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。