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Purine derivatives as A3 and A1 adenosine receptor agonists

Image Number 5 for United States Patent #7825126.

Disclosed are (N)-methanocarba adenine nucleosides of the formula: ##STR00001## as highly potent A.sub.3 adenosine receptor agonists, pharmaceutical compositions comprising such nucleosides, and a method of use of these nucleosides, wherein R.sub.1-R.sub.6 are as defined in the specification. These nucleosides are contemplated for use in the treatment a number of diseases, for example, inflammation, cardiac ischemia, stroke, asthma, diabetes, and cardiac arrhythmias. The invention also provides compounds that are agonists of both A.sub.1 and A.sub.3 adenosine receptors for use in cardioprotection.

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