Synthesis and biological activity of substance P C-terminal hexapeptide analogues: structure-activity studies
作者:Constantine Poulos、John R. Brown、Christopher C. Jordan
DOI:10.1021/jm00157a028
日期:1986.7
series of analogues of the C-terminal hexapeptide of substance P, modified at the glutaminyl residue, was synthesized and their relative activities as spasmogens were determined in the guinea pig ileum and rat colon muscularis mucosae preparations in vitro. In general, when compared to SP6-11, the loss of the carboxamide group has little effect on activity in the colon and reduces activity on the ileum
合成了一系列在谷氨酰胺残基上修饰的物质P的C端六肽类似物,并在体外确定了豚鼠回肠和大鼠结肠粘膜黏膜制剂中作为痉挛源的相对活性。通常,与SP6-11相比,羧酰胺基的丢失对结肠的活性影响很小,而对回肠的活性降低。例外的是Orn6类似物,它在两种制剂中均具有活性,被提议作为结构活性研究的有用工具。结论是6位取代基的氢键电势可能是生物活性的重要决定因素。