Gram-scale synthesis and efficient purification of<sup>13</sup>C-labeled levoglucosan from<sup>13</sup>C glucose
作者:Lisa Alexander、Caroline Hoyt、Ryszard Michalczyk、Ruilian Wu、Dave L. Thorn、L. A. ‘Pete’ Silks
DOI:10.1002/jlcr.2978
日期:2013.1
13C-Labeled levoglucosan has been synthesized and purified in good yield, and on the gram scale in one step from commercially available 13C glucose. This one-step protocol uses 2-chloro-1,3-dimethylimidazolinium chloride that serves to selectively activate the anomeric carbon toward substitution reactions. The labeled glucose is then smoothly converted to the anhydroglucose. Purification is efficiently achieved on large scale by chromatography on silica gel.
13C标记的左旋葡萄糖已经合成并纯化,从市售的13C葡萄糖一步合成,产量高,达到克级。这一一步法使用2-氯-1,3-二甲基氯化咪唑啉,用于选择性激活糖苷碳,使其发生取代反应。然后,标记的葡萄糖顺利转化为脱水葡萄糖。通过硅胶色谱法,可以大规模高效地实现纯化。