The present disclosure describes substituted α-L-bicyclic nucleoside analogs, oligomeric compounds prepared therefrom and methods of using the oligomeric compounds. More particularly, substituted α-L-bicyclic nucleoside analogs are provided, having one or more chiral substituents, that are useful fo
The present disclosure describes substituted α-L-bicyclic nucleoside analogs, oligomeric compounds prepared therefrom and methods of using the oligomeric compounds. More particularly, substituted α-L-bicyclic nucleoside analogs are provided, having one or more chiral substituents, that are useful for enhancing properties of oligomeric compounds including binding affinity. In some embodiments, the oligomeric compounds provided herein hybridize to a portion of a target RNA resulting in loss of normal function of the target RNA.
대표청구항▼
1. 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;q1, q2, q3, q4, q5 and q6 are each, independently, H, C1-C6 alkyl, C2
1. 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;q1, q2, q3, q4, q5 and q6 are each, independently, H, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, substituted C1-C6 alkyl, substituted C2-C6 alkenyl or substituted C2-C6 alkynyl;wherein each substituted group is, independently, mono or poly substituted with optionally protected substituent groups independently selected from halogen, oxo, OJ1, NJ1J2, SJ1, N3, OC(═O)J1 and CN, wherein each J1 and J2 is, independently, H or C1-C6 alkyl; andwherein at least one of q1, q2, q3, q4, q5 and q6 is other than H. 2. The bicyclic nucleoside of claim 1 wherein at least one of q1, q2, q3, q4, q5 and q6 is C1-C6 alkyl or substituted C1-C6 alkyl. 3. The bicyclic nucleoside of claim 1 wherein at least one of q1, q2, q3, q4, q5 and q6 is substituted C1-C6 alkyl having at least one substituent group selected from fluoro and OCH3. 4. The bicyclic nucleoside of claim 1 wherein at least one of q1, q2, q3, q4, q5 and q6 is methyl. 5. The bicyclic nucleoside of claim 1 having Formula II: wherein: Bx is a heterocyclic base moiety; andone 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. 6. The bicyclic nucleoside of claim 1 having Formula III: wherein: Bx is a heterocyclic base moiety; andone 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. 7. The bicyclic nucleoside of claim 1 having Formula IV: wherein: Bx is a heterocyclic base moiety; andone 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. 8. The bicyclic nucleoside of claim 1 having Formula IX: wherein: Bx is a heterocyclic base moiety; andone 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. 9. The bicyclic nucleoside of claim 1 wherein T1 is 4,4′-dimethoxytrityl and T2 is diisopropylcyanoethoxy phosphoramidite. 10. An oligomeric compound comprising at least one bicyclic nucleoside having Formula V: wherein independently for each bicyclic nucleoside having Formula V: Bx is a heterocyclic base moiety;T3 and T4 are each, independently, hydroxyl, a protected hydroxyl, a linked conjugate group or an internucleoside linking group attaching the bicyclic nucleoside to the oligomeric compound wherein at least one of T3 and T4 is an internucleoside linking group attaching the bicyclic nucleoside to the oligomeric compound;q1, q2, q3, q4, q5 and q6 are each, independently, H, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, substituted C1-C6 alkyl, substituted C2-C6 alkenyl or substituted C2-C6 alkynyl;wherein each substituted group is, independently, mono or poly substituted with optionally protected substituent groups independently selected from halogen, oxo, OJ1, NJ1J2, SJ1, N3, OC(═O)J1 and CN, wherein each J1 and J2 is, independently, H or C1-C6 alkyl; andwherein at least one of q1, q2, q3, q4, q5 and q6 is other than H. 11. The oligomeric compound of claim 10 wherein at least one of q1, q2, q3, q4, q5 and q6 is C1-C6 alkyl or substituted C1-C6 alkyl for at least one of said bicyclic nucleoside of Formula V. 12. The oligomeric compound of claim 11 wherein each substituted C1-C6 alkyl comprises at least one substituent group selected from fluoro and OCH3. 13. The oligomeric compound of claim 10 wherein at least one of q1, q2, q3, q4, q5 and q6 is methyl for at least one of said bicyclic nucleoside of Formula V. 14. The oligomeric compound of claim 10 wherein at least one of said bicyclic nucleoside has Formula VI: wherein: Bx is a heterocyclic base moiety; andT3 and T4 are each, independently, hydroxyl, a protected hydroxyl, a linked conjugate group or an internucleoside linking group attaching the bicyclic nucleoside to the oligomeric compound wherein at least one of T3 and T4 is an internucleoside linking group attaching the bicyclic nucleoside to the oligomeric compound. 15. The oligomeric compound of claim 10 wherein at least one of said bicyclic nucleoside has Formula VII: wherein: Bx is a heterocyclic base moiety; andT3 and T4 are each, independently, hydroxyl, a protected hydroxyl, a linked conjugate group or an internucleoside linking group attaching the bicyclic nucleoside to the oligomeric compound wherein at least one of T3 and T4 is an internucleoside linking group attaching the bicyclic nucleoside to the oligomeric compound. 16. The oligomeric compound of claim 10 wherein at least one of said bicyclic nucleoside has Formula VIII: wherein: Bx is a heterocyclic base moiety; andT3 and T4 are each, independently, hydroxyl, a protected hydroxyl, a linked conjugate group or an internucleoside linking group attaching the bicyclic nucleoside to the oligomeric compound wherein at least one of T3 and T4 is an internucleoside linking group attaching the bicyclic nucleoside to the oligomeric compound. 17. The oligomeric compound of claim 10 wherein at least one of said bicyclic nucleoside has Formula X: wherein: Bx is a heterocyclic base moiety; andT3 and T4 are each, independently, hydroxyl, a protected hydroxyl, a linked conjugate group or an internucleoside linking group attaching the bicyclic nucleoside to the oligomeric compound wherein at least one of T3 and T4 is an internucleoside linking group attaching the bicyclic nucleoside to the oligomeric compound. 18. The oligomeric compound of claim 10 wherein each internucleoside linking group is, independently, selected from phosphodiester or phosphorothioate. 19. The oligomeric compound of claim 10 wherein each internucleoside linking group is a phosphorothioate. 20. The oligomeric compound of claim 10 comprising at least one region of at least two contiguous bicyclic nucleosides having Formula V. 21. The oligomeric compound of claim 20 further comprising at least one region of from 8 to 14 contiguous β-D-2′-deoxyribofuranosyl nucleosides. 22. The oligomeric compound of claim 20 further comprising at least one region of from 9 to 12 contiguous β-D-2′-deoxyribofuranosyl nucleosides. 23. The oligomeric compound of claim 10 comprising one region of from 2 to three contiguous bicyclic nucleosides having Formula V, an optional second region of 1 or 2 contiguous bicyclic nucleosides having Formula V and a third region of from 8 to 14 β-D-2′-deoxyribofuranosyl nucleosides wherein said third region is located between said first and said second regions. 24. The oligomeric compound of claim 10 comprising from 8 to 40 monomer subunits. 25. The oligomeric compound of claim 10 wherein q1, q2, q3, q4, q5 and q6 are uniformly modified for each of said at least one bicyclic nucleoside having Formula V. 26. A method of inhibiting gene expression comprising contacting one or more cells, a tissue or an animal with an oligomeric compound of claim 10 wherein said oligomeric compound is complementary to a target RNA. 27. The method of claim 26 wherein said cells are in a human. 28. The method of claim 26 wherein said target RNA is selected from mRNA, pre-mRNA and micro RNA. 29. The method of claim 28 wherein said target RNA is mRNA. 30. The method of claim 28 wherein said target RNA is human mRNA. 31. The method of claim 26 wherein said target RNA is cleaved thereby inhibiting its function. 32. The method of claim 26 further comprising detecting the levels of target RNA.
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