title: A new chromone derivative from Berchemia lineata.
abstract: To study the chemical constituents from the root of Berchemia lineata (L.) DC., nine compounds were isolated from the EtOAc extract by using silica gel, RP-C18 silica gel column chromatography and preparative HPLC. Based on the spectroscopic analysis, their structures were identified as 5-hydroxy-7-(2'-hydroxypropyl)-2-methyl-chromone (1), (-)-(1'R, 2'S)-erythro-5-hydroxy-7-(1', 2'-dihydroxypropyl)-2-methyl-chromone (2), naringenin (3), eriodictyol (4), (+)-aromadendrin (5), (+)-taxifolin (6), (+)-catechin (7), (+)-epigallocatechin (8) and quercetin (9). Among them, compound 2 is a new chromone derivative. Compound 1 is a known chromone derivative and isolated from this genus for the first time. Compounds 3-9 are known flavonoids and isolated from this plant for the first time.
authors.affiliation: College of Pharmacy, South-Central University for Nationalities, Wuhan 430074, China.
authors.forename: Yu-xia
authors.initials: YX
authors.lastname: Shen
authors.forename: Hong-li
authors.initials: HL
authors.lastname: Teng
authors.forename: Guang-zhong
authors.initials: GZ
authors.lastname: Yang
authors.forename: Zhi-nan
authors.initials: ZN
authors.lastname: Mei
authors.forename: Xiao-long
authors.initials: XL
authors.lastname: Chen
mesh_terms: D002392:Catechin / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification; D002867:Chromones / Q000737:chemistry / Q000302:isolation & purification*; D044950:Flavanones / Q000737:chemistry / Q000302:isolation & purification; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification; D027823:Rhamnaceae / Q000737:chemistry*
chemical_list: C574235:(-)-(1'R,2'S)-erythro-5-hydroxy-7-(1',2'-dihydroxypropyl)-2-methylchromone; D002867:Chromones; D044950:Flavanones; D005419:Flavonoids; C080220:aromadedrin; D002392:Catechin; D011794:Quercetin; C003377:taxifolin; C057580:gallocatechol; C005273:naringenin; C007619:eriodictyol