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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 24, Number 10
BKCSDE 24(10)
October 20, 2003 

 
Title
A New Monoterpene Glucoside from Portulaca oleracea
Author
Youngwan Seo, Jongheon Shin, Hyo Jun Cha, You-Ah Kim, Jong-Woong Ahn, Burm-Jong Lee, Dong Seok Lee
Keywords
Portulaca oleracea, Portuloside B, Monoterpene glucosides, Linalool
Abstract
Three monoterpene glucosides (1-3), including one new compound (3), have been isolated from the methanol extract of Portulaca oleracea. Structures of these compounds were determined to be (3S)-3-O-( β-Dglucopyranosyl)-3,7-dimethylocta-1,6-dien-3-ol (1), (3S)-3-O-( β-D-glucopyranosyl)-3,7-dimethylocta-1,5-dien-3,7-diol (2) and (3S)-3-O-( β-D-glucopyranosyl)-3,7-dimethyl-7-hydroperoxyocta-1,5-dien-3-ol (3), respectively, by a combination of spectral analyses. Their stereochemistries were established by measurement of NOE and vicinal proton-proton coupling constants as well as comparisons of spectral data with those of previously related compounds.
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