An example of green surfactant systems based on inherently biodegradable IL-derived amphiphilic oximes
作者:Subhashree Jayesh Pandya、Illia V. Kapitanov、Zeba Usmani、Reshma Sahu、Deepak Sinha、Nicholas Gathergood、Kallol K. Ghosh、Yevgen Karpichev
DOI:10.1016/j.molliq.2020.112857
日期:2020.5
structure and follows the tendency Phe > Ala > amide. Phenylalanine-based oximes demonstrate >30% of degradation in the CBT after 42 days and can be considered as inherently degradable. The acid ionization constant (pKa) of studied oximes determined by means of UV–vis spectroscopy at 27 °C were found to be in the range from 8.00 to 9.00. The pKa,app values of oximes in the presence of cationic gemini surfactants
The rapid growth of antibiotic resistance in Staphylococcus aureus coupled with their biofilm forming ability has made the infections difficult to treat with conventional antibiotics.
金黄色葡萄球菌对抗生素的快速耐药性增长,加上其生物膜形成能力,使得这些感染难以用传统抗生素治疗。
Low-toxicity amphiphilic molecules linked by an aromatic nucleus show broad-spectrum antibacterial activity and low drug resistance
Amphiphilic molecules linked by an aromatic nucleus were developed that showed high selectivity toward bacteria over mammalian cells, and lowdrugresistance. A promising compound 4g exhibited strong bactericidal activity against a panel of sensitive and resistant bacteria, low toxicity, the ability to reduce cell viability in biofilms, stability in mammalian fluids, rapid killing of pathogens, and
Semi-synthesis of bioactive fluorescent analogues of the cytotoxic marine alkaloid discorhabdin C
作者:Cary F.C. Lam、Anna C. Giddens、Natasha Chand、Victoria L. Webb、Brent R. Copp
DOI:10.1016/j.tet.2012.02.052
日期:2012.4
facilitated the synthesis of a variety of fluorophore-labelled probes, of which dansyl analogue 20 exhibited biological activity, providing a tool for mechanism of action and cellular localization studies. An alternative probe design was also exemplified, whereby a bioactive alkyne-terminated analogue (24) was found to undergo Huisgen 1,3-dipolar cycloaddition ‘click’ reactions with fluorescent azides, enabling
Further Investigations into Rigidity‐Activity Relationships in BisQAC Amphiphilic Antiseptics
作者:Austin J. Leitgeb、Javier A. Feliciano、Hugo A. Sanchez、Ryan A. Allen、Kelly R. Morrison、Kyle J. Sommers、Robert G. Carden、William M. Wuest、Kevin P. C. Minbiole
DOI:10.1002/cmdc.201900662
日期:2020.4.20
antimicrobial activity. The synthesized compounds showed strong antimicrobial activity against a panel of both Gram-positive and Gram-negative bacteria, including methicillin-resistant Staphylococcus aureus (MRSA). While the linker geometry showed only a modest correlation with antimicrobial activity, several of the synthesized bisQACs are promising potential antiseptics due to good antimicrobial activity (MIC≤2 μM)