[EN] DEUTERATED CHEMICAL MODIFICATION AND OLIGONUCLEOTIDE INCLUDING SAME<br/>[FR] MODIFICATION CHIMIQUE DEUTÉRÉE ET OLIGONUCLÉOTIDE LA COMPRENANT<br/>[ZH] 氘代化学修饰和包含其的寡核苷酸
A phosphoramidite bearing a 2-(methylamino)pyrimidin-4-yl nucleobase was synthesized and the modified oligonucleotide (triplex-forming oligonucleotide, TFO) was successfully obtained using the phosphoramidite on an automated DNA synthesizer. UV-melting experiment of triplex DNA between the synthesized TFO and duplex DNA targets indicated that the 2-aminopyrimidin-4-yl unit in TFO could be a useful core structure for recognition of a TA base pair in duplex DNA.