Condensed Heteroaromatic Ring Systems. XXIII. A Concise Synthesis of Hippadine
摘要:
Hippadine, a pyrrolophenanthridine alkaloid, was synthesized in 39% overall yield of three steps using the palladium-catalyzed cross-coupling reaction of 2,6-dibromoaniline with (Z)-1-tributylstannyl-2-ethoxyethene as a key step.
A New Approach to Pyrrolophenanthridone Alkaloids via Intramolecular Radical Cyclization
作者:Otohiko Tsuge、Taizo Hatta、Hiroshi Tsuchiyama
DOI:10.1246/cl.1998.155
日期:1998.2
A newapproach to the synthesis of pyrrolophenanthridone class of alkaloids is described. The method is based on intramolecular radicalcyclization of easily accessible 1-aroyl-7-bromoindoles with Bu3SnH and AIBN.