Synthesis and antitumor activity of a novel series of 6-substituted pyrrolo[2,3-d]pyrimidines as potential nonclassical antifolates targeting both thymidylate and purine nucleotide biosynthesis
作者:Yi Liu、Chuang Zhang、Hongying Zhang、Meng Li、Jiangsong Yuan、Yurui Zhang、Jiaqi Zhou、Huicai Guo、Lijuan Zhao、Yumin Du、Lei Wang、Leiming Ren
DOI:10.1016/j.ejmech.2015.01.055
日期:2015.3
A novel series of 2-amino-4-oxo-6-substituted pyrrolo[2,3-d]pyrimidines were designed and synthesized as potential nonclassical antifolates targeting both thymidylate and purine nucleotide biosynthesis. Condensation of 2,4-diamino-6-hydroxypyrimidine with ethyl-4-chloroacetoacetate and subsequent hydrolysis afforded the key intermediate, 2-amino-4-oxo-pyrrolo[2,3-d]pyrimidin-6-yl-acetic acid. Coupling
设计并合成了一系列新型的2-氨基-4-氧代-6-取代的吡咯并[2,3- d ]嘧啶,作为靶向胸苷酸和嘌呤核苷酸生物合成的潜在非经典抗叶酸药物。2,4-二氨基-6-羟基嘧啶与-4-氯乙酰乙酸乙酯缩合,然后水解,得到了关键的中间体2-氨基-4-氧代-吡咯并[2,3 - d ]嘧啶-6-基-乙酸。与各种氨基酸甲酯偶合,接着皂化和缩合与3-(氨基甲基)吡啶提供目标化合物1 - 9。新化合物对包括KB,A549和HepG2在内的一系列肿瘤细胞系表现出微摩尔至亚微摩尔的抗增殖能力。化合物2的生长抑制对KB细胞的杀伤作用导致细胞毒性和G1 / G2期积累,并被过量的胸苷和腺苷部分保护,但在胸苷和腺苷的组合中被完全逆转,表明胸苷和从头嘌呤核苷酸合成都是靶向途径。但是,5-氨基咪唑-4-羧酰胺(AICA)的保护是不完全的,表明对甘氨酰胺核糖核苷酸甲酰基转移酶(GARFTase)和AICA核糖核苷酸甲酰基转移