<p>A new arbutin derivative, namely dunalianosides J (<b>1</b>), along with six known compounds, arbutin (<b>2</b>), robustaside A (<b>3</b>), 6′-<i>O</i>-caffeoylarbutin (<b>4</b>), dunalianoside D (<b>5</b>), kaempferol 3-<i>O</i>-<i>β</i>-D-glucopyranoside (<b>6</b>) and kaempferol 3-<i>O</i>-<i>β</i>-D-sambubioside (<b>7</b>) were isolated from the leaves of <i>Vaccinium dunalianum</i> Wight (Ericaceae). The structure of <b>1</b> was elucidated by extensive 1D and 2D NMR, HR-MS and CD spectroscopic analyses. In which, kaempferol 3-<i>O</i>-<i>β</i>-D-sambubioside (<b>7</b>) was isolated from the genus <i>Vaccinium</i> for the first time.</p
