Allscher Thorsten, Klüfers Peter, Labisch Oliver
Department of Chemistry and Biochemistry, Ludwig Maximilian University Munich, Butenandtstr. 5-13, D-81377 Munich, Germany.
Carbohydr Res. 2007 Aug 13;342(11):1419-26. doi: 10.1016/j.carres.2007.04.025. Epub 2007 May 5.
In this work, we present novel complexes of hydroxyaldehydes and ketones with palladium(II). The compounds are studied by two-dimensional NMR spectroscopy in solution (COSY, HMQC, HMBC). Glycolaldehyde, d-glyceraldehyde, glyoxal and 2,4-O-ethylidene-d-erythrose were used as aldehydes, d-erythrulose was used as an alpha-hydroxyketone. Although different species are present in solution, only the hydrated forms of the aldehydes can coordinate to the metal centre. These complexes are stable at 4 degrees C in aqueous solution. The crystal structure of a complex formed by mesoxalic acid and palladium(II) is reported and shows coordination by both hydroxy groups of the hydrated ketone.
在本研究中，我们展示了羟基醛和酮与钯（II）形成的新型配合物。通过二维核磁共振光谱（COSY、HMQC、HMBC）对这些化合物在溶液中进行了研究。使用乙醇醛、d-甘油醛、乙二醛和2,4-O-亚乙基-d-赤藓糖作为醛，d-赤藓酮作为α-羟基酮。尽管溶液中存在不同的物种，但只有醛的水合形式能够与金属中心配位。这些配合物在4℃的水溶液中是稳定的。报道了由内消旋酒石酸和钯（II）形成的配合物的晶体结构，该结构显示水合酮的两个羟基均参与了配位。
