Premium
A new coumarin from Perezia hebeclada
Author(s) -
HernándezCarlos Beatriz,
BurgueñoTapia Eleuterio,
JosephNathan Pedro
Publication year - 2003
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1284
Subject(s) - chemistry , coumarin , methanol , residue (chemistry) , sugar , stereochemistry , two dimensional nuclear magnetic resonance spectroscopy , organic chemistry
Methanol extracts from Perezia hebeclada roots yielded the new 8‐β‐ D ‐glucopyranosyloxy‐4‐methoxy‐5‐methylcoumarin ( 1 ) together with the known 4‐β‐ D ‐glucopyranosyloxy‐5‐methylcoumarin ( 2 ). Their structures were determined and verified, respectively, by MS and NMR studies, including 1D and 2D experiments. Two 13 C NMR signals of the sugar residue of 2 were reassigned. Copyright © 2003 John Wiley & Sons, Ltd.