METHOD FOR CHEMICAL SYNTHESIS OF OLIGONUCLEOTIDES

摘要

The present invention provides a practical method capable of chemically synthesizing a 100-mer or more longchain oligonucleotide easily and reliably and a novel compound used in said method. The present invention relates to a method for chemical synthesis of an oligonucleotide by the phosphoroamidite method, which comprises preparing a base moiety-unprotected nucleoside phosphoroamidite from a base moiety-unprotected nucleoside by use of an imidazole trifluoromethanesulfonate represented by the following chemical formula, and coupling said base moiety-unprotected nucleotide phosphoroamidite in a predetermined order to chemically synthesize an oligonucleotide consisting of a specific nucleotide sequence, as well as to an imidazole trifluoromethanesulfonate represented by the chemical formula.