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- W3116255514 abstract "Reaction of 6-amino-2-methylthio-3-methyluracil with ethyl ethoxymethyleneoxaloacetate or methyl(Z)-2-acetylamino-3-dimethylaminopropenoates afforded diethyl 2-(1,6-dihydro-1-methyl-2-(methylthio)-6-oxopyrimidin-4-yl-amino)methylene malonate or (2E)-methyl 3-(1,6-dihydro-1-methyl-2-(methylthio)-6-oxopyrimidin-4-yl-amino)-2-acetamidoacrylate, respectively. Cyclization of each of the latter products by sodium ethoxide afforded new pyrido [2,3-d]pyrimidines, which were ribosylated with 1-O-acetyl-2,3,5-O-benzoyl-β-D-ribofuranose by the silylation method yielded the protected nucleosides. The protected nucleosides were debenzoylated by sodium methoxide to afford novel pyrido[2,3-d]pyrimidine nucleosides. The structural assignmentsv for the new compounds were based on their elemental analysis and spectroscopic data." @default.
- W3116255514 created "2021-01-05" @default.
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- W3116255514 date "2020-12-30" @default.
- W3116255514 modified "2023-09-27" @default.
- W3116255514 title "Nucleosides 11: synthesis of new derivatives of pyrido[2,3-d]pyrimidines and their nucleosides" @default.
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- W3116255514 doi "https://doi.org/10.1080/15257770.2020.1862869" @default.
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