Substituted purine derivatives, processes for their preparation, their use, and compositions comprising them

   
   

The present invention relates to compounds of the formulae I and Ia ##STR1## in which X, Y, W, W.sup.a, G and G.sup.a have the meanings given in the patent claims, and their physiologically tolerable salts and their prodrugs, their preparation, their use, in particular as pharmaceutical active compounds, and pharmaceutical preparations comprising them. The compounds of the formula I are vitronectin receptor antagonists and can be employed, for example, as inhibitors of bone resorption and for the treatment of osteoporosis.

La actual invención relaciona con los compuestos de los fórmulas el ## del ## STR1 de I y de Ia en el cual X, Y, W, W.sup.a, G y G.sup.a tienen los significados dados en las demandas de la patente, y sus sales fisiológico tolerables y sus prodrugs, su preparación, su uso, en detalle como compuestos activos farmacéuticos, y preparaciones farmacéuticas que las abarcan. Los compuestos del fórmula I son antagonistas del receptor del vitronectin y se pueden emplear, por ejemplo, como inhibidores de la resorción del hueso y para el tratamiento del osteoporosis.

 
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