Substituted purine derivatives as inhibitors of cell adhesion

   
   

The present invention relates to compounds of formula (I), in which B, D, E, G, X, Y, Z, R.sup.1, R.sup.2 and s have the meanings indicated in the claims, their physiologically tolerable salts and their prodrugs. The compounds of formula (I) are valuable pharmacologically active compounds. They are vitronectin receptor antagonist and inhibitors of cell adhesion and are suitable for the therapy and prophylaxis of illnesses which are based on the interaction between vitronectin receptors and their ligands in cell-cell or cell-matrix interaction processes or which can be prevented, alleviated or cured by influencing such interactions. For example, they can be applied for inhibiting bone resorption by osteoclasts and thus for treating and preventing osteoporosis, or for inhibiting undesired angiogenesis or prolifertion of cells of the vascular smooth musculature. The invention furthermore relates to processes for the preparation of compounds of formula (I), their use, in particular as active ingredients in pharmaceuticals, and pharmaceutical compositions comprising them. ##STR1##

A invenção atual relaciona-se aos compostos da fórmula (i), em que B, D, E, G, X, Y, Z, R.sup.1, R.sup.2 e s têm os meanings indicados nas reivindicações, em seus sais physiologically tolerable e em seus prodrugs. Os compostos da fórmula (I) são compostos pharmacologically ativos valiosos. São antagonista do receptor do vitronectin e inibidores da adesão da pilha e são apropriados para a terapia e a profilaxia das doenças que são baseadas na interação entre os receptors do vitronectin e os seus ligands em processos da interação da pilha-pilha ou da pilha-matriz ou que podem ser impedidas, aliviado ou curado influenciando tais interações. Para o exemplo, podem ser aplicados para o resorption inibindo do osso por osteoclasts e assim tratando e impedindo o osteoporosis, ou para o angiogenesis ou o prolifertion indesejado inibindo das pilhas do musculature liso vascular. A invenção além disso relaciona-se aos processos para a preparação dos compostos da fórmula (i), seu uso, no detalhe como ingredientes ativos nos pharmaceuticals, e nas composições pharmaceutical que compreendem os. ## do ## STR1

 
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