Novel µ opioid antagonists derived from the µ opioid agonists endomorphin and [Dmt
<sup>1</sup>
]DALDA (H‐Dmt‐D‐Arg‐Phe‐Lys‐NH
<sub>2</sub>
)
作者:Saijian Shi、Jian Xu、LingLing Feng、Xin Fan、Zhen Chen、Yajuan Qin、Nga N. Chung、Tingyou Li、Peter W. Schiller
DOI:10.1111/cbdd.13743
日期:2020.11
Hybrid analogues of the µ opioid agonists endomorphin and [Dmt1]DALDA (H‐Dmt‐D‐Arg‐Phe‐Lys‐NH2, Dmt = 2′,6′‐dimethyltyrosine) containing cis‐4‐amino‐Pro, trans‐4‐amino‐Pro, cis‐4‐aminoethyl‐Pro or cis‐4‐guanidinylethyl‐Pro in the 2 position of the peptide sequence were synthesized. None of the compounds retained high µ opioid agonist activity and, unexpectedly, substitution of cis‐4‐amino‐Pro resulted
µ 阿片类激动剂内吗啡肽和 [Dmt 1 ]DALDA(H-Dmt-D-Arg-Phe-Lys-NH 2,Dmt = 2',6'-二甲基酪氨酸)的杂合类似物,含有顺式-4-氨基-Pro,反式合成了肽序列第 2 位的-4-氨基-Pro、顺式-4-氨基乙基-Pro 或顺式-4-胍基乙基-Pro 。没有一种化合物保持高μ阿片类激动剂活性,出人意料的是,顺式-4-氨基-Pro的取代产生了一类新型的强效μ阿片拮抗剂。特别是,化合物 H-Dmt- cis -4-amino-Pro-Trp-Lys-NH 2 (CZ-1) 是一种高度选择性的 µ 阿片拮抗剂,具有 ~1 nM µ 受体结合亲和力。