系统地探索影响DNA化和生物活性的雅塔基的结构特征
Mark S Tichenor1, Karen S MacMillan, John D Trzupek
1Department of Chemistry and the Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.
Journal of the American Chemical Society
|August 19, 2007
概括
亚塔基的独特的三明治结构显著提高了DNA化效率,并强化了细胞毒性活性. 亚单元替代剂对药物的疗效不如这种安排那么重要.
科学领域:
- 药用化学 医学化学
- 有机化学 有机化学
- 分子生物学分子生物学
背景情况:
- 雅塔基和相关化合物,如CC-1065和二甲基是具有细胞毒性特性的DNA化剂.
- 这些药物的有效性往往受到影响其DNA化反应的因素的限制.
研究的目的:
- 系统地检查雅塔基的左和右子单元及其替代剂对DNA化的影响.
- 调查三个子单元的排列 (三合一,扩展和反转类型) 对反应速率,效率和选择性的影响.
- 为了比较雅塔凯米辛类似物与传统DNA化剂的活性.
主要方法:
- 合成和表征大约50种雅塔克胺类同类物质.
- 系统地检查子单位和替代物的结构影响.
- 对DNA化反应动力学和选择性的分析.
主要成果:
- 雅塔克辛三个子单元的独特的三边排列使得DNA的化率和效率大大提高.
- 与安排相比,雅塔基米辛子单元上的替代剂对活性的影响相对较小.
- 化子单元在三个子单元结构中的位置深深地影响了DNA化速率,效率和选择性.
- 嵌套剂的两个反体都化相同的腺因位点,无论绝对配置如何,都显示出一致的DNA化选择性.
结论:
- 这种三明治排列是驱动雅塔克辛增强的DNA化和细胞毒性活动的关键结构特征.
- 雅塔基的优化DNA化克服了传统药物如CC-1065和二甲基的局限性.
- 这项研究阐明了结构布局在决定DNA化选择性和强度方面的关键作用.
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