Synthesis and biological activity of novel 1, 3-benzoxazine derivatives as K+ channel openers.

S Yamamoto, S HASHIGUCHI, S MIKI…

Index: Yamamoto, Satoshi; Hashiguchi, Shohei; Miki, Shokyo; Igata, Yumiko; Watanabe, Toshifumi; Shiraishi, Mitsuru Chemical and Pharmaceutical Bulletin, 1996 , vol. 44, # 4 p. 734 - 745

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Citation Number: 32

Abstract

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 swas 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 activity in ...