A highly efficient one-pot procedure for the synthesis of phenanthridine-1,7,10-triones from acylbenzoquinones and cyclic enaminones is reported. The cycloaddition reactions of these quinones with 1-trimethylsilyloxybutadiene followed by hydrolysis and oxidative processes provide entry to a variety of angucyclinone 5-aza analogues.
Studies on quinones. Part 44: Novel angucyclinone N-heterocyclic analogues endowed with antitumoral activity☆
作者:Jaime A. Valderrama、Pamela Colonelli、David Vásquez、M. Florencia González、Jaime A. Rodríguez、Cristina Theoduloz
DOI:10.1016/j.bmc.2008.10.064
日期:2008.12.15
search for newpotentially anticancer drugs, series of angucyclinone aza-analogues containing pyridine and pyridopyridazine rings have been designed and synthesized by a highly efficient sequence involving a one-pot step for the synthesis of tricyclic quinone intermediate and highly regiocontrolled cycloaddition reactions with polarized 1,3-dienes. The new N-heterocyclic angular quinones were evaluated