The invention relates to triazole compounds of formula I and I' or pharmaceutically acceptable salts thereof, useful as modulators of demyelinating diseases:The invention also provides pharmaceutically acceptable compositions comprising the compounds of the invention, methods of using the compositions and kits thereof in the treatment of various demyelinating and neurodegenerative diseases, including multiple sclerosis.本發明係關於式I及I’之三唑化合物或其醫藥上可接受之鹽,其用作脫髓鞘疾病之調節劑:本發明亦提供包含本發明化合物之醫藥上可接受之組合物、使用該等組合物之方法及其套組,其用於治療各種脫髓鞘及神經退化疾病(包括多發性硬化)。