| abstract |
(57) [Problem] To provide a novel nucleoside compound which can be used as a starting material for obtaining oligonucleotides in large quantities or as a basic structural unit (building block) for extending a chain length. A nucleoside compound represented by the following formula (1). Embedded image (Wherein R 1 and R 2 represent a hydrogen atom or a protecting group usually used in nucleotide chemistry, R 3 represents a hydrogen atom, a hydroxyl group, an alkoxy group or a trialkylsilyloxy group, and A is a divalent group and arylene A linear or branched alkylene group which may contain a group or a hetero atom; B represents any one of the following formulas (2); Represents an integer of 3 or more. |