Pyrazole-based and N,N-diethylcarbamate functionalized some novel aurone analogs: Design, synthesis, cytotoxic evaluation, docking and SAR studies, against AGS cancer cell line

The present study involves the design, synthesis, and biological evaluation of a series of thirty-three, pyrazole-based and N,N-diethylcarbamate functionalized, novel aurone analogs, against AGS cancer cell line. These novel aurone analogs are obtained from the reaction of pyrazole-based 6-hydroxyaurones with diethyl carbamoyl chloride using mild basic reagent. The cytotoxic activities of these compounds were evaluated against a human gastric adenocarcinoma cell line (AGS) and disclosed some potential outcomes as several analogs were found to have cytotoxicity better than the reference drugs Oxaliplatin and Leucovorin. The structure-activity relationship (SAR) study further unveiled the critical role of replacing the hydroxyl group in ring A with a carbamoyl group for cytotoxic activity. Among these aurone analogs, 8e and 8f, with IC50 values of 6.5 ± 0.024 μM and 6.6 ± 0.035 μM, respectively, are identified as the most active compounds. Molecular docking studies were conducted against HER2, a human epidermal growth factor involved in gastric and ovarian cancer, to investigate the binding interactions between the compounds and the protein HER2, where7e and 8e exhibited maximum interactions.

An ultrasound-assisted three component protocol for the regio and stereo-selective synthesis of some novel dispiroheterocycles and their biological evaluation as anti-inflammatory, anti-obesity agents

aims:

Greener Synthesis and biological evaluation of some novel dispiroheterocycles

background:

The increasing utilization of spiro compounds in drug discovery, led us to design and synthesize regioselectively some novel dispiroheterocycles, by a standard 1,3-dipolar cycloaddition reaction between 6-hydroxyaurone and in situ generated azomethine ylides, using ultra-sonication as green energy source. These results are first of its kind in the literature reported so far for the similar conditions. After confirmation of the proposed structures spectroscopically, using 1H NMR, 13C NMR and FT-IR spectral data, all the compounds are screened for their potential biological activities.

objective:

To develop greener protocol for the synthesis of dispiroheterocycles and their biological evaluation

method:

Three component protocol, that contains (Z)-2-benzylidene-6-hydroxybenzofuran-3(2H)-one, sarcosine and unsubstituted isatin. In which azomethine ylides react with olefinic dipolarophiles through 1,3-dipolar cycloaddition which is highly regio- and stero-selective way in situ. Structures of the proposed products have been confirmed using 1H NMR, 13C NMR and FT-IR spectral data.

result:

In order to screen the potential biological activities of the synthesized compounds their effect was observed on trypsin, amylase and lipase activities. Differential effect has been observed. Trypsin was substantially activated whereas an inhibitory effect was observed for amylase and lipase supported by in-silico studies.

conclusion:

Synthesis of six novel 6-hydroxy-1'-methyl-4'-phenyl-3H-dispiro[benzofuran-2,3'-pyrrolidine-2',3''-indoline]-2'',3-dione derivatives have been made using a multicomponent greener protocol. These synthesized compounds have exhibited differential effect toward trypsin, amylase and lipase well supported by in-silico studies. Thus the present study highlight their potential use as anti-inflammatory, anti-obesity agents.

other:

Characterization and enzymatic study of the synthesized novel dispiroheterocycles