A general and convenient synthesis of 4-(tosylmethyl)semicarbazones and their use in amidoalkylation of hydrogen, heteroatom, and carbon nucleophiles
作者:Anastasia A. Fesenko、Alexander N. Yankov、Anatoly D. Shutalev
DOI:10.1016/j.tet.2019.130527
日期:2019.11
C-nucleophiles (sodium diethyl malonate) to give the corresponding products of the tosyl group substitution, 4-substituted semicarbazones, including analogues of nitrofurazone. Among the prepared compounds tested in vitro for antibacterial and antifungal activity, three nitrofuryl-containing semicarbazones exhibited high biological activities with minimum inhibitory concentration (MIC) values of 8–32 μg/mL
已经开发了一种普遍未知的,基于半脲酮的α-酰胺基烷基化试剂4-(甲苯磺酰基甲基)半咔唑酮的合成方法。合成涉及脂族或芳族醛的半咔唑与相同或其他醛和对甲苯亚磺酸的三组分缩合。研究了该反应的范围和局限性。已证明获得的化合物是有效的α-(4-半咔唑基)烷基化剂。它们与H-(硼氢化钠),O-(甲醇钠),S-(苯硫醇钠),N-(吡咯烷,琥珀酰亚胺钠),P-(亚磷酸三烷基酯)和C反应-亲核试剂(丙二酸二乙酯钠),得到甲苯磺酰基取代的相应产物,即4-取代的半咔唑酮,包括呋喃西林的类似物。在体外测试的制备的化合物的抗菌和抗真菌活性中,三种含硝基呋喃基的半咔唑酮具有很高的生物活性,最小抑菌浓度(MIC)值为8–32μg/ mL。