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A new strategy for the synthesis of oligodeoxynucleotides in the phosphoramidite method without base protection via phosphite intermediates
Author(s) -
A. Ohkubo,
Yuya Ezawa,
Kohji Seio,
M. SEKINE
Publication year - 2002
Publication title -
nucleic acids symposium series
Language(s) - English
Resource type - Journals
eISSN - 1746-8272
pISSN - 0261-3166
DOI - 10.1093/nass/2.1.29
Subject(s) - phosphoramidite , chemistry , deoxyadenosine , base (topology) , nucleophile , combinatorial chemistry , biochemistry , catalysis , dna , oligonucleotide , mathematics , mathematical analysis
Deoxyadenosine and deoxycytidine have highly nucleophilic amino groups. Therefore, without base protection, the undesired N-phosphitylations of these amino groups occur in the previous phosphoramidite methods. Now, we report that these N-phosphitylations were considerably suppressed in our new coupling strategy using HOBt as a promoter capable of formation of phosphite-type intermediates.

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