Synthetic studies towards isomeric pyrazolopyrimidines as potential ATP synthesis inhibitors of Mycobacterium tuberculosis. Structural correction of reported N-(6-(2-(dimethylamino)ethoxy)-5-fluoropyridin-3-yl)-2-(4-fluorophenyl)-5-(trifluoromethyl)pyrazolo[1,5-α]pyrimidin-7-amine
作者:Peter J. Choi、Guo-Liang Lu、Hamish S. Sutherland、Anna C. Giddens、Scott G. Franzblau、Christopher B. Cooper、William A. Denny、Brian D. Palmer
DOI:10.1016/j.tetlet.2021.153611
日期:2022.2
During our studies into preparing analogues of pyrazolopyrimidine as ATP synthesis inhibitors of Mycobacterium tuberculosis, a regiospecific condensation reaction between ethyl 4,4,4-trifluoroacetoacetate and 3-(4-fluorophenyl)-1H-pyrazol-5-amine was observed which was dependent on the specific reaction conditions employed. This work identifies optimized reaction conditions to access either the pyrazolo[3
在我们制备吡唑并嘧啶类似物作为结核分枝杆菌ATP 合成抑制剂的研究过程中,观察到 4,4,4-三氟乙酰乙酸乙酯和 3-(4-氟苯基)-1 H-吡唑-5-胺之间的区域特异性缩合反应。取决于所采用的具体反应条件。这项工作确定了获得吡唑并[3,4- β ]吡啶或吡唑并[1,5 -α ]嘧啶支架的优化反应条件。这导致了先前报道的吡唑并嘧啶17b的结构确认,其被报道为吡唑并[1,5 -α ]嘧啶结构2,其被校正为吡唑并[3,4-β ]-嘧啶19.