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
New Syntheses of Benzotriazepines by Non-convenient Cyclization Reaction of N1,N3-Diarylamidrazones
作者:Petra Frohberg、Peter Nuhn
DOI:10.3987/com-96-7623
日期:——
Reactions of derivatives of amidrazones with formaldehyde give triazole, triazoline and unexpected benzotriazepine derivatives. We examined the effects of the substitution pattern of the N-3-aryl ring.