PROBLEM TO BE SOLVED: To provide a method for producing a [1-13C]DOX (1-deoxy-D-xylulose) synthesizable in a large amount and to obtain a DOX derivative that is stable and efficiently taken by a cell.
SOLUTION: The [1-13C]DOX represented by formula (III) (R1, R2and R3are the same or different and are each a hydroxy-protecting group) is obtained by reacting an amide compound represented by formula (I) with a13C-methyl Grignard reagent to give a ketone compound represented by formula (II) and then removing a hydroxy-protecting group of the ketone compound (II). In this extremely efficient production method, a13C isotope is introduced into carbon at the 1-position of DOX and deprotection reaction is carried out by hydrogenation. Since the final deprotection reaction is carried out in a homogeneous system, isolation of relatively unstable and water-soluble [1-13C]DOX (III) is performed by a simple operation of only concentration and the method has high general-purpose properties.
COPYRIGHT: (C)2005,JPO&NCIPI
需要解决的问题:提供一种能够大量合成[1-
13C]DOX(1-去氧-
D-木糖醛酮)的方法,并获得一种稳定且能够被细胞有效吸收的DOX衍
生物。
解决方法:通过将式(I)表示的酰胺化合物与
13C-甲基Grignard试剂反应,得到式(II)表示的酮化合物,然后去除酮化合物(II)的羟基保护基,从而获得式(III)表示的[1-
13C]DOX(其中R
1,R
2和R
3相同或不同,均为羟基保护基)。在这种极其高效的生产方法中,将
13C同位素引入到DOX的1位碳中,并通过氢化反应进行去保护反应。由于最终的去保护反应在均相体系中进行,因此只需进行浓缩操作即可分离相对不稳定且
水溶性较强的[1-
13C]DOX(III),该方法具有高度的通用性。
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CIPI