A FACILE SYNTHESIS OF 5′-END SOLID-ANCHORED, 3′-END FREE OLIGODEOXYRIBONUCLEOTIDES VIA THE (5′ → 3′)-ELONGATED PHOSPHORAMIDITE STRATEGY
摘要:
It is demonstrated that not only N-2- but also O-6-protection of the guanine base is necessary for obtaining the oligodeoxyribonucleotides in high yields and at a high purity in the solid-phase synthesis via the (5 ' --> 3 ')-chain elongated phosphoramidite approach.
A novel approach to oligodeoxyribonucleotides bearing phosphoric acid esters at the 3′-terminals via the phosphoramidite method with allyl protection: An efficient synthesis of base-labile nucleotide-amino acid and -peptide conjugates
A new method for synthesis of 3′-end-phosphorylated DNA oligomers via the phosphoramidite method with allyl protection has been developed. This method is particularly useful for the preparation of derivatives with base-labile structures such as oligoDNA-OPO(OH)OCH2CH(R)Z, in which Z is an electron-withdrawing function. For example, a oligonucleotide-amino acid conjugate, 5′TGTCGACACCCAATT3′-OPO(OH)OCH2CH(NH2)COOH