5 Výsledek
Extraction of phenolics from Idesia polycarpa defatted fruit residue was optimized by the maximization of the yield in total phenolics, using the response surface methodology. The optimized conditions were 50% ethanol, 5 h extraction time, 1 : 40 liquid to solid ratio, and 80°C extraction
Phytochemical investigation on the ethyl acetate extract of Idesia polycarpa Maxim. Leaves led to the isolation of four phenolic glycoside isomers (1-4). Compound 2 appeared to be new reported phenolic glycoside, while compound 1 was the first time isolated from the
We established an efficient method using high-speed counter-current chromatography (HSCCC) combined with preparative high-performance liquid chromatography (prep-HPLC) for isolating and purifying phenolic glycoside isomers. The method involves a rapid and sensitive ultra-performance liquid
Two new phenolic glycosides characterized as idesin salicylate (1) and 2-hydroxyphenol-1-O-beta-D-glucopyranosyl-(6-->1)- alpha-L-rhamnopyranoside (2) were isolated with four known compounds, idescarpin (3), idesin (4), 1-hydroxy-6-oxocyclohex-2-enecarboxylic acid methyl ester (5) and salirepin (6),
Phytochemical investigation of Idesia polycarpa (Salicaceae) resulted in the structure elucidation of nine previously undescribed phenolic natural products along with six known compounds. The compounds are structurally related to salicinoids that are known defense compounds from Salix and Populus