The first direct transformation of 2,2′-dihydroxychalcones into coumestans

Add time:07/27/2019    Source:sciencedirect.com

Three coumestans, flemichapparin, medicagol and sophoracoumestan B, are synthesised by direct reaction of the analogous 2,2′-dihydroxychalcones with thallium(III) nitrate in methanol.

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