[Chemical constituents from the roots of Ilex pubescens].

OBJECTIVE

To study the chemical constituents from the roots of Ilex pubescens.

METHODS

The 95% ethanol extract of the plant was separated by silica gel, Sephadex LH-20 and preparative HPLC chromatography. The structures were elucidated based on the physiochemical properties and spectroscopic analysis.

RESULTS

Fifteen compounds were isolated and identified as oleuropein(1), oleoside dimethyl ester(2),8 (Z)-nuezhenide(3),3,4-dicaffeoylquinic acid methyl ester(4),3,4,5-tricaffeoylquinic acid methyl ester (5), isovanillic acid(6), syringic acid(7), 3beta-acetyloleanolic acid (8), 3beta-acetylursolic acid(9), uvaol(10), asiatic acid(11), 2alpha-hydroxyursolic acid(12), oleanolic acid (13), ursolic acid (14), stigmasterol-3-O-beta-D-glucopyranoside (15).

CONCLUSIONS

Compounds 2,3,8,9 are obtained from this genus for the first time,compounds 5-7,10-12 are isolated from this plant for the first time.