Stereocontrolled Access to Enantiopure 7-Substituted <i>cis</i>- and <i>trans</i>-Octahydroindoles
作者:Elena Ghirardi、Rosa Griera、Miriam Piccichè、Elies Molins、Israel Fernández、Joan Bosch、Mercedes Amat
DOI:10.1021/acs.orglett.6b02861
日期:2016.11.18
afforded tricyclic oxazoloindolone lactams, from which straightforward procedures for the stereocontrolled formation of enantiopure 7-substituted octahydroindoles with a variety of stereochemical patterns have been developed. The methodology has been successfully applied to the synthesis of (+)-α-lycorane.
(R)-苯基甘氨醇与3-取代的2-氧代环己烷乙酸酯的立体异构混合物(外消旋物,顺式/反式)立体缩合,可选择性地得到三环恶唑啉酮内酰胺,从中可通过直接控制的方法以立体方式形成对映体纯的7-取代的八氢吲哚并具有多种立体化学模式已经开发了。该方法已经成功地应用于合成(+)-α-番石榴烷。