title: Acylated flavonol glycosides from Eugenia jambolana leaves.
abstract: Two acylated flavonol glycosides and 15 known polyphenols have been isolated and identified from the leaves of Eugenca 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.
authors.affiliation: Pharmacognosy Department, Faculty of Pharmacy, Helwan University, Helwan, Cairo, Egypt.
authors.forename: I I
authors.initials: II
authors.lastname: Mahmoud
authors.forename: M S
authors.initials: MS
authors.lastname: Marzouk
authors.forename: F A
authors.initials: FA
authors.lastname: Moharram
authors.forename: M R
authors.initials: MR
authors.lastname: El-Gindi
authors.forename: A M
authors.initials: AM
authors.lastname: Hassan
mesh_terms: D000215:Acylation; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D044948:Flavonols; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D011108:Polymers / Q000737:chemistry / Q000302:isolation & purification; D027842:Syzygium / Q000737:chemistry*
chemical_list: D005419:Flavonoids; D044948:Flavonols; D010636:Phenols; D011108:Polymers