Second-generation synthesis of protected phosphonothiodifluoromethylene analogues of nucleoside-3′-phosphates
作者:Irina Kalinina、Arnaud Gautier、Carmen Salcedo、Jean-Yves Valnot、Serge R Piettre
DOI:10.1016/j.tet.2004.03.082
日期:2004.5
A practical, eight-step synthesis of the key intermediate 14 in 19% overall yield from α-d-xylose is described. The preparation can be carried out on multi-gram scale and involves the use of the organomagnesium reagent 2d. The capability of derivative 14 to be transformed into the title compounds is examplified by the preparation of 15. Additionally, X-ray crystallography of intermediate 12 provided
描述了一种实用的八步合成关键中间体14的方法,该方法可从α-d-木糖获得19%的总收率。制备可以以克为单位进行,并且涉及有机镁试剂2d的使用。制备15可证明衍生物14转化为标题化合物的能力。此外,中间体12的X射线晶体学提供了有关二氟硫代磷酸酯的第一结构数据。