Synthesis of New Schiff Bases and Polycyclic Fused Thiopyranothiazoles Containing 4,6-Dichloro-1,3,5-Triazine Moiety
作者:Svyatoslav V. Polovkovych、Andrew I. Karkhut、Natalia G. Marintsova、Roman B. Lesyk、Borys S. Zimenkovsky、Volodymyr P. Novikov
DOI:10.1002/jhet.890
日期:2013.11
New aromatic aldimines, isatine substituted ketimines based on (4,6‐dichloro‐1,3,5‐triazin‐2‐yl)‐hydrazine scaffold and polycyclicfusedthiopyranothiazoles formed using hetero‐Diels‐Alder reactions starting from 4‐thioxo‐2‐thiazolidinones and 5‐norbornene‐2,3‐dicarboxylic acid triazino‐derivatives synthetic approach is described. The application of condensation and cyclocondensation reactions of N‐nucleophiles
AbstractHere it is described the synthesis, antioxidant and antimicrobialactivity determination of novel rel-(\(5R,6S,7R\))-6-benzoyl-7-phenyl-2-oxo-3,5,6,7-tetrahydro-2H-thiopyrano[2,3-d]thiazole-5-carboxylic acids. The target compounds were obtained in good yields from 5-arylidene-4-thioxo-2-thiazolidinones and \(\upbeta \)-aroylacrylic acids via regio- and diastereoselective hetero-Diels–Alder
抽象的这里描述了新型rel-(\(5R,6S,7R \))-6-苯甲酰基-7-苯基-2-氧代-3,5,6,7-四氢-的合成,抗氧化剂和抗菌活性的测定2 H-硫代吡喃并[2,3 - d ]噻唑-5-羧酸。通过区域-和非对映选择性的杂-Diels-Alder反应,从5-芳叉基-4-硫代-2--2-噻唑烷酮和\(upbeta \)-芳酰基丙烯酸以高收率获得了目标化合物。通过NMR光谱证实了环加成的立体化学。进行抗氧化和抗菌活性筛选,鉴定出7种化合物(3c,3e,3f,3g,3k,3l,3p)具有高水平的自由基清除能力(43-77%DPPH测定),以及对金黄色葡萄球菌,枯草芽孢杆菌和白色念珠菌有显着影响的化合物(MIC 3.13-6.25 \(\ upmu \ hbox g / mL} \)),但对大肠杆菌有轻微影响。 图形概要
Application of the 2(5 H )furanone motif in the synthesis of new thiopyrano[2,3- d ]thiazoles via the hetero-Diels–Alder reaction and related tandem processes
作者:Andrii Lozynskyi、Borys Zimenkovsky、Andriy Karkhut、Svyatoslav Polovkovych、Andrzej K. Gzella、Roman Lesyk
DOI:10.1016/j.tetlet.2016.06.060
日期:2016.7
Novel thiopyrano[2,3-d]thiazole derivatives were synthesized from 5-arylidene-4-thioxo-2-thiazolidinones and 2(5H)furanone in 62–79% yields via hetero-Diels–Alder reactions and related acylation-based tandem processes. The reaction of 5-(4-fluorophenyl)-4-thioxo-2-thiazolidinone with 2(5H)furanone was studied by DFT at the M06-2X/6-31+G(d,p) level. The stereo- and regioselectivities of cycloaddition
新型的噻吩并[2,3- d ]噻唑衍生物是由5-芳叉基-4-硫代-2-噻唑烷酮和2(5 H)呋喃酮通过杂Diels-Alder反应和相关的酰化反应合成的,产率为62-79%。串联过程。通过DFT在M06-2X / 6-31 + G(d,p)水平上研究了5-(4-氟苯基)-4-硫代氧-2-噻唑烷酮与2(5 H)呋喃酮的反应。环加成反应的立体选择性和区域选择性通过NMR光谱和单晶X射线衍射分析确定。