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ChemInform Abstract: Synthesis, Resolution, and Absolute Configuration of Optically Pure 5, 5′′-Dihydroxy-4′,4′′′,7,7′′-tetramethoxy-8,8′′-biflavone and Its Derivatives.

✍ Scribed by F.-J. ZHANG; G.-Q. LIN; Q.-C. HUANG

Book ID
112028268
Publisher
John Wiley and Sons
Year
2010
Weight
30 KB
Volume
27
Category
Article
ISSN
0931-7597

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## 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 abso