Synthesis of trans-caffeate analogues and their bioactivities against HIV-1 integrase and cancer cell lines.
Xia CN, Li HB, Liu F, Hu WX.
Forty caffeate analogues were synthesized via a convenient method starting from vanillin with moderate to good yields. The testing of biological activity of these compounds against HIV-1 integrase indicates that four compounds: bornyl caffeate, bornyl 2-nitrocaffeate, 5-nitrocaffeic acid and 5-nitrocaffeic acid phenethyl ester (5-nitroCAPE) possess a good HIV integrase inhibitory activity, IC(50) 19.9, 26.8, 25.0 and 13.5 microM , respectively. Twelve caffeate analogues were tested by MTT assay on growth of human hepatocellular carcinoma BEL-7404, human breast MCF-7 adenocarcinoma, human lung A549 adenocarcinoma and human gastric cancer BCG823 cell lines, respectively. And the best result is IC(50) 5.5 microM for CAPE against BEL-7404.