6-Cyclylmethyl- and 6-alkylmethyl-substituted pyrazolopyrimidines

摘要

Disclosed is a compound of formula (I), or a salt, solvate, or solvate of a salt thereof, wherein the substituents are as defined in the specification. Also disclosed is a process for preparing the compound, and the use of the compound for treating impairments of perception, concentration, learning or memory, such as that which is a consequence of Alzheimer's disease.