Compounds, tautomers and pharmaceutically acceptable salts of the compounds are disclosed, wherein the compounds have the structure of Formula Ia,
as defined in the specification. Corresponding pharmaceutical compositions, methods of treatment, methods of synthesis, and intermediates are also disclosed.
Highly stereoselective synthesis of novel cyclobutane-fused azanucleosides
作者:Ramon Flores、Ramon Alibés、Marta Figueredo、Josep Font
DOI:10.1016/j.tet.2009.06.067
日期:2009.8
Stereoselective syntheses of several 3-azabicyclo[3.2.0]heptane nucleoside analogues have been efficiently completed starting from a homochiral a,b-unsaturated-g-lactam. The target compounds were prepared by condensation of a common bicyclic acetate intermediate with pyrimidine and purine bases under modified Vorbrüggen conditions. The anti-HIV activity of the newly synthesized azanucleosides has been