Patent ID: 11919922
Assignee: THE UNIVERSITY OF BERN
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  A  Y | IPC C

Claim 2:
3. The compound of claim 2, wherein the phosphorus moiety R2 is selected from the group consisting of a phosphate moiety of the formula (VIII), a phosphoramidate moiety of the formula (IX), and a phosphoramidite moiety of the formula (X):, wherein Y is O, or S;
R5 and R5′ are independently at each occurrence and of each other hydrogen, C1-C9alkyl, optionally substituted with cyano, nitro, halogen, —NHC(O)C1-C3alkyl, —NHC(O)C1-C3haloalkyl, C1-C3alkylsulfonyl; aryl, C1-C6alkylenearyl, C1-C6alkylenediaryl each independently of each other optionally substituted with cyano, nitro, halogen, C1-C4alkoxy, C1-C4haloalkyl, C1-C4haloalkoxy, —NHC(O)C1-C3alkyl, NHC(O)C1-C3haloalkyl, C1-C3alkylsulfonyl; or a hydroxyl protecting group;
R6 and R7 are independently of each other hydrogen, C1-C9alkyl optionally substituted with cyano, nitro, halogen, C2-C6alkenyl, C3-C6cycloalkyl, C1-C3alkoxy; aryl, optionally substituted with cyano, nitro, halogen, C1-C3 alkyl, C1-C3alkoxy; an amino protecting group; or together with the nitrogen atom to which they are attached form a heterocyclic ring, wherein said heterocyclic ring is optionally substituted with C1-C3 alkyl; and
the wavy line indicates the attachment to the oxygen of said OR2 group.