Application of an amidyl radical cascade to the total synthesis of (±)-fortucine leading to the structural revision of kirkine
作者:Aurélien Biechy、Shuji Hachisu、Béatrice Quiclet-Sire、Louis Ricard、Samir Z. Zard
DOI:10.1016/j.tet.2009.04.027
日期:2009.8
radical was developed, allowing the rapid construction of galanthan frameworks. It was applied to a concise, stereo/regio-selective and tin-free totalsynthesis of the natural product (±)-fortucine. This in turn resulted in the correction of the structure of kirkine.
Pyrrolophenanthridinone derivatives including the naturalproducts were readily synthesized by samarium(II)-mediated reductive cyclization of aryl radical onto a benzene ring under mild reaction conditions. This methodology was applied to the concise synthesis of anhydrolycorinone, a natural pyrrolophenanthridinone and a precursor of hippadine and anhydrolycorine.