22596-06-1Relevant articles and documents
Utilization method of waste alpha-1,2,3,5-tetra-O-acetyl-D-ribose in ribose crystalline residual liquid
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Paragraph 0054-0056; 0060; 0064; 0068; 0072; 0076; 0086, (2017/05/27)
The invention relates to a method for utilizing waste in ribose crystalline residual liquid. The method comprises the steps that crystalline residual liquid obtained after nucleoside pyrolysis serves as a raw material, an organic layer is extracted, an organic solvent is vaporized and eliminated, mixing is conducted with benzotriazole, under the action of a catalyst, on the condition that the temperature ranges from 100 DEG C to 160 DEG C, a condensation reaction is conducted for 0.33-5.0 h, after the reaction is completed, ethyl acetate is added for dissolving, washing is conducted with water, the solvent is dried out, recrystallization is conducted with diethyl ether, an intermediate product 1-(2,3,5-tri-O-acetyl-beta-D-furanribosyl)benzotriazole is obtained, under the faction of an aminomethanol solution or a sodium methylate methanol solution, acetyl is removed at room temperature, and 1-(2,3,5-tri-hydroxyl-beta-D-furanribosyl)benzotriazole is obtained. The method has the prominent advantages the waste is turned into wealth, at the same time of reducing beta-tetra-O-acetyl-D-ribose crystalline residual liquid, the original waste alpha-tetra-O-acetyl-D-ribose is utilized, and the method has the obvious implement value and social and economic benefits.
Enzymatic ADP-ribosylation of Benzotriazoles and Related Triazoles. Difference of Glycosidation Site between Triazoles and Indazoles
Tono-oka, Shuichi,Azuma, Ichiro
, p. 339 - 343 (2007/10/02)
Some benzotriazoles and related triazole were ADP-ribosylated in the presence of NAD and NAD-nucleosidase to give corresponding dinucleotides.The site of ribosylation for these dinucleotides was found exclusively to be N-1 on the basis of their uv and 15N-nmr spectra, contrasting with N-2 for indazole dinucleotides.The origin of this difference in regiochemical specificity between the triazole and diazole systems is discussed.