An efficient procedure for the synthesis of caffeoyl- and galloyl-containing β-diketoacid derivatives linked by arylamide was reported by, in the key step, dissolving the corresponding phenyl methyl ketone in THF/DME...An efficient procedure for the synthesis of caffeoyl- and galloyl-containing β-diketoacid derivatives linked by arylamide was reported by, in the key step, dissolving the corresponding phenyl methyl ketone in THF/DME in the presence of NaOMe as base and dimethyl oxalate as oxalylation reagent, and then separating the sodium ketoenolate ester. The resulting β-diketoacids underwent further condensation reaction with o-phenylenediamine to generate quinoxalone derivatives in good yield, rather than 2-benzimidazol. The preliminary ion binding properties of quinoxalone derivatives were also investigated. UV-Vis spectra showed that these compounds could selectively recognize Cu^2 ＋ ion in ethanol and form a 1 ： 2 complex.展开更多
Three dinucleotides containing L-isonucleosides at 5＇-end were synthesized by an elegant phosphoramidite one-pot method. Their binding modes with HIV integrase were simulated and their anti-HIV activities in pseudoty...Three dinucleotides containing L-isonucleosides at 5＇-end were synthesized by an elegant phosphoramidite one-pot method. Their binding modes with HIV integrase were simulated and their anti-HIV activities in pseudotyped virus system were examined.展开更多
基金Project supported by the National Natural Science Foundation of China （No. 20402001）, the Special Foundation for Beijing Municipal （No. 2004D0501520 and Beijing Novel Project （No. 2005B 10）.
文摘An efficient procedure for the synthesis of caffeoyl- and galloyl-containing β-diketoacid derivatives linked by arylamide was reported by, in the key step, dissolving the corresponding phenyl methyl ketone in THF/DME in the presence of NaOMe as base and dimethyl oxalate as oxalylation reagent, and then separating the sodium ketoenolate ester. The resulting β-diketoacids underwent further condensation reaction with o-phenylenediamine to generate quinoxalone derivatives in good yield, rather than 2-benzimidazol. The preliminary ion binding properties of quinoxalone derivatives were also investigated. UV-Vis spectra showed that these compounds could selectively recognize Cu^2 ＋ ion in ethanol and form a 1 ： 2 complex.
基金National Natural Science Foundation of China (Grant No. 20832008 and 21002004)
文摘Three dinucleotides containing L-isonucleosides at 5＇-end were synthesized by an elegant phosphoramidite one-pot method. Their binding modes with HIV integrase were simulated and their anti-HIV activities in pseudotyped virus system were examined.
