D-ImpU 在
fluorophosphate triethylammonium salt 、 magnesium chloride 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 5.0h,
以80%的产率得到uridine 5′-(2-fluorodiphosphate) disodium salt
参考文献:
名称:
氟磷酸核苷酸类似物的合成及其表征作为19 F NMR研究的工具
摘要:
为了拓宽基于19 F核苷酸标记的现有方法的范围,我们开发了一种新的合成方法,用于合成在(低聚)磷酸部分末端含有O到F取代的氟磷酸(低聚)核苷酸类似物,并将其评估为用于19 F NMR研究的工具。我们采用了基于磷咪唑化物化学方法的三种有效而全面的合成方法,并以四正丁基氟化铵,氟一磷酸或氟代磷酸咪唑啉作为氟源,我们制备了30多种含氟磷酸盐的核苷酸,其碱基类型不同(A,G,C,U,7米G),磷酸盐链长(从单链到四链)和其他磷酸盐修饰基团(硫代,硼烷,亚氨基,亚甲基)的存在。使用氟代磷酸咪唑啉酯作为5'-磷酸化寡核苷酸的氟代磷酸化试剂,我们还合成了寡核苷酸5'-(2-氟二磷酸酯),其可能可用作19 F NMR杂交探针。化合物经19 F NMR表征,评估为19F NMR分子探针。我们发现氟磷酸核苷酸类似物可用于监测具有各种特异性和金属离子要求的酶的活性,包括人DcpS酶,一种治疗脊髓性肌萎缩的靶标。
A Nucleotide Dimer Synthesis Without Protecting Groups Using Montmorillonite as Catalyst
作者:Prakash C. Joshi、Michael F. Aldersley、Dmitri V. Zagorevskii、James P. Ferris
DOI:10.1080/15257770.2012.701787
日期:2012.7
including heterochiral and chimeric syntheses. This greener chemistry has enabled the synthesis of dimers from activated nucleotides themselves, activated nucleotides with nucleosides, and activated nucleotides with nucleotide 5′-monophosphates. [Supplemental materials are available for this article. Go to the publisher's online edition of Nucleosides, Nucleotides & Nucleic Acids to view the free supplemental
Progress in demonstrating total homochiral selection in montmorillonite-catalyzed RNA synthesis
作者:Prakash C. Joshi、Michael F. Aldersley、James P. Ferris
DOI:10.1016/j.bbrc.2011.09.008
日期:2011.10
The Na(+)-montmorillonite-catalyzed reactions of 5'-phosphorimidazolides of nucleosides generates RNA oligomers. The question arises as to how chiral selectivity was introduced into this biopolymer from a simple chemicalsystem. We have demonstrated homochiral selection in quaternary reactions of a racemic mixture of D,L-ImpA and D,L-ImpU on Na(+)-montmorillonite. The dimer, trimer, tetramer and pentamer
[EN] SYNTHESIS OF 6-AZIDO-6-DEOXY-2-N-ACETYL-HEXOSAMINE-NUCLEOSIDE DIPHOSPHATE<br/>[FR] SYNTHÈSE DE 6-AZIDO-6-DÉSOXY-2-N-ACÉTYL-HEXOSAMINE-NUCLÉOSIDE DIPHOSPHATE
申请人:SYNAFFIX BV
公开号:WO2021015622A1
公开(公告)日:2021-01-28
The current invention concerns methods for the synthesis of 6-azido-6-deoxy-2-N-acetyl-monosaccharide-nucleoside diphosphate, in particular 6-azido-6-deoxy-2-N-acetyl-D- galactosamine-nucleoside diphosphate or 6-azido-6-deoxy-2-N-acetyl-D-glucosamine-nucleoside diphosphate. The synthesis method according to the invention is characterized by being highly efficient and high yielding. Also part of the present invention are key intermediates of this process.
Clay catalyzed RNA synthesis under Martian conditions: Application for Mars return samples
作者:Prakash C. Joshi、Krishna Dubey、Michael F. Aldersley、Meaghen Sausville
DOI:10.1016/j.bbrc.2015.04.044
日期:2015.6
Catalysis by montmorillonites clay minerals is regarded as a feasible mechanism for the abiotic production and polymerization of key biomolecules on early Earth. We have investigated a montmorillonite-catalyzed reaction of the 5'-phosphorimidazolide of nucleosides as a model to probe prebiotic synthesis of RNA-type oligomers. Here we show that this model is specific for the generation of RNA oligomers despite deoxy-mononucleotides adsorbing equally well onto the montmorillonite catalytic surfaces. Optimum catalytic activity was observed over a range of pH (6-9) and salinity (1 +/- 0.2 M NaCl). When the weathering steps of early Earth that generated catalytic montmorillonite were modified to meet Martian soil conditions, the catalytic activity remained intact without altering the surface layer charge. Additionally, the formation of oligomers up to tetramer was detected using as little as 0.1 mg of Na+-montmorillonite, suggesting that the catalytic activity of a Martian clay return sample can be investigated with sub-milligram scale samples. (C) 2015 Elsevier Inc. All rights reserved.
Synthesis of 2'-5' linked oligouridylates in aqueous medium using the Pb2+ ion.
作者:HIROAKI SAWAI、MASAJI OHNO
DOI:10.1248/cpb.29.2237
日期:——
Oligouridylates up to the pentamer were obtained by the polymerization of uridine-5'-phosphorimidazolide in aqueous solution using Pb2+ ion catalyst. The resulting oligouridylates were fully characterized by sequential enzyme and alkaline digestions. The internucleotide linkages of the oligomers were mainly 2'-5'. The yields of the 2'-5'linked dimer, trimer, tetramer and pentamer were 14.2, 6.0, 2.0 and 0.4%, respectively.