Synthesis of N-(3,6-dihydro-1(2H)-pyridinyl)benzamides with hyperglycemic-hypoglycemic activity
摘要:
A group of N-(3,6-dihydro-1(2H)-pyridinyl)benzamides 7 were synthesized to determine the effect that the position and physicochemical properties of substituents attached to the heterocyclic ring have on blood glucose levels. 5-Methyl-N-(3,6-dihydro-1(2H)-pyridinyl)benzamide 7b was the most active hyperglycemic agent, elevating blood glucose 124% and 116% at 2 and 4 h, respectively, after a 100 mg/kg po dose. The most active hypoglycemic agent was the 4-acetyl analogue 7o, which was about 50% as active as chlorpropamide, lowering blood glucose 19% at 4 h after a 100 mg/kg po dose. A correlation between blood glucose levels and the partition coefficient P was not observed.
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。