2 documents found, page 1 of 1
Antimicrobial activity of a library of thioxanthones and their potential as eff...
Durães, F; Palmeira, A; Cruz, B; Freitas-Silva, J; Szemerédi, N; Gales, L; Costa, PM; Remião, F; Silva, R; Pinto, M; Spengler, G; Sousa, EThe overexpression of efflux pumps is one of the causes of multidrug resistance, which leads to the inefficacy of drugs. This plays a pivotal role in antimicrobial resistance, and the most notable pumps are the AcrAB-TolC system (AcrB belongs to the resistance-nodulation-division family) and the NorA, from the major facilitator superfamily. In bacteria, these structures can also favor virulence and adaptation m...
Synthesis of a small library of nature-inspired xanthones and study of their an...
Resende, DISP; Pereira-Terra, P; Moreira, J; Freitas-Silva, J; Lemos, A; Gales, L; Pinto, E; Sousa, ME; Costa, PM; Pinto, MMMA series of thirteen xanthones 3-15 was prepared based on substitutional (appendage) diversity reactions. The series was structurally characterized based on their spectral data and HRMS, and the structures of xanthone derivatives 1, 7, and 8 were determined by single-crystal X-ray diffraction. This series, along with an in-house series of aminated xanthones 16-33, was tested for in-vitro antimicrobial activity ...