Three biologically active cyclic peptides, viscumamide, yunnanin A and evolidine were synthesized and the structures were established on the basis of analytical, IR, NMR and mass spectral data. These newly synthesized cyclic peptides were evaluated for antimicrobial and pharmacological activities. Evolidine showed better growth inhibition against bacterial strains than yunnanin A and viscumamide. The anti-inflammatory activity of viscumamide is moderate and the remaining two cyclic peptides are found to be less active. But, all the three cyclic peptides showed weak anthelmintic activity.
三种生物活性环肽,viscumamide、yunnanin A和evolidine被合成,并根据分析、红外线、核磁共振和质谱数据确定了它们的结构。这些新合成的环肽被评估其抗微生物和药理活性。Evolidine对细菌菌株的生长抑制作用优于yunnanin A和viscumamide。Viscumamide的抗炎活性中等,而另外两种环肽的活性较低。但是,这三种环肽都显示出弱的驱虫活性。