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Activity-guided fractionation of Euphorbia humifusa for anti-HBV activity led to the isolation of two novel sesquiterpenoids, named humifusane A (1) and humifusane B (2). Their structures were elucidated by spectral data to show that they have a caryophyllane-type precursor structure. The two new sesquiterpenoids showed anti-HBV activities through specifically inhibiting the secretion of HBsAg in...
Thirteen flavone glucosides from the herb of Euphorbia humifusa were isolated and elucidated. Among them, five compounds including apigenin-7-O-β-d-glucopyranoside (2), apigenin-7-O-(6′′-O-galloyl)-β-d-glucopyranoside (3), luteolin-7-O-β-d-glucopyranoside (7), luteolin-7-O-(6′′-O-trans-feruloyl)-β-d-glucopyranoside (8) and luteolin-7-O-(6′′-O-coumaroyl)-β-d-glucopyranoside (9) showed anti-HBV activity...
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