Synthesis of some<i>N</i>-[pyridyl(phenyl)carbonylamino]hydroxyalkyl-(benzyl)-1,2,3,6-tetrahydropyridines as potential anti-inflammatory agents
作者:Kode Nageswara Rao、Kinfe K. Redda、Folakemi Y. Onayemi、Hailemichael Melles、Jongoh Choi
DOI:10.1002/jhet.5570320151
日期:1995.1
hydroxymethyl and benzyl substituted pyridines 2. Attack of the pyridinium chlorides 3 with pyridylcarbonyl hydrazides or benzoyl hydrazides 4 gave the isolable 2,4-dinitroanilino derivative 5 which underwent hydrolysis when refluxed in water:p-dioxane mixture (1:4 v/v) to afford the pyridinium ylides 6. Sodium borohydride reduction of 6 in absolute ethanol at 0° for 4–6 hours resulted in the isolation
已知1,2,3,6-四氢吡啶具有镇痛,抗炎,高血糖和降血糖活性。通过使1-氯-2,4-二硝基苯与羟丙基,羟甲基和苄基取代的吡啶2反应形成取代的2,4-二硝基苯基吡啶鎓氯化物3。用吡啶基羰基酰肼或苯甲酰肼4攻击吡啶鎓氯化物3,得到可分离的2,4-二硝基苯胺基衍生物5,当在水:对二恶烷混合物(1:4 v / v)中回流时进行水解,得到吡啶鎓酰化物6。硼氢化钠还原量为6将其在0°C的纯乙醇中放置4-6小时,从而以高收率分离出1,2,3,6-四氢吡啶7。