Synthesis of Guanosine and Deoxyguanosine Phosphoramidites with Cross-Linkable Thioalkyl Tethers for Direct Incorporation into RNA and DNA
作者:Xiaorong Hou、Gang Wang、Barbara L. Gaffney、Roger A. Jones
DOI:10.1080/15257770903368385
日期:2009.12.7
describe the synthesis of protected phosphoramidites of deoxyriboguanosine and guanosine derivatives containing a thiopropyl tether at the guanine N2 (7a,b) for site-specific crosslinking from the minor groove of either DNA or RNA to a thiol of a protein or another nucleic acid. The thiol is initially protected as a tert-butyl disulfide that is stable during oligonucleotide synthesis. While the completed
我们描述了脱氧核糖鸟苷和鸟苷衍生物的受保护亚磷酰胺的合成,在鸟嘌呤 N2 ( 7a , b ) 处含有硫丙基系链,用于从 DNA 或 RNA 的小沟与蛋白质或另一种核酸的硫醇进行位点特异性交联。硫醇最初被保护为叔丁基二硫醚,其在寡核苷酸合成过程中是稳定的。当完成的寡核苷酸仍附着在载体上时,或在纯化后,叔丁基硫醇可以很容易地被去除或被硫乙胺或5-硫代-2-硝基苯甲酸取代,它们具有更有利的交联速率。
Liang, Chien-Fu; Yan, Ming-Chung; Chang, Tsung-Che, Journal of the American Chemical Society, 2009, vol. 131, p. 3138 - 3139