Stereoselective Synthesis of 2,6-<i>trans</i>-Tetrahydropyran via Primary Diamine-Catalyzed Oxa-Conjugate Addition Reaction of α,β-Unsaturated Ketone: Total Synthesis of Psymberin
作者:Seong Rim Byeon、Heekwang Park、Hyoungsu Kim、Jiyong Hong
DOI:10.1021/ol2024289
日期:2011.11.4
The total synthesis of psymberin was achieved employing a readily available chiral epoxide to prepare two of the three subunits in the natural product. The key reaction was a highly stereoselective organocatalytic oxa-conjugate addition reaction of α,β-unsaturated ketone catalyzed by primary diamine for the synthesis of the 2,6-trans-tetrahydropyran embedded in psymberin.
使用容易获得的手性环氧化物制备天然产物中的三个亚基中的两个,从而实现了psymberin的总合成。关键反应是伯二胺催化的α,β-不饱和酮的高度立体选择性有机催化氧杂共轭加成反应,合成了埋藏在Psymberin中的2,6-反式-四氢吡喃。