Stereoselective gold(I)-catalyzed approach to the synthesis of complex α-glycosyl phosphosaccharides.

Stereoselective gold(I)-catalyzed approach to the synthesis of complex α-glycosyl phosphosaccharides.
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立体选择性金催化合成配合α-糖基磷酸的方法。

DOI:
10.1038/s41467-022-28025-0
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发表时间:
2022-01-20
影响因子:
16.6
通讯作者:
Zhu Y
Zhu Y
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Zhang X;Yang Y;Ding J;Zhao Y;Zhang H;Zhu Y

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糖基磷酸酯是一个重要的复杂聚糖家族。由于这些复杂分子的独特性质,仍然需要获得糖基磷酸化酶的有效方法。在这里,我们公开了一种高效和立体选择性的方法来合成生物学上重要的和复杂的α-糖基磷酸,采用直接金(I)催化的弱亲核磷酸受体的糖基化。在这项工作中,用超过45个实例证明了广泛的底物范围,包括葡萄糖、木糖、葡萄糖醛酸、半乳糖、甘露糖、鼠李糖、岩藻糖、2-N3 -2-脱氧甘露糖、2-N3-2-脱氧葡萄糖、2-N3-2-脱氧半乳糖和非天然碳水化合物。在这里,我们表明本文制备的糖基磷酸三酯成功地应用于从杜氏利什曼原虫一锅合成磷酸糖,并且实现了通过迭代延伸策略从荚膜汉逊酵母有效制备磷酸糖片段的二磷酸三糖。糖基磷酸酯是一个重要的复杂聚糖家族,但很难有效合成。在这里,作者公开了一种立体选择性方法,通过金(I)催化的磷酸受体糖基化来制备α-糖基磷酸。
Glycosyl phosphosaccharides represent a large and important family of complex glycans. Due to the distinct nature of these complex molecules, efficient approaches to access glycosyl phosphosaccharides are still in great demand. Here, we disclose a highly efficient and stereoselective approach to the synthesis of biologically important and complex α-glycosyl phosphosaccharides, employing direct gold(I)-catalyzed glycosylation of the weakly nucleophilic phosphoric acid acceptors. In this work, the broad substrate scope is demonstrated with more than 45 examples, including glucose, xylose, glucuronate, galactose, mannose, rhamnose, fucose, 2-N3-2-deoxymannose, 2-N3-2-deoxyglucose, 2-N3-2-deoxygalactose and unnatural carbohydrates. Here, we show the glycosyl phosphotriester prepared herein was successfully applied to the one-pot synthesis of a phosphosaccharide from Leishmania donovani, and an effective preparation of a trisaccharide diphosphate of phosphosaccharide fragments from Hansenula capsulate via iterative elongation strategy is realized. Glycosyl phosphosaccharides represent a large and important family of complex glycans, but are difficult to synthesize efficiently. Here, the authors disclose a stereoselective methodology to make α-glycosyl phosphosaccharides, via gold(I)-catalyzed glycosylation of phosphoric acid acceptors.
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