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KMID : 1059519860300010090
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Journal of the Korean Chemical Society
1986 Volume.30 No. 1 p.90 ~ p.100
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Chemical Synthesis of an Oligodeoxyribonucleotide
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Song Byong-Soo
Lee Sang-Jik
Kim Jong-Dae
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Abstract
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Along with synthesizing a model oligodeoxyribonuclotide GpApApTpTpCp which had the EcoRI recognition site according to "Phosphotriester Method", reported methods for protecting functions, condensation, deprotection, purifying products, quantification and identification were evaluated and modified. It was realized that oligomers were efficiently synthesized by elongating by dimer unit per step of the condensation and the condensation yields were decreased with increased numbers of the residues. The problems of quantification/identification involved in the oligonucleotide synthesis using small amount of the reactants were solved by employing UV/IR spectrophotometry and hplc/tlc. It was also proved that a nucleotide having the exposed 5'-OH function was well synthesized by condensing a 5'-OH nucleotide and a phosphodiester nucleotide whose molar ratio was intendedly made to be 1 : 1.2 and then detritylating followed by washing with an aqueous solution of sodium bicarbonate. Spectrophotometric and chromatographic data of the nucleotides and their derivatives concerned in this synthetic work were prepared.
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