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Updated: Jan 20, 2026

$Single Crystal and Powder X-ray Diffraction$

Single Crystal and Powder X-ray Diffraction

Published on: April 30, 2023

从同步仪粉末衍射数据和密度函数理论中获得的 Racemic Calcium 5-methyl-tetra-hydrofolate trihydrate 的结构

Jacob K Salazar¹, James A Kaduk¹

¹Department of Chemistry North Central College, 131 S Loomis St Naperville IL 60540 USA.

Acta crystallographica. Section E, Crystallographic communications

|January 19, 2026

概括

确定了一种新型叶酸化合物的晶体结构,揭示了明显的水友性和疏水性层. 这种结构与先前研究的纯净酶形式有显著差异.

科学领域:

晶体学晶体学是指结晶学.
材料科学材料科学材料科学
生物化学生物化学

背景情况:

叶酸复合体在生物系统中至关重要.
了解叶酸衍生物的晶体结构对于药物开发至关重要.
之前的研究集中在叶酸的纯净形式上.

研究的目的:

为了阐明racemic叶酸化合物的晶体结构.
为了比较结构特征与enantiopure叶酸.
为了研究协调化学和键网络.

主要方法:

同步射线X射线粉碎衍射光谱
密度函数理论 (DFT) 的优化优化
结晶结构的解决方案和精炼.

主要成果:

确定了聚--2S) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6S) - - - 氨基-5-甲基-1,4,5,6,7,8-六胺-6-]甲基}氨基) ]形式胺}丁二氧化) 二) 单水化合物]的晶体结构.
该结构呈现出与BC平面平行的交替水友性 (Ca/O) 和疏水性层.
观察到一个广泛的键网络 (O-HO和N-HO),连接协调球和离子层.
离子在扭曲的八面体几何学中具有6坐标,由水分子,碳酸盐群和碳基团协调.
与l-5-methyl-tetrahydrofolate trihydrate相比,在协调几何结构和扩展结构上发现了显著的差异.

结论:

种族性叶酸化合物的晶体结构显示出一种独特的分层排列.
观察到的结构特征,包括协调和键,与纯形式明显不同.
这项研究为叶酸复合物的结构多样性提供了新的见解.

关键词:

5甲基四水合叶酸 5-甲基四水合叶酸梅塔福林 (Metafolin) 是一种含有甲基的药物.瑞特维尔德的提炼方式密度函数理论密度函数理论粉末衍射衍射的方法

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