Formula: C3H3ClO3In 2019 ,《Structure-Activity Relationship of Sulfonyl Piperazine LpxH Inhibitors Analyzed by an LpxE-Coupled Malachite Green Assay》 appeared in ACS Infectious Diseases. The author of the article were Lee, Minhee; Zhao, Jinshi; Kwak, Seung-Hwa; Cho, Jae; Lee, Myungju; Gillespie, Robert A.; Kwon, Do-Yeon; Lee, Hyunji; Park, Hyun-Ju; Wu, Qinglin; Zhou, Pei; Hong, Jiyong. The article conveys some information:
The UDP-2,3-diacylglucosamine pyrophosphatase LpxH in the Raetz pathway of lipid A biosynthesis is an essential enzyme in the vast majority of Gram-neg. pathogens and an excellent novel antibiotic target. The 32P-radioautog. thin-layer chromatog. assay has been widely used for anal. of LpxH activity, but it is inconvenient for evaluation of a large number of LpxH inhibitors over an extended time period. Here, we report a coupled, nonradioactive LpxH assay that utilizes the recently discovered Aquifex aeolicus lipid A 1-phosphatase LpxE for quant. removal of the 1-phosphate from lipid X, the product of the LpxH catalysis; the released inorganic phosphate is subsequently quantified by the colorimetric malachite green assay, allowing the monitoring of the LpxH catalysis. Using such a coupled enzymic assay, we report the biochem. characterization of a series of sulfonyl piperazine LpxH inhibitors. Our anal. establishes a preliminary structure-activity relationship for this class of compounds and reveals a pharmacophore of two aromatic rings, two hydrophobic groups, and one hydrogen-bond acceptor. We expect that our findings will facilitate the development of more effective LpxH inhibitors as potential antibacterial agents. The experimental process involved the reaction of Methyl 2-chloro-2-oxoacetate(cas: 5781-53-3Formula: C3H3ClO3)
Methyl 2-chloro-2-oxoacetate(cas: 5781-53-3) belongs to acyl chlorides. Lacking the ability to form hydrogen bonds, acyl chlorides have lower boiling and melting points than similar carboxylic acids. For example, acetic acid boils at 118 °C, whereas acetyl chloride boils at 51 °C. Like most carbonyl compounds, infrared spectroscopy reveals a band near 1750 cm−1.Formula: C3H3ClO3
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics