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Synthesis of the optically pure 5,5″-dihydroxy-7,7″-dimethoxy-8,8″-biflavone and its derivatives

✍ Scribed by Fang-Jie Zhang; Guo-Qiang Lin

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
525 KB
Volume
15
Category
Article
ISSN
0256-7660

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✦ Synopsis

Abstract

( ± )‐5,5″‐Dihydroxy‐7,7″‐dimethoxy‐8,8″‐biflavone (( ± )‐l) was resolved into its optically pare forms via the formation and recrystallization of its (2__R__)‐ and (2__S__)‐1‐(4‐toluenesulfonyl)prolylate, and the methylated derivatives of (+)‐ and (‐)‐1 were also prepared. The absolute configurations of all these 8,8″‐biflavones have been confirmed by their CD spectra.

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