5-OR 6-SUBSTITUTED BETA-CARBOLINE-3-CARBOXYLIC-ACID ESTERS

摘要

5- or 6-substituted beta -carboline-3-carboxylic acid esters of the formula I in which R<1> denotes hydrogen, nitrilo, halogen, lower alkyl or lower alkoxy and R<3> is a branched C3-6-alkyl group which is optionally substituted by halogen or a C3-6-cycloalkyl group which is optionally methyl- substituted, are useful pharmaceuticals.r