Antioxidant Flavonols and Phenolic Compounds from <i>Atraphaxis frutescens</i> and Their Inhibitory Activities against Insect Phenoloxidase and Mushroom Tyrosinase
作者:Batsukh Odonbayar、Toshihiro Murata、Javzan Batkhuu、Kosho Yasunaga、Rina Goto、Kenroh Sasaki
DOI:10.1021/acs.jnatprod.6b00720
日期:2016.12.23
potent 1,1-diphenyl-2-picrylhydrazyl radical scavenging activities. To assess the effects of these antioxidants on biological enzymes, their inhibitory effects against an insect phenoloxidase and a mushroom tyrosinase were evaluated. This study indicated that insect phenoloxidase was inhibited by phenylpropanoid amides and that mushroom tyrosinase was inhibited by the characteristic 7-methoxyflavonol
的地上部分的化学调查木蓼属紫苏导致的五个7 methoxyflavonols与连苯三酚B-环部分(隔离1 - 5),一个非瑟酮葡糖苷(13),和苄糖苷(18),以及26种已知化合物,包括类黄酮,苯基丙烷类酰胺,蒽醌糖苷,木脂素和苄基衍生物。分离出的化合物的主要化学结构特征是邻苯三酚或邻苯二酚B环部分,它们显示出有效的1,1-二苯基-2-吡啶并肼基自由基清除活性。为了评估这些抗氧化剂对生物酶的作用,评估了它们对昆虫酚氧化酶和蘑菇酪氨酸酶的抑制作用。这项研究表明,昆虫苯酚氧化酶被苯基丙烷类酰胺所抑制,而蘑菇酪氨酸酶被特征性的7-甲氧基黄酮醇3- O-鼠李糖吡喃糖苷所抑制。