FIELD: organic chemistry, pharmacy. SUBSTANCE: invention relates to substituted 1,2,3,4-tetrahydroisoquinolines of the formula (I) where R1,R2 - hydrogen atom, nitro-, carboxy-group, lower alkyl, alkoxy-, amino-group; n - a whole number 0-2; R3 is alkoxy-group; R4 is CO2R6; R6 - hydrogen atom or lower alkyl; R5 is COR7; R7 - aralkyl, diaralkyl or NR8R9 where R8,R9 - hydrogen atom, alkyl, aryl; X is O or absent, or their pharmaceutically acceptable salts and a pharmaceutical composition on their base that are effective for treatment of patients with chronic progressive sickness of cognitive capability. EFFECT: enhanced effectiveness of compounds. 16 cl, 48 ex
Authors
Dates
1999-08-27—Published
1993-04-19—Filed