title: Identification of two meridianins from the crude extract of the tunicate Aplidium meridianum by tandem mass spectrometry.
abstract: As part of the development of an analytical technique for the detection of meridianins and related compounds in biological fluids, a crude extract of the tunicate Aplidium meridianum was analysed using neutral loss tandem mass spectrometry. The 41 u neutral loss-EI(+) mass spectrum showed molecular ions corresponding to two previously undetected alkaloids. We report herein the isolation and structure elucidation of these alkaloids, meridianins F and G.
authors.affiliation: Facultad de Ciencias Exactas y Naturales, Departamento de Quimica Organica and UMYMFOR, Universidad de Buenos Aires, Pabellon II, Ciudad Universitaria, Buenos Aires, Argentina.
authors.forename: A M
authors.initials: AM
authors.lastname: Seldes
authors.forename: M F Rodriguez
authors.initials: MF
authors.lastname: Brasco
authors.forename: L Hernandez
authors.initials: LH
authors.lastname: Franco
authors.forename: J A
authors.initials: JA
authors.lastname: Palermo
mesh_terms: D000470:Alkaloids / Q000032:analysis* / Q000737:chemistry*; D000818:Animals; D026121:Indole Alkaloids / Q000032:analysis* / Q000737:chemistry*; D015394:Molecular Structure; D053719:Tandem Mass Spectrometry; D014561:Urochordata / Q000737:chemistry*
chemical_list: D000470:Alkaloids; D026121:Indole Alkaloids; C522700:meridianin F; C522699:meridianin G