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在8-阿米诺基诺林附加酸中稳定二分化键

Shashank Shekhar^1,2, Rachana Meena^1,2, Jhajan Lal^1,2

¹Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, 226031, Lucknow, India.

Chemistry, an Asian journal

|May 3, 2024

概括

研究人员使用8-aminoquinoline稳定了酸中的罕见N-H⋅⋅⋅N键. 这种由晶体结构和光谱学证实的双叉相互作用,为的构造和稳定提供了新的见解.

科学领域:

化学生物学是化学生物学.
结构生物学是结构生物学.
酸的化学结构

背景情况:

氨基酸N-H⋅⋅⋅N结合在富含proline的中很常见,但由于二面角限制,在其他中很少见.
在非prolyl中稳定这种相互作用是具有挑战性的,但对于理解的结构和功能至关重要.

研究的目的:

稳定和描述非基的N-H⋅⋅⋅N结相互作用.
为了研究8-氨基基诺在形成二分化键中的作用.
分析这些新型的结构和形状偏好.

主要方法:

设计和合成含有8-氨基诺林的模型 (2a-i).
进行X射线晶体学以确定所选 (2a-c,2i) 的晶体结构.
分析晶体包装,希尔什菲尔德表面和指纹图.
核磁共振 (NMR) 光谱和循环二元化 (CD) 光谱在溶液中.

主要成果:

成功稳定了涉及8-氨基基诺林部分的分叉N⋅⋅⋅H⋅⋅N结.
晶体结构揭示了氨基基诺林的胺N-H,它与前面的残留物和素进行了分叉相互作用.
分子间O⋅⋅⋅H接触被确定为稳定分叉结的重要贡献者.
溶液状态NMR和CD光谱数据证实了在晶体结构中观察到的形状偏好.

结论:

8 - 氨基oline 是一个有效的动机稳定罕见的胺N-H⋅⋅⋅N 键在非prolyl酸通过分叉相互作用.
该研究阐明了稳定这些相互作用的结构基础,强调了分子间接触的贡献.
这些发现为的构成和稳定策略提供了宝贵的见解,与设计和药物发现相关.

关键词:

8 - 氨基基诺氨基氨基.两叉式结结合的二元化结合.C−H⋅⋅⋅O 键键键希尔什菲尔德表面分析 N−H⋅⋅⋅N 的键.

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