STRUCTURE OF KUWANON P, A NEW DIELS-ALDER TYPE ADDUCT FROM THE ROOT BARK OF THE CULTIVATED MULBERRY TREE (MORUS LHOU (SER.) KOIDZ.)

抄録

From the ethyl acetate extract of the root bark of cultivated mulberry tree (Morus Lhou (ser.) Koidz.), a new stilbene derivative with a fused dihydrochalcone partial moiety was isolated and named kuwanon P. The structure was shown to be 1 on the basis of spectral data. Kuwanon P (1) is regarded biogenetically as a Diels-Alder type adduct of a chalcone derivative and a dehydroprenylstilbene derivative.