A series of 3-acylhydrazono-4-hydroxycoumarins were synthesized via condensation of 3-acetyl-4-hydroxycoumarin with appropriate hydrazides. The structures of the newly-synthesized compounds were characterized by spectral and elememental analysis or HRMS measurements. Their antioxidant properties were evaluated by using scavenging effects on 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical as well as inhibition of lipid peroxidation. Moreover, their ability to inhibit in vitro soybean lipoxygenase has been investigated. They were found to be capable of rapid inactivation of alkylperoxy radicals.
一系列3-酰
肼基-
4-羟基
香豆素通过将3-乙酰-
4-羟基
香豆素与相应的
肼化合物缩合合成。新合成化合物的结构通过光谱分析、元素分析或高分辨质谱(HRMS)测定进行了表征。它们的抗氧化性质通过对2,2
-二苯基-1-皮克基
肼(
DPPH)自由基的清除效果以及对脂质过氧化的抑制进行了评估。此外,研究了它们在体外抑制大豆脂氧合酶的能力。结果发现,它们能够迅速失活烷基过氧自由基。