title: Stereochenols A and B, two quinones from Stereospermum chelonoides.
abstract: Two quinones, stereochenols A (1) and B (2) were isolated from a methanol extract of the stem bark of Stereospermum chelonoides, in addition to the known naphthoquinones, sterekunthal B (3) and sterequinone C (4). The structures of these compounds were established by extensive spectroscopic analyses and by comparison of their spectral data with those of related compounds.
authors.affiliation: Phytochemical Research Laboratory, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh.
authors.forename: Mohammad R
authors.initials: MR
authors.lastname: Haque
authors.forename: Khondaker M
authors.initials: KM
authors.lastname: Rahman
authors.forename: Magdy N
authors.initials: MN
authors.lastname: Iskander
authors.forename: Choudhury M
authors.initials: CM
authors.lastname: Hasan
authors.forename: Mohammad A
authors.initials: MA
authors.lastname: Rashid
mesh_terms: D029402:Bignoniaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D024301:Plant Bark / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D011809:Quinones / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D010936:Plant Extracts; D011809:Quinones; C519045:stereochenol A; C519046:stereochenol B