Synthesis and Biological Activity of Novel 1,3-Benzoxazine Derivatives as K+ Channel Openers.
作者:Satoshi YAMAMOTO、Shohei HASHIGUCHI、Shokyo MIKI、Yumiko IGATA、Toshifumi WATANABE、Mitsuru SHIRAISHI
DOI:10.1248/cpb.44.734
日期:——
A new series of 1,3-benzoxazine derivatives with a 2-pyridine 1-oxide group at C4 was designed to explore novel K+ channel openers. Synthesis was carried out by using a palladium(0)-catalyzed carbon-carbon bond formation reaction of imino-triflates with organozinc reagents and via a new one-pot 1,3-benzoxazine skeleton formation reaction of benzoylpyridines. The compounds were tested for vasorelaxant
设计了一系列在C4处带有2-吡啶1-氧化物基团的1,3-苯并恶嗪衍生物新系列,以探索新型的K +通道开放剂。通过使用亚氨基三氟甲磺酸的钯(0)催化的碳-碳键形成反应与有机锌试剂进行合成,并通过新的一锅一锅的苯甲酰基吡啶的1,3-苯并恶嗪骨架形成反应进行合成。测试了这些化合物在四乙基氯化铵(TEA)中的血管舒张活性,以及BaCl2诱导的和高KCl诱导的大鼠主动脉收缩,以确定潜在的K +通道开放剂,以及在自发性高血压大鼠中的口服降压作用。1,3-苯并恶嗪核的C6处具有适当形状的吸电子基团和C7处具有甲基或卤代基团是开发最佳血管舒张剂和降血压活性所必需的。特别是,