2-(trimethylsilyl)ethyl as a phosphate protecting group in oligonucleotide synthesis
作者:Takeshi Wada、Mitsuo Sekine
DOI:10.1016/s0040-4039(00)75810-2
日期:1994.1
The 2-(trimethylsilyl)ethyl (TSE) group was found to be effective as a protecting group for the internucleotidic phosphate in oligonucleotide synthesis. Phosphoramidite buildingblocks having the TSE group were prepared in good yields. In the case of deoxyguanosine, a 2-N-unprotected phosphoramidite buildingblock was synthesized. These compounds were applied to the solid-phase synthesis of oligodeoxyribonucleotides
发现2-(三甲基甲硅烷基)乙基(TSE)基团作为寡核苷酸合成中核苷酸间磷酸的保护基是有效的。具有良好产率的具有TSE基团的亚磷酰胺构件被制备。在脱氧鸟苷的情况下,合成了2- N-未保护的亚磷酰胺结构单元。这些化合物被用于寡脱氧核糖核苷酸的固相合成。通过31 P NMR阐明了与未保护的鸟嘌呤部分相关的副反应。
SILYL PROTECTING GROUPS FOR OLIGONUCLEOTIDE SYNTHESIS REMOVED BY A ZnBr<sub>2</sub>TREATMENT
作者:Fernando Ferreira、François Morvan
DOI:10.1081/ncn-200060342
日期:2005.4.1
An oligonucleotideprotected with N-(trimethylsilyloxycarbonyl) (Teoc) and P-(trimethylsilylethanol) (Tse) groups was synthesized and deprotected by a single ZnBr2 treatment. Finally it was released from the solid support by cleavage of a disulfide linkage with TCEP. The oligonucleotide was obtained without any basic treatment.
Oligonucleotides protected with N-(trimethylsilyiethoxycarbonyl) (Teoc) and P-(trimethylsilylethanol) (Tse) groups were synthesized and deprotected by a single ZnBr2 treatment. Teoc group stabilized dA against depurination. This strategy was applied to the synthesis of base-sensitive oligonucleotide prodrugs bearing S-acetyl-2-thioethyl (Sate) phosphotriesters. (C) 2004 Elsevier Ltd. All rights reserved.