Saturated azaheterocycles are popular in modern drug discovery programs. More than 50 FDA-approved drugs containing a fragment of pyrrolidine and piperidine have appeared on the market. Pyrrolidine/piperidine-based azasugars and their analogues are potent glycosidase inhibitors. These unique molecules promise a new generation of iminosugar-based medicines for a wide range of diseases. For example, a bioactive azasugar includes the anti-diabetic drug Glyset. In this context, at Enamine have been designed and synthesized a library of sugar-like derivatives for drug design. The description and list of more than 50 unique sugar-like derivatives can be found at MedChem Highlights section of Enamine’s website.