Synthesis of Furoneoflavones Modified by Coumarin and (HET)Aroyl Substituents
作者:T. V. Shokol、V. S. Moskvina、Ye. K. Hlibov、M. S. Frasinyuk、V. P. Khilya
DOI:10.1007/s10600-021-03275-4
日期:2021.1
Furo[3,2-g]neoflavones and furo[2,3-h]neoflavones modified by coumarin and (het)aroyl substituents were synthesized via reactions of 7-hydroxy-6(8)-acetyl(formyl)neoflavones with substituted phenacyl bromides, 2-bromacetylbenzofuran, and 4-chloromethylcoumarins.
Iridium(<scp>i</scp>) complexes bearing hemilabile coumarin-functionalised N-heterocyclic carbene ligands with application as alkyne hydrosilylation catalysts
作者:Mert Olgun Karataş、Bülent Alıcı、Vincenzo Passarelli、Ismail Özdemir、Jesús J. Pérez-Torrente、Ricardo Castarlenas
DOI:10.1039/d1dt01946e
日期:——
A set of iridium(I) complexes of formula IrCl(κC,η2-IRCouR′)(cod) or IrCl(κC, η2-BzIRCouR′)(cod) (cod = 1,5-cyclooctadiene; Cou = coumarin; I = imidazolin-2-carbene; BzI = benzimidazolin-2-carbene) have beeen prepared from the corresponding azolium salt and [Ir(μ-OMe)(cod)]2 in THF at room temperature. The crystalline structures of 4b and 5b show a distorted trigonal bipyramidal configuration in the
一组铱(我)式的IrCl的复合物(κ Ç,η 2 -I - [R凑R' )(COD)或的IrCl(κ Ç,η 2 -BzI ř凑R' )(COD)(COD = 1, 5-环辛二烯;Cou = 香豆素;I = 咪唑啉-2-卡宾;BzI = 苯并咪唑啉-2-卡宾)在室温下由相应的唑鎓盐和 [Ir(μ-OMe)(cod)] 2在 THF 中制备. 4b和5b的晶体结构显示了在固态下具有协调的香豆素部分的扭曲三角双锥构型。相比之下,由于吡喃酮环的半化能力,在溶液中观察到该五配位结构与相关方形平面异构体之间的平衡。分别在低温和高温极限下实现了两种物质的 NMR 表征。此外,平衡的热力学参数 Δ H R和 Δ S R是通过 VT 1 H NMR 光谱获得的,并且落在 22-33 kJ mol -1和 72-113 J mol -1 K -1 的范围内,分别。IrCl(κ C ,η 2-BzI Tol
One-pot synthesis of 4-heteroaryl-1,2-dihydro-3-benzazepines from 3,4-dihydroisoquinolinium salts or pseudo bases
作者:Alexander A. Zubenko、Viktor G. Kartsev、Anatolii S. Morkovnik、Ludmila N. Divaeva、Danil V. Alexeenko、Kyrill Yu. Suponitsky、Gennadii S. Borodkin、Alexander I. Klimenko
DOI:10.1016/j.tetlet.2017.02.036
日期:2017.3
novel one-pot synthetic route to the poorly studied 4-heteroaryl-1,2-dihydro-3-benzazepine motif from 3,4-dihydroisoquinolinium compounds is described. The synthetic approach is based on heterocyclic ring expansion of isoquinoline substrates upon reaction with chloromethyl-substituted heterocycles. The scope and limitations of the reaction were investigated to give a series of novel heteroaryl-3-benzazepines
Synthesis and properties of 4-(3-amino-2-benzofuranyl)-coumarins
作者:M. S. Frasinyuk、S. V. Gorelov、S. P. Bondarenko、V. P. Khilya
DOI:10.1007/s10593-010-0417-1
日期:2009.10
The alkylation of o-cyanophenol by 4-chloromethylcoumarins and subsequent intramolecular condensation by the cyano and methylene groups gives substituted 4-(3-amino-2-benzo-furanyl)coumarins. We studied the reactions of these compounds with acylating agents as well as with aldehydes, which lead to the 6H-[1]benzofuro[3,2-b]chromeno[4,3-d]pyridin-6-one system as the result of consecutive transformations
A novel coumarin-triazole-thiophene hybrid: synthesis, characterization, ADMET prediction, molecular docking and molecular dynamics studies with a series of SARS-CoV-2 proteins
作者:Rebaz Anwar Omar、Pelin Koparir、Kamuran Sarac、Metin Koparir、Damir A Safin
DOI:10.1007/s12039-022-02127-0
日期:——
microanalysis, IR, 1H, and 13C APT NMRspectroscopy. The DFT calculations examined the structure and electronic properties of 1 in gas phase. Its reactivity descriptors and molecular electrostatic potential revealed the reactivity and the reactive centers of 1. ADMET properties of 1 were evaluated using the respective online tools. It was established that 1 exhibit positive gastrointestinal absorption properties
新型香豆素-三唑-噻吩杂化物4-(((4-乙基-5-(噻吩-2-基)-4 H -1,2,4-三唑-3-基)硫代)的合成、表征及理论研究)甲基)-6,7-二甲基-2 H -苯并吡喃-2-酮 ( 1 ),由 4-乙基-5-(噻吩-2-基)-4 H -1,2,4-三唑制备报道了-3-硫醇和4-(氯甲基)-6,7-二甲基-2H-苯并-2-酮。所得化合物通过微量分析、IR、 1 H 和13 C APT NMR 光谱进行表征。 DFT 计算检查了1在气相中的结构和电子特性。其反应性描述符和分子静电势揭示了1的反应性和反应中心。使用相应的在线工具评估1的 ADMET 属性。已确定1表现出积极的胃肠道吸收特性和消极的人体血脑屏障渗透特性。毒性模型报告显示1属于毒性类别4。另外还应用分子对接研究1与一些SARS-CoV-2蛋白的相互作用。已确定标题化合物对所有应用的蛋白质均具有活性,并且与木瓜蛋白酶样蛋白酶