N-substituted-aminomethylene bridged bicyclic nucleic acid analogs
AssigneeIsis Pharmaceuticals, Inc.
InventorsThazha P. Prakash, Balkrishin Bhat, Eric E. Swayze
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Abstract
Provided herein are bicyeMc nucleosides comprising a substituted amino group in the bridge, oligomeric compounds having at least one of these bicyclic nucleosides and methods of using the oligomeric compounds. The bicyclic nucleosides comprising a substituted amino group in the bridge are useful for enhancing properties of oligomeric compounds including nuclease resistance, in certain embodiments, the oligomeric compounds hybridize to a portion of a target RNA resulting in loss of normal function of the target RNA.
Claims30
A bicyclic nucleoside having Formula I:
- wherein:
- Bx is a heterocyclic base moiety;
- one of T1 and T2 is H or a hydroxyl protecting group and the other of T1 and T2 is H, a hydroxyl protecting group or a reactive phosphorus group;
- R is C1-C6 alkyl, substituted C1-C6 alkyl, C2-C6 alkenyl, substituted C2-C6 alkenyl, C2-C6 alkynyl or substituted C2-C6 alkynyl;
- q1 and q2 are each independently, H, halogen, C1-C6 alkyl, substituted C1-C6 alkyl, C2-C6 alkenyl, substituted C2-C6 alkenyl, C2-C6 alkynyl or substituted C2-C6 alkynyl, C1-C6 alkoxyl, substituted C1-C6 alkoxyl, acyl, substituted acyl, C1-C6 aminoalkyl or substituted C1-C6 aminoalkyl;
- q3 and q4 are each independently, H, halogen, C1-C6 alkyl, substituted C1-C6 alkyl, C2-C6 alkenyl, substituted C2-C6 alkenyl, C2-C6 alkynyl or substituted C2-C6 alkynyl, C1-C6 alkoxyl, substituted C1-C6 alkoxyl, acyl, substituted acyl, C1-C6 aminoalkyl or substituted C1-C6 aminoalkyl;
- wherein each substituted group is, independently, mono or poly substituted with substituent groups independently selected from halogen, OJ1, SJ1, NJ1J2, N3, COOJ1, CN, O—C(═O)NJ1J2, N(H)C(═NH)NJ1J2 or N(H)C(═X)N(H)J2 wherein X is O or S;
- and
- each J1 and J2 is, independently, H, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, C1-C6 aminoalkyl or a protecting group.
An oligomeric compound comprising at least one bicyclic nucleoside having Formula II:
- wherein independently for each of said at least one bicyclic nucleoside having Formula II:
- Bx is a heterocyclic base moiety;
- T3 and T4 are each, independently, an internucleoside linking group linking the bicyclic nucleoside to the oligomeric compound or one of T3 and T4 is an internucleoside linking group linking the bicyclic nucleoside to the oligomeric compound and the other of T3 and T4 is H, a hydroxyl protecting group, a linked conjugate group or a 5′ or 3′-terminal group;
- R is C1-C6 alkyl, substituted C1-C6 alkyl, C2-C6 alkenyl, substituted C2-C6 alkenyl, C2-C6 alkynyl or substituted C2-C6 alkynyl;
- q1 and q2 are each independently, H, halogen, C1-C6 alkyl, substituted C1-C6 alkyl, C2-C6 alkenyl, substituted C2-C6 alkenyl, C2-C6 alkynyl or substituted C2-C6 alkynyl, C1-C6 alkoxyl, substituted C1-C6 alkoxyl, acyl, substituted acyl, C1-C6 aminoalkyl or substituted C1-C6 aminoalkyl;
- q3 and q4 are each independently, H, halogen, C1-C6 alkyl, substituted C1-C6 alkyl, C2-C6 alkenyl, substituted C2-C6 alkenyl, C2-C6 alkynyl or substituted C2-C6 alkynyl, C1-C6 alkoxyl, substituted C1-C6 alkoxyl, acyl, substituted acyl, C1-C6 aminoalkyl or substituted C1-C6 aminoalkyl;
- wherein each substituted group is, independently, mono or poly substituted with substituent groups independently selected from halogen, OJ1, SJ1, NJ1J2, N3, COOJ1, CN, O—C(═O)NJ1J2, N(H)C(═NH)NJ1J2 or N(H)C(═X)N(H)J2 wherein X is O or S;
- and
- each J1 and J2 is, independently, H, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, C1-C6 aminoalkyl or a protecting group.
Dependencies are inferred from the claim text.