Structure-Based Design of a New Series of d-Glutamic Acid Based Inhibitors of Bacterial UDP-N-acetylmuramoyl-l-alanine:d-glutamate Ligase (MurD)
摘要:
MurD ligase is one of the key enzymes participating in the intracellular steps of peptidoglycan biosynthesis and constitutes a viable target in the search for novel antibacterial drugs to combat bacterial drug-resistance. We have designed, synthesized, and evaluated a new series of D-glutamic acid-based Escherichia colt MurD inhibitors incorporating the 5-benzylidenethiazolidin-4-one scaffold. The crystal structure of 16 in the MurD active site has provided a good starting point for the design of structurally optimized inhibitors 73-75 endowed with improved MurD inhibitory potency (IC50 between 3 and 7 mu M). Inhibitors 74 and 75 showed weak activity against Gram-positive Staphylococcus aureus and Enterococcus faecalis. Compounds 73-75, with IC50 values in the low micromolar range, represent the most potent D-Glu-based MurD inhibitors reported to date.
Privileged Scaffolds or Promiscuous Binders: A Comparative Study on Rhodanines and Related Heterocycles in Medicinal Chemistry
作者:Thomas Mendgen、Christian Steuer、Christian D. Klein
DOI:10.1021/jm201243p
日期:2012.1.26
campaigns, we decided to perform a systematic study on their promiscuity. An amount of 163 rhodanines, hydantoins, thiohydantoins, and thiazolidinediones were synthesized and tested against several targets. The compounds were also characterized with respect to aggregation and electrophilic reactivity, and the binding modes of rhodanines and relatedcompounds in published X-ray cocrystal structures were analyzed
The present invention relates to indolinones of general formula ##STR1## wherein R.sub.1 to R.sub.3 are defined in claim 1, the isomers and the salts thereof, particularly the physiologically acceptable salts thereof which have valuable pharmacological properties, particularly an inhibiting effect on various kinases and cycline/CDK complexes and on the proliferation of various tumour cells, pharmaceutical compositions containing these compounds, their use and processes for preparing them.
作者:José M. Fraile、Gustavo Lafuente、José A. Mayoral、Antonio Pallarés
DOI:10.1016/j.tet.2011.09.034
日期:2011.11
derivatives, can be obtained by different synthetic routes. These compounds can undergo a large variety of reactions, such as Diels–Alder, epoxidation, methanol addition and conjugate addition reactions of different types of nucleophiles, including carbon (cyanide), nitrogen (piperidine) and sulfur (thiols, thioacetate) nucleophiles. The reactivity with electrophilic reagents, such as m-CPBA or methanol
agrochemicals and therapeutics. This structural motif is of interest in the synthesis of small building blocks suitable for the preparation of potentially bioactive molecules. In this sense, 5‐alkylidene and 5‐arylidenehydantoins constitute nice examples of precursors of synthetic α‐amino acids. The microwave‐assistedsynthesis of these compounds under green chemistry conditions is reported in this article
Latent inhibitors. Part 6. Inhibition of dihydro-orotate dehydrogenase by substituted 5-benzylhydantoins
作者:Colin Howie、Colin J. Suckling、Hamish C. S. Wood
DOI:10.1039/p19900003129
日期:——
A series of substituted 5-benzyl-3-(1-carboxy-2-phenylethyl)hydantoins was prepared by condensation of aromatic aldehydes with the corresponding 5-unsubstituted hydantoin followed by reduction of the intermediate benzylidene derivative. The compounds were assessed as inhibitors of dihydro-orotatedehydrogenasefrom Clostridium oroticum. It was found that hydrophobic and electron-donating substituents