Adrenorphin, H-Tyr-Gly-Gly-Phe-Met-Arg-Arg-Val-NH2, and its D-Met (O)2-analog were synthesized. In addition, analogs of [Arg6, Phe7] enkephalin substituted at the 2nd position by D-Ala and D-Met (O) were also synthesized, together with four other enkephalin analogs. Among these compounds, [D-Met (O)2] adrenorphin exhibited high analgesic activity (29.1 times that of morphine) antagonized by naloxone, when administered intracisternally to mice.
合成了肾上腺肽(Adrenorphin)、H-Tyr-Gly-Gly-Phe-Met-Arg-Arg-Val-NH2及其D-Met (O)2类似物。此外,还合成了在第二位用D-Ala和D-Met (O)替代的[Arg6, Phe7]内
啡肽的类似物,以及其他四种内
啡肽类似物。在这些化合物中,[D-Met (O)2]肾上腺肽在小鼠颅内施用时表现出较高的镇痛活性(为
吗啡的29.1倍),且其效应被
纳洛酮拮抗。