title: A new chromone from Ficus lyrata.
abstract: A new chromone, named 5,6-dihydroxy-2-methylchromone (FL-2), along with seven known flavonoids, 5-hydroxy-7,3,3',4'-tetramethoxyflavone (FL-3), 5,4'-dihydroxy-6,7,8-trimethoxyflavone (FL-4), 5,4'-dihydroxy-7,8-dimethoxyflavone (FL-5), 4-methoxychalcone (FL-6), 7,4'-dimethoxyapigenin (FL-7), 5,7,4'-trihydroxy-2',3',6'-trimethoxyisoflavone (FL-8 a rare flavonoid), acacetin-7-O-glucoside (FL-9) and acacetin-7-O-neohesperidoside (FL-10), and beta-sitosterol-D-glucoside (FL-1) have been isolated from the leaves of Ficus lyrata. Their structures have been established on the basis of chemical and spectral evidence (IR, UV, 1H NMR, 13C NMR and mass spectra).
authors.affiliation: Department of Chemistry, Aligarh Muslim University, Aligarh-202002 (U.P.), India. omer_basudan@yahoo.com
authors.forename: Omer A
authors.initials: OA
authors.lastname: Basudan
authors.forename: M
authors.initials: M
authors.lastname: Ilyas
authors.forename: M
authors.initials: M
authors.lastname: Parveen
authors.forename: Hasan M H
authors.initials: HM
authors.lastname: Muhisen
authors.forename: Rakesh
authors.initials: R
authors.lastname: Kumar
mesh_terms: D002867:Chromones / Q000737:chemistry / Q000302:isolation & purification*; D030681:Ficus / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy
chemical_list: C497273:5,6-dihydroxy-2-methylchromone; D002867:Chromones