A simple treatment of fully aroylated purine and pyrimidine ribo-nucleosides with pulverized potassium tert-butoxide in tetrahydrofuran (THF) or dichloromethane under a controlled condition gave a mixture of the corresponding di-O-aroyl derivatives in which 2'-OH derivatives are preponderant over 3'-OH derivatives; 3',5'-di-O-benzoyluridine, N4, 3', 5'-tribenzoylcytidine, N4, 3', 5'-tri-o-toluoylcytidine
A Practical Synthesis of 2-chloro-2′-deoxyadenosine (Cladribine) from 2′-deoxyadenosine
作者:Yao Peng
DOI:10.3184/174751913x13618878756705
日期:2013.4
A practical synthesis of 2-chloro-2′-deoxyadenosine (Cladribine) from 2′-deoxyadenosine is reported. Treatment of fully protected 2′-deoxyadenosine with 2,2,2-trifluoroacetic anhydride and tetrabutylammonium nitrate gave protected 2-nitro-2′-deoxyadenosine with high yield. 2-Chloro-2′-deoxyadenosine was synthesised in four steps and 44.8% yield after substitution by chloride and deprotection steps
Synthesis of 2′-deoxyguanosine from 2′-deoxyadenosine <i>via</i> C2 nitration
作者:Ran Xia、Lei-Shan Chen、Shao-Hong Xu、Chao Xia、Li-Ping Sun
DOI:10.1080/15257770.2022.2055060
日期:2022.7.3
Abstract An efficient synthetic method has been developed for the synthesis of 2′-deoxyguanosine from the more commercially available 2′-deoxyadenosine via late-stage C2 nitration in 48.7% total yield by a 5-step synthetic procedure. Crucially, 2′-deoxyadenosine was fully protected by bennzoyl groups and then nitrated at C2 by tetrabutylammonium nitrate/trifluoroacetic anhydride. The resulting 2-NO2