As for this invention, the below-mentioned general formula (1 ) [In formula, R shows the arudopiranosu residue, R2 the carbon count shows the hydrocarbon radical of 2 which is possible to have possessed the substituent - 18, R3 shows the acyl basis, X shows oxygen atom, sulfur atom or -nh-, p shows integer 0 - 4. ] With the chemical compound which is displayed regards that salt. The chemical compound of this invention has had unique immunity adjustment talent, it is useful in prevention remedy of the autoimmune disease and the like.本発明は、下記一般式(1’)[式中、Rはアルドピラノース残基を示し、R2は置換基を有していてもよい炭素数2~18の炭化水素基を示し、R3はアシル基を示し、Xは酸素原子、硫黄原子又は-NH-を示し、pは0~4の整数を示す。]で表される化合物はその塩に関する。本発明の化合物は、特異的な免疫調節能を有しており、自己免疫疾患等の予防・治療に有用である。
