Imidazole-containing peptide of the formula: ##STR1## wherein R.sup.1 is a branched alkyl group, a branched alkyloxy group or an aryl-substituted lower alkyloxy group, R.sup.2 and R.sup.4 are the same or different and each is hydrogen atom or a lower alkyl group, R.sup.3 and R.sup.5 are a phenyl-substituted lower alkyl group, R.sup.6 is hydrogen atom or a lower alkoxycarbonyl group, R.sup.7 is hydrogen atom or a nitrogen-containing heterocyclic group-substituted lower alkylthio group, X.sup.1 and X.sup.2 are the same or different and each is ##STR2## A is a lower alkylene group which may be substituted with a substituent selected from the group consisting of a lower alkoxy group, hydroxymethyl group and a group of the formula: ##STR3## and R.sup.8 and R.sup.9 are the same or different and each is hydrogen atom or a lower group, or a pharmaceutically acceptable salt thereof, which is useful as an immunomodulator and as an agent for the treatment and/or prophylaxis of autoimmune diseases such as rheumatoid arthritis, multiple sclerosis, systemic lupus erthematodes, glomerulonephris, rhumatic fever or type I diabetes and atopic allergy, a processes for the preparation thereof, and a pharmaceutical composition containing said compound as an active ingredient.
公式为:##
STR1## 其中R.sup.1是支链烷基,支链烷
氧基或芳基取代的低级烷
氧基,R.sup.2和R.sup.4相同或不同,都是
氢原子或低级烷基,R.sup.3和R.sup.5是
苯基取代的低级烷基,R.sup.6是
氢原子或低级烷
氧羰基基团,R.sup.7是
氢原子或含
氮杂环基取代的低级烷
硫基团,X.sup.1和X.sup.2相同或不同,都是##
STR2## A是低级烷基,可以用以下基团之一取代:低级烷
氧基,
羟甲基基团和式为:##
STR3## R.sup.8和R.sup.9相同或不同,都是
氢原子或低级基团,或其药学上可接受的盐,它可用作免疫调节剂和用于治疗和/或预防自身免疫性疾病,如类风湿性关节炎,多发性硬化症,系统性红斑狼疮,肾小球肾炎,风湿热或1型糖尿病和过敏症的药物,其制备过程以及含有该化合物作为活性成分的制药组合物。