Asymmetric Synthesis of β<sup>2</sup>-Tryptophan Analogues via Friedel–Crafts Alkylation of Indoles with a Chiral Nitroacrylate
作者:Nikola Pavlov、Pierre Gilles、Claude Didierjean、Emmanuel Wenger、Emilia Naydenova、Jean Martinez、Monique Calmès
DOI:10.1021/jo200733t
日期:2011.8.5
The asymmetric Friedel–Crafts alkylation of various indoles with a chiral nitroacrylate provides optically active β-tryptophan analogues after reduction of the nitro group and removal of the chiral auxiliary. This reaction generally occurs in good yield and high diastereoselectivity (up to 90:10).
在硝基还原并除去手性助剂后,各种吲哚与手性硝基丙烯酸酯的不对称Friedel-Crafts烷基化反应提供了旋光性的β-色氨酸类似物。该反应通常以高收率和高非对映选择性(高达90:10)进行。