Urceolatol, a tetracyclic bromobenzaldehyde dimer from Polysiphonia urceolata.
作者： Q.-W. Liu , C.-H. Tan , T. Zhang , S.-J. Zhang , L.-J. Han
DOI: 10.1080/10286020500172269
关键词:
摘要: 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 elucidated to be (5R,10R)-2,7-dibromo-3,8-dihydroxy-5,10-dimethoxyl-5,10-dihydrochromeno[5,4,3-cde]chromene, on basis spectroscopic techniques X-ray diffraction analysis.
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