Structure of the Calystegines: New alkaloids of the nortropane family

Three new alkaloids have been isolated from Calystegia sepium; their structures have been established from their 1H and 13C N.M.R. spectra, and confirmed by the synthesis of model compounds. Elucidation of the structure of Calystegins B 1 1 , B 2 2 and A 3 3 is reported, on the basis of 1H and 13C s...

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Bibliographic Details
Published in:Tetrahedron letters 1990, Vol.31 (27), p.3879-3882
Main Authors: Ducrot, P.-H., Lallemand, J.Y.
Format: Article
Language:English
Subjects:
alkaloids
Calystegia sepium
chemical structure
Chemistry
Exact sciences and technology
Heterocyclic compounds
Heterocyclic compounds with only one n hetero atom and condensed derivatives
isolation
Life Sciences
mass spectrometry
nuclear magnetic resonance spectroscopy
Organic chemistry
Preparations and properties
roots
spectral analysis
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Summary:Three new alkaloids have been isolated from Calystegia sepium; their structures have been established from their 1H and 13C N.M.R. spectra, and confirmed by the synthesis of model compounds. Elucidation of the structure of Calystegins B 1 1 , B 2 2 and A 3 3 is reported, on the basis of 1H and 13C spectra. The synthesis of model compounds is described.
ISSN:0040-4039
1873-3581
DOI:10.1016/S0040-4039(00)97494-X