Catalyst-controlled regioselective reactions of carbohydrate derivatives.- Site-selective conjugate addition through catalytic generation of ion-pairing intermediates.- Ligand-Controlled Site-Selective Cross-Coupling.- Site-Selective C-H Functionalization of Alcohols via Chemoselective Dehydrogenation.- Site-selective peptide/protein degradation.- Site-selective Functionalization of Carbohydrates.- Site-Selective Alterations of Complex Molecules with Peptide-Based Catalysts.