Two new acylated flavonol glycosides from Vicia amurensis.
Two new acylated flavonol glycosides, named amurenosides A and B, together with quercetin 3-(2,6-di-O-alpha-rhamnopyranosyl-beta-galactopyranoside), have been isolated from the whole plant of Vicia amurensis. Their structures were elucidated as quercetin 3-O-alpha-L-(3-feruloylrhamnopyranosyl)(1-->6)-[alpha-L-rhamnopyra nosyl(1-->2)]-beta-D-galactopyranoside and quercetin 3-O-alpha-L-(2-feruloylrhamnopyranosyl)(1-->6)-[alpha-L-rhamnopyra nosyl(1-->2)]-beta-D-galactopyranoside on the basis of various NMR techniques, FAB mass spectrometry and chemical reactions.
Kang
S S
SS
Natural Products Research Institute, Seoul National University, Korea. sskang@plaza.snu.ac.kr
Chang
Y S
YS
Kim
J S
JS
D000215:Acylation; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D010944:Plants / Q000737:chemistry*; D011794:Quercetin; D013057:Spectrum Analysis
D005419:Flavonoids; D006027:Glycosides; C417235:amurenoside A; C417236:amurenoside B; D011794:Quercetin