Stereoselective synthesis of a small library of novel spiroheterocyclic hybrids including indolizine, oxindole, and substituted piperidine units has been accomplished in [bmim]Br using a [3 + 2] cycloaddition strategy in good yield and were tested for their anti-inflammatory activities. The effects compounds (4a-o) against inflammation were studied using carrageenan-induced hind paw oedema, croton oil-induced ear oedema, and cotton pellet-induced granuloma models. Among the heterocyclic hybrids, compounds 4d, 4g, and 4o showed significant anti-inflammatory activities against acute and chronic inflammatory models. These compounds also showed significant inhibition of PGE₂, TNF-α, and nitrite levels in carrageenan-induced hind paw oedema. Thus it is evident from our study that these novel spiroheterocyclic hybrids 4d, 4g, and 4o displayed significant anti-inflammatory effects that involve the reduction of PGE₂, TNF-α, and nitrite levels.

使用[3 + 2]环加成策略，在[bmim] Br中完成了一个新颖的螺杂环混合物（包括吲哚利嗪，羟吲哚和取代的哌啶单元）的小型文库的立体选择性合成，并获得了良好的收率，并对其抗炎活性进行了测试。使用角叉菜胶诱导的后爪水肿，巴豆油诱导的耳部水肿和棉丸诱导的肉芽肿模型研究了化合物（4a-o）对炎症的影响。在杂环杂种中，化合物4d，4g和4o对急性和慢性炎症模型表现出显着的抗炎活性。这些化合物还显示出对PGE _2的显着抑制作用角叉菜胶诱发的后爪水肿中的TNF，α和亚硝酸盐水平。因此，从我们的研究中可以明显看出，这些新型螺杂环杂种4d，4g和4o表现出显着的抗炎作用，涉及降低PGE ₂，TNF-α和亚硝酸盐水平。