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Five-step synthetic routes of two new polyfused heterocycles: indazolo[3,2-
a]-beta-carboline (3) and benzo[4',5'][1,2,3]triazino[6,1-a]-beta-carbolini
um salt (10) applying Pd(0)-catalyzed cross-coupling reaction have been ela
borated. (C) 2000 Elsevier Science Ltd. All rights reserved.