作者:Václav Jurčík、Kenzo Arai、Matthew M. Salter、Yasuhiro Yamashita、Shū Kobayashi
DOI:10.1002/adsc.200700615
日期:2008.3.25
Niobium-based chiral Lewis acid was found to be highly effective catalyst for aza-Diels–Alder reactions of imines with Danishefsky‘s dienes. The reactions proceed in high yield with high enantioselectivity for both aromatic and aliphatic imines. The developed methodology was applied to total synthesis of (+)-anabasine.
铌基手性路易斯酸被发现是亚胺与Danishefsky二烯的氮杂Diels-Alder反应的高效催化剂。对于芳族和脂族亚胺,反应以高对映选择性和高收率进行。所开发的方法应用于(+)-天麻碱的全合成。