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基于分子片段的药物发现 被引量:2

Fragment-based drug discovery
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摘要 药物是由若干个分子片段相互连接所构成的,分子片段具有功能性和结构性两大特点。功能性分子片段包含药物产生生物活性所必须的结构单元(简称药效基团);而结构性分子片段则是将功能性分子片段连接起来从而形成特定结构的分子骨架。药物分子结构复杂多样,但如果将其分子骨架进行分解,则会发现药物分子通常包含相似的分子片段,这些片段分子具有较为简单的分子结构,较低的相对分子质量和脂水分配系数。对片段分子进行分类和生物活性筛选,通过分子的扩增、融合以及置换连接方式等手段发现先导化合物的方法称为基于分子片段的药物发现方法。这种方法改进了传统的基于结构以及基于高通量筛选的药物发现方法,控制了先导化合物的相对分子质量和类药性特征,提高了新药研究的成功率。本文结合先导物发现实例对基于分子片段的药物发现方法的内容,研究思路以及片段分子的结构优化方法进行了综述。 A drug is composed of fragments with their functional and structural characteristics.Functional fragments contain structural elements known as pharmacophores which generate the bioactivity of the drugs,while structural fragments assemble the functional fragments into a specific skeleton also crucial for the activity.Although drug molecules possess structural diversity and complexity,the fragments usually have some similarity.They normally have simple texture,low molecular weight and log P.The aim of fragmen...
出处 《中国药科大学学报》 CAS CSCD 北大核心 2009年第4期289-296,共8页 Journal of China Pharmaceutical University
关键词 分子片段 药效基团 分子骨架 新药研究 药物发现 fragments pharmacophore molecular framework new drug research drug discovery
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