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
Synthetic models related to DNA intercalating molecules: Preparation of 9-aminoacridines linked to the nucleotide bases adenine, guanine and thymine
作者:J. F. Constant、B. M. Carden、J. Lhomme
DOI:10.1002/jhet.5570220422
日期:1985.7
A series of novel compounds were prepared in which the aromatic ring of the drug quinacrine (2-methoxy-6-chloro-9-alkylaminoacridine) is linked to the nucleotide bases adenine, guanine and thymine by penta-and hexamethylene bridges.
Two new modified deoxyguanosine derivatives linked through their C-6 position to a psoralen and an acridine derivative have been synthesized and incorporated into oligonucleotide chains. Difficulties observed during the purification of oligonucleotides containing a stretch of G and one method used to solve this problem are discussed.
Solid-phase synthesis of modified oligodeoxyribonucleotides with an acridine derivative or a thiophosphate group at their 3′end
作者:U. Asseline、Nguyen T. Thuong
DOI:10.1016/s0040-4039(01)80440-8
日期:1989.1
Use of a derivatized support involving the 2,2′-diethyldithio-group allows the automatedsynthesis of oligodeoxyribonucleotide bearing acridine derivative (via nucleoside-3′-acridinylphosphoramidite ) or 3′phosphorothioate group (including the sulfurization step for attachment of the first nucleoside to the support).
The solid-phase preparation of oligodeoxyribonucleotides attached to intercalator or reactive groups through their 5'- and (or) 3'-ends is reported. These syntheses implicate the introduction of suitable masked functional groups at the 5'-end of the oligonucleotide by the intermediate of their phosphoramidite derivatives or at the 3'-end of the oligonucleotide using modified solid supports. After full deblocking, the functional groups (phosphate, thiophosphate, primary amine or thiol) can be reacted with the suitable reactive group involved in the chosen ligand. These methods allow the preparation of heterobifunctional derivatized oligodeoxyribonucleotides.