Ultrasound promoted synthesis of N-(substituted phenyl)-2-(7‑hydroxy-4-methyl-2H-chromen-2-ylidene)hydrazine-1-carboxamides as cytotoxic and antioxidant agents
作者:Amena Ali、Abuzer Ali、Mohammed Afroz Bakht、Mohamed Jawed Ahsan
DOI:10.1016/j.molstruc.2021.130452
日期:2021.8
New N-(substituted phenyl)-2-(7-hydroxy-4-methyl-2H-chromen-2-ylidene)hydrazine-1-carboxamides (5a-l) was synthesized in two steps using environmentally friendly ultrasound irradiation. The first step involved solvent free synthesis of 7-hydroxy-4-methyl-2H-chromen-2-one (3) by using catalytic amount (10% mol) of FeCl3. The second step involved condensation of intermediate 3 and hydrazine carboxamide
使用环境友好的超声波辐照分两步合成了新的N-(取代的苯基)-2-(7-羟基-4-甲基-2H-铬-2-亚甲基)肼-1-羧酰胺(5a-1)。第一步涉及通过使用催化量(10%摩尔)的FeCl 3来无溶剂合成7-羟基-4-甲基-2 H-铬-2-(1)。第二步涉及在超声波的作用下,在水-乙醇(2:1)溶剂系统中,将中间体3与肼甲酰胺HCl类似物(4a-1)缩合,以高收率获得标题化合物(5a-1)。制备的化合物的结构(5a-1由光谱研究证实。此处描述的合成策略具有许多优点,包括操作简单,反应时间短,转化率高。在10 µM的60种NCI癌细胞系和N-(4-氯苯基)-2-(7-羟基-4-甲基-2 H-色烯-2-亚甲基)肼-1-羧酰胺上对细胞毒性进行了测试(5b)表现出令人鼓舞的活性,对CCRF-CEM,UO-31,RPMI-8226,NCI-H522和HL-60(TB)具有最大敏感性,分别具有17.50、79