METHOD FOR THE SOLID-PHASE BASED SYNTHESIS OF PHOSPHATE-BRIDGED NUCLEOSIDE CONJUGATES

A method for producing phosphate-bridged nucleoside conjugates, in particular poly- or oligonucleosides. In the method, an immobilized cyclosaligenyl derivative of a nucleoside, nucleotide, poly- or oligonucleotide, poly- or oligonucleoside, or an analog thereof, is synthesized, and the subsequent reaction with a nucleophile yields the desired phosphate-bridged nucleoside conjugate, which may subsequently be released from the solid phase.