Urceolatol, a tetracyclic bromobenzaldehyde dimer from Polysiphonia urceolata.
Urceolatol (1), a novel bromobenzaldehyde dimer, together with one known bromophenol, 3-bromo-4,5-dihydroxy-benzaldehyde (2), were isolated from the red alga Polysiphonia urceolata. The structure and absolute stereochemistry of 1 were elucidated to be (5R,10R)-2,7-dibromo-3,8-dihydroxy-5,10-dimethoxyl-5,10-dihydrochromeno[5,4,3-cde]chromene, on the basis of spectroscopic techniques and X-ray diffraction analysis.
Liu
Q-W
QW
Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China.
Tan
C-H
CH
Zhang
T
T
Zhang
S-J
SJ
Han
L-J
LJ
Fan
X
X
Zhu
D-Y
DY
D001547:Benzaldehydes / Q000737:chemistry* / Q000302:isolation & purification; D019281:Dimerization; D006576:Heterocyclic Compounds, 4 or More Rings / Q000737:chemistry* / Q000302:isolation & purification; D008958:Models, Molecular; D015394:Molecular Structure; D000461:Rhodophyta / Q000737:chemistry*
D001547:Benzaldehydes; D006576:Heterocyclic Compounds, 4 or More Rings; C517456:urceolatol