Yoshimura Morio, Amakura Yoshiaki, Tokuhara Mie, Yoshida Takashi
Department of Pharmacognosy, College of Pharmaceutical Sciences, Matsuyama University, 4-2 Bunkyo-cho, Matsuyama, Ehime, 790-8578, Japan.
J Nat Med. 2008 Jul;62(3):366-8. doi: 10.1007/s11418-008-0251-2. Epub 2008 Apr 16.
Four hydrolyzable tannins [oenothein B (1), eugeniflorin D(2) (2), and tellimagrandins I (3) and II (4)], two related polyphenolic compounds [gallic acid (5) and quinic acid 3,5-di-O-gallate (6)], and four myricetin glycosides [myricetins 3-O-beta-D-xyloside (7), 3-O-beta-D-galactoside (8), 3-O-beta-D-galactoside 6''-O-gallate (9), and 3-O-alpha-L-rhamnoside (10)] were isolated from the leaves of Myrtus communis. Antioxidant activities of the isolated compounds were evaluated by 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay.
从香桃木的叶子中分离出了四种可水解单宁[oenothein B (1)、eugeniflorin D (2)、tellimagrandins I (3)和II (4)]、两种相关的多酚化合物[没食子酸(5)和奎尼酸3,5 -二 - O -没食子酸酯(6)]以及四种杨梅素糖苷[杨梅素3 - O -β - D -木糖苷(7)、3 - O -β - D -半乳糖苷(8)、3 - O -β - D -半乳糖苷6'' - O -没食子酸酯(9)和3 - O -α - L -鼠李糖苷(10)]。通过1,1 -二苯基 - 2 -苦基肼基(DPPH)自由基清除试验评估了分离出的化合物的抗氧化活性。
