Method for chemical synthesis of oligonucleotides

C - Chemistry – Metallurgy – 07 – H

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C07H 21/00 (2006.01) C07D 233/58 (2006.01) C07H 19/04 (2006.01)

Patent

CA 2246909

The present invention provides a practical method capable of chemically synthesizing a 100-mer or more long- chain 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.

La présente invention porte sur une méthode pratique pour la synthèse chimique, facile et fiable, d'oligonucléotides à chaîne de 100 mères ou plus; nouveau composé utilisé dans cette méthode. La présente invention porte sur une méthode pour la synthèse chimique d'un oligonucléotide par la méthode du phosphoroamidite, consistant à préparer un phosphoroamidite de nucléoside à base non protégée à partir d'un nucléoside à base non protégée, grâce à l'emploi d'un imidazole- trifluorométhanesulfonate représenté par la formule chimique qui suit; couplage dudit phosphoroamidite de nucléoside à base non protégée dans un ordre déterminé d'avance pour synthétiser chimiquement un oligonucléotide constitué d'une séquence spécifique de nucléotides; l'invention porte aussi sur un imidazole-trifluorométhanesulfonate représenté par ladite formule chimique.

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