An efficient synthetic route to construct diverse pyrazole-based chalcones from 1-phenyl-1H-pyrazol-3-ols bearing a formyl or acetyl group on the C4 position of pyrazole ring, employing a base-catalysed Claisen–Schmidt condensation reaction, is described. Isomeric chalcones were further reacted with N-hydroxy-4-toluenesulfonamide and regioselective formation of 3,5-disubstituted 1,2-oxazoles was established
作者:Varvuolytė, Gabrielė、Řezníčková, Eva、Bieliauskas, Aurimas、Kleizienė, Neringa、Vojáčková, Veronika、Opichalová, Alena、Žukauskaitė, Asta、Kryštof, Vladimír、Šačkus, Algirdas
DOI:10.1002/ardp.202400282
日期:——
us to explore their photodynamic effects. The photodynamic properties of the example compound 8d were further investigated in breast cancer MCF-7 cells. Evaluation revealed comparable anticancer activities of 8d in both breast and melanoma cancer cell lines within the submicromolar range. The treatment induced a massive generation of reactive oxygen species, leading to different types of cell death
Synthesis and characterization of novel biheterocyclic compounds from <scp>3‐alkoxy‐1<i>H</i></scp>‐pyrazole‐4‐carbaldehydes via multicomponent reactions
Several series of novel biheterocyclic compounds have been synthesized starting from 3-alkoxy-1H-pyrazole-4-carbaldehydes and employing different types of multicomponentreactions. The structures of the obtained 4-(pyrazol-4-yl)pyrano[2,3-c]pyrazole, 4-(pyrazol-4-yl)pyrazolo[4′,3′:5,6]pyrano[2,3-b]quinoline, 4-(pyrazol-4-yl)pyridine, and 4-[(pyrazol-4-yl)methylidene]-1,2-oxazole derivatives were thoroughly
以3-烷氧基-1H-吡唑-4-甲醛为原料,采用不同类型的多组分反应,合成了一系列新型双杂环化合物。所得4-(吡唑-4-基)吡喃并[2,3-c]吡唑、4-(吡唑-4-基)吡唑并[4',3':5,6]吡喃[2,3]的结构-b]喹啉、4-(吡唑-4-基)吡啶和4-[(吡唑-4-基)亚甲基]-1,2-恶唑衍生物经过详细的核磁共振波谱 (NMR) 彻底表征和确认、高分辨率质谱 (HRMS)、红外光谱 (IR) 和 X 射线分析。