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
已经开发了一种新的合成方法,用于合成菊科植物生物碱二赖氨酸II。在这种方法中,我们设计了用于喹喹嗪环形成的顺序环化途径。为了制备所需的前体,已知的手性β-氨基酯已被用作起始中间体。当在氮上Cbz基团,脱保护内切型迈克尔加成和按S Ñ( - ) - 2- 2反应被假定为进行以提供外延lasubine II。