Artificial nucleic acids of n-o bond crosslinkage type
First Claim
1. A compound of the following general formula (I) and a salt thereof:
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Abstract
An oligonucleotide analogue useful for the antisense method, etc., having excellent enzyme resistance, having potent selective binding affinity for single-stranded RNA, and further having an excellent triplex-forming capacity with double-stranded DNA, and a nucleoside analogue useful for its production are provided.
Nucleoside analogues, which are compounds of the general formula (I) and salts thereof, and oligonucleotide analogues containing one or more of the nucleoside analogues:
where Base is an aromatic heterocyclic group or the like optionally having a substituent; R1, R2 and R3 are each a hydrogen atom, a protective group for an amino group, a protective group for a hydroxyl group, a phosphate group, or —P(R4)R5 [where R4 and R5 are each a hydroxyl group, a protected hydroxyl group, a mercapto group, a protected mercapto group, etc.]; m=0 to 2; and n=1 to 3].
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Citations
20 Claims
- 1. A compound of the following general formula (I) and a salt thereof:
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11. An oligonucleotide analogue, as a DNA oligonucleotide or RNA oligonucleotide analogue, containing one or two or more of one or more types of unit structures of nucleoside analogues represented by the following general formula (II), or a pharmacologically acceptable salt thereof, provided that a form of linking between respective nucleosides in the oligonucleotide analogue may contain one or two or more phosphorothioate bonds [—
- OP(O)(S−
)O—
] aside from a phosphodiester bond [—
OP(O2−
)O—
] identical with that in a natural nucleic acid, and if two or more of one or more types of these structures are contained, Base may be identical or different between these structures. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
- OP(O)(S−
Specification