Several heterosteroids containing a dihydroethisterone skeleton were prepared and shown to displace substance P in a receptor binding assay. Further biochemical (kinetic and Scatchard analyses) and pharmacological evaluation (substance P-induced plasma extravasation and salivation in the rat) of a representative example in this series (5a) established that these compounds are competitive antagonists
制备了几种含有二氢乙二酮骨架的杂类
固醇,并在受体结合试验中显示出可取代物质P的性质。该系列(5a)中代表性实例的进一步生化(动力学和Scatchard分析)和药理评估(大鼠中P诱导的血浆渗出和唾液分泌)确定了这些化合物是P物质受体的竞争性拮抗剂。