This work describes the synthesis, enzymatic activities on PI3K and mTOR, in silico docking and cellular activities of various uncommon 2,4,7 trisubstituted pyrido[3,2-d]pyrimidines. The series synthesized offers a chemical diversity in C-7 whereas C-2 (3-hydroxyphenyl) and C-4 groups (morpholine) remain unchanged, in order to provide a better understanding of the molecular determinants of PI3K selectivity or dual activity on PI3K and mTOR. Some C-7 substituents were shown to improve the efficiency on kinases compared to the 2,4-di-substituted pyrimidopyrimidine derivatives used as references. Six novel derivatives possess IC50 values on PI3Kα between 3 and 10 nM. The compounds with the best efficiencies on PI3K and mTOR induced micromolar cytotoxicity on cancer cell lines possessing an overactivated PI3K pathway.
这项工作描述了合成、酶活性对PI3K和mTOR的影响、计算机辅助对接和各种不常见的2,4,7-三取代吡啶并[3,2-d]嘧啶的细胞活性。合成的系列在C-7上提供了化学多样性,而C-2(3-羟基苯基)和C-4基团(吗啉)保持不变,以便更好地理解PI3K选择性或在PI3K和mTOR上的双重活性的分子决定因素。一些C-7取代基显示出与用作参考的2,4-二取代嘧啶嘧啶衍生物相比,在激酶上的效率有所提高。六种新的衍生物在PI3Kα上具有IC50值介于3和10纳摩尔之间。在PI3K和mTOR上效率最高的化合物对患有过度活化PI3K信号通路的癌细胞系产生微摄级细胞毒性。