Synthesis of 2-substituted adenosines
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United States of America Patent
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Issued Date -
May 21, 2009
app pub date -
Dec 3, 2004
filing date -
Dec 5, 2003
priority date (Note) -
Abandoned
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Abstract
Synthesis of 2-substituted adenosines of formula (I) using 2-nitro pentabenzoyl adenosine, or 2-nitro pentaacetyl adenosine, as intermediate is described: Formula (I) wherein R=C1-6 alkoxy (straight or branched), a phenoxy group (unsubstituted, or mono-, or di-substituted by halo, amino, CF3—, cyano, nitro, C1-4 alkyl, or C1-4 alkoxy), a benzyloxy group (unsubstituted, or mono-, or di-substituted by halo, amino, CF3—, cyano, nitro, C1-6 alkyl, or C1-6 alkoxy), or a benzoyl group (unsubstituted, or mono-, or di-substituted by halo, amino, CF3—, cyano, nitro, C1-6 alkyl, or C1-6 alkoxy). The methods provide improved yield and purity of product.
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