Fluoride-Labile Protecting Groups for the Synthesis of Base-Sensitive Methyl-SATE Oligonucleotide Prodrugs
作者:Typhaine Guerlavais-Dagland、Albert Meyer、Jean-Louis Imbach、François Morvan
DOI:10.1002/ejoc.200300069
日期:2003.6
Base-sensitive methyl-SATE oligonucleotide prodrugs (prooligos) were synthesized using fluoride-labile protection groups on the nucleobases and on certain internucleosidic phosphate linkages. The combination of [(tert-butyl)(diphenyl)silyloxymethyl]benzoyl (SiOMB) and (trimethylsilyl)ethyl (TSE) groups is well adapted for synthesis of these compounds using phosphoramidite chemistry on a solid support. The
碱基敏感的甲基 SATE 寡核苷酸前药 (prooligos) 是使用核碱基和某些核苷间磷酸键上的氟不稳定保护基团合成的。[(叔丁基)(二苯基)甲硅烷氧基甲基]苯甲酰基(SiOMB)和(三甲基甲硅烷基)乙基(TSE)基团的组合非常适合在固体载体上使用亚磷酰胺化学合成这些化合物。prooligo 通过氨基磷酸酯键固定在支持物上。在 THF 中用 Et3N·3HF 进行最终处理可有效地从固体支持物中释放原寡核苷酸并裂解 SiOMB 和 TSE 基团。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)