Velucarpins A–C, three new pterocarpans and their cytotoxicity from the roots of Dalbergia velutina

Three new pterocarpans, named velucarpins A–C (1–3), along with three known pterocarpans (4–6) were isolated from the roots of Dalbergia velutina. Their structures were determined by spectroscopic analysis. All isolated compounds were evaluated for their cytotoxicity against KB and HeLa cell lines. Compounds 3 and 5 showed good cytotoxicity against KB and HeLa cells with IC50 values of 8.22, 8.09 μM and 5.99, 8.69 μM, respectively.

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