Dopaol 2-keto- and 2,3-diketoglycosides from Chelone obliqua.
Two unique 2-(3,4-dihydroxyphenyl)ethyl glycosides, namely, dopaol beta-D-2-ketoglucopyranoside and dopaol beta-D-2,3-diketoglucopyranoside, were isolated from Chelone obliqua together with the iridoid glucoside catalpol, dopaol beta-D-glucopyranoside, descaffeoylverbascoside, and verbascoside. Glycosides with a diketosugar have not so far been isolated from natural sources.
Franzyk
Henrik
H
Department of Chemistry, The Technical University of Denmark, DK-2800, Lyngby, Denmark.
Olsen
Carl Erik
CE
Jensen
Søren Rosendal
SR
D003718:Denmark; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D039823:Iridoids / Q000737:chemistry / Q000302:isolation & purification; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D028083:Scrophulariaceae / Q000737:chemistry*; D013237:Stereoisomerism
D005960:Glucosides; D006027:Glycosides; D039823:Iridoids; C488321:dopaol beta-D-2,3-diketoglucopyranoside; C488320:dopaol beta-D-2-ketoglucopyranoside