Novel oxazolo[4,5-g]quinazolin-2(1H)-ones: Dual inhibitors of EGFR and Src protein tyrosine kinases
摘要:
Quinazoline-containing derivatives are an important class of synthetic products and represent an attractive scaffold for EGFR inhibitors. A series of oxazolo[4,5-g]quinazolin-2(1H)-one derivatives were synthesized and the EGFR and Src inhibition activities were evaluated using Gefitinib as lead compound. The three most potent compounds 5y, 51 and 5a each inhibited EGFR at the IC50 value of 61 nM, 67 nM and 78 nM. Among them, 5c also demonstrated excellent inhibition activity against Src with the IC50 value of 3.1 mu M. Several of these derivatives also showed good anti-proliferation effects against KB and A498 cells. (C) 2012 Elsevier Masson SAS. All rights reserved.
新型恶唑[4,5 - g ]喹唑啉-2(1H)-one衍生物作为EGFR抑制剂的设计,合成和生物学活性
摘要:
合成了一系列以厄洛替尼为先导化合物的恶唑并[4,5 - g ]喹唑啉-2(1H)-一衍生物,并对其EGFR抑制活性进行了评估。这些在1位和8位具有变化的化合物分别包括醚和酯的亲水性侧链和芳族头部片段。所有这些化合物均通过EGFR抑制作用和两种体外抗增殖试验进行了评估。在EGFR-TK分析中,发现四种化合物比厄洛替尼更有效。此外,化合物18,42和50也具有良好的抗人表皮样癌细胞株(KB)和肾细胞癌的细胞系(A498)优良的抗增殖活性。最后,化合物50在小鼠刘易斯肺癌(LLC)异种移植模型中,与Erlotinib相比,在肿瘤生长方面具有明显更高的抑制作用。此外,化合物50在延长荷瘤小鼠的存活期方面显示出最显着的作用。
For the purpose of developing novel EGFR/HER2 tyrosine kinasesinhibitors with high inhibition activity and low toxicity, two novel series of oxazolo[4,5-g]quinazolin-2(1H)-one derivatives as EGFR/HER2 dual inhibitors introducing two electrophiles 2-(2-bromoacetyl)ethyl and 2-(2-chloroacetoxy)ethyl group as side-chain at 1-position respectively and evaluated their EGFR and HER2 inhibition activity
为了开发具有高抑制活性和低毒性的新型EGFR / HER2酪氨酸激酶抑制剂,两个新系列的恶唑并[4,5- g ]喹唑啉-2(1H)-one衍生物作为EGFR / HER2双重抑制剂引入了两种亲电试剂以2-(2-溴乙酰基)乙基和2-(2-氯乙酰氧基)乙基为侧链,分别与拉帕替尼比较,评价其对EGFR和HER2的抑制活性和毒性。所有这些化合物均通过EGFR和HER2激酶抑制作用以及两种体外抗增殖试验进行了评估。大多数设计的化合物均表现出对EGFR和HER2的中等至高抑制活性。特别是化合物11o,11p,12e和12f表现出对EGFR和HER2的高度抑制作用。此外,化合物11p和12f对人肺腺癌细胞系(A549)和人乳腺癌细胞系(SK-Br3)的抗增殖活性也很好,而12f对人胚肺成纤维细胞的毒性最低。线(HELF)单元格。最后,在小鼠刘易斯肺癌(LLC)异种移植模型中,化合物12f表现出比拉帕替尼显着更高的对肿瘤生长的抑制作用。