Synthesis and Biological Activity of Novel 2-(.ALPHA.-Alkoxyimino)benzylpyridine Derivatives as K+ Channel Openers.
作者:Tuyshi MAEKAWA、Satoshi YAMAMOTO、Yumiko IGATA、Shota IKEDA、Toshifumi WATANABE、Mitsuru SHIRAISHI
DOI:10.1248/cpb.45.1994
日期:——
The search for novel K+ channel openers with a non-benzopyran skeleton, unlike cromakalim, led to the discovery of a new series of (Z)-2-(alpha-alkoxyimino)benzylpryridine derivatives. Synthesis was achieved by using a (Z)-dominant condensation reaction of benzoylpyridines with O-alkylhydroxylamines, followed by m-chloroperbenzoic acid (m-CPBA) oxidation. The compounds were tested for their vasorelaxant
与cromakalim不同,寻找具有非苯并吡喃骨架的新型K +通道开放剂导致发现了一系列新的(Z)-2-(α-烷氧基亚氨基)苄基吡啶衍生物。合成是通过苯甲酰基吡啶与O-烷基羟胺的(Z)显性缩合反应,然后进行间氯过苯甲酸(m-CPBA)氧化而实现的。测试了这些化合物在四乙基氯化铵(TEA)和BaCl2中的血管舒张活性,以及高KCl诱导的大鼠主动脉收缩,以确定潜在的K +通道开放剂,以及它们在冠状动脉内注射后对冠脉血流(CBF)的影响。麻醉的狗。大量的2-(α-烷氧基亚氨基)苄基吡啶强烈抑制TEA和BaCl2诱导的收缩,对80 nM KCl诱导的收缩没有影响,并以10-30微克/只的狗将CBF增加至基础流量的200%以上。特别是(Z)-2- [5-溴-α-(叔丁氧基亚氨基)-4-氟-2-羟基苄基] -3-羟基吡啶1-氧化物(7d)表现出高度有效的血管舒张活性(EC50 = 0.28 microM