Design and synthesis of a novel DNA-encoded chemical library using Diels-Alder cycloadditions
作者:Fabian Buller、Luca Mannocci、Yixin Zhang、Christoph E. Dumelin、Jörg Scheuermann、Dario Neri
DOI:10.1016/j.bmcl.2008.07.038
日期:2008.11
DNA-encoded chemical libraries are increasingly being employed for the identification of binding molecules to protein targets of pharmaceutical relevance. Here, we describe the synthesis and characterization of a DNA-encoded chemical library, consisting of 4000 compounds generated by Diels-Alder cycloaddition reactions. The compounds were encoded with unique DNA fragments which were generated through
Evaluation of new antimicrobial agents on <i>Bacillus spp</i>. strains: docking affinity and <i>in vitro</i> inhibition of glutamate-racemase
作者:Feliciano Tamay-Cach、José Correa-Basurto、Lourdes Villa-Tanaca、Teresa Mancilla-Percino、Margarita Juárez-Montiel、José G. Trujillo-Ferrara
DOI:10.3109/14756366.2012.705837
日期:2013.10.1
Three glutamic acid derivatives, two boron-containing and one imide-containing compound, were synthesized and tested for antimicrobial activity targeting glutamate-racemase. Antimicrobial effect was evaluated over Bacillus spp. Docking analysis shown that the test compounds bind near the active site of racemase isoforms, suggesting an allosteric effect. The boron derivatives had greater affinity than the imide derivative. In vitro assays shown good antimicrobial activity for the boron-containing compounds, and no effectiveness for the imide-containing compounds. The minimum inhibitory concentration of tetracycline, used as standard, was lower than that of the boron-containing derivatives. However, it seems that the boron-containing derivatives are more selective for bacteria. Experimental evidence suggests that the boron-containing derivatives act by inhibiting the racemase enzyme. Therefore, these test compounds probably impede the formation of the bacterial cell wall. Thus, the boron-containing glutamic acid derivatives should certainly be of interest for future studies as antimicrobial agents for Bacillus spp.
Design of supported organocatalysts from a biomass-derived difuran compound and catalytic assessment for lactose hydrolysis
作者:Hochan Chang、Alexios G. Stamoulis、George W. Huber、James A. Dumesic
DOI:10.1039/d2gc04243f
日期:——
form a difunctional organocatalyst. The catalytic activity of the organocatalyst can be improved by immobilizing the organocatalyst on solid supporting materials. Accordingly, the structures of these immobilized organocatalysts can be engineered to mimic enzymatic active sites and to control the interaction between reactants, products, and transition states of catalytic reactions. Lactose hydrolysis