Synthesis of the TT pyrimidine (6–4) pyrimidone photoproduct–thio analogue phosphoramidite building block
作者:Sandra Karina Angulo Matus、Jean-Louis Fourrey、Pascale Clivio
DOI:10.1039/b305067j
日期:——
The phosphoramidite building block synthesis of the thio analogue at the 5,6-dihydropyrimidine C5 position of the thymidylyl(3â²â5â²)thymidine (6â4) photoproduct 1 is presented. This compound was readily obtained from the appropriately protected dinucleotide P-methyl-5â²-O-dimethoxytritylthymidilyl(3â²â5â²)-4-thiothymidine 2 after irradiation at 366 nm, then S-sulfenylmethylation of the thiol function of the resulting (6â4) adduct, and phosphitylation of the 3â²-hydroxyl group.
介绍了在胸苷(3′–5′)胸苷(6–4)光产物1的5,6-二氢嘧啶C5位置合成硫类似物的磷氨基酸分子构建块的合成。这种化合物可以通过对保护好的二核苷酸P-甲基-5′-O-二甲氧基三苯甲基胸苷(3′–5′)-4-硫胸苷2进行366 nm的照射后容易获得,然后对所得(6–4)加合物的巯基功能进行S-硫酰基甲基化,并对3′-羟基进行磷酸化。