Antimicrobial and cytotoxic activities of 1,2,3-triazole-sucrose derivatives

Abstract

A library of 1-(1′,2,3,3′,4,4′,6-hepta-O-acetyl-6′-deoxy-sucros-6′-yl)-1,2,3-triazoles have been investigated for their antibacterial, antifungal and cytotoxic activities. Most of the target compounds showed good inhibitory activity against a variety of clinically and food contaminant important microbial pathogens. In particular, 1-(1′,2,3,3′,4,4′,6-hepta-O-acetyl-6′-deoxy-sucros-6′-yl)-4-(4-pentylphenyl)-1,2,3- triazole (5) was highly active against all the tested bacteria with minimal inhibitory concentrations (MICs) ranging between 1.1 and 4.4 μM and bactericidal concentrations (MBCs) from 2.2 and 8.4 μM. The compound 1-(1′,2,3,3′,4,4′,6-hepta-O-acetyl-6′-deoxy-sucros-6′-yl)-4-(4-bromophenyl)-1,2,3-triazole (3) showed antifungal activity with MICs from 0.6 to 4.8 μM and minimal fungicidal concentrations (MFCs) ranging between 1.2 and 8.9 μM. Furthermore, some of the compounds possessed moderate cytotoxicity against human breast, lung, cervical and hepatocellular carcinoma cell lines, without showing toxicity for nontumor liver cells. The above mentioned derivatives represent promising leads for the development of new generation of sugar-triazole anti fungal agents.This work has been supported by Fundação para a Ciência e a Tecnologia through grant Nos. PEst-C/EQB/LA0006/2013 and PEst-OE/AGR/UI0690/2014. T.M. Potewar and R.C. Calhelha are grateful to Fundação para a Ciência e a Tecnologia for their pos-doctoral Grant Nos. SFRH/ BPD/65173/2009 and SFRH/BPD/68344/2010, respectively. The authors thank to Serbian Ministry of Education, Science and Technological Development for financial support (grant number 173032). The NMR spectrometers are part of The National NMR Facility, supported by Fundação para a Ciência e a Tecnologia (RECI/BBB-BQB/0230/2012)