Synthesis of (+)-6,7-Dimethoxy-1,2,3,4-tetrahydroisoquinoline-1-carboxylic Acid, a Diastereoselective Approach
作者:Ilona Bułyszko、Maria Chrzanowska、Agnieszka Grajewska、Maria D. Rozwadowska
DOI:10.1002/ejoc.201403218
日期:2015.1
The diastereoselective synthesis of (+)-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid (90 % ee) was accomplished by employing a combination of two synthetic methods, that is, the Petasis synthesis of amino acids and the Pomeranz–Fritsch–Bobbitt synthesis of tetrahydroisoquinoline derivatives. The stereochemical outcome of the synthesis was controlled by chiral aminoacetaldehyde acetals
(+)-6,7-二甲氧基-1,2,3,4-四氢异喹啉-1-羧酸(90%ee)的非对映选择性合成是通过两种合成方法的组合完成的,即Petasis合成氨基酸和四氢异喹啉衍生物的 Pomeranz-Fritsch-Bobbitt 合成。合成的立体化学结果由手性氨基乙醛缩醛控制,手性氨基乙醛缩醛用作 Petasis 步骤的胺组分,以在一个简单的操作中产生用于四氢异喹啉环形成的 Pomeranz-Fritsch-Bobbitt 底物。