Synthesis and evaluation of melphalan-containing N,N-dialkylenkephalin analogs as irreversible antagonists of the .delta. opioid receptor
作者:Jane A. Lovett、Philip S. Portoghese
DOI:10.1021/jm00392a025
日期:1987.9
leucine enkephalin analogues containing melphalan (Mel) in place of Phe4 were synthesized as potentially irreversible antagonists of the delta opioid receptor. These compounds, along with the corresponding Phe4 peptides, were tested for both agonist and antagonist activity in the GPI and MVD smooth muscle preparations. All but two of the eight compounds showed antagonist activity at 1 microM against
含有苯丙氨酸(Mel)代替Phe4的N,N-二烷基化亮氨酸脑啡肽类似物被合成为δ阿片受体的潜在不可逆拮抗剂。测试了这些化合物以及相应的Phe4肽在GPI和MVD平滑肌制剂中的激动剂和拮抗剂活性。在可逆条件下进行测试时,除两种化合物外,其余八种化合物均在MVD中显示了对microD中的[D-Ala2,D-Leu5]脑啡肽(DADLE)具有拮抗活性;在所有情况下,Mel4肽对DADLE的活性均低于相应的Phe4肽。在较高浓度(10 microM)下,两种活性Mel4类似物(苄基)2Tyr-Gly-Gly-Mel-Leu(2a)和(烯丙基)2Tyr-Aib-Aib-Mel-Leu(3a)均显示弱的不可逆拮抗作用在δ受体上