title: Analysis and purification of phorbol esters using normal phase HPLC and photodiode-array detection.
abstract: For the first time a normal-phase HPLC method using photodiode-array detection is described for the analysis and purification of phorbol esters. The use of the method is demonstrated with examples of 10 different tigliane and daphnane esters (TPA, DOPP, DOPPA, Sap A, Sap B, Sap C, Sap D, Thy A, Ro and Rx). Both analytical and semipreparative techniques were developed. The method has been used in the final purification of DOPP and Rx from plant extracts. The method can be employed in the areas of phytochemistry, biochemistry and pharmacology/toxicology, where small samples of the toxic materials are required for research.
authors.affiliation: Department of Pharmacognosy, School of Pharmacy, University of London, UK.
authors.forename: S M
authors.initials: SM
authors.lastname: Dimitrijević
authors.forename: U
authors.initials: U
authors.lastname: Humer
authors.forename: M
authors.initials: M
authors.lastname: Shehadeh
authors.forename: W J
authors.initials: WJ
authors.lastname: Ryves
authors.forename: N M
authors.initials: NM
authors.lastname: Hassan
authors.forename: F J
authors.initials: FJ
authors.lastname: Evans
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D002855:Chromatography, Thin Layer / Q000379:methods; D010703:Phorbol Esters / Q000032:analysis / Q000302:isolation & purification*
chemical_list: D010703:Phorbol Esters