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| Studies on the synthesis of some new biflavanoids——Ⅶ.Synthesis and structures of 2,2″-biflavanones | |
| 摘 要： | A new approach to the synthesis of 2,2″-biflavanones by the reductive dimerization of fla-vones is reported.The products,the racemate and meso biflavanones,have been separated and theirstructures have been determined on the basis of their spectral data.The configuration of 3b has beendetermined by X-ray crystallography as well. |
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