Urceolatol,a tetracyclic bromobenzaldehyde dimer from Polysiphonia urceolata |
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| Authors: | Q.-W. Liu C.-H. Tan T. Zhang S.-J. Zhang L.-J. Han X. Fan |
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| Affiliation: | 1. Graduate School of the Chinese Academy of Sciences , Beijing, 100039, China;2. Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, State Key Laboratory of Drug Research , Shanghai, 201203, China;3. Shandong Engineering Research Center for Natural Drugs , Yantai, 264003, China;4. Institute of Oceanology, Chinese Academy of Sciences , Qingdao, 266071, China |
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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. |
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| Keywords: | Urceolatol Polysiphonia urceolata Rhodomelaceae Red alga |
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