Lipoxygenase Inhibitors, Part 6[1]. Synthesis of New Tetrahydropyrazine and Other Heterocyclic Compounds by Reaction of Hydrazonoyl Chlorides
作者:Petra Frohberg、Michael Wiese、Peter Nuhn
DOI:10.1002/ardp.19973300302
日期:——
Cyclization reactions of α‐ketoarylhydrazonoyl chlorides with various dinucleophiles lead to new 1,4‐benzothiazine, quinoxaline, tetrahydropyrazine, thiazole, and thiadiazoline derivatives of methyl butanoate or methyl 5‐oxopentanoate. The inhibition of 5‐lipoxygenase (LO) was determined by monitoring the leukotriene B4 (LTB4) formation of human polymorphonuclear leukocytes (PMNL). The IC50 values
α-酮芳基腙酰氯与各种双亲核试剂的环化反应生成新的 1,4-苯并噻嗪、喹喔啉、四氢吡嗪、噻唑和丁酸甲酯或 5-氧代戊酸甲酯的噻二唑啉衍生物。通过监测人多形核白细胞 (PMNL) 的白三烯 B4 (LTB4) 形成来确定 5-脂氧合酶 (LO) 的抑制作用。发现具有芳基腙结构的最活跃化合物的 IC50 值介于 0.7 和 7.5 μM 之间。