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Bioorganic & medicinal chemistry

Synthesis of theophylline derivatives and study of their activity as antagonists at adenosine receptors.


PMID 20202853

Abstract

The synthesis of oligo(ethylene glycol)-alkene substituted theophyllines in positions 7 and/or 8 is described. The binding activity at adenosine receptors of selected derivatives was studied. Compound 2 showed high affinity for human A(2B) receptor (K(i) = 4.16 nM) with a selectivity K(iA2A)/K(iA2B) of 24.1, and a solubility in water of 1 mM. The alkenyl substituent in some of the theophylline derivatives allows for covalent attachment of them onto hydrogen-terminated silicon substrate surfaces via hydrosilylation. Alternatively, an azido group was incorporated to an oligo(ethylene glycol)theophylline derivative as an anchor for tethering the molecules on ethynyl presenting surfaces via click reaction.

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