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A straightforward approach to novel fused β-carbolines namely (1,3,5)triazino (1',2':1,6)pyrido(3,4-b)indol-4-ones is presented. The construction of these compounds was achieved by one-pot synthesis involving condensation of 3-amino-β-carbolines with ethoxycarbonyl isothiocyanate followed by amination of the resulting thioureas and finally thermal ring closure of the resulting guanidines which allowed access to the unreported title heterocycles.

arkivoc

Triazine-fused β-carbolines: a facile three-step, one-pot synthesis of novel 2-alkyl(aryl)amino and 2-dialkylamino-7H-[1,3,5]triazino [1',2':1,6]pyrido[3,4-b]indol-4-ones