The bark of Lespedeza cyrtobotrya MIQ. afforded a new chalcone, lespeol (I), together with xanthoangelol (II). The heartwood of Lespedeza cyrtobotrya MIQ. afforded two new isoflav-3-ens, haginin A (IIIa) and B (IVa), together with genistein, daidzein, dalbergioidin, 3, 9-dihydroxypterocarp-6a-en and isoliquiritigenin. The structures were estab-lished on the basis of chemical and spectral data.
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Miyase et al. (1980) studied this question.
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