Novel glucosamine-peptide derivatives of the formula: ##STR1## wherein m is 0 or 1; n is 0 or an integer of 1 to 9; R is lower alkyl which may be substituted with hydroxyl, or aryl; R.sup.1 is hydrogen or acyl having an acyclic hydrocarbon group, the terminal of which may be substituted with a cyclic hydrocarbon group directly, via a carbonyl group or via an oxygen atom; provided that when R.sup.1 is hydrogen m is 1; R.sup.2 is hydrogen or lower alkyl which may form a ring by connecting its terminal with the .alpha.-nitrogen atom when n is 0, or hydrogen when n is an integer of 1 to 9; R.sup.3 is hydrogen or lower alkyl; R.sup.4 and R.sup.5 are each hydrogen or lower alkyl which may be substituted with hydroxyl or benzyloxyl; R.sup.6 is hydrogen or lower alkyl; R.sup.7 is alkyl which may be substituted with lower alkoxyl or aralkyl; R.sup.8 and R.sup.9 are each hydrogen, lower alkyl or aralkyl; and (D) and (L) each indicate configurations if their respective carbon atoms are asymmetric; or an acid addition salt thereof, have immunostimulatory activity.
化合物的结构式为:##STR1## 其中,m为0或1;n为0或1至9的整数;R为低碳基,可能被羟基或芳基取代;R.sup.1为氢或酰基,具有无环碳氢基团,其末端可能通过羰基团或氧原子直接或间接与
环烃基团取代;但当R.sup.1为氢时,m为1;R.sup.2为氢或低碳基,当n为0时,其末端可能通过与α-氮原子连接形成环;当n为1至9的整数时,R.sup.2为氢;R.sup.3为氢或低碳基;R.sup.4和R.sup.5均为氢或低碳基,可能被羟基或苄氧基取代;R.sup.6为氢或低碳基;R.sup.7为碳基,可能被低碳基氧基或苄基取代;R.sup.8和R.sup.9均为氢、低碳基或苄基;(D)和(L)分别表示它们各自的碳原子对称构型;或其酸加成盐具有免疫刺激活性。