92103-22-5

Usage

Preparation

Preparation by Friedel–Crafts acylation of 4-chlororesorcinol with phenylacetyl chloride in nitrobenzene in the presence of aluminium chloride, first at 10°, then at r.t. for 36 h (73%).

Upstream product

• 103-82-2 phenylacetic acid 
• 95-88-5 4-Chlororesorcinol 

Downstream Products

• 558641-63-7 6-chloro-7-hydroxy-2-methyl-3-phenyl-4H-chromen-4-one 

Relevant academic research and scientific papers

Repurposing Hsp90 inhibitors as antibiotics targeting histidine kinases

To address the growing need for new antimicrobial agents, we explored whether inhibition of bacterial signaling machinery could inhibit bacterial growth. Because bacteria rely on two-component signaling systems to respond to environmental changes, and because these systems are both highly conserved and mediated by histidine kinases, inhibiting histidine kinases may provide broad spectrum antimicrobial activity. The histidine kinase ATP binding domain is conserved with the ATPase domain of eukaryotic Hsp90 molecular chaperones. To find a chemical scaffold for compounds that target histidine kinases, we leveraged this conservation. We screened ATP competitive Hsp90 inhibitors against CckA, an essential histidine kinase in Caulobacter crescentus that controls cell growth, and showed that the diaryl pyrazole is a promising scaffold for histidine kinase inhibition. We synthesized a panel of derivatives and found that they inhibit the histidine kinases C. crescentus CckA and Salmonella PhoQ but not C. crescentus DivJ; and they inhibit bacterial growth in both Gram-negative and Gram-positive bacterial strains.

The identification, synthesis, protein crystal structure and in vitro biochemical evaluation of a new 3,4-diarylpyrazole class of Hsp90 inhibitors

High-throughput screening identified the 3,4-diarylpyrazole CCT018159 as a novel and potent (7.1 μM) inhibitor of Hsp90 ATPase activity. Here, we describe the synthesis of CCT018159 and a number of close analogues together with data on their biochemical p