A new bischromanone from the stems of <i>Semecarpus caudata</i> Phu H. Dang Tinh T. Nguyen Tho H. Le Hai X. Nguyen Mai T. T. Nguyen Nhan T. Nguyen 10.6084/m9.figshare.5584243.v1 https://tandf.figshare.com/articles/journal_contribution/A_new_bischromanone_from_the_stems_of_i_Semecarpus_caudata_i_/5584243 <p>From an CHCl<sub>3</sub>-soluble fraction of the stems of <i>Semecarpus caudata</i>, one new bischromanone named semecarpanone (<b>1</b>), together with 5 known flavonoids (<b>2</b>–<b>6</b>) were isolated. Their structures were elucidated based on interpretation of spectroscopic data. The stereo-configuration of <b>1</b> was identified based on the calculated and experimental coupling constants. Compounds <b>4</b>–<b>6</b> showed potent tyrosinase inhibitory activity with the IC<sub>50</sub> values ranging from 15.0 to 76.3 μM.</p> 2017-11-09 07:16:09 Semecarpus caudata Anacardiaceae bischromanone tyrosinase inhibitory