A solid-supported acidic oxazolium perchlorate as an easy-handling catalyst for the synthesis of modified pyrimidine nucleosides via Vorbrüggen-type N -glycosylation
作者:Nabamita Basu、Kin-ichi Oyama、Masaki Tsukamoto
DOI:10.1016/j.tetlet.2017.03.046
日期:2017.5
A solid-supported acidic oxazolium perchlorate was investigated as a heterogeneous catalyst in N-glycosylation reactions using silylated modified pyrimidines and an acylated ribose or glucose to afford the corresponding pyrimidine nucleosides. This salt is a nonhygroscopic and stable powder whose activity is comparable to that of 2-methyl-5-phenylbenzoxazolium perchlorate. A reaction with this polymer
Catalyst-free and visible light promoted trifluoromethylation and perfluoroalkylation of uracils and cytosines
作者:Yang Huang、Yun-Yun Lei、Liang Zhao、Jiwei Gu、Qiuli Yao、Ze Wang、Xiao-Fei Li、Xingang Zhang、Chun-Yang He
DOI:10.1039/c8cc07759b
日期:——
perfluoroalkyl motifs in the core structure, access to such analogues typically requires multi-step synthesis. Here, we report a mild, metal-free and operationally simple strategy for the direct perfluoroalkylation of uracils, cytosines and pyridinones through a visible-light induced pathway from perfluoroalkyl iodides. This photochemical transformation features synthetic simplicity, mild reaction
Nucleobase Having Perfluoroalkyl Group and Process for Producing the Same
申请人:Yamakawa Tetsu
公开号:US20090124796A1
公开(公告)日:2009-05-14
Provided is a simple and efficient production process of a nucleobase having a perfluoroalkyl group.
A nucleobase (for example, uracils, cytosines, adenines, guanines, hypoxanthines, xanthines, or the like) is reacted with a perfluoroalkyl halide in the presence of a sulfoxide, a peroxide and an iron compound to produce a perfluoroalkyl-substituted nucleobase, which is useful as an intermediate for medical drugs, economically.