Water-soluble constituents from the leaves of Ilex oblonga.
Four new water-soluble constituents, oblongaroside A (1), oblongar ester A (2), oblongaroside B (3), and oblongaroside C (4), were isolated along with four known compounds: 4-O-beta-D-glucopyranosyl-3-hydroxybenzalcohol (5), 7-methoxyl-4-O-beta-D-glucopyranosyl-3-hydroxybenzalcohol (6), 4-O-beta-D-glucopyranosyl-3-hydroxybenzoic acid (7), and 3,4-dihydroxybenzoic acid (8) from the leaves of Ilex oblonga. Identification of their structures was achieved by 1D and 2D NMR experiments, including (1)H-(1)H COSY, NOESY, HMQC, and HMBC methods and FAB mass spectral data.
Ouyang
M-A
MA
Department of Bio-engineering and Technology, Huaqiao University, Quanzhou 362011, Fujian, P. R. China. maouyang@hqu.edu.cn
Wang
C-Z
CZ
Wang
S-B
SB
D002109:Caffeic Acids / Q000737:chemistry / Q000302:isolation & purification*; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D062385:Hydroxybenzoates / Q000737:chemistry / Q000302:isolation & purification*; D030017:Ilex / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D018515:Plant Leaves / Q000737:chemistry*
C525319:3-O-caffeoyl-2-methyl-1-butene; C525320:3-O-caffeoyl-2-methyl-1-butene-4-O-glucopyranoside; C525318:3-hydroxy-2-methyl-1-butene-4-O-glucopyranoside; C525321:4-O-glucopyranosyl-3-hydroxybenzalcohol-7-O-3,4-dihydroxybenzoic acid; D002109:Caffeic Acids; D005960:Glucosides; D062385:Hydroxybenzoates