206273-87-2Relevant articles and documents
Linker-switch approach towards new ATP binding site inhibitors of DNA gyrase B
Juki?, Marko,Ila?, Janez,Brvar, Matja?,Kikelj, Danijel,Cesar, Jo?ko,Anderluh, Marko
, p. 500 - 514 (2017)
Due to increasing emergence of bacterial resistance, compounds with new mechanisms of action are of paramount importance. One of modestly researched therapeutic targets in the field of antibacterial discovery is DNA gyrase B. In the present work we synthesized a focused library of potential DNA gyrase B inhibitors composed of two key pharmacophoric moieties linked by three types of sp3-rich linkers to obtain three structural classes of compounds. Using molecular docking, molecular dynamics and analysis of conserved waters in the binding site, we identified a favourable binding mode for piperidin-4-yl and 4-cyclohexyl pyrrole-2-carboxamides while predicting unfavourable interactions with the active site for piperazine pyrrole-2-carboxamides. Biological evaluation of prepared compounds on isolated enzyme DNA gyrase B confirmed our predictions and afforded multiple moderately potent inhibitors of DNA gyrase B. Namely trans-4-(4,5-dibromo-1H-pyrrole-2-carboxamide)cyclohexyl)glycine and 4-(4-(3,4-dichloro-5-methyl-1H-pyrrole-2-carboxamido)piperidin-1-yl)-4-oxobutanoic acid with an IC50value of 16 and 0.5?μM respectively.
Synthesis and Biological Evaluation of Fentanyl Analogues Modified at Phenyl Groups with Alkyls
Qin, Yajuan,Ni, Luofan,Shi, Jiawei,Zhu, Zhiying,Shi, Saijian,Lam, Ai-Leen,Magiera, Julia,Sekar, Sunderajhan,Kuo, Andy,Smith, Maree T.,Li, Tingyou
, p. 201 - 208 (2018/09/25)
A series of fentanyl analogues modified at the phenyl group of the phenethyl with alkyl and/or hydroxyl and alkoxy, and the phenyl group in the anilido moiety replaced with benzyl or substituted benzyl, were synthesized. The in vitro opioid receptor functional activity of these compounds was evaluated by assessment of their ability to modulate forskolin-stimulated cAMP accumulation and by their ability to induce β-arrestin2 recruitment. Compound 12 is a potent μ-opioid (MOP) receptor agonist, a potent κ-opioid (KOP) receptor antagonist with weak β-arrestin2 recruitment activity. Compounds 10 and 11 are potent MOP receptor agonists with weak δ-opioid (DOP) receptor antagonist activity and moderate KOP receptor antagonist activity as well as weak β-arrestin2 recruitment activity at the MOP receptor. These compounds are promising leads for discovery of potent opioid analgesics with reduced side effects relative to clinically available strong opioid analgesics.
Piperidinyl Ureas Chemically Control Defective in Cullin Neddylation 1 (DCN1)-Mediated Cullin Neddylation
Hammill, Jared T.,Scott, Daniel C.,Min, Jaeki,Connelly, Michele C.,Holbrook, Gloria,Zhu, Fangyi,Matheny, Amy,Yang, Lei,Singh, Bhuvanesh,Schulman, Brenda A.,Guy, R. Kiplin
, p. 2680 - 2693 (2018/04/23)
We previously discovered and validated a class of piperidinyl ureas that regulate defective in cullin neddylation 1 (DCN1)-dependent neddylation of cullins. Here, we report preliminary structure-activity relationship studies aimed at advancing our high-throughput screen hit into a tractable tool compound for dissecting the effects of acute DCN1-UBE2M inhibition on the NEDD8/cullin pathway. Structure-enabled optimization led to a 100-fold increase in biochemical potency and modestly increased solubility and permeability as compared to our initial hit. The optimized compounds inhibit the DCN1-UBE2M protein-protein interaction in our TR-FRET binding assay and inhibit cullin neddylation in our pulse-chase NEDD8 transfer assay. The optimized compounds bind to DCN1 and selectively reduce steady-state levels of neddylated CUL1 and CUL3 in a squamous cell carcinoma cell line. Ultimately, we anticipate that these studies will identify early lead compounds for clinical development for the treatment of lung squamous cell carcinomas and other cancers.
