An Improved Method for Synthesizing Cyclic Bis(3′–5′)diguanylic Acid (<i>c</i>-di-GMP)
作者:Mamoru Hyodo、Yoshihiro Hayakawa
DOI:10.1246/bcsj.77.2089
日期:2004.11
This paper describes a new method for synthesizing biologically important cyclic bis(3′–5′)diguanylic acid (c-di-GMP) in a higher yield than that previously reported to be available by our synthetic method. In the new synthesis, the following two means, in place of those used in the previously reported synthesis, are employed as main strategies to obtain an increase in product yield. One is the use of di-tert-butylsilanediyl protection for 3′- and 5′-hydroxy groups of guanosine; this method allows regioselective production of a 2′-O-(tert-butyldimethylsilyl)guanosine derivative that is a key intermediate for the synthesis. The other is the use of a dimethylformamidine group as a protector for the 2-NH2 function of the guanine base, which can be easily introduced and results in an excellent yield.
本文描述了一种新方法,用于合成生物重要的环状双(3′–5′)二鸟苷酸 (c-di-GMP),其产量高于我们之前报道的合成方法。本新合成方法采用以下两种手段,替代之前所使用的方法,作为提高产物产量的主要策略。其中之一是使用二叔丁基硅烷保护基团保护鸟苷的 3′-和 5′-羟基;该方法允许选择性合成 2′-O-(叔丁基二甲基硅基)鸟苷衍生物,这是合成过程中的关键中间体。另一个是使用二甲基甲酰胺基作为鸟嘌呤碱基 2-NH2 功能的保护基,这种保护基易于引入并能获得优异的产量。