项目名称: 基于烯烃的不对称环氧化开环反应合成手性非环核苷类化合物的研究
项目编号: No.21202039
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 有机化学
项目作者: 牛红英
作者单位: 河南科技学院
项目金额: 25万元
中文摘要: 手性非环核苷及核苷酸类化合物具有广泛的抗癌和抗病毒活性,因此开发具有光学活性的手性非环核苷(酸)类新药,研究其构效关系,从而更准确地设计和合成可用于临床实验的药物分子,具有重要的理论意义和广阔的应用前景。目前,该类化合物的合成存在步骤多、收率低、手性源不易获得、产物类型不易扩展等缺点。本课题组近年来一直从事核苷(酸)类似物的合成及不对称方法学研究,合成了一系列嘌呤碱基的6位或9位被氮、磷、芳基、烷基等修饰的化合物。本项目拟以非手性的9-烯丙基嘌呤为原料,用Jacobsen催化体系,通过不对称环氧化反应合成环氧乙烷结构,而后用多种亲核试剂对其开环而合成一系列带有不同官能团的新型手性非环核苷类化合物,并进一步衍生得到系列手性非环核苷酸类化合物,进而建立手性非环核苷(酸)类化合物库,总结其新的合成方法学;并对其药理活性进行初步研究,总结构效关系,为手性非环核苷(酸)类新药的设计提供理论依据。
中文关键词: 非环核苷;手性;开环反应;环氧丙烷;对映选择性
英文摘要: Chiral acyclic nucleoside/nucleotide compounds are reported to have extensive anticancer and antiviral activities. It is of great theoretical and applicative importance to develop optically pure chiral nucleoside drugs and research their structure-activity relationship. However, it is generally believed that the available synthetic methods of optically pure chiral nucleoside compounds have some disadvantages such as expensive and unreadily available starting material,multi-step, low-yield, etc.. In recent years, we have been working on the modification of purine bases and asymetric synthesis, and a series of new purine compounds have been successfully synthesized in our lab. This project will design and synthesize a series of chiral acyclic nucleosides from 9-allylpurine via asymmetric epoxidation and ring-opening reaction catalyzed by Jacobsen catalytic system. We also plans to research the pharmacological activities of new compounds and summarize the structure-activity relationship, which will provide theoretical foudation for the development of new drugs.
英文关键词: acyclic nucleoside;chirality;ring-opening reaction;cyclopropane;enantioselectivity