Structure−Activity Relationships of Antitubercular Nitroimidazoles. 2. Determinants of Aerobic Activity and Quantitative Structure−Activity Relationships
作者:Pilho Kim、Sunhee Kang、Helena I. Boshoff、Jan Jiricek、Margaret Collins、Ramandeep Singh、Ujjini H. Manjunatha、Pornwaratt Niyomrattanakit、Liang Zhang、Michael Goodwin、Thomas Dick、Thomas H. Keller、Cynthia S. Dowd、Clifton E. Barry
DOI:10.1021/jm801374t
日期:2009.3.12
The (S)-2-nitro-6-substituted 6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazines have been extensively explored for their potential use as new antituberculars based on their excellent bactericidal properties on aerobic whole cells of Mycobacterium tuberculosis. An oxygen atom at the 2-position of the imidazole ring is required for aerobic activity. Here, we show that substitution of this oxygen by either nitrogen
( S )-2-硝基-6-取代的6,7-二氢-5 H-咪唑并[2,1- b ][1,3]恶嗪类化合物由于其优异的性能而被广泛探索作为新型抗结核药物的潜在用途。结核分枝杆菌需氧全细胞的杀菌特性. 有氧活性需要咪唑环 2-位上的氧原子。在这里,我们表明用氮或硫取代这种氧会产生等效的类似物。酰化氨基系列、氧化硫醚或用碳取代醚氧显着降低了化合物的效力。用氮替换 6 位的苄氧稍微提高了效力,并促进了对更易溶的 6-氨基系列中 SAR 的探索。通过在 6-( S ) 位置和末端疏水性芳族取代基之间扩展接头区域,实现了效力的显着改进。一个简单的四特征 QSAR 模型被推导出来合理化这一系列双环硝基咪唑的 MIC 结果。