132622-81-2Relevant academic research and scientific papers
A Tobramycin Vector Enhances Synergy and Efficacy of Efflux Pump Inhibitors against Multidrug-Resistant Gram-Negative Bacteria
Yang, Xuan,Goswami, Sudeep,Gorityala, Bala Kishan,Domalaon, Ronald,Lyu, Yinfeng,Kumar, Ayush,Zhanel, George G.,Schweizer, Frank
, p. 3913 - 3932 (2017/05/19)
Drug efflux mechanisms interact synergistically with the outer membrane permeability barrier of Gram-negative bacteria, leading to intrinsic resistance that presents a major challenge for antibiotic drug development. Efflux pump inhibitors (EPIs) which block the efflux of antibiotics synergize antibiotics, but the clinical development of EPI/antibiotic combination therapy to treat multidrug-resistant (MDR) Gram-negative infections has been challenging. This is in part caused by the inefficiency of current EPIs to penetrate the outer membrane and resist efflux. We demonstrate that conjugation of a tobramycin (TOB) vector to EPIs like NMP, paroxetine, or DBP enhances synergy and efficacy of EPIs in combination with tetracycline antibiotics against MDR Gram-negative bacteria including Pseudomonas aeruginosa. Besides potentiating tetracycline antibiotics, TOB-EPI conjugates can also suppress resistance development to the tetracycline antibiotic minocycline, thereby providing a strategy to develop more effective adjuvants to rescue tetracycline antibiotics from resistance in MDR Gram-negative bacteria.
Conformationally Restricted Arginine Analogues
Webb, Thomas R.,Eigenbrot, Charles
, p. 3009 - 3016 (2007/10/02)
We report the practical synthesis and structural characterization of a set of conformationally constrained protected arginine analogues.These enantiomerically pure analogues have the general structure 1 and are prepared in seven to eight steps from the co
