Novel Five‐Membered Iminocyclitol Derivatives as Selective and Potent Glycosidase Inhibitors: New Structures for Antivirals and Osteoarthritis

Abstract
A novel 5‐membered iminocyclitol derivative was found to be a potent and selective inhibitor of the glycoprotein‐processing α‐glucosidase with a Ki value of 53 nM. This compound was further derivatized to antiviral agents against Japanese encephalitis virus, dengue virus serotype 2 (DEN‐2), human SARS coronavirus, and human β‐hexosaminidase (Ki=2.6 nM), a new target for the development of osteoarthritis therapeutics.