A new p-hydroxyphenylacetyl flavonoid, diosmetin 7-(6''-O-p-hydroxyphenylacetyl)-O-beta-d-glucopyranoside (1), was isolated from the flowers of Chrysanthemum morifolium Ramat. 'huaiju' cv. nov. (Compositae), together with five known flavonoids, luteolin (2), diosmetin (3), diosmetin 7-O-beta-d-glucopyranoside (4), diosmin (5), and scolimoside (6), and four known caffeoylquinic acid derivatives,...

A new neolignan glycoside, (7R,8R)-7,8-dihydro-9'-hydroxyl-3'-methoxyl- 8-hydroxymethyl-7-(4-hydroxy-3-methoxyphenyl)-1'-benzofuranpropanol 9'-O-beta-D- glucopyranoside (1) was isolated from the leaves of Acer truncatum along with (7R,8R)-7,8-dihydro-9'-hydroxyl-3'-methoxyl-8-hydroxymethyl-7-(4-O-alpha-L-rhamno- pyranosyloxy-3-methoxyphenyl)-1'-benzofuranpropanol (2), schizandriside (3), lyonir...

To check the influence of the conservation procedure in the chemical composition of chanterelle mushroom, phenolic compounds and organic acids of samples preserved under four different conditions (drying, freezing, conservation in olive oil and in vinegar) were determined. Phenolics and organic acids were analyzed by HPLC-DAD and HPLC-UV, respectively. The results showed that chanterelle is cha...

Phytochemical investigation of the natural products from Xanthium strumarium led to the isolation of fourteen compounds including seven caffeoylquinic acid (CQA) derivatives. The individual compounds were screened for inhibition of α-glucosidase, protein tyrosine phosphatase 1β (PTP1β), advanced glycation end products (AGEs), and ABTS⁺ radical scavenging activity using in vitro assays. Among th...

Bioactive-directed fractionation of n-butanol extract from fresh fruits of Randia siamensis led to isolate of 4 new pseudoginsenoside compounds: pseudoginsenosides-RT2, -RT3, RT4 and -RT5, together with 7 known compounds: tyramine, pseudoginsenosides-RT1 methyl ester, pseudoginsenosides-RT1, pseudoginsenoside-RP1, kaempferol-3-O-β-D-xylose(1-2)-βgalactose, kaempferol-3-O-β-D-galactose, and 5-O...

Nitric oxide (NO) produced by endothelial nitric-oxide synthase (eNOS) represents an antithrombotic and anti-atherosclerotic principle in the vasculature. Hence, an enhanced expression of eNOS in response to pharmacological interventions could provide protection against cardiovascular diseases. In EA.hy 926 cells, a cell line derived from human umbilical vein endothelial cells (HUVECs), an arti...