Estrogenic constituents of the heartwood of Dalbergia parviflora

From the heartwood of Dalbergia parviflora, five compounds, dalparvin A and B, isodalparvinol A, dalparvinol C, and neokhriol A, along with 11 known compounds, were isolated and characterized. By evaluating their activity in human breast cancer cells, dalparvin B and isodalparvinol A stimulated both MCF-7 and T-47D cell proliferation, but no isolates showed significant effects on BT20.