Facile Synthesis of a Benzindenoazepine Alkaloid, Bulgaramine, via Samarium Diiodide Promoted Ring Expansion of an α-Aminocarbonyl Compound
作者:Toshio Honda、Eriko Aranishi、Kyosuke Kaneda
DOI:10.1021/ol9004239
日期:2009.4.16
A novel synthetic path to a benzindenoazepine alkaloid was established by employing a samarium diiodide promoted ring expansion reaction of an α-aminocarbonyl compound as a key reaction, in which a regioselective carbon−nitrogen bond cleavage followed by ring-closing reactions occurred to give the basic ring skeleton of the target compound. Bulgaramine was synthesized from the known tetrahydroisoquinoline