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Karplus relationships of the 2 J HNα and 3 J ΗΝβ couplings in organic azides
Magnetic Resonance in Chemistry ( IF 1.9 ) Pub Date : 2020-10-02 , DOI: 10.1002/mrc.5101
Armando Navarro-Vázquez 1 , Matteo Pennestri 2
Affiliation  

DFT and SOPPA computations in model organic azides revealed a Karplus-like dependence not only of the vicinal 3 JH-C-Nα-Nβ coupling, but also of the geminal 2 JH-C-Nα one, with the H-C-Nα =Nβ dihedral angle. Karplus equations were derived from the DFT computations on the isopropylazide model system. In light of these stablished relationships natural abundance 1 H-15 N couplings obtained for the azide group of the zidovudine antiviral helped to probe its conformation around the C-Nα bond as being of the synclinal type.

中文翻译:

有机叠氮化物中 2 J HNα 和 3 J HΝβ 偶联的 Karplus 关系

模型有机叠氮化物中的 DFT 和 SOPPA 计算揭示了一种类似 Karplus 的依赖性,不仅与邻位 3 JH-C-Nα-Nβ 偶联有关,而且对孪生 2 JH-C-Nα 偶联也有类似的依赖性,其中 HC-Nα =Nβ 二面体角度。Karplus 方程源自异丙基叠氮化物模型系统的 DFT 计算。根据这些稳定的关系,为齐多夫定抗病毒药物的叠氮基团获得的自然丰度 1 H-15 N 偶联有助于探测其在 C-Nα 键周围的构象是否为向斜型。
更新日期:2020-10-02
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