Revisiting tubercidin against kinetoplastid parasites: Aromatic substitutions at position 7 improve activity and reduce toxicity
作者:Fabian Hulpia、Gustavo Daniel Campagnaro、Mirko Scortichini、Kristof Van Hecke、Louis Maes、Harry P. de Koning、Guy Caljon、Serge Van Calenbergh
DOI:10.1016/j.ejmech.2018.12.050
日期:2019.2
The nucleoside antibiotic tubercidin displays strong activity against different target organisms, but it is notoriously toxic to mammalian cells. The effects of tubercidin against T. brucei parasites inspired us to synthesize several C7 substituted analogs for in vitro evaluation in order to find suitable hit compounds. C7 Deazaadenosines substituted with electron-poor phenyl groups were found to have
核苷类抗生素结核菌素对不同的目标生物体显示出强大的活性,但众所周知,它对哺乳动物细胞具有毒性。对结核菌素的效果布氏锥虫寄生虫启发我们合成了数C7取代的类似物在体外评估,以便找到合适的命中化合物。发现C7脱电子基苯基取代的Deazaadenosines在体外具有对抗T. brucei的微摩尔活性。取代吡啶环的苯基得到化合物13,与结核菌素相比,具有亚微摩尔效价和大大减弱的细胞毒性。兽医病原体T. congolense同样受到体外13种 病毒的影响。T中的转运蛋白研究。brucei指出,P1和P2腺苷转运蛋白均能有效吸收13,这使得与二am胺药物(如乙酸二咪唑和喷他idine)以及三聚氰胺苯基砷化物不太可能发生与转运蛋白有关的耐药性和交叉耐药性。对类似物13的体外代谢稳定性的评估表明,该类似物在小鼠微粒体级分中被显着代谢,从而排除了在HAT的小鼠模型中的进一步体内评估。