| abstract |
A phytosphingosine derivative of chemical formula IA or IB, and a composition comprising the phytosphingosine derivative for preventing and treating inflammatory skin diseases, autoimmune diseases, and hyperkeratotic diseases. The phytosphingosine derivatives of the present disclosure are involved with transcription factors related to inflammation, autoimmune diseases and hyperkeratotic diseases, the expression and the generation of inflammatory mediators, signal transduction mechanisms, and the expression and the activity of relevant enzymes and the like. |