Urceolatol, a tetracyclic bromobenzaldehyde dimer from Polysiphonia urceolata |
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| Authors: | Liu Q-W Tan C-H Zhang T Zhang S-J Han L-J Fan X Zhu D-Y |
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| Affiliation: | a Graduate School of the Chinese Academy of Sciences, Beijing, Chinab State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, Chinac Shandong Engineering Research Center for Natural Drugs, Yantai, Chinad Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 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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