Improved Protocol for the Synthesis of Flexibly Protected Morpholino Monomers from Unprotected Ribonucleosides
作者:Sankha Pattanayak、Sibasish Paul、Bappaditya Nandi、Surajit Sinha
DOI:10.1080/15257770.2012.724491
日期:2012.11
protected morpholino monomers from unprotected ribonucleosides in high overall yield, using oxidative glycol cleavage and reductive amination strategy. Unlike the previous methods, the present strategy allows installing the exocyclic amine protections at a later stage, and thus avoids the use of expensive, or commercially unavailable, exocyclic amine-protected ribonucleosides as starting materials. To
已经开发了一种廉价且大大改进的方案,使用氧化乙二醇裂解和还原胺化策略从未保护的核糖核苷以高总收率合成受保护的吗啉代单体。与先前的方法不同,本策略允许在稍后的阶段安装环外胺保护剂,从而避免使用昂贵的或市售的环外胺保护的核糖核苷作为起始原料。为了证明本发明方法在选择保护基上的灵活性,已在环外胺位置用几个具有不同解嵌段性质的此类基团保护了单体。