Pyrrolizidine alkaloids from Onosma arenaria (Boraginaceae)

• Verfasst von: El-Shazly, Assem [VerfasserIn]
• Verfasst von: Abdel-Ghani, Afaf [VerfasserIn]
• Verfasst von: Wink, Michael [VerfasserIn]
• Titel: Pyrrolizidine alkaloids from Onosma arenaria (Boraginaceae)
• Verf.angabe: Assem El-Shazly, Afaf Abdel-Ghani, Michael Wink
• Jahr: 2003
• Umfang: 9 S.
• Fussnoten: Gesehen am 04.10.2017
• Titel Quelle: Enthalten in: Biochemical systematics and ecology
• Ort Quelle: Amsterdam [u.a.] : Elsevier Science, 1973
• Jahr Quelle: 2003
• Band/Heft Quelle: 31(2003), 5, Seite 477-485
• ISSN Quelle: 1873-2925
• DOI: doi:10.1016/S0305-1978(02)00177-1
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Boraginaceae
• Sach-SW: Gas liquid chromatography (GLC)
• Sach-SW: GLC-mass spectrometry
• Sach-SW: NMR
• Sach-SW: Pyrrolizidine alkaloids
• Sach-SW: Uplandicine
• K10plus-PPN: 1564048950

Abstract

Uplandicine, a 1,2-unsaturated pyrrolizidine alkaloid esterified with acetyl and echimidinyl moieties at C-7 and C-9, respectively, was isolated as a major component from the alkaloid extract of Onosma arenaria. Its structure was confirmed by MS (EI and positive FAB), 1H- and 13C-NMR analysis. Furthermore, nine minor alkaloids were identified on the basis of mass spectral data and/or Kovats retention indices.