“…These processes cause from major global health problems, for instance diabetes or cystic fibrosis, to highly disabling rare syndromes such as the lysosomal storage disorders Gaucher, Pompe, G M1 -gangliosidosis, and Fabry diseases. − Disrupting the activity of carbohydrate-processing enzymes in pathogens can be further exploited in fighting infectious diseases: e.g., viral infections. , Innate immune response signaling routes, , cell proliferation and metastasis, or age-related neurodegenerative disorders, e.g. Alzheimer and Parkinson diseases, , can also be targeted with iminosugars. The recent reports on the promise of the piperidine- and indolizidine-type iminosugars 1-deoxynojirimycin (DNJ; 1 ) and castanospermine (CS; 2 ), respectively, and some of their derivatives for treating patients infected with SARS-CoV-2, the causative agent of the Covid-19 worldwide pandemic, attest to the unrelenting interest in the therapeutic potential of this amazing family of glycomimetics (Figure ).…”