Molecular modeling studies and synthesis of novel quinoxaline derivatives with potential anticancer activity as inhibitors of c-Met kinase
作者:Hebat-Allah S. Abbas、Aisha R. Al-Marhabi、Sally I. Eissa、Yousry A. Ammar
DOI:10.1016/j.bmc.2015.09.023
日期:2015.10
addition, chlorination of 1 with phosphorus oxychloride afforded the 2-chloro derivative 5 which was used as a key intermediate for the synthesis of substituted quinoxaline derivatives 6-8, N-pyrazole derivative 9, tetrazolo[1,5-a]quinoxaline derivative 10 and Schiff base derivatives 13, 15 via reaction with several nucleophiles reagents. Docking methodologies were used to predict their binding conformation
为了开发有效的抗癌药,我们合成了一些取代的喹喔啉衍生物。6-溴-3-甲基喹喔啉-2(1H)-1与芳族醛的反应提供了苯乙烯基衍生物2a-e。用氯乙酸乙酯将1烷基化,生成N-烷基衍生物3。将酯衍生物3与水合肼水合肼解,得到酰肼衍生物4。此外,将1用氯氧化磷氯化,得到2-氯衍生物5,将其用作中间体。通过与几种亲核试剂反应合成取代的喹喔啉衍生物6-8,N-吡唑衍生物9,四唑[1,5-a]喹喔啉衍生物10和席夫碱衍生物13、15的关键中间体。对接方法用于预测其结合构象,以解释其测试的生物学活性的差异。体外筛选所有测试的化合物对三种肿瘤细胞系的细胞毒性作用。研究了一些新的喹喔啉衍生物作为c-Met激酶的抑制剂,c-Met激酶是在许多人类癌症中与高肿瘤等级和不良预后相关的受体。化合物2e,4、7a,12a,12b和13在CDOCKER能量评分中显示出最高的结合亲和力,而对三种类型的癌细胞系则显示出最低的