Syntheses of 2-Keto-3-deoxy-<scp>D</scp>-xylonate and 2-Keto-3-deoxy-<scp>L</scp>-arabinonate as Stereochemical Probes for Demonstrating the Metabolic Promiscuity of<i>Sulfolobus solfataricus</i>Towards<scp>D</scp>-Xylose and<scp>L</scp>-Arabinose
作者:Robert M. Archer、Sylvain F. Royer、William Mahy、Caroline L. Winn、Michael J. Danson、Steven D. Bull
DOI:10.1002/chem.201203489
日期:2013.2.18
conate aldolase from the archaeon Sulfolobus solfataricus demonstrates good activity for catalysis of the retro‐aldol cleavage of both these enantiomers to afford pyruvate and glycolaldehyde. The stereochemical promiscuity of this aldolase towards these enantiomeric aldol substrates confirms that this organism employs a metabolically promiscuous pathway to catabolise the C5‐sugars D‐xylose and L‐arabinose
2-酮基-3-脱氧的实用合成d -xylonate(d -KDX)和2-酮基-3-脱氧大号-arabinonate(大号-KDA)依赖于2-的阴离子的反应- [(叔已开发出-丁基二甲基甲硅烷基)氧基]-2-(二甲氧基磷酰基)乙酸酯与对映纯甘油醛丙酮化物,然后对所得O-甲硅烷基-烯醇酯进行全局脱保护。这使我们能够确认来自古生菌Sulfolobus solfataricus的 2-酮-3-脱氧-D-葡萄糖酸醛缩酶表现出良好的催化活性,可以催化这两种对映异构体的逆羟醛裂解得到丙酮酸和乙醇醛。这种醛缩酶对这些对映异构醛醇底物的立体化学混杂性证实了该生物体采用代谢混杂的途径来分解代谢 C5-糖D-木糖和L-阿拉伯糖。