Selective 1O2 quenchers, oligostilbenes, from Vitis wilsonae: Structural identification and biogenetic relationship

► HPLC/ESI-MSn-guided isolation has been utilized to obtain compounds of different molecular masses. ► Four compounds including a biomimetic one were obtained from Vitis wilsonae. ► A biogenetic transformation has been achieved by HRP-H2O2, acid, and UV irradiation treatment. ► The compounds showed selective quenching effects towards 1O2 compared with less effect on O2·− and OH. ► The compounds showed potent inhibitory effects in response to oxidative stress caused by 1O2.