451. Identification of a sucrose diester of a substituted beta-truxinic acid in oats.
- Author
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Dimberg LH, Andersson RE, Gohil S, Bryngelsson S, and Lundgren LN
- Subjects
- Cyclobutanes chemistry, Cyclobutanes isolation & purification, Esters chemistry, Lignans chemistry, Lignans isolation & purification, Magnetic Resonance Spectroscopy, Mass Spectrometry, Sucrose chemistry, Sucrose metabolism, Avena chemistry, Esters isolation & purification
- Abstract
A novel compound, 4,4'-dihydroxy-3,3'-dimethoxy-beta-truxinic acid esterified to sucrose through the fructosyl 3-and 6-carbons (1), was isolated from oat grains (Avena sativa L.). Its structure was determined by a combination of mass spectrometry and 1-D and 2-D NMR. The amounts of 1 in groats of six different oat cultivars ranged from 101 to 150 microg g(-1) (dry wt). None was detected in the hulls. The free diacid, 4,4'-dihydroxy-3,3'-dimethoxy-beta-truxinic acid (2), could not be detected in groats nor in hulls. more...
- Published
- 2001
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