7-Bromo-beta-carboline compound and method for producing same.

摘要

A 7-bromo- beta -carboline compound of the formula (I): <CHEM> wherein R<1> - H or C1 - C5 alkyl and R<2> = C1 - C5 alkyl or benzyl, is produced by reacting a beta -carboline compound of the formula (II): <CHEM> wherein R<1> and R<2> are as defined above and R<3> = H, C1 - C5 alkyl, C1 - C5 alkoxy or benzyloxy, with a brominating agent in an organic solvent in the presence of an alkalic and then hydrolyzing the resultant procursory 7-bromo- beta -carboline compound of the formula (III): <CHEM> in a solvent in the presence of a mineral acid. I