Experimental and Computational Investigation of the Oxime Bond Stereochemistry in c-Jun N-terminal Kinase 3 Inhibitors 11H-Indeno[1,2-b]quinoxalin-11-one Oxime and Tryptanthrin-6-oxime

被引:3
|
作者
Matveevskaya, Vladislava V. V. [1 ]
Pavlov, Dmitry I. I. [1 ]
Kovrizhina, Anastasia R. R. [2 ]
Sukhikh, Taisiya S. S. [1 ]
Sadykov, Evgeniy H. H. [1 ]
Dorovatovskii, Pavel V. V. [3 ]
Lazarenko, Vladimir A. A. [3 ]
Khlebnikov, Andrei I. I. [2 ]
Potapov, Andrei S. S. [1 ]
机构
[1] Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, 3 Lavrentiev Ave, Novosibirsk 630090, Russia
[2] Natl Res Tomsk Polytech Univ, Kizhner Res Ctr, 30 Lenin Ave, Tomsk 634050, Russia
[3] Natl Res Ctr Kurchatov Inst, Kurchatov Sq 1, Moscow 123182, Russia
关键词
kinase inhibitor; oxime; crystal structure; nuclear magnetic resonance; rotation barrier; DENSITY-FUNCTIONAL METHODS; MOLECULAR-ORBITAL METHODS; BASIS-SETS; CHEMICAL-SHIFTS; ADJUSTABLE-PARAMETERS; C-13; H-1; DERIVATIVES; ASSIGNMENT; INTEGRATION;
D O I
10.3390/pharmaceutics15071802
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
11H-Indeno[1,2-b]quinoxalin-11-one oxime (IQ-1) and tryptanthrin-6-oxime are potent c-Jun N-terminal kinase 3 (JNK-3) inhibitors demonstrating neuroprotective, anti-inflammatory and anti-arthritic activity. However, the stereochemical configuration of the oxime carbon-nitrogen double bond (E- or Z-) in these compounds was so far unknown. In this contribution, we report the results of the determination of the double bond configuration in the solid state by single crystal X-ray diffraction and in solution by 1D and 2D NMR techniques and DFT calculations. It was found that both in the solid state and in solution, IQ-1 adopts the E-configuration stabilized by intermolecular hydrogen bonds, in contrast to previously assumed Z-configuration that could be stabilized only by an intramolecular hydrogen bond.
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页数:20
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