60134-26-1Relevant articles and documents
2-deoxy-D-ribose derivative
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Paragraph 0048-0050; 0055-0057, (2020/08/09)
The invention belongs to the field of medicine synthesis, and provides a 2-deoxy-D-ribose derivative (III). When the derivative (III) is used for preparing decitabine, the stereoselectivity is good, and the yield is high. The invention provides a preparation method of the derivative. The preparation method comprises the following steps: step a, carrying out oxygen methylation on 1-position hydroxyl of 2-deoxy-D-ribose; and step b, protecting hydroxyl groups at positions 3 and 5, and further carrying out sulfonation on 1-position oxymethyl. The method is simple and convenient to operate, free of special equipment, good in product purity, high in yield and suitable for industrial production.
The development of β-selective glycosylation reactions with benzyl substituted 2-deoxy-1,4-dithio-D-erythro-pentofuranosides: enabling practical multi-gram syntheses of 4'-Thio-2'-deoxycytidine (T-dCyd) and 5-aza-4’-thio-2’-deoxycytidine (aza-T-dCyd) to s
Wishka, Donn G.,Lopez, Omar D.,Rudchenko, Vladimir F.,Huang, Guangfei,Bahde, Robert,Kumar, Vineet,Denysenko, Sergiy M.,Zhang, Lianhao,Zhang, Mianji,Teicher, Beverly A.,Morris, Joel
, p. 68 - 95 (2020/10/21)
The lack of effective methods to perform direct β-selective glycosylation reactions with 2-deoxy-1,4-dithio-D-erythro-pentofuranosides has long been a significant stumbling block for the multi-gram synthesis of 4’-thio-2’-deoxy nucleosides. In addition, p
Synthesis method of desicitabine intermediate alpha-substituted deoxyribose
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Paragraph 0037-0039; 0044-0046; 0051-0053, (2019/08/07)
The invention provides a synthesis method of desicitabine intermediate alpha-substituted deoxyribose. The synthesis route is as follows: R refers to p-methyl benzoyl and X refers to chlorine atomin according to the formula 3 and the formula I. The synthesis method includes the following steps: 1) methylation reaction: a compound of formula 1 is reacted with methyl alcohol under acid catalysis to obtain a compound of the formula 2; 2) acylation reaction: the compound of the formula 2 is dissolved in an organic solvent and reacted with p-methyl benzoyl chloride under alkali catalysis to obtain acompound of the formula 3; 3) chlorination reaction: acetyl chloride is used to adjust the pH value of the acylation reaction solution at low temperature, the acylation reaction solution is filtered,is added with a low polar solvent A, and then is added with acetic acid solution of hydrogen chloride to react to obtain a compound of formula I. The synthesis method uses p-methyl benzoyl as a protective group in the process of synthesizing dicitabine key intermediate to substitute for deoxyribose, and controls the chlorination reaction conditions to obtain high purity alpha-substituted deoxyribose, the high purity alpha-substituted deoxyribose is conducive to coupling with silylation-protected 5-azacytidine to obtain high proportion of beta / alpha, and the dicitabine yield rate is increased.