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  • Title: Cucurbitane triterpenes from Hemsleya chinensis tubers and their anti-inflammatory activities.
    Author: Lian F, Chi J, Meng Q, Li Q, Chen A, Wang Z, Dai L.
    Journal: Fitoterapia; 2023 Apr; 166():105441. PubMed ID: 36736744.
    Abstract:
    Six new cucurbitane-type triterpenes, hemchinins A-F (1-6), together with thirteen known ones (7-19) were isolated from ethyl acetate extraction of Hemsleya chinensis tubers. Compounds 1-2 were a group of cucurbitane triterpenes possessing an infrequent pentacyclic framework. Their structures were established by comprehensive UV, IR, HRMS, 1D/2D NMR, and ECD analyses. Bioassay results showed that most isolated compounds exhibited anti-inflammatory actions, in which compounds 13 and 15 exhibited stronger activities at 6.25 μM, with NO inhibition rates of 49.00 ± 0.05% and 48.40 ± 0.10%, respectively.
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