CHEMOSELECTIVE AMINOMETHYLATION OF HARMOL
DOI:
https://doi.org/10.1007/4793Keywords:
β-carboline, harmol, Mannich bases, 1H-pyrido[4', 3', 4, 5]pyrrolo[3, 2, 1-ij]quinazoline, aminomethylationAbstract
Aminomethylation of harmol (7-hydroxy-1-methyl-β-carboline) was investigated. It was shown that the reaction proceeds chemoselectively to form 8-aminomethyl derivatives by the action of aminals or a mixture of a secondary amine with paraform. When primary amines and an excess of paraform were used in the Mannich reaction, 2,3-dihydro-1H-pyrido[4',3':4,5]pyrrolo[3,2,1-ij]quinazolin-4-ol and 1,2,3,11-tetrahydro[1,3]oxazino[6,5-g]pyrido[3,4-b]indole derivatives are formed.
Authors: Svitlana P. Bondarenko, Vera N. Ishchenko, Mykhaylo S. Frasinyuk