Nucleotides, Part LXVI,β-Heteroarylethyl Groups - New Phosphate-Protecting Groups for Phosphotriester Chemistry
作者:Tilman Reiner、Evgeny Kvasyuk、Wolfgang Pfleiderer
DOI:10.1002/1522-2675(20001108)83:11<3053::aid-hlca3053>3.0.co;2-x
日期:2000.11.8
pyridine-4-ethanols, were tested as a new type of phosphate-protecting groups in the synthesis of oligonucleotides by the phosphotriester approach. The synthesis of 5′-O-(monomethoxytrityl)thymidine 3′-(β-heteroarylethyl 2,5-dichlorophenyl phosphates) 13 – 17 and 21 provided useful monomeric building blocks in which the various blocking groups could be removed selectively by acid (MeOTr), oximate (2,5-dichlorophenyl
合成了β-杂芳基取代的乙醇6-10,并与吡啶-2-乙醇和吡啶-4-乙醇一起作为磷酸三酯合成寡核苷酸中的新型磷酸保护基团进行了测试。5'-O-(单甲氧基三苯甲基)胸苷 3'-(β-杂芳基乙基 2,5-二氯苯基磷酸酯) 13-17 和 21 的合成提供了有用的单体结构单元,其中各种保护基团可以通过酸 (MeOTr )、肟酸盐(2,5-二氯苯基磷酸酯)和 1,8-二氮杂双环[5.4.0]undec-7-ene (DBU)(杂芳基乙基磷酸酯)处理。合成了新的、完全封闭的二聚体 38-41,在磷酸盐部分具有 β-杂芳基乙基保护基团。