密度函数理论分析素分子结构和光谱
Yijun Zheng1, Yawu Zhang1, Zheyuan Wang1
1The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou 730030, China.
ACS omega
|February 9, 2026
概括
素的电子结构,包括其结合系统和键,是其强大的抗氧化和抗瘤活性的基础. 计算分析确定了关键活性部位,指导未来的药物设计以提高治疗潜力.
科学领域:
- 计算化学计算化学
- 分子建模分子建模
- 药理学 药理学是指药理学的学科.
背景情况:
- 素是一种天然的黄类化合物,具有已知的抗氧化和抗瘤特性.
- 精确的分子机制,连接的luteolin的电子结构,其药理作用仍然未被充分探索.
- 了解结构属性关系对于阐明化学特征和反应途径至关重要.
研究的目的:
- 用密度函数理论分析黄素的电子结构参数.
- 为了揭示黄素活性部位与其生物功能之间的相关性.
- 为了提供一个理论基础的luteolin的药理作用和指导药物设计.
主要方法:
- 使用B3LYP-D3-(BJ)/6-311G-(d,p) 方法优化几何配置.
- 电子结构参数的计算:边界分子轨道 (FMOs),电子亲和力 (EA),电离潜力 (IP),状态密度 (DOS),键解离能 (BDE),质子亲和力 (PA),分子表面静电潜力 (MESP) 和振动谱.
- 使用尺度包括原子轨道 (GIAO) 理论预测H和C核磁共振 (NMR) 化学转移.
主要成果:
- 几何优化和光谱分析证实了通过电子移位和稳定性调制对抗氧化和抗瘤潜力至关重要的联系统和键.
- 状态密度 (DOS) 分析表明,p-轨道主导的结合系统是化学稳定性和抗氧化活性的核心.
- 计算的参数 (HOMO-LUMO差距: 4.37 eV,BDE: 304.27 kJ/mol,IP: 724.44 kJ/mol) 和MESP分析确定了特定的基和碳基群作为氨酸的关键活性位点,用于氨酸的激素清除和生物活动.
结论:
- 氨酸的抗氧化和抗瘤作用与其电子结构密切相关,特别是其结合的骨干和分子内键.
- 该化合物通过组合机制 (原子转移,序列性质子损失电子转移,单个电子转移之后的质子转移) 有效地清除自由基.
- 环B上的基基组和环C上的碳基组被确定为关键活性位点,为向的基于醇的药物开发提供了宝贵的见解.
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