title: Prenylated isoflavones from Flemingia philippinensis.
abstract: Two new prenylated isoflavones, named flemiphilippinins E and F, were isolated from the roots of Flemingia philippinensis, together with six known ones. The structures of the above compounds were established by spectroscopic methods. Flemiphilippinins E and F were identified as 5,4'-dihydroxy-8-(3,3-dimethylallyl)-6'',6''-dimethyl-5''-(1,1-dimethylallyl) pyrano(2'',3'':7,6)isoflavone and 5,4'-dihydroxy-4'',4'',5''-trimethyl-4'',5''-dihydrofurano(2'',3'':7,8) isoflavone, respectively, by a combination of HR-EI-MS, (1)H NMR, (13)C NMR, HMQC, HMBC, and NOESY spectra.
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, PR China.
authors.forename: Hua
authors.initials: H
authors.lastname: Li
authors.forename: Meihua
authors.initials: M
authors.lastname: Yang
authors.forename: Jianhua
authors.initials: J
authors.lastname: Miao
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Ma
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D007529:Isoflavones / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D013058:Mass Spectrometry; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D054876:Prenylation; D013057:Spectrum Analysis; D013729:Terpenes / Q000737:chemistry
chemical_list: D004365:Drugs, Chinese Herbal; D007529:Isoflavones; D013729:Terpenes