A new arbutin derivative from the leaves of <i>Vaccinium dunalianum</i> wight

<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

Additional file 1: of Characterizing a large outbreak of dengue fever in Guangdong Province, China

Multilingual abstracts in the five official working languages of the United Nations. (PDF 299 kb

Additional file 2: Figure S1. of Characterizing a large outbreak of dengue fever in Guangdong Province, China

Heat map of imported dengue cases by city and week in Guangdong Province in 2014. A indicates the Pearl River Delta Region; B labels the non-Pearl River Delta Region. The number of weekly cases was standardized by the number of total cases. (PDF 9 kb