Synthesis of acyclic nucleoside derivatives

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters

Reexamination Certificate

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C560S179000, C560S231000

Reexamination Certificate

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06878844

ABSTRACT:
Methods and novel intermediates for the preparation of acyclic nucleoside derivatives of the formula:where one of R1and R2is an amino acid acyl group and the other of R1and R2is a —C(O)C3-C21saturated or monounsaturated, optionally substituted alkyl and R3is OH or H; or a pharmaceutically acceptable salt thereof.

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