The present invention relates to novel derivatives of 3-hydroxyanthranilic acid, 3-HANA, of the general formula I ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and selected from H and alkyl; X is selected from alkylthio, arylthio, aryloxy, halogen and cyano; R.sup.3, R.sup.4 are the same or different and selected from halogen, methyl, fluoroalkyl, cyano and Z--R.sup.5 wherein Z is selected from CH.sub.n, NH.sub.m, O, S, SO.sub.2 and CO wherein n=1 or 2; m=0 or 1 and R.sup.5 is selected from alkyl, aryl and fluoroalkyl; or R.sup.3 and R.sup.4 together form a saturated or unsaturated ring system Y--V--Z wherein Y and Z, independently of each other, are as defined for Z above and V is selected from C.sub.1 -C.sub.3 alkylene or alkenylene, --N.dbd., --N.dbd.N-- and ##STR2## wherein R.sub.7 =H or alkyl; or a pharmaceutically acceptable salt thereof, methods and intermediates for their preparation, novel pharmaceutical compositions and the use thereof for inhibiting the enzyme 3-hydroxy-anthranilate oxygenase, 3-HAO, responsible for the production of the endogenous neurotoxin quinolinic acid, QUIN.
本发明涉及3-羟基
蒽醌酸(3-HANA)的新衍
生物,其一般式为I
其中,R1和R2相同或不同,选自H和烷基;X选自烷基
硫醚,芳基
硫醚,芳氧基,卤素和
氰基;R3,R4相同或不同,选自卤素,甲基,氟烷基,
氰基和Z-R5,其中Z选自CHn,NHm,O,S,SO2和CO,其中n=1或2;m=0或1,R5选自烷基,芳基和氟烷基;或R3和R4共同形成一个饱和或不饱和的环系统Y-V-Z,其中Y和Z独立地定义如上所述,V选自C1-C3烷基或烯基,-N=,-N= N-和
其中,R7=H或烷基;或其药学上可接受的盐,其制备方法和中间体,新的制药组合物以及用于抑制酶3-羟基
蒽醌酸氧化酶(3-HAO)的使用,该酶负责生成内源性神经毒素
喹啉酸(QUIN)。