title: Xanthones from calli of Hypericum perforatum subsp. perforatum.
abstract: Two new xanthone derivatives, 1-hydroxy-5,6,7-trimethoxyxanthone and 3-O-methylpaxanthone were isolated from callus of Hypericum perforatum subsp. perforatum together with the known paxanthone, cadensin G, 1-hydroxy-6,7-dimethoxyxanthone, 1,3,6,7-tetrahydroxyxanthone, and 1,3,5,6-tetrahydroxyxanthone. The structures of the new compounds were established by spectroscopic methods.
authors.affiliation: Istituto di Biochimica e Biochimica Clinica, Università Cattolica S Cuore e Centro per la Chimica del Riconoscimento Molecolare, CNR, Roma, Italy. franco.ferrari@icrm.cnr.it
authors.forename: Franco
authors.initials: F
authors.lastname: Ferrari
authors.forename: Gabriella
authors.initials: G
authors.lastname: Pasqua
authors.forename: Barbara
authors.initials: B
authors.lastname: Monacelli
authors.forename: Paola
authors.initials: P
authors.lastname: Cimino
authors.forename: Bruno
authors.initials: B
authors.lastname: Botta
mesh_terms: D020902:Hypericum / Q000737:chemistry* / Q000254:growth & development; D009682:Magnetic Resonance Spectroscopy; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C497375:1-hydroxy-5,6,7-trimethoxyxanthone and 3-O-methylpaxanthone; D044004:Xanthones