exo-Imino to endo-Iminocyclitol Rearrangement. A General Route to Five-Membered Antiviral Azasugars
摘要:
A facile synthesis is reported for five-membered iminocyclitols which allows for variation in stereochemistry at all the chiral centers, diverse C-1- and N-substitution, and the potential for a three-component combinatorial process. The key step is inversion at the C-4 stereocenter (L-lyxo sugar -> D-ribono azasugar). The exo-imino to endo-iminocyclitol process was extended to the D-lyxo and the D- and L-hexose series. Some analogues were found to be more potent than N-butyl DNJ and N-nonyl DNJ in antiviral activity.
exo-Imino to endo-Iminocyclitol Rearrangement. A General Route to Five-Membered Antiviral Azasugars
摘要:
A facile synthesis is reported for five-membered iminocyclitols which allows for variation in stereochemistry at all the chiral centers, diverse C-1- and N-substitution, and the potential for a three-component combinatorial process. The key step is inversion at the C-4 stereocenter (L-lyxo sugar -> D-ribono azasugar). The exo-imino to endo-iminocyclitol process was extended to the D-lyxo and the D- and L-hexose series. Some analogues were found to be more potent than N-butyl DNJ and N-nonyl DNJ in antiviral activity.