| abstract |
A compound represented by the general formula (1) and a salt thereof. (In the formula, A is an alkylene group having 1 to 2 carbon atoms, etc .; B is an aromatic heterocyclic group which may have a substituent, etc .; R 1 and R 2 are hydrogen atoms, hydroxyl groups for nucleic acid synthesis; Protecting group, phosphoric acid group, -P (R 4 ) R 5 wherein R 4 and R 5 are the same or different and are a hydroxyl group, a hydroxyl group protected with a protecting group for nucleic acid synthesis, a mercapto group, nucleic acid synthesis And R 3 represents a hydrogen atom, a halogen atom, a hydroxyl group, a hydroxyl group protected with a protecting group for nucleic acid synthesis, and the like. This compound is useful for producing oligonucleotide analogues useful for antisense methods, antigene methods, and the like, and intermediates thereof. |