Abstract
Ten new salicyloid derivatives, namely vaccinols J–S (1−10), along with five known compounds (11–15) were isolated from Pestalotiopsis vaccinii (cgmcc3.9199) endogenous with the mangrove plant Kandelia candel (L.) Druce (Rhizophoraceae). Their structures including absolute configurations were established on the basis of spectroscopic analysis, optical rotation, CD spectra, quantum ECD calculations. To the best of our knowledge, vaccinol J (1) is the first example of salicyloid derivatives containing 2-methylfuran moiety. All of the new compounds were tested for their anti-enterovirus 7l (EV71) and cytotoxic activities. Among them, vaccinol J (1) exhibited in vitro anti-EV71 with IC50 value of 30.7μM (IC50 177.0μM for the positive control ribavirin).
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