Henry–Nef reaction: a practical and versatile chiral pool route to 2-substituted pyrrolidine and piperidine alkaloids
作者:Chinmay Bhat、Santosh G. Tilve
DOI:10.1016/j.tet.2013.05.055
日期:2013.7
for the synthesis of 2-substituted pyrrolidine and piperidine alkaloids containing 1,3-aminoketone and 1,3-amino alcohol units. The utility of the protocol is demonstrated by asymmetric synthesis of 12 natural products of which asymmetric synthesis of (−)-N-methylpelletierine is presented for the first time. The one-carbon homologation described also provides an alternate route for the synthesis of key
本文描述了由亨利和Nef组合反应开发的协同方案,用于合成含有1,3-氨基酮和1,3-氨基醇单元的2-取代的吡咯烷和哌啶生物碱。该协议的实用性通过12种天然产物的不对称合成得到了证明,其中首次出现了(-)- N-甲基胆碱的不对称合成。所描述的一碳同系物还提供了另一种合成关键中间体高脯氨醇和高胡椒醇的中间体的途径,这些中间体用作几种生物碱的合成前体,并由α-氨基酸构建β-氨基酸。