An Improved Method for the Quaternization of Nicotinamide and Antifungal Activities of Its Derivatives
作者:Tamara Siber、Valentina Bušić、Dora Zobundžija、Sunčica Roca、Dražen Vikić-Topić、Karolina Vrandečić、Dajana Gašo-Sokač
DOI:10.3390/molecules24061001
日期:——
nicotinamide, with different electrophiles: methyl iodide and substituted 2-bromoacetophenones (4-Cl, 4-Br, 4-H, 4-CH3, 4-F, 4-OCH3, 4-Ph, 2-OCH3, 4-NO2) are reported. The preparations were carried out by conventional synthesis and under microwave irradiation in absolute ethanol and acetone. The synthesis performed by microwave dielectric heating significantly improved yield, up to 8 times, and shortened down
烟酰胺与不同亲电子试剂的季铵化反应:碘甲烷和取代的 2-溴苯乙酮(4-Cl、4-Br、4-H、4-CH3、4-F、4-OCH3、4-Ph、2-OCH3、 4-NO2) 报道。通过常规合成和在无水乙醇和丙酮中在微波辐射下进行制备。通过微波介电加热进行的合成显着提高了产率,最高可达 8 倍,并将反应时间从大约 1 倍缩短。一天的常规,到 10-20 分钟。合成化合物的结构经IR、1H-和13C-NMR光谱、质谱和元素分析证实。这些化合物已在 10 µg/mL 和 100 µg/mL 的浓度下筛选出对尖孢镰刀菌、小镰刀菌、Macrophomina phaseolina 和核盘菌的抗真菌活性。六种化合物在 10 µg/mL 的浓度下显示出强烈的菌丝生长抑制作用。所有测试的化合物在 100 µg/mL 的浓度下都显示出对核盘菌的巨大抑制活性。