Synthesis of Pyrrolo[2,3-a]pyrrolizidino Derivatives Through Intramolecular 1,3-Dipolar Cycloaddition in Ionic Liquid Medium
摘要:
An ecofriently method for the synthesis of pyrrole-fused polycyclic heterocycles through intramolecular 1,3-dipolar cycloaddition reaction of azomethine ylides derived from pyrrole-2-carbaldehyde and secondary amino acids in ionic liquid [bmim][BF4] as green solvent is reported.
Synthesis of a series of novel tetrahydroquinoline annulated heterocycles has been accomplished by intramolecular imino and bisimino Diels-Alder reaction. These compounds were evaluated for their antibacterial activity. All the synthetic compounds, exhibited good antibacterial activity against microorganisms of which one of them 7 was found to be as active as the antibiotic ciplofloxacin and is found to have MIC value of 2.5 mg/mL against Escherichia coli. (C) 2008 Elsevier Ltd. All rights reserved.