title: Metabolite fingerprinting of Camptotheca acuminata and the HPLC-ESI-MS/MS analysis of camptothecin and related alkaloids.
abstract: The major phytochemical constituents, namely, alkaloids, flavonoids and ellagic acid derivatives, of leaves of Camptotheca acuminata were identified using high performance liquid chromatography (HPLC) coupled with electrospray mass spectrometry (ESI-MS) in extracts of plants cultivated in Italy and collected at different growth stages. Alkaloids related to camptothecin were identified and quantified by HPLC coupled with ESI-tandem mass spectrometry (MS/MS) employing, respectively, an ion trap and a triple quadrupole mass analyser. The fragmentation patterns of alkaloids related to camptothecin were analysed and a specific Multiple Reaction Monitoring HPLC-MS/MS method was developed for the quantitative determination of these constituents. The described method provides high sensitivity and specificity for the characterisation and quantitative determination of the alkaloids in C. acuminata.
authors.affiliation: Dipartimento di Scienze Farmaceutiche, Università degli Studi di Salerno, via Ponte don Melillo, 84084 Fisciano (SA), Italy. pmontoro@unisa.it
authors.forename: Paola
authors.initials: P
authors.lastname: Montoro
authors.forename: Mariateresa
authors.initials: M
authors.lastname: Maldini
authors.forename: Sonia
authors.initials: S
authors.lastname: Piacente
authors.forename: Mario
authors.initials: M
authors.lastname: Macchia
authors.forename: Cosimo
authors.initials: C
authors.lastname: Pizza
mesh_terms: D000470:Alkaloids / Q000032:analysis* / Q000737:chemistry; D002138:Calibration; D029769:Camptotheca / Q000737:chemistry* / Q000254:growth & development; D002166:Camptothecin / Q000032:analysis* / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D015394:Molecular Structure; D008970:Molecular Weight; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D012015:Reference Standards; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D000470:Alkaloids; D010936:Plant Extracts; D002166:Camptothecin