Electrospray Ionization Mass Spectrometry Screening of Piperidine Alkaloids from Senna spectabilis (Fabaceae) Extracts: Fast Identification of New Constituents and Co-metabolites

نویسندگان

  • Marcos Pivatto
  • Antônio E. M. Crotti
  • Norberto P. Lopes
  • Ian Castro-Gamboa
  • Amanda de Rezende
  • Cláudio Viegas
  • Maria Claudia M. Young
  • Maysa Furlan
  • Vanderlan S. Bolzani
چکیده

O padrão de fragmentação de uma série homóloga de alcalóides piperidínicos isolados de Senna spectabilis foi investigado utilizando-se espectrometria de massas tandem com ionização por electrospray (ESI-EM/EM). A análise dos extratos EtOH e frações das flores e dos frutos de S. spectabilis por ESI-EM e ESI-EM/EM permitiu elucidar a estrutura de quatro componentes pertencentes a uma série homóloga destes alcalóides, bem como de quatro co-metabólitos inéditos. A elucidação estrutural dos co-metabólitos, com base no padrão de fragmentação de alcalóides piperidínicos previamente isolados, e confirmados pelos dados de EM de alta resolução, demonstra a importância desta técnica para a determinação do “perfil metabolômico” de uma espécie de importância farmacológica.

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تاریخ انتشار 2005