N-acylpeptides are disclosed of the formula: ##STR1## wherein R.sup.1 is alkanoyloxy or alkenoyloxy; R.sup.2 is alkyl or alkenyl; R.sup.3 and R.sup.4 are each lower alkyl, hydroxy(lower)alkyl, ar(lower)alkyl, esterified carboxy(lower)alkyl, carboxy(lower)alkyl, protected amino(lower)alkyl or amino(lower)alkyl; R.sup.5 is hydrogen, hydroxy(lower)alkyl, protected amino(lower)alkyl, amino(lower)alkyl, carboxy(lower)alkyl or esterified carboxy(lower)alkyl; R.sup.6 is carboxy, esterified carboxy or sulfo(lower)alkyl; A.sup.1, A.sup.2 and A.sup.3 are each bond or lower alkylene; and m and n are each an integer of 0 or 1; or its pharmaceutically acceptable salt. These compounds have anti-complementary activity and fibrinolytic activity, and are useful as therapeutic agents for immune-complex diseases or autoimmune diseases such as nephritis, rheumatic diseases, systemic lupus erythematosus, etc. and thrombosis such as cerebral apoplexy, coronary insufficiency, pulmonary embolism, etc.
N-酰肽的
化学式为:##STR1## 其中R.sup.1为烷酰氧基或烯酰氧基;R.sup.2为烷基或烯基;R.sup.3和R.sup.4分别为较低烷基、羟基(较低)烷基、芳基(较低)烷基、酯化羧基(较低)烷基、羧基(较低)烷基、保护
氨基(较低)烷基或
氨基(较低)烷基;R.sup.5为氢、羟基(较低)烷基、保护
氨基(较低)烷基、
氨基(较低)烷基、羧基(较低)烷基或酯化羧基(较低)烷基;R.sup.6为羧基、酯化羧基或
磺酸(较低)烷基;A.sup.1、A.sup.2和A.sup.3分别为键或较低烷基;m和n分别为0或1的整数;或其药学上可接受的盐。这些化合物具有抗补体活性和纤溶活性,并可用作治疗免疫复合物疾病或自身免疫疾病,如肾炎、风湿病、系统性红斑狼疮等,以及脑卒中、冠状动脉不足、肺栓塞等血栓症的治疗药物。