Design, synthesis and biological evaluation of 6-substituted pyrrolo[2,3-d]pyrimidines as dual inhibitors of TS and AICARFTase and as potential antitumor agents
作者:Yi Liu、Meng Li、Hongying Zhang、Jiangsong Yuan、Congying Zhang、Kai Zhang、Huicai Guo、Lijuan Zhao、Yumin Du、Lei Wang、Leiming Ren
DOI:10.1016/j.ejmech.2016.03.032
日期:2016.6
A new series of 2-amino-4-oxo-6-substituted pyrrolo[2,3-d]pyrimidines, with an isosteric replacement of the side chain amide moiety to a sulfur atom, were designed and synthesized as multitargeted antifolates as well as potential antitumor agents. Starting from previously synthesized 2-amino-4-oxo-pyrrolo[2,3-d]pyrimidin-6-yl-acetic acid, a reduction by lithium triethylborohydride and successive mesylation
设计并合成了一系列新的2-氨基-4-氧代-6-取代的吡咯并[2,3- d ]嘧啶,将侧链酰胺部分等位取代成硫原子,并合成了多目标抗叶酸剂和潜在的抗肿瘤药。从先前合成的2-氨基-4-氧代-吡咯并[2,3- d ]嘧啶-6-基乙酸开始,用三乙基硼氢化锂还原并连续进行甲磺酸化,得到关键的甲磺酸酯。巯基乙酸或巯基丙酸甲酯进行亲核取代,然后与吡啶基甲胺进行水解和缩合,得到非经典化合物1-6,而与谷氨酸二乙酯盐酸盐的缩合和皂化得到经典的类似物7-8。。所有目标化合物均显示出对KB,SW620和A549肿瘤细胞系的抑制活性。与甲氨蝶呤(MTX)和培美曲塞(PMX)相比,该系列中最有效的化合物7和8是对A549细胞的更好抑制剂。核苷保护测定确定了化合物8为胸苷酸合酶(TS)和5-氨基咪唑-4-羧酰胺核糖核苷酸甲酰基转移酶(AICARFTase)的双重抑制剂,同时靶向胸腺嘧啶和嘌呤核苷酸的生物合成,这已通过