Synthesis of isoquinuclidinones via a tandem amination/imination sequence: application to the synthesis of (−)-mearsine
作者:James D. Cuthbertson、Andrew A. Godfrey、Richard J.K. Taylor
DOI:10.1016/j.tetlet.2010.08.052
日期:2011.4
The facile synthesis of a range of novel isoquinuclidinones from 6-acyl-cyclohex-2-enones is described, employing aqueous ammonia in a one-pot procedure involving initial conjugate addition of ammonia followed by cyclisation via intramolecular imine formation. The scope and limitations of the methodology are described as is an efficient synthesis of the Elaeocarpus alkaloid (−)-mearsine.
Mearsine, a unique isoquinuclidine alkaloid: x-ray crystal structure of mearsine picrate
作者:Glen B. Robertson、Uncharee Tooptakong、John A. Lamberton、Y.A. Geewananda、P. Gunawardana、I. Ralph、C. Bick
DOI:10.1016/s0040-4039(01)81265-x
日期:1984.1
X-ray crystallography shows that mearsine, a minor alkaloid of the north Queensland plant , has the novel isoquinuclidine structure 1, which permits charge transfer to take place between carbonyl and an azomethine group.