作者:Jun Mori、Makoto Iwashima、Hiroko Wakasugi、Haruo Saito、Takayuki Matsunaga、Masaru Ogasawara、Satoshi Takahashi、Hideyo Suzuki、Toshimitsu Hayashi
DOI:10.1248/cpb.53.1159
日期:——
Four new plastoquinones were isolated from the methanolic extract of the brown alga, Sargassum micracanthum. Their structures were elucidated based on spectroscopic analysis and chemical conversions from 2-geranylgeranyl-6-methyl-1,4-benzohydroquinone. These plastoquinones exhibited significant antioxidant activities such as an inhibitory effect on lipid peroxidation and a radical scavenging effect on 1,1-diphenyl-2-picrylhydrazyl (DPPH). Some of the new plastoquiones showed cytotoxic activity against cancer cell line.
从褐藻马尾藻的甲醇提取物中分离出四种新的质醌。根据光谱分析和从 2-geranylgeranyl-6-甲基-1,4-苯并对苯二酚的化学转化,阐明了它们的结构。这些质醌具有显著的抗氧化活性,如对脂质过氧化的抑制作用和对 1,1-二苯基-2-苦基肼(DPPH)的自由基清除作用。一些新的塑醌类化合物对癌细胞线具有细胞毒性活性。