title: [Studies on the chemical constituents of Aquilaria sinensis (Lour.) Gilg. V. Isolation and characterization of three 2-(2-phenylethyl) chromone derivatives].
abstract: Three 2-(2-phenylethyl) chromone derivatives were isolated from the ethyl acetate soluble fraction of the alcoholic extract of Aquilaria sinensis (Lous.) Gilg. (Thymeleaceae) by silica gel chromatography. Based on spectral data (UV, IR, 1HNMR, 13CNMR and MS) two of them are new compounds and their structures were identified as 5,8-dihydroxy-2-(2-p-methoxyphenylethyl) chromone (2) and 6,7-dimethoxy-2-(2-p-methoxyphenylethyl) chromone (3). The known compound siolated for the first time from this plant, was identified as 5,8-dihydroxy-2-(2-phenylethyl)-chromone (1).
authors.affiliation: Institute of Materia Medica, Chinese Acade my of Medical Sciences, Beijing.
authors.forename: J S
authors.initials: JS
authors.lastname: Yang
authors.forename: Y L
authors.initials: YL
authors.lastname: Wang
authors.forename: Y L
authors.initials: YL
authors.lastname: Su
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002867:Chromones / Q000302:isolation & purification*; D004365:Drugs, Chinese Herbal / Q000032:analysis*
chemical_list: D002867:Chromones; D004365:Drugs, Chinese Herbal; C066416:6,7-dimethoxy-2-(2-(4-methoxyphenyl)ethyl)chromone; C066414:5,8-dihydroxy-2-(2-(4-methoxyphenyl)ethyl)chromone; C066415:5,8-dihydroxy-2-(2-phenylethyl)chromone