碳原子的烷基,Y.sup.1代表氧或硫,是具有药理学性质的新化合物,特别是在治疗过敏性支气管哮喘等呼吸系统疾病中具有价值的性质。