Novel glucosamine-peptide derivatives of the formula:
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' 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 orvia an oxygen atom;
provided that when R' is hydrogen m is l;
R1 is hydrogen or lower alkyl which may form a ring by connecting its terminal with the a-nitrogen atom when n is 0, or hydrogen when n is an integer of 1 to 9;
R is hydrogen or lower alkyl;
R4 and R' are each hydrogen or lower alkyl which may be substituted with hydroxyl or benzyloxyl;
R" is hydrogen or lower alkyl;
R7 is alkyl which may be substituted with lower alkoxyl or aralkyl;
R8 and R9 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.
式中的新型
氨基葡萄糖肽衍
生物:
式中
m 为 0 或 1
n 是 0 或 1 至 9 的整数;
R 是可被羟基取代的低级烷基或芳基;
R'是氢或具有
无环烃基的酰基,其末端可直接、通过羰基或通过氧原子被
环烃基取代;
但当 R' 为氢时,m 为 l;
R1 是氢或低级烷基,当 n 为 0 时,可通过连接其末端与 a-氮原子形成环;当 n 为 1 至 9 的整数时,则为氢;
R 是氢或低级烷基;
R4 和 R' 均为氢或低级烷基,可被羟基或苄氧基取代;
R" 是氢或低级烷基;
R7 是可被低级烷氧基或芳烷基取代的烷基;
R8和R9各自为氢、低级烷基或芳烷基;以及(D)和(L)各自表示其各自碳原子不对称时的构型;
或其酸加成盐具有免疫刺激活性。