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聚精寡肽类似物的构效关系

顾鸣镝, 彭师奇*, 郭雪清, 蒋秀荣, 蔡孟深, 董淑云, 张力, 张越, 唐朝枢   

  1. 1. 北京医科大学天然药物与仿生药物国家重点实验室 北京100083;
    2. 北京医科大学心肺内分泌研究室 北京100083
  • 收稿日期:1992-04-24 修回日期:1992-09-02 出版日期:1992-12-15 发布日期:1992-12-15
  • 通讯作者: 彭师奇*

Structure-activity Relationships of Vasorelaxing Effect of Polyarginine Oligopeptides

Ming-Di Gu, Shi-Qi Peng*, Xue-Qing Guo, Xiu-Rong Jiang, Meng-Shen Cai, Shu-Yun Dong, Li Zhang, Yue Zhang, Chao-Shu Tang   

  1. 1. National Laboratory of Natural and Biomimetic Drugs, Beijing Medical Uniuersity, Beijing 1000832
    2. Laboratory of Cardiopulmonary Endocinology, Beijing Medical University, Beijing 10083
  • Received:1992-04-24 Revised:1992-09-02 Online:1992-12-15 Published:1992-12-15
  • Contact: Shi-Qi Peng*

摘要: 依据聚精寡肽具有内皮舒张因子EDRF样效应的实验事实, L-Arg-Arg-OH为先导化合物, 合成了L-Arg-ArgOCH3L-Arg-Arg-Arg-OH(L-Arg)2(CO2)CH2以及(L-Arg)2(CO)2CH2CH2四种类似物。它们具有不同程度的舒血管效应。聚精二肽的羧端封锁, 舒血管作用减弱。L-ArgN端用丙二酸或丁二酸桥联, 可减慢其代谢而呈现比聚精二肽弱的舒血管作用。聚精三肽的舒血管作用优于聚精二肽。

关键词: 聚精寡肽, 构效关系, EDRF样效应

Abstract: Based on the EDRF(endothelium derived relaxing factor)-like effects for polyarginine Arg-Arg-OH was selected as the lead compound and its derivatives Arg-Arg-OCH3. Arg Arg-Arg-OH, HO-ArgCOCH2CH2COArg-OH, HO-ArgCOCH2COArg-OH, were synthesized. These substances showed on bioassay various degrees of vasorelaxant activities. With protection for the C-terminal of Arg-Arg-OH with a methyl ester. The vasorelaxing activitv was decreased. In contrast.when the N-terminal of Arg-OH was protected with malonic acid or butane diacid. The biological activites were lower than those of Arg-Arg-OH due to the lowered metabolic rate. With protection of N-terminal of Arg-Arg-OH with L-Arg residue.Arg-Arg-Arg-OH was obtained, which showed a vasorelaxing activity better than that of Arg-Arg-OH. The bioactivities observed on the Wister's rats for the former com- pound become the experimental basis for prodrug design of EDRF.

Key words: Polyarginine oligopeptide, Structure-activity relationships, Endothelium derived relaxing factor (EDRF)-like activties

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