title: Constituents of Pterocarpus marsupium: an ayurvedic crude drug.
abstract: Five new flavonoid C-glucosides, 6-hydroxy-2-(4-hydroxybenzyl)-benzofuran-7-C-beta-d-glucopyranoside (1), 3-(alpha-methoxy-4-hydroxybenzylidene)-6-hydroxybenzo-2(3H)-furanone-7-C-beta-d-glucopyranoside (2), 2-hydroxy-2-p-hydroxybenzyl-3(2H)-6-hydroxybenzofuranone-7-C-beta-d-glucopyranoside (4), 8-(C-beta-d-glucopyranosyl)-7,3',4'-trihydroxyflavone (5) and 1,2-bis(2,4-dihydroxy,3-C-glucopyranosyl)-ethanedione (6) and two known compounds C-beta-d-glucopyranosyl-2,6-dihydroxyl benzene (7) and sesquiterpene (8), were isolated from an aqueous extract of the heartwood of Pterocarpus marsupium. The structure has been established using spectroscopic data.
authors.affiliation: Medicinal Chemistry Division, Central Drug Research Institute, Lucknow-226 001, India. mauryarakesh@rediffmail.com
authors.forename: Rakesh
authors.initials: R
authors.lastname: Maurya
authors.forename: Rajinder
authors.initials: R
authors.lastname: Singh
authors.forename: Mundkinajeddu
authors.initials: M
authors.lastname: Deepak
authors.forename: S S
authors.initials: SS
authors.lastname: Handa
authors.forename: Prem P
authors.initials: PP
authors.lastname: Yadav
authors.forename: Pushpesh K
authors.initials: PK
authors.lastname: Mishra
mesh_terms: D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification; D008515:Medicine, Ayurvedic; D008968:Molecular Conformation; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D035721:Pterocarpus / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D005419:Flavonoids; D005960:Glucosides; D010936:Plant Extracts; D012717:Sesquiterpenes