51255-17-5Relevant articles and documents
Iron-Catalyzed Radical Cleavage/C?C Bond Formation of Acetal-Derived Alkylsilyl Peroxides
Shiozaki, Yoko,Sakurai, Shunya,Sakamoto, Ryu,Matsumoto, Akira,Maruoka, Keiji
supporting information, p. 573 - 576 (2020/02/20)
A novel radical-based approach for the iron-catalyzed selective cleavage of acetal-derived alkylsilyl peroxides, followed by the formation of a carbon–carbon bond is reported. The reaction proceeds under mild reaction conditions and exhibits a broad substrate scope with respect to the acetal moiety and the carbon electrophile. Mechanistic studies suggest that the present reaction proceeds through a free-radical process involving carbon radicals generated by the homolytic cleavage of a carbon–carbon bond within the acetal moiety. A synthetic application of this method to sugar-derived alkylsilyl peroxides is also described.
Purification method of decitabine intermediate
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Paragraph 0038; 0039, (2020/07/24)
The invention belongs to the technical field of medicinal chemistry, and particularly relates to a purification method of a decitabine intermediate. The method comprises the following steps: dissolving a decitabine intermediate crude product in a first solvent such as trichloromethane, and adding a second solvent such as methyl tert-butyl ether, so that impurities generated in the synthesis process can be effectively removed, and the proportion of beta-configuration products can be increased when the refined intermediate is subjected to a glycosylation reaction.
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