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Steric control for inclusion compounds of sequential and chiral polymers

序列和手性聚合物包合物的空间控制

基本信息

批准号：
08455442
负责人：
MIYATA Mikiji
金额：
$ 4.8万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08455442/
关键词：
Sequence Carbon-chain Polymers Chiral Recognition Molecular Information Steric Control Expression of Information X-ray Analysis Molecular Graphics

项目摘要

We aimed to control steric structures of inclusion compounds of chiral and sequential polymers, enabling us to establish the concept of molecular information and expression by carbon-chain compounds. The results are summarized as follows ;1. We synthesized many steroidal compounds, starting from commercially availabe bile acids and their derivatives. We confirmed that most of the steroids form the inclusion compounds with a variety of organic substances. The inclusion behaviors varied from one case to another. We evaluated a relation between the original host molecules and the inclusion behaviors.2. We determined a scope of the guest components included. The scope varied from one case to another. We accumulated basic experimental data necessary for considering possible mechanism of the molecular recognition from a viewpoint in size, shape, chirality and polarity.3. We analyzed powder X-ray diffraction patterns of the resulting inclusion compounds. The comparative study led to a classification of the molecular assemblies. Many single crystals were analyzed by X-ray crystallography, resulting in acquiring over hundred crystal structures of the inclusion compounds.4. We confirmed that multiple combinations among the hydrogen-bonding groups may play an important role in determining the host-guest relationship. Four or three discrete hydrogen bonding groups associate together in various ways. This diversity is responsible for variable inclusion phenomena which is dependent on the host structures.5. We condtructed molecular assemblies suitable for studying on various aspects of the host-guest interactions by using personal computers. Tomographic study enabled us to understand spaces at a molecular level to accommodate the guest components.

我们的目标是控制手性和序列聚合物的包合物的空间结构，使我们能够建立分子信息和碳链化合物表达的概念。研究结果总结如下： 1．我们从市售胆汁酸及其衍生物开始合成了许多甾体化合物。我们证实大部分类固醇与多种有机物形成包合物。不同案例的包容行为各不相同。我们评估了原始主体分子与包合行为之间的关系。 2．我们确定了所包含的来宾组件的范围。不同案例的范围有所不同。我们积累了从尺寸、形状、手性和极性角度考虑分子识别可能机制所必需的基础实验数据。 3．我们分析了所得包合物的粉末 X 射线衍射图。比较研究对分子组装体进行了分类。通过X射线晶体学分析了许多单晶，获得了上百种包合物的晶体结构。 4．我们证实氢键基团之间的多种组合可能在决定主客体关系中发挥重要作用。四个或三个离散的氢键基团以各种方式结合在一起。这种多样性导致了取决于主体结构的可变包容现象。5．我们通过使用个人计算机构建了适合研究主客体相互作用各个方面的分子组装体。断层扫描研究使我们能够在分子水平上了解容纳客体成分的空间。