A new phlorotannin from the brown alga Ecklonia stolonifera.
A new phlorotannin, named eckstolonol (1), was isolated from the EtOAc soluble fraction of the methanolic extract of the brown alga, Ecklonia stolonifera OKAMURA, along with three known phlorotannins, eckol (2), phlorofucofuroeckol A (3), and dieckol (4). The structure of eckstolonol was identified as 5,8,13,14-tetraoxa-pentaphene-1,3,6,9,11-pentaol on the basis of spectroscopic evidence. The new compound was found to be a radical scavenger on the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical.
Kang
Hye Sook
HS
Faculty of Food Science and Biotechnology, Pukyong National University, Busan, Korea.
Chung
Hae Young
HY
Jung
Jee Hyung
JH
Son
Byeng Wha
BW
Choi
Jae Sue
JS
D000459:Phaeophyceae; D013634:Tannins / Q000737:chemistry* / Q000302:isolation & purification*
D013634:Tannins