Use of 6-(benzyl-amino)-2(S)-[[1-(hydroxymethyl)propyl]amino]-9-isopropylpurine (I) or its salts for the manufacture of a drug to prevent and/or treat neurological diseases, particularly associated with neurological lesions. ACTIVITY : Neuroprotective; Cerebroprotective; Antiparkinsonian; Nootropic; Anticonvulsant; Cardiant; Vasotropic; Hemostatic. MECHANISM OF ACTION : Cycline-dependent protein kinase inhibitor; Desmoteplase activator; Tissue plasminogen activator.