A Novel Synthesis of Oligonucleotide–Peptide Conjugates with a Base-Labile Phosphate Linker between the Two Components According to the Allyl-Protected Phosphoramidite Strategy
作者:Akira Sakakura、Yoshihiro Hayakawa
DOI:10.1016/s0040-4020(00)00376-8
日期:2000.6
the hydroxyl of a serine or threonine residue of a peptide by a phosphodiester bond. This synthesis utilizes the phosphoramidite method with allyl for the phosphate linkages and the C-terminal of the peptide and allyloxycarbonyl for the nucleoside bases and the N-terminal of the peptide. In this synthesis, the removal of the allylic protecting groups and the detachment of the products was achieved under
of deoxyribonucleoside 3'-(allyl N,N-diisopropylphosphoramidite)s or 3'-(2-cyanoethyl N,N-diisopropylphosphoramidite)s employed in the preparation of deoxyribonucleotides, and 3'-O-(tert-butyldimethylsilyl)ribonucleoside 2'-(N,N-diisopropylphosphoramidite)s or 2'-O-(tert-butyldimethylsilyl)ribonucleoside3'-(N,N-diisopropylphosphoramidite)sused for the formation of 2'-5' and 3'-5' internucleotide linkages
[GRAPHICS]A convenient method for the oxidation of nucleoside phosphites into phosphates under nonbasic and nonaqueous conditions using commercially available ethyl(methyl)dioxirane has been developed. This oxidation is effective with both N-protected and N-unprotected strategies.
Allyl Protection in the Synthesis of Oligodeoxyribonucleotide Phosphorothioates
作者:Yoshihiro Hayakawa、Masaaki Hirose、Ryoji Noyori
DOI:10.1080/15257779408012156
日期:1994.7
Allyl and allyloxycarbonyl groups serve as useful protectors for internucleotide linkages and nucleoside bases, respectively, in the synthesis of partially or fully phosphorothioate-modified oligodeoxyribonucleotides.
Benzimidazolium Triflate as an Efficient Promoter for Nucleotide Synthesis via the Phosphoramidite Method