Chinoin Gyogyszer Es Vegyeszeti Termekek Gyara Rt.

Janos Bergmann

Eva Somfai

Jozsef Knoll

Antal Simay

Zoltan Torok

Karoly Mozsolits

Eva Szinnyei

The present invention relates to a pharmaceutical composition comprising as active ingredient a compound of the Formula I ##STR1## wherein R.sup.1 stands for straight or branched chain alkyl comprising 1 to 8 carbon atoms; phenyl alkyl having 7 to 10 carbon atoms; phenyl; or cycloalkyl comprising 3 to 8 carbon atoms;

Psychostimulant agent

A method of treating a learning deficiency is disclosed wherein a patient in need of stimulating learning ability is treated with a therapeutically effective amount of a compound of the Formula (I) ##STR1## wherein R.sup.1 is C.sub.1 to C.sub.8 straight or branched chain alkyl, C.sub.7 to C.sub.10 phenylalkyl, phenyl, or C.sub.3 to C.sub.8 cycloalkyl; and

Method of treatment of learning deficiency

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Visegrad, Hungary

Janos Bergmann