2,4-Diamino-5-benzylpyrimidines and analogs as antibacterial agents. 10. 2,4-Diamino-5-(6-quinolylmethyl)- and -[(tetrahydro-6-quinolyl)methyl]pyrimidine derivatives. Further specificity studies
作者:Barbara S. Rauckman、Mary Y. Tidwell、Jay V. Johnson、Barbara Roth
DOI:10.1021/jm00128a040
日期:1989.8
A series of 18 2,4-diamino-5-[(1,2,3,4-tetrahydro-6-quinolyl)methyl]pyrimidines has been prepared by the condensation of 2,4-diamino-5-(hydroxymethyl)pyrimidine with 1,2,3,4-tetrahydroquinolines in acidic medium. Several derivatives were catalytically aromatized; others were synthesized from these by routine aromatic substitution or by condensations of (anilinomethyl)pyrimidines to give quinolinylmethyl
通过缩合2,4-二氨基-5-(羟甲基)嘧啶制备了一系列18个2,4-二氨基-5-[(1,2,3,4-四氢-6-喹啉基)甲基]嘧啶与1,2,3,4-四氢喹啉在酸性介质中。几种衍生物被催化芳构化;通过常规的芳族取代或通过(苯胺基甲基)嘧啶的缩合,由它们合成其他化合物,得到喹啉基甲基类似物。具有4-甲基-8-甲氧基取代的化合物在结构上与甲氧苄氨嘧啶(1a)密切相关,并且是细菌二氢叶酸还原酶的优异抑制剂,其活性至少相当于1a。刚性芳族系列获得了最高的抑制程度,但四氢喹啉衍生物之间实现了更高的特异性。这与4-甲基-8-甲氧基衍生物的N-1取代直接相关。N-1周围的空间关系和该位置的质子化都可能影响选择性。这些化合物还具有优异的广谱体外抗菌活性。