[Bromophenols from the brown alga Leathesia nana].
OBJECTIVE
To investigate the chemical constituents of the brown alga Leathesia nana.


METHODS
Compounds were isolated by normal phase silica gel, Sephadex LH-20 chromatography and reverse phase HPLC techniques. Their structures were elucidated with spectroscopic methods including IR, MS and NMR.


RESULTS
Six compounds were isolated from ethanolic extract of the brown alga L. nana and their structures were identified as 2,2',3,3'-tetrabromo-4,4',5,5'-tetrahydroxydiphenyl methane, 2,2',3-tribromo-3', 4,4', 5-tetrahydroxy-6'-ethyloxymethyldiphenyl methane, 2,3-dibromo-4,5-dihydroxybenzyl alcohol, 2,3-dibromo-4,5-dihydroxybenzyl methyl ether, 3-bromo-4-hydroxybenzoic acid and 2-bromo-4,5-dihydroxybenzaldehyde.


CONCLUSIONS
All these compounds were obtained from this species for the first time.
Xu
Xiu-Li
XL
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
Fan
Xiao
X
Song
Fu-Hang
FH
Shi
Jian-Gong
JG
D001559:Benzhydryl Compounds / Q000737:chemistry / Q000302:isolation & purification*; D000431:Ethanol; D000459:Phaeophyceae / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification*
C502377:2,2',3,3'-tetrabromo-4,4',5,5'-tetrahydroxydiphenyl methane; C502378:2,2',3-tribromo-3',4,4',5-tetrahydroxy-6'-ethyloxymethyldiphenyl methane; D001559:Benzhydryl Compounds; D010636:Phenols; D000431:Ethanol