Condensation of aliphatic and aliphatic-aromatic α-diketones, and of substituted benzils with 2,3- and 3,4-diaminobenzoic acids and with 4,5-diamino-2-hydroxybenzoic acid gave 74 5- and 6-quinoxalinecarboxylic acids, with the same or different alkyls and aryls as substituents at position 2 and 3. The compounds with different substituents at positions 2 and 3 were resolved into positional isomers. Their structures were determined by means of the dipole moments. The compounds were tested for tuberculostatic activity. Some exhibited it in vitro (LI, LVII), but failed in vivo.
脂肪族和脂肪族-芳香族α-二酮与2,3-和3,4-二氨基苯甲酸以及4,5-二氨基-2-羟基苯甲酸的缩合反应产生了74种5-和6-喹啉羧酸,位置2和3上的取代基可以是相同的或不同的烷基和芳基。在位置2和3有不同取代基的化合物被分解成位置异构体。它们的结构是通过偶极矩确定的。这些化合物被检测其抗结核活性。一些化合物在体外(LI,LVII)表现出该活性,但在体内失败。