Muramyl peptide derivatives having the formula (I)
wherein R₃ is a long chain acyloxyacyl group, R₁ is hydrogen or hydroxy mercapto, acyloxy or acylthio group, R₂ is hydrogen or alkyl group and R₄ is acyl, which are useful as immunomodulators.
具有式(I)的
氨甲酰肽衍
生物
其中 R₃ 是长链酰氧基乙酰基,R₁ 是氢或羟基巯基、酰氧基或酰
硫基,R₂ 是氢或烷基,R₄ 是酰基,可用作免疫调节剂。