abstract |
FIELD: organic chemistry, pharmacy. SUBSTANCE: invention relates to physical form of (R)-7-acetyl-5-(4-aminophenyl)-8,9-dihydro- -8-methyl-7H-1,3-dioxolo[4,5-h]-[2,3]-benzodiazepine exhibiting powder roentgenogram eliciting d parameters at 10.61; 8.83; 6.78; 5.83; 4.13 and 3.78 and showing strong and selective antagonist effect on AMPA--receptors. EFFECT: improved method of synthesis, valuable pharmacological properties. 4 cl, 1 tbl, 24 ex |