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Relevant academic research and scientific papers

Design and synthesis of newer N-benzimidazol-2yl benzamide analogues as allosteric activators of human glucokinase

Allosteric activators of human glucokinase (GK) had revealed significant hypoglycemic effects for therapy of type-2 diabetes (T2D) in animal as well as human models. Some newer N-benzimidazol-2yl substituted benzamide analogues were prepared and assessed for activation of GK accompanied by molecular docking investigations for predicting the bonding interactions of these derivatives with the residues in allosteric site of GK protein. Amongst the derivatives synthesized, compounds 2 and 7 strongly increased catalytic action of GK (GK activation fold >2.0 in comparison to control) in vitro. The results of in-vitro testing were supported by the molecular docking investigations of these analogues with GK protein’s allosteric site residues (showed appreciable H-bond interactions with Arg63 residue of GK). Derivatives investigated in present study afforded few lead compounds for the discovery of harmless and strong allosteric GK activating compounds for treating T2D.

Synthesis,docking and evaluation of phenylacetic acid and trifluoro-methylphenyl substituted benzamide derivatives as potential ppar? agonists

Background: Peroxisome proliferator-activated receptor (PPAR) ? is a type of PPARs belonging to the steroid or nuclear hormone receptor super family. Activation of PPAR? leads to metabolism of fat instead of glucose by body for energy requirements. PPAR? represent an emerging pharmacological target for the treatment of metabolic syndrome (MS). Many selective and potent PPAR? agonists had been synthesized with a potential role in the treatment of various disorders associated with MS including type 2 diabetes and inflammation. Objective: The present work was designed to synthesize and evaluate the antidiabetic and anti-inflammatory activity of some newer phenylacetic acid and trifluoromethylphenyl substituted benzamide derivatives as potential PPAR? agonists. Methods: This work involved the synthesis of newer sulfamoyl benzamide derivatives and their evaluation by molecular docking studies to determine the binding interactions for the best fit conformations in the binding site of the PPAR? protein. Based on the results of the in silico studies, the selected compounds were tested for their antidiabetic and anti-inflammatory activity in the animal models. Results: Amongst the synthesized molecules, compound 7 showed higher anti-diabetic activity and compound 19 showed higher anti-inflammatory activity. The experimental results were found to be in concordance with that of the in silico results. Most of the synthesized molecules were found to have drug like properties as devised by Lipinski's rule of five. Conclusion: These molecules can act as the starting hits for the design of safe, effective and bioavailable PPAR? agonists for the potential treatment of MS and related diseases.

Synthesis, docking and antidiabetic activity of some newer benzamide derivatives as potential glucokinase activators

Background: Glucokinase activators (GKAs) are the new class of candidate drugs which act on glucokinase (GK) enzyme and show their hypoglycaemic activity. Objective: The present work was planned to synthesize and evaluate the antidiabetic activity of a series of newer benzamide derivatives as potential GKAs. Method: This work involved synthesis of newer benzamide derivatives from benzoic acid and their evaluation by docking studies to determine the binding interactions for the best fit conformations in the binding site of GK enzyme. Based on the results of docking studies, the selected molecules were tested for their antidiabetic activity in the animal model. Results: Amongst the synthesized molecules, compounds 14 and 20 with phenyl-substituted thiazole moiety on amide nitrogen, exhibited highest activity in vivo. The results of the in vivo antidiabetic studies were found to be consistent with those of docking studies. Conclusion: These newly synthesized molecules thus can be treated as the initial hits for the development of new, safe, effective and orally bioavailable GKAs as therapeutic agents for the treatment of diabetic disorders.

Synthesis and biological evaluation of novel (E)-N′-(2,3-dihydro-1H-inden-1-ylidene) benzohydrazides as potent LSD1 inhibitors

Lysine specific demethylase 1 (LSD1) plays an important role in regulating histone lysine methylation at residues K4 and K9 on histone H3 and is recognized as an attractive therapeutic target in multiple malignancies. In this study, a series of novel (E)-N′-(2,3-dihydro-1H-inden-1-ylidene) benzohydrazides were synthesized and biologically evaluated for their potential LSD1 inhibitory effect. Among them, compounds 5a and 5n showed the most potent LSD1 inhibitory activity with IC50values of 1.4 and 1.7?nM, respectively, which were about 10 times more potent compared with (E)-N-(1-(5-chloro-2-hydroxyphenyl) ethylidene)-3-(morpholinosulf-only) benzohydrazide (J. Med. Chem. 2013, 56, 9496–9508; as reference compound). Compounds 5a and 5n also exhibited marked anti-proliferation activities against cancer cell lines that highly expressed LSD1. These results suggest that these optimized compounds might be served as promising LSD1 inhibitors against cancer, which merit further study.

Urea-tetrahydrobenzoxanthene receptors for carboxylic acids

Hydrogen-bonding receptors for carboxylic acids have been prepared based on a cis tetrahydrobenzoxanthene skeleton. X-ray diffraction study of one of these compounds revealed that the cleft is suitable for establishing strong linear hydrogen bonds with the oxygen of a water molecule. Complexes that set only three H-bonds with the guests showed no chiral recognition with amino acid derivatives. However, suitable functionalization of the receptor provided a fourth H-bond with certain amino acid derivatives, leading to significant enantioselective complexation in this case.