https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Synthesis and antibacterial evaluation of novel hydrophilic ocotillol-type triterpenoid derivatives from 20(S)-protopanaxadiol https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:28155 Staphylococcus aureus (CA-MRSA; strain USA300). From this series, compounds 6 and 15 were found to be the most active, both with MIC values of 2 µg/mL against B. subtilis 168 and 8 µg/mL against S. aureus USA300, respectively. Furthermore, subsequent assays showed that compounds 6 and 15 displayed strong synergistic effects at sub-MIC levels against both S. aureus USA300 and B. subtilis 168 when combined with two commercial antibiotics, kanamycin and chloramphenicol. Preliminary structure-activity relationship studies were also performed.]]> Wed 11 Apr 2018 12:07:46 AEST ]]> Novel 3-substituted ocotillol-type triterpenoid derivatives as antibacterial candidates https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20628 Sat 24 Mar 2018 07:55:47 AEDT ]]> Synthesis and biological evaluation of novel ocotillol-type triterpenoid derivatives as antibacterial agents https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:19340 in vitro antibacterial activity against several representative pathogenic bacterial strains. Compounds 20(S)-protopanaxadiol (PPD), 3, 5, 16 and 24 exhibited potent antibacterial activity against Gram-positive bacteria. Compounds 3 and 5 also displayed promising antibacterial activity against a community associated methicillin-resistant Staphylococcus aureus (CA-MRSA; strain USA300). Furthermore, compounds PPD, 3 and 16 combined with two commercially available antibiotics kanamycin and chloramphenicol showed strong synergistic inhibitory effects at their sub-MIC concentrations against S. aureus USA300 and Bacillus subtilis 168. Additionally, cytotoxic activity assay showed that the compounds tested did not affect cell viability of the human epithelial kidney (HEK-293) and human cervical (HeLa) cells at their MICs.]]> Sat 24 Mar 2018 07:52:12 AEDT ]]> Design, synthesis, nitric oxide release and antibacterial evaluation of novel nitrated ocotillol-type derivatives https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:28338 Sat 24 Mar 2018 07:25:14 AEDT ]]>