专利号:WO-2007064291-A1 优先权日:2005-11-30 标 题:Method and compounds for rna synthesis 发明人:CHATTOPADHYAYA JYOTI 权利人:CHATTOPADHYAYA JYOTI 摘要:The 2-(4-tolylsulfonyl)ethoxymethyl (TEM) as a new 2'-OH protecting group is reported for the RNA synthesis on the solid support using the phosphoramidite chemistry. The usefulness of the 2'-0-TEM group is exemplified by the synthesis of 12 different oligo-RNAs of various sizes (14-38nt long). The stepwise coupling yield varied from 97 - 99 % with an optimized coupling time of 120s. Synthesis of all four pure phosphoramidite building blocks are also described. Two new reliable parameters, δc2' - δc3s and δn2' - δH3' have been suggested for the characterization of isomeric 2'-0-TEM and 3'-0-TEM as well as other isomeric mono 273 '-protected ribonucleoside derivatives. The most striking feature of this strategy is that the crude RNA prepared using our 2'-0-TEM strategy is sufficiently pure (>90 %) for molecular biology research without any additional purification step, thereby making oligo-RNAs easily available at a relatively low cost, saving both time and lab resources.
专利号:CN-105566235-A 优先权日:2016-03-03 标题:Method for step-by-step synthesis of NH-1,2,3-triazoles catalyzed by aluminum salts