Synthesis of novel 1,2-functionally-substituted 6,7-dimethoxy-4-spirocyclo-pentanetetrahydroisoquinolines
1-[(3,4-Dimethoxyphenyl)cyclopentyl]methylamine has been used in the synthesis of 6,7-dimethoxy-4-spirocyclopentane-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid N-methylamide which is employed in the preparation of novel derivatives with substituents in positions 1,2,6, and 7.