Patent ID: 7547684

Claim:
A bicyclic nucleoside having the formula: wherein: Bx is a heterocyclic base moiety; one of T 1 and T 2 is H or a hydroxyl protecting group and the other of T 1 and T 2 is H, a hydroxyl protecting group or a reactive phosphorus group; Z is C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, substituted C 1 -C 6 alkyl, substituted C 2 -C 6 alkenyl, substituted C 2 -C 6 alkynyl or substituted acyl (—C(═O)—); wherein each substituted group is mono or poly substituted with substituent groups independently selected from halogen, C 1 -C 6 alkyl, substituted C 1 -C 6 alkyl, C 2 -C 6 alkenyl, substituted C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, substituted C 2 -C 6 alkynyl, OJ 1 , SJ 1 , NJ 1 J 2 , N 3 , COOJ 1 , CN, O—C(═O)NJ 1 J 2 , N(H)C(═NH)NR 1 R 2 or N(H)C(═X)N(H)J 2 wherein X is O or S; and each J 1 and J 2 is, independently, H, C 1 -C 6 alkyl, substituted C 1 -C 6 alkyl, C 2 -C 6 alkenyl, substituted C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, substituted C 2 -C 6 alkynyl, C 1 -C 6 aminoalkyl, substituted C 1 -C 6 aminoalkyl or a protecting group.