New depside from <i>Citrus reticulata</i> Blanco

<div><p>A new depside, named depcitrus A (<b>1</b>), and 31 known compounds were isolated from the peels, leaves and branch barks of <i>Citrus reticulata</i> Blanco. Methylation of the high polarity fractions from the branch barks and peels gave one new methylated compound named depcitrus B (<b>14</b>) and five known compounds. Their structures were established based on spectroscopic evidence. The antioxidant, antimicrobial and cytotoxic activities of some pure compounds were evaluated.</p></div

New alkylamide from the stems of <i>Zanthoxylum nitidum</i>

<p>A new alkylamide, named (2<i>E</i>,6<i>E</i>,8<i>E</i>)-<i>N</i>-(2-methylpropyl)-10-oxo-2,6,8-decatrienamide (<b>1</b>), together with 22 known compounds (<b>2–</b><b>23</b>), were isolated from the stems of <i>Zanthoxylum nitidum</i>. Their structures were elucidated by spectroscopic methods, including 1D and 2D NMR spectroscopy. The isolated compounds exhibited slightly antioxidant activities through DPPH and ABTS radical scavenging assays but showed no antibacterial activity against <i>Streptococcus mutans</i> ATCC2517, a dental caries causing bacteria.</p