Abstract
Three undescribed acylated sucroses (1–3), one undescribed butenolide analog (4) along with three known compounds (5–7) were isolated from the aqueous EtOH extract of the dried leaves of Tripterygium wilfordii. Their structures were elucidated on the basis of spectroscopic analyses, electron circular dichroism (ECD) techniques, and saccharide hydrolysis. All the isolated compounds were tested for their anti-tyrosinase effects. Among them, 6 exhibited similar inhibitory effects on tyrosinase with IC50 values of 0.073 mM comparing to arbutin. Additionally, the possible mechanism of the interaction between 6 and the active site of tyrosinase was explored by molecular docking.
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