This invention relates to the novel 1,6-naphthyridine derivatives useful as antidinic and/or cerebral circulation improver, such novel derivatives being represented by the following general formula: ##STR1## (wherein R is a C.sub.2-10 alkyl which may have hydroxyl, lower alkylcarbonyl, lower alkyloxycarbonyl or phenoxy as a substituent; a C.sub.2-10 unsaturated aliphatic hydrocarbon group having unsaturated double bond(s); a phenyl-lower alkyl which may have halogen, lower alkyl, lower alkoxy or lower alkylthio as substituent(s) attached to the phenyl ring; a cinnamyl which may have halogen, nitro, lower alkyl or lower alkoxy as substituent(s) attached to the phenyl ring; propargyl; 1-naphthylmethyl; 2-thenyl; cyclohexenyl; a cycloalkyl-lower alkyl with a 3- to 6-membered ring; 1/2(C.sub.2-4 alkylene); 1/2(butenylene), or diphenylmethyl, and in case two alkoxyl groups are present attached to the phenyl ring, they may be bonded to form a ring) and salt thereof.
本发明涉及一种新型的1,6-
萘啶衍
生物,可用作抗衰老和/或改善脑循环的药物。这种新型衍
生物的一般结构式如下:##STR1##(其中R是C.sub.2-10烷基,可以具有羟基、低碳酰基、低氧代碳酰基或苯氧基作为取代基;C.sub.2-10不饱和脂肪烃基,具有不饱和双键;苯基-低烷基,可以具有卤素、低烷基、低氧代烷基或低
硫代烷基作为苯环的取代基;肉桂基,可以具有卤素、硝基、低烷基或低氧代烷基作为苯环的取代基;
丙炔基;1-
萘甲基;2-
噻吩基;
环己烯基;具有3-至6-成员环的环烷基-低烷基;1/2(C.sub.2-4烷基);1/2(
丁烯基),或二苯甲基,当有两个烷氧基取代基连接到苯环时,它们可以连接形成一个环,并且其盐。