Chong Kun Dang Pharmaceutical Corp. has disclosed 1,3,4-oxadiazole-containing compounds acting as histone deacetylase 6 (HDAC6) inhibitors reported to be useful for the treatment of prion diseases, asthma, psoriasis, inflammatory bowel disease, autosomal dominant polycystic kidney, stroke, Charcot-Marie-Tooth disease and uveitis, among others.