Synthetic studies on novel benzimidazolopeptides with antimicrobial, cytotoxic and anthelmintic potential
作者:Rajiv Dahiya、Devender Pathak
DOI:10.1016/j.ejmech.2006.11.015
日期:2007.6
presence of cupric chloride. The coupling of compounds 5-8 with different amino acid ester hydrochlorides/dipeptide/tripeptide/tetrapeptide methyl esters afforded novel benzimidazolopeptide derivatives 5a-f, 6a-h, 7a-g and 8a-g. The structures of all newly synthesized compounds were established on the basis of analytical, IR, (1)H NMR, (13)C NMR and mass spectral data. Selected peptide ester derivatives were
在氯化铜的存在下,通过5,6-二甲基-6硝基硝基苯并咪唑与重氮化的取代/未取代的氨基苯甲酸相互作用,合成了四个取代的苯并咪唑基-苯甲酸/水杨酸5-8。将化合物5-8与不同的氨基酸酯盐酸盐/二肽/三肽/四肽甲酯偶联,得到新的苯并咪唑并肽衍生物5a-f,6a-h,7a-g和8a-g。所有新合成的化合物的结构都是基于分析,IR,(1)H NMR,(13)C NMR和质谱数据确定的。通过使用氢氧化锂(LiOH)进一步水解选定的肽酯衍生物,得到相应的酸衍生物5b(a)-d(a),6e(a)-g(a),7c(a)-e(a)和8e (a)-g(a)。筛选所有肽衍生物的抗微生物,驱虫和细胞毒性活性。几乎所有新合成的苯并咪唑类肽对所有三种earth均表现出中等至良好的驱虫活性,对病原性真菌白色念珠菌和黑曲霉,革兰氏阴性细菌铜绿假单胞菌和大肠杆菌具有良好的抗菌活性。化合物8g和8g(a)对道尔顿氏淋巴瘤腹