Journal
PHYTOCHEMISTRY
Volume 65, Issue 3, Pages 351-358Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2003.11.012
Keywords
Inga umbellifera; Fabaceae; young leaf secondary chemistry; acetylated flavan-3-ol glycoside; acetylated procyanidin glycoside; cinnamoyl glycoside
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The rapidly growing, nearly achlorophyllous, young leaves of Inga umbellifera express high concentrations of mono and dimeric 3-O-gluco-cinnamoyl catechin/epicatechin, rare forms of substituted flavan-3-ols. Here we present structures for five novel compounds in this class: three monomers [catechin-3-O-beta-D-gluco(2-cinnamoyl)pyranoside, catechin-3-O-beta-D-gluco(6-cinnamoyl) pyranoside, catechin-3-O-beta-D-gluco(2,6-biscinnamoyl)pyranoside] and two dimeric procyanidins [catechin-3-O-beta-D-glucopyrano(4alpha-->8)-catechin-3-O-beta-D-gluco(2-cinnamoyl)pyranoside and catechin-3-O-beta-D-glucopyrano-(4alpha-->8)-epicatechin-3-O-beta-D-gluco(6-cinnamoyl)pyranoside]. The young leaves of Inga umbellifera express high concentrations of 3-O-(cinnamoyl)glucosides of catechin and epicatechin. (C) 2004 Elsevier Ltd. All rights reserved.
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