Oligonucleotides containing 2′-O-modified purines

Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives

Reexamination Certificate

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C536S022100, C536S026100, C536S027610, C536S027810, C536S024500

Reexamination Certificate

active

07101993

ABSTRACT:
Compounds are provided containing purine nucleotides that bear moieties X at the 2′ position thereof wherein X is R1—(R2)n; R1is C3-C20alkyl, C4-C20alkenyl or C2-C20alkynyl; R2is halogen, hydroxyl, thiol, keto, carboxyl, nitro, nitroso, nitrile, trifluoromethyl, trifluoromethoxy, O-alkyl, S-alkyl, NH-alkyl, N-dialkyl, O-aryl, S-aryl, NH-aryl, O-aralkyl, S-aralkyl, NH-aralkyl, amino, N-phthalimido, imidazole, azido, hydrazino, hydroxylamino, isocyanato, sulfoxide, sulfone, sulfide, disulfide, silyl, aryl, heterocycle, carbocycle, intercalator, reporter molecule, conjugate, polyamine, polyamide, polyalkylene glycol, polyether, a group that enhances the pharmacodynamic properties of oligonucleotides, or a group that enhances the pharmacokinetic properties of oligonucleotides; and n is an integer from 0 to about 6. Such compounds are useful for modulating the synthesis of proteins.

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