Comparison of the affinity towards adenosine receptors of 2-phenyl-8-azaadenosines, bearing a lipophilic substituent on N(6), with the corresponding 2-phenyl-8-azaadenines was carried out. The compounds have good A(1) affinity and high A(1) selectivity. The obtained Ki(rib)/Ki(benz) ratios for A(1) receptors, which showed variable values depending on the structure of the N(6) Substituent,confirmed that 2-phenyl-8-azaadenines are characterized by greater freedom inside A(1) receptors. This situation may be a favourable test of the hypothesized double disposition of these exogenous molecules within A(1) receptors.

Synthesis of N(6)-Substituted 2-Phenyl-8-Azaadenosines. Their Affinity for Adenosine A1 and A2 Receptors: a Comparison with the Corresponding 2-Phenyl-9-Benzyl-8-Azaadenines.

GIORGI, IRENE;LUCACCHINI, ANTONIO;MARTINI, CLAUDIA;
1995

Abstract

Comparison of the affinity towards adenosine receptors of 2-phenyl-8-azaadenosines, bearing a lipophilic substituent on N(6), with the corresponding 2-phenyl-8-azaadenines was carried out. The compounds have good A(1) affinity and high A(1) selectivity. The obtained Ki(rib)/Ki(benz) ratios for A(1) receptors, which showed variable values depending on the structure of the N(6) Substituent,confirmed that 2-phenyl-8-azaadenines are characterized by greater freedom inside A(1) receptors. This situation may be a favourable test of the hypothesized double disposition of these exogenous molecules within A(1) receptors.
Biagi, G; Giorgi, Irene; Livi, O; Scartoni, V; Lucacchini, Antonio; Martini, Claudia; Tacchi, P.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/22399
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