title: Neolignan and megastigmane glycosides from the leaves of Pterospermum semisagittatum.
abstract: Three compounds namely, (7S,8R)-dihydrodehydrodiconiferyl alcohol-9'-O-beta-D-glucopyranoside (1), 10-hydroxy-4,7-megastigmadien-3-one-9-O-beta-D-glucopyranoside (2) and 9-hydroxy-4,7-megastigmadien-3-one-10-O-beta-D-glucopyranoside (3) were isolated from the methanol extract of Pterospermum semisagittatum. The structures of these compounds were elucidated by spectroscopic methods. While glycosides 2 and 3 appear to be new, this is the third report of isolation of compound 1 from any natural source.
authors.affiliation: Department of Chemistry, University of Dhaka, Bangladesh.
authors.forename: M S H
authors.initials: MS
authors.lastname: Khan
authors.forename: N
authors.initials: N
authors.lastname: Nahar
authors.forename: M
authors.initials: M
authors.lastname: Mosihuzzaman
authors.forename: M A
authors.initials: MA
authors.lastname: Rashid
mesh_terms: D003512:Cyclohexanones / Q000737:chemistry* / Q000302:isolation & purification; D005960:Glucosides / Q000737:chemistry* / Q000302:isolation & purification; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification; D017705:Lignans / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D019660:Malvaceae / Q000737:chemistry*; D013058:Mass Spectrometry; D000432:Methanol; D045792:Norisoprenoids / Q000737:chemistry* / Q000302:isolation & purification; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D012997:Solvents; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D003512:Cyclohexanones; D005960:Glucosides; D006027:Glycosides; D017705:Lignans; D045792:Norisoprenoids; D010936:Plant Extracts; D012997:Solvents; C413264:megastigmane; D000432:Methanol