Synthesis of a series of novel spiro pyrrolidines has been accomplished by 1, 3-dipolar cycloaddition reaction of azomethine ylide generated from phenylalanine and isatin with dipolarophiles in good yield. The reaction proceeded with high regio and stereoselectivity. The products have been characterized by elemental analyses and spectroscopic techniques, namely IR, 1H NMR and 13C NMR spectroscopies. Single crystal analysis of compounds 4k 2D-NMR analysis of compound 4k confirmed the structures of spiropyrrolidine derivatives. These compounds were evaluated for their antimicrobial activity. Most of the synthetic compounds exhibited good activity against microorganisms.
通过苯丙
氨酸和
靛红与双极性亲核试剂发生1,3-偶极环加成反应,已成功合成了一系列新型螺
吡咯烷。该反应具有高度的位阻和立体选择性。通过元素分析和光谱技术(即红外光谱、1H核磁共振和13C核磁共振)对产物进行了表征。化合物4k的单晶分析和2D-NMR分析证实了螺
吡咯烷衍
生物的结构。对这些化合物的抗菌活性进行了评估。大多数合成化合物对微
生物表现出良好的活性。