Direct access to vicinally functionalized and <i>N</i>-trifluoroacetylated (bicyclic)ketopiperazines using a readily affordable N-heterocyclic anhydride
作者:Antonio Moreno、Timothy K. Beng
DOI:10.1039/d0ob00049c
日期:——
stereoselective, modular, and chemoselective annulation protocol between a novel N-trifluoroacetyl anhydride and several reactive partners, including lactim ethers, imidoyl chlorides, aryl aldimines, and 1,3-azadienes, leading to vicinally functionalized (bicyclic) 2-piperazinones.
功能化的2-哌嗪酮通过模拟肽中的反向γ-转角,在构象受限的拟肽中起着至关重要的作用。在这里,我们描述了一种新颖的N-三氟乙酰酐与几种反应性伙伴(包括内酰胺醚,亚氨酰氯,芳基醛亚胺和1,3-氮二烯)之间的有效,可扩展,立体选择性,模块化和化学选择性环合方案,从而实现了病毒功能化(双环)2-哌嗪酮。