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Journal of medicinal chemistry

Semi-rational design of (north)-methanocarba nucleosides as dual acting A(1) and A(3) adenosine receptor agonists: novel prototypes for cardioprotection.


PMID 16366590

Abstract

Ring-constrained adenosine analogues have been designed to act as dual agonists at tissue-protective A(1) and A(3) adenosine receptors (ARs). 9-Ribosides transformed into the ring-constrained (N)-methanocarba-2-chloro-5'-uronamides consistently lost affinity at A(1)/A(2A)ARs and gained at A(3)AR. Among 9-riboside derivatives, only N(6)-cyclopentyl and 7-norbornyl moieties were extrapolated for mixed A(1)/A(3) selectivity and rat/human A(3)AR equipotency. Consequently, 2 was balanced in affinity and potency at A(1)/A(3)ARs as envisioned and dramatically protected in an intact heart model of global ischemia and reperfusion.

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C7938
2-Chloro-N6-cyclopentyladenosine, adenosine receptor agonist
C15H20ClN5O4