Journal
CHEMICAL & PHARMACEUTICAL BULLETIN
Volume 50, Issue 5, Pages 685-687Publisher
PHARMACEUTICAL SOC JAPAN
DOI: 10.1248/cpb.50.685
Keywords
Gymnaster koraiensis; polyacetylene glycoside; modified Mosher's method
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Two polyacetylene glycosides, gymnasterkoreasides A and B, were isolated from the roots of Gymnaster koraiensis. Their structures were elucidated to be (3R)-8-decene-4,6-diyne-1,3-diol 1-O-beta-D-glucopyraside and (3R)8-decene-4,6-diyne-1,3-diol 1-O-beta-D-apiofuranosyl-(1-->6)-beta-D-glucopyraside on the basis of spectroscopic analysis including COSY, HMQC, and HMBC experiments, as well as chemical methods, which confirmed the determination of a chiral center by the modified Mosher's method.
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