SYNTHESIS OF NOVELD- ANDL-3′-DEOXY-3′-C-HYDROXYMETHYL NUCLEOSIDE WITH EXOCYCLIC METHYLENE AS POTENTIAL RIBONUCLEOTIDE REDUCTASE INHIBITOR
摘要:
D- and L-3'-Deoxy-3'-C-hydroxymethyl thymidine substituted with exocyclic methylene at 2'-position were synthesized, starting from D- and L-xylose as potential ribonucleotide reductase inhibitor, respectively, but they were found to be inactive against several tumor cell lines.
derivative of 3′-amino-3′-deoxyadenosine, is one of the most important examples. Some azidosugar nucleosides, the synthetic precursors of the corresponding aminosugar compounds, are known to be active againstHIV reverse transcriptase. We are interested in comparing the bioactivity of D- and L-enantiomers of such nucleosides. Here, the synthesis of both D- and L-enantiomers of 3′-azido- and 3′-amino-3′-deoxyadeonsine
3,5-Di(trifluoromethyl)phenyl(cyano)iodonium triflate is described as an accessible, stable, and powerful thiophile that can activate batches of p-tolyl thioglycoside donors at room temperature. Various alcoholic acceptors were efficiently glycosylated, providing the desired glycosides. The novel activation protocol features mild conditions as well as high compatibility with some classic strategies