A short synthesis of apoyohimbines via a sulfolene based intramolecular Diels-Alder reaction
作者:John Leonard、Diana Appleton、Stephen P. Fearnley
DOI:10.1016/s0040-4039(00)79968-0
日期:1994.2
Allo-apoyohimbine and apoyohimbine have been synthesized in a short sequence of high yielding, stereoselective steps. The key step is an intramolecular Diels-Alder reaction, which under kinetically controlled conditions provides the required hexahydroisoquinoline D/E-ring intermediate, but under thermodynamic control gives a hydroisoindole system, via a conjugated diene.
已经以高产率的立体选择性步骤的短序列合成了异源-阿朴育亨宾和阿朴育亨宾。关键步骤是分子内Diels-Alder反应,该反应在动力学控制的条件下可提供所需的六氢异喹啉D / E环中间体,但在热力学控制下可通过共轭二烯生成氢异吲哚体系。