| 摘要 |
Provided is a ribonucleoside derivative represented by General Formula (I): (wherein R1 represents a hydrogen atom or the like, R2 represents a hydrogen atom or the like, R3 represents a methyl group or the like, and B represents a nucleic acid base residue optionally having a protecting group or a modifying group). An RNA containing this ribonucleoside derivative shows excellent hybridization ability and resistance to nuclease.
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