title: 3,5-Dimethoxy-3-(1,1-dimethylprop-2-enyl)-3,4-dihydropsoralen-4-one: an unusual furanocoumarin derivative from Halfordia kendack.
abstract: The aerial parts of Halfordia kendack (Rutaceae) have yielded a new furanocoumarin derivative which has been identified as 3,5-dimethoxy-3-(1,1-dimethylprop-2-enyl)-3,4-dihydropsoralen-4-one on the basis of spectroscopic and X-ray examination. This new compound, present in high concentration, is probably formed from a 4-O-prenylated precursor furanocoumarin via a Claisen rearrangement. No trace of the putative precursor was found in this sample.
authors.affiliation: Department of Pharmaceutical Sciences, University of Strathclyde, Glasgow, Scotland, UK.
authors.forename: N
authors.initials: N
authors.lastname: Sultana
authors.forename: B W
authors.initials: BW
authors.lastname: Skelton
authors.forename: P G
authors.initials: PG
authors.lastname: Waterman
authors.forename: A H
authors.initials: AH
authors.lastname: White
mesh_terms: D018360:Crystallography, X-Ray; D011564:Furocoumarins / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D019684:Magnoliopsida / Q000737:chemistry*; D008968:Molecular Conformation
chemical_list: C420462:3,5-dimethoxy-3-(1,1-dimethylprop-2-enyl)-3,4-dihydropsoralen-4-one; D011564:Furocoumarins