Design and chemical synthesis of [1,2,4]triazol[1,5-c]pyrimidin-5-yl amines, a novel class of VEGFR-2 kinase inhibitors
作者:Alexander S. Kiselyov、Eugene L. Piatnitski Chekler、Natalia B. Chernisheva、Lev K. Salamandra、Victor V. Semenov
DOI:10.1016/j.tetlet.2009.04.062
日期:2009.7
describes a facile approach to 7,8-dihydro[1,2,4]triazol[1,5-c]pyrimidin-5-yl amines, a novel class of potent inhibitors of vascular endothelial growth factor receptor II (VEGFR-2). The synthetic sequence is centered around preparation of the key 3(5)-cyanomethyl-1,2,4-triazole intermediates and their Knoevenagel condensation with aromatic aldehydes. A subsequent three-step conversion of Knoevenagel
这封信描述了一种简便的方法来处理7,8-二氢[1,2,4]三唑[1,5 - c ]嘧啶-5-基胺,这是一类新型的血管内皮生长因子受体II(VEGFR- 2)。合成顺序以关键的3(5)-氰基甲基-1,2,4-三唑中间体的制备及其与芳族醛的Knoevenagel缩合为中心。随后的Knoevenagel加合物的三步转化涉及还原乙烯基腈,然后使所得的胺与异硫氰酸芳基酯反应,并将相应的硫脲环化,生成目标杂环,以1:1的互变异构体混合物形式存在。代表性分子在酶和细胞分析中均具有针对VEGFR-2的声音活性。