Stereocontrolled synthesis of piperidine alkaloids, (−)-241D and (−)-isosolenopsin
作者:R.V.N.S. Murali、S. Chandrasekhar
DOI:10.1016/j.tetlet.2012.04.115
日期:2012.7
Highly diastereocontrolled synthesis of alkaloids, (−)-241D and (−)-isosolenopsin was achieved in 7.7% and 5.3% yields, respectively, using a Barbier-type allylation of a chiral imine and d-proline catalyzed aldol addition reaction of a β-amino aldehyde with acetone as the key steps. The synthesis involves a nine-step sequence using (S)-valinate imine in a Barbier-type allylation for the first time