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Browsing by Subject "Medical University of Lublin (Poland)"

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    The Synthesis and Biological Activity of N-Acylated Amino Acids. A Collaborative Effort of Distributed Drug Discovery (D3)
    (Office of the Vice Chancellor for Research, 2016-04-08) Scott, William L.; Popiołek, Łukasz; Biernasiuk, Anna; Hitchens, Jake R.; Samaritoni, J. Geno; O’Donnell, Martin J.
    As part of a Distributed Drug Discovery collaborative effort between students at IUPUI and Medical University of Lublin (Poland), the solid-phase combinatorial synthesis of a series of natural, acylated tyrosine (1) and phenylalanine (2) analogs was carried out in replicated fashion. The crude samples were purified and characterized by LC/MS, proton NMR, and in cases involving novel structures, by proton and carbon-13 NMR and high-resolution mass spectrometry. The samples were characterized in biological assays at the Medical University of Lublin against the Gram-positive bacteria Staphylococcus aureus ATCC 25923, Staphylococcus epidermidis ATCC 12228, Bacillus cereus ATCC 10876, Bacillus subtilis ATCC 10876, and Micrococcus luteus ATCC 10240. Although activity of the 2-nitro and 3-nitro derivatives of phenylalanine was not reproduced by the IUPUI samples, the 5-chlorosalicylic acid derivative 1g demonstrated good activity against M. luteus (MIC = 62.5 g/mL) and moderate activity against S. aureus, S. epidermidis, and B. cereus. O Cl OH HN OH OH O O Ar HN X OH O 1 X = OH 2 X = H 1g
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