Synthesis and Anti-proliferative Activity of Substituted-Anilinoquinazolines and Its Relation to EGFR Inhibition
作者:D. Ella、K. Saleh、M. Hassan、N. Hamdy、M. El-Araby、K.A. Abouzid
DOI:10.1055/s-0032-1312601
日期:2012.8
4-Anilinoquinazoline is a privileged scaffold in developing small molecule inhibitors of tyrosine kinases (TK) especially epidermal growth factor receptor (EGFR). 2 series belonging to 3'-substituted-4-anilinoquinazoline scaffold were synthesized and screened in vitro on isolated and a breast cancer cell line. The research aims at exploring the activity of compounds having diverse substituents at 3' position of the aniline moiety. Generally, the meta-substituted-anilinoquinazolines exhibited significant inhibitory activity against isolated enzyme as well as MCF-7 cancer cell line. For instance, compound 10b inhibited >99% of EGFR activities at 10 µM concentration. 6 of the tested compounds exhibited range of anti-proliferative activity below 10 µM potency. In particular, compounds 6e and 10b displayed the highest activity among the tested compounds with IC50 values equal to 8.6 and 4.84 µM, respectively. Structure-based tools were utilized to rationalize EGFR-TK binding of compound 10b since it is the most active compound in the enzyme inhibition test.
4-苯胺喹唑啉是开发小分子酪氨酸激酶(TK)抑制剂,特别是表皮生长因子受体(EGFR)的优选骨架。合成了两系列3'-取代-4-苯胺喹唑啉骨架的化合物,并在分离的酶和乳腺癌细胞系MCF-7上进行了体外筛选。研究旨在探讨在苯胺部分的3'位具有不同取代基的化合物的活性。一般来说,间位取代的苯胺喹唑啉对分离酶和MCF-7癌细胞系表现出显著的抑制活性。例如,化合物10b在10 μM浓度下抑制了超过99%的EGFR活性。测试的化合物中,有6种表现出低于10 μM有效性的抗增殖活性。特别是,化合物6e和10b在测试的化合物中显示出最高的活性,IC50值分别为8.6和4.84 μM。利用基于结构的工具对化合物10b与EGFR-TK的结合进行了理性分析,因为它是酶抑制测试中最活跃的化合物。