1.
J Org Chem
; 72(23): 8972-5, 2007 Nov 09.
Article
in English
| MEDLINE
| ID: mdl-17924694
ABSTRACT
We report a novel, facile, and asymmetric approach for the synthesis of the anti-tumor alkaloid (+)-crispine A via a highly diastereoselective N-acyliminium cyclization reaction as a key synthetic step.