Pyrazolopyrimidines for treatment of CNS disorders
 This invention relates to the use of pyrazolopyrimidines and pyrrolopyrimidine of, respectively, the general formula ##STR1## wherein A, X, R.sup.3, R.sup.4 and R.sup.5 are as defined below, and the pharmaceutically acceptable salts of such compounds, to treat, prevent or inhibit certain neuronal and other disorders. 
Pfizer Inc.
A
A61K
inventional
Yuhpyng L.
Chen