Journal
PHYTOCHEMISTRY
Volume 58, Issue 8, Pages 1239-1244Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0031-9422(01)00365-X
Keywords
Eugenia jambolana; Myrtaceae; leaves; acylated flavonol glycosides; ID and 2D NMR; ESI-MS
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Two acylated flavonol glycosides and 15 known polyphenols have been isolated and identified from the leaves of Eugenea jambolana Lam. The structures of the new compounds were identified as 3-O-(4 -O-acetyl)-alpha -L-rhamnopyranoside of mearnsetin (myricetin 4'-methyl ether) and myricetin 3-O-(4 -O-acetyl-2 -O-galloyl)-alpha -L-rhamnopyranoside. The complete structure elucidation of all isolated metabolites based on chemical and spectroscopic methods of analysis (UV, 1D and 2D NMR) as well as negative ESI-MS with and without CID in-source fragmentation. (C) 2001 Elsevier Science Ltd. All rights reserved.
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