Synthesis of acyclic nucleoside derivatives

Organic compounds -- part of the class 532-570 series – Organic compounds – Chalcogen bonded directly to ring carbon of the purine ring...

Reexamination Certificate

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Reexamination Certificate

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11131646

ABSTRACT:
Novel processes towards the synthesis of the antiviral valomaciclovir stearate in which an esterified guanine acetal is reduced to the corresponding alcohol, reacted with an activated amino acid and N-deprotected. The esterified guanine acetal is prepared from a 9-guanine derivative bearing an acyclic hydroxymethylbutylacetal. The processes are amendable to one-pot reactions.

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