. LOCK. Can. J. Chem. 64,943 (1986). Fastigiatine, C19H28N20, is a minor component of the alkaloids of Lycopodium fastigiatum R. Br. collected in New Zealand.Its structure and relative configuration have been resolved by an X-ray analysis of the free base. The pentacyclic ring system of fastigiatine has not been previously observed in the Lycopodium family of alkaloids or elsewhere. A proposal is presented for its derivation from the tetracyclic flabellidane ring system that is widely distributed among Lycopodium species. The mass spectrum and the 13c and 'H nrnr spectra of fastigiatine are discussed.ROBERT V. GERARD, DAVID B. MACLEAN, ROMOLO FAGIANN~, et COLIN J. LOCK. Can. J. Chem. 64, 943 (1986). La fastigiatine, C19H28N20, est un constituant mineur des alcalo'ides du Lycopodium fastigiatine R. Br. rtcoltt en Nouvelle Zlande. On a rtsolu sa structure et sa configuration relative par I'analyse aux rayons-X de la base libre. On n'avait pas encore observt le systtme pentacyclique de la fastigiatine dans la farnille des alcalo~des du Lycopodium ou ailleurs. On propose une mtthode de prtpariition de la fastigiatine h partir du systkme tttracyclique de la flabellidane que I'on retrouve souvent dans les espkes du Lycopodium. On discute du spectre de masse et des spectres rmn du I3c et du 'H de la fastigiatine.[Traduit par la revue]
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