Bioactive alkaloid extracts from Narcissus broussonetii: Mass spectral studies

DE ANDRADE, JEAN PAULO; PIGNI, NATALIA BELÉN; TORRAS-CLAVERIA, LAURA; BERKOV, STRAHIL; CODINA, CARLES; VILADOMAT, FRANCESC; BASTIDA, JAUME

JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2012 vol. 70 p. 13 - 13

0731-7085

lants of the Amaryllidaceae family are a well-known source of tetrahydroisoquinoline alkaloids with a wide range of biological activities, including antiviral, antitumoral, antiparasitic, psychopharmacological, and acetylcholinesterase inhibitory, among others. Recent advances in the use of GC or LC coupled to MS have allowed a chemically guided isolation of uncommon and bioactive alkaloids. In the present work, analytical methods were applied to study the alkaloid profile of Narcissus broussonetii, a plant endemic to North Africa. Using the GC-MS technique and an in-home mass fragmentation database, twenty-three alkaloids were identified, including the very rare dinitrogenous alkaloids obliquine, plicamine, and secoplicamine. Applying LC-ESI-LTQ-Orbitrap-MS, fragmentation profiles were found to be similar for obliquine and plicamine but different for secoplicamine. Pretazettine, a potent cytotoxic alkaloid, was also isolated from N. broussonetii, although its identification by GC-MS