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Journal of Asian Natural Products Research Volume 8, 2006 - Issue 4
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Original Articles

Urceolatol, a tetracyclic bromobenzaldehyde dimer from Polysiphonia urceolata

Note

Q.-W. Liu Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China
,
C.-H. Tan Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, State Key Laboratory of Drug Research, Shanghai, 201203, China
,
T. Zhang Shandong Engineering Research Center for Natural Drugs, Yantai, 264003, China
,
S.-J. Zhang Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, State Key Laboratory of Drug Research, Shanghai, 201203, China
,
L.-J. Han Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
,
X. Fan Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
&
D.-Y. Zhu Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, State Key Laboratory of Drug Research, Shanghai, 201203, ChinaCorrespondence[email protected]
 show all
Pages 379-383 | Received 15 Oct 2004, Accepted 11 Jan 2005, Published online: 04 Sep 2006
 
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Abstract

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.

Acknowledgements

This research was financially supported by the National “863” project (Grant Nos. 2004AA625030 and 2001AA620503) and supported by Key Innovative Project of the Academy (KZCX3-SW-215).

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