Synthetic study of (−)-lasubine II via sequential cyclization process
作者:Jaebum Lim、Guncheol Kim
DOI:10.1016/j.tetlet.2007.11.001
日期:2008.1
A new synthetic pathway to lythraceae alkaloid lasubine II has been developed. In this approach, we designed a sequential cyclization pathway for the formation of quinolizidine ring. For the preparation of the requisite precursor, a known chiral β-amino ester has been used as a starting intermediate. Upon deprotection of Cbz group on nitrogen, endo-type Michael addition and the following SN2 reaction