Mechanism of Thiol-Induced Nitrogen(II) Oxide Donation by Furoxans: a Quantum-Chemical Study

被引:11
作者
Burov, Oleg N. [1 ]
Kletskii, Mikhail E. [1 ]
Fedik, Nikita S. [1 ]
Lisovin, Anton V. [1 ]
Kurbatov, Sergey V. [1 ]
机构
[1] Southern Fed Univ, 7 Zorge St, Rostov Na Donu 344090, Russia
基金
俄罗斯科学基金会;
关键词
furoxans; nitrogen(II) oxide; DFT calculations; thiol-induced NO donation mechanism; NITRIC-OXIDE; VASODILATOR ACTION; S-NITROSOCYSTEINE; OXIDATIVE STRESS; RELAXING FACTOR; PEROXYNITRITE; NITROGLYCERIN; BENZOFUROXAN; METABOLITES; DERIVATIVES;
D O I
10.1007/s10593-016-1804-z
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Quantum-chemical calculations according to DFT with UB3LYP functional in the 6-311++G** basis set, and accounting for solvation effects by the polarized continuum method were used to study the mechanisms of thiol-induced fragmentation of unsubstituted and annulated furoxans with the elimination of nitrogen(II) oxide. A preference for NO formation according to the radical mechanism involving an attack by sulfanyl radical (HSE (TM)) on the carbon atom bonded to the N-oxide group was demonstrated for all systems. Anionic mechanisms involving HS- anions were not feasible in any of the cases due to high endothermic effects.
引用
收藏
页码:951 / 960
页数:10
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