A prebiotically plausible synthesis of pyrimidine β-ribonucleosides and their phosphate derivatives involving photoanomerization
作者:Jianfeng Xu、Maria Tsanakopoulou、Christopher J. Magnani、Rafał Szabla、Judit E. Šponer、Jiří Šponer、Robert W. Góra、John D. Sutherland
DOI:10.1038/nchem.2664
日期:2017.4
irradiation is extremely inefficient. Our previous work demonstrated the synthesis of pyrimidine β-ribonucleotides, but at the cost of ignoring ribose aminooxazoline, using arabinose aminooxazoline instead. Here we describe a long-sought route through ribose aminooxazoline to the pyrimidine β-ribonucleosides and their phosphatederivatives that involves an extraordinarily efficient photoanomerization of
A new and potentially prebiotic α-cytidine derivative
作者:Maria Tsanakopoulou、Jianfeng Xu、Andrew D. Bond、John D. Sutherland
DOI:10.1039/c7cc00693d
日期:——
A new α-cytidine derivative was synthesised from the prebiotic reaction of ribose aminooxazoline and dicyanoacetylene. The tetracyclic structure of the product was confirmed by X-ray diffraction and then an alternative 6-step synthetic pathway to the product was found which was suitable for large-scale synthesis.
由核糖氨基恶唑啉和二氰基乙炔的益生元反应合成了一种新的α-胞苷衍生物。通过 X 射线衍射证实了产物的四环结构,然后找到了适合大规模合成的替代 6 步合成途径。
Process for anomerizing nucleosides
申请人:Eli Lilly and Company
公开号:US05420266A1
公开(公告)日:1995-05-30
A process for increasing the amount of a desired anomer nucleoside from an undesired anomeric nucleoside mixture thereof by contacting the mixture with a hydroxide base in an organic solvent.
一种通过在有机溶剂中与氢氧化物碱接触混合物,从不需要的异构核苷混合物中增加所需异构核苷数量的过程。
Auto Machine Learning Assisted Preparation of Carboxylic Acid by<scp>TEMPO‐Catalyzed</scp>Primary Alcohol Oxidation
experimentation (HTE). With the HTE data and 105 descriptors, a multi-label prediction was performed with AutoGluon (an open-source auto machinelearning framework) and KNIME (an open-source data analytics platform). For the independent test of 240 reactions (a full matrix of 20 unseen alcohols and 12 conditions), AutoGluon with multi-label prediction for yieldprediction (AGMP) gave excellent performance