New Class of Nucleophiles for Palladium-Catalyzed Asymmetric Allylic Alkylation. Total Synthesis of Agelastatin A
作者:Barry M. Trost、Guangbin Dong
DOI:10.1021/ja061105q
日期:2006.5.1
New classes of nucleophiles, pyrroles, and N-methoxyamides were developed for Pd-catalyzed AAA reactions. By varying the functional groups at the 2-position of pyrroles, either regioisomer of the piperazinone is available. Using one regioisomer, the total synthesis of (+)-agelastatin A in 10 total steps is accomplished. For this synthesis, a new copper-catalyzed aziridination and an indium-catalyzed
为 Pd 催化的 AAA 反应开发了新类别的亲核试剂、吡咯和 N-甲氧基酰胺。通过改变吡咯 2 位的官能团,可以得到哌嗪酮的任一区域异构体。使用一种区域异构体,在 10 个总步骤中完成 (+)-agelastatin A 的全合成。对于该合成,开发了新的铜催化氮丙啶化和铟催化氧化开环 N-甲苯磺酰氮丙啶。表明了从另一个区域异构哌嗪酮的手性催化剂的相同对映异构体获得 (-)-agelastatin A 的可行性。