Design and Synthesis of Potent and Highly Selective Orexin 1 Receptor Antagonists with a Morphinan Skeleton and Their Pharmacologies
作者:Hiroshi Nagase、Naoshi Yamamoto、Masahiro Yata、Sayaka Ohrui、Takahiro Okada、Tsuyoshi Saitoh、Noriki Kutsumura、Yasuyuki Nagumo、Yoko Irukayama-Tomobe、Yukiko Ishikawa、Yasuhiro Ogawa、Shigeto Hirayama、Daisuke Kuroda、Yurie Watanabe、Hiroaki Gouda、Masashi Yanagisawa
DOI:10.1021/acs.jmedchem.6b01418
日期:2017.2.9
Nalfurafine, a κ-selective opioid receptor agonist, unexpectedly showed a selective antagonist activity toward the orexin 1 receptor (OX1R) (Ki = 250 nM). Modification of the 17-amino side chain of the opioid ligand to an arylsulfonyl group and the 6-furan acrylamide chain to 2-pyridyl acrylamide led to compound 71 with improvement of the antagonist activity (OX1R, Ki = 1.36 nM; OX2R, not active) without
纳氟拉芬(一种κ选择性阿片受体激动剂)出乎意料地表现出对orexin 1受体(OX 1 R)的选择性拮抗剂活性(K i = 250 nM)。将阿片样物质配体的17-氨基侧链修饰为芳基磺酰基并将6-呋喃丙烯酰胺链修饰为2-吡啶基丙烯酰胺导致化合物71具有拮抗活性的提高(OX 1 R,K i = 1.36 nM; OX 2 R,无活性)对阿片受体没有任何可检测的亲和力。71的二氢硫酸盐易溶于水,减弱了吗啡的物理依赖性。此外,在这项研究中,所有活性纳富拉芬衍生物几乎都没有对OX 2 R的活性,这导致了较高的OX 1 R选择性。这些结果表明,萘呋那芬衍生物可能是开发高选择性OX 1 R拮抗剂的有用的先导化合物系列。