protocol for a rapid synthesis of different substituted 3-aryl coumarins is reported. A series of different substituted phenyl acetic acids have been successfully reacted with different substituted 2-hydroxy benzaldehydes in the presence of cyanuric chloride (2,4,6-trichloro-1,3,5-triazine) and N-methyl morpholine to afford 3-aryl coumarins in good to excellent yields. synthesis - 3-aryl coumarins -
Design and synthesis of new series of coumarin–aminopyran derivatives possessing potential anti-depressant-like activity
作者:Koneni V. Sashidhara、Ram K. Modukuri、Seema Singh、K. Bhaskara Rao、G. Aruna Teja、Sampa Gupta、Shubha Shukla
DOI:10.1016/j.bmcl.2014.11.036
日期:2015.1
A new series of coumarin based aminopyran derivatives were designed, synthesized and evaluated for their preclinical antidepressant effect on Swiss albino mice. Among the series, compounds 21, 25, 26, 27, 32 and 33 exhibited significant activity profile in forced swimming test (FST). Compound 27 was most efficacious, which at a very low dose of 0.5 mg/kg reduced the time of immobility by 86.5% as compared to the standard drug fluoxetine (FXT) which reduced the immobility time by 69.8% at the dose of 20 mg/kg, ip. In addition, all active compounds were screened in dose dependent manner (at doses of 0.25, 0.5, 1 mg/kg ip) in FST and tail suspension test (TST). Interestingly, all active compounds did not caused any significant alteration of locomotor activity in mice as compared to control, indicating that the hybrids did not produce any motor impairment effects. The results indicate that coumarin-aminopyran derivatives may have potential therapeutic value for the management of mental depression. (C) 2014 Elsevier Ltd. All rights reserved.
Discovery and synthesis of novel 3-phenylcoumarin derivatives as antidepressant agents
A series of 3-phenylcoumarins were synthesized and screened for potential antidepressant activity by tail suspension test (TST) in mice. Three compounds (6, 7 and 13) exhibited impressive antidepressant activity, measured in terms of percentage decrease in immobility duration (% DID). In addition, the active antidepressant compounds were subsequently studied at their most effective dose and activity of these compounds were confirmed in forced swimming test (FST) animal model, in which the compounds at a low dose of 0.5 mg/kg significantly decreased the immobility time and exhibited greater efficacy than the reference standards fluoxetine and imipramine. The potent compounds did not show any neurotoxicity in the rotarod test and the preliminary results are promising enough to warrant further studies around this scaffold. (C) 2011 Elsevier Ltd. All rights reserved.
Discovery of coumarin-dihydroquinazolinone analogs as niacin receptor 1 agonist with in-vivo anti-obesity efficacy
作者:L. Ravithej Singh、Ajeet Kumar、Akanksha Upadhyay、Sampa Gupta、Gopala Reddy Palanati、Kamakshi Sikka、Mohammad Imran Siddiqi、Prem N. Yadav、Koneni V. Sashidhara
DOI:10.1016/j.ejmech.2018.04.037
日期:2018.5
In this study, we presented rational designing and synthesis of coumarin-dihydroquinazolinone conjugates to evaluate their agonist activity at GPR109a receptor. Among the synthesized small molecule library, compound 10c displayed robust agonist action at GPR109a with EC50 < 11 nM. Homology model of human GPR109a protein was generated to realize the binding interaction of the active molecule with the active site of GPR109a. Further, the efficacy of active compound 10c was supported by in -vivo experiments which showed reduced body weight in diet induced obese mice model. Interestingly, compound 10c reduced leptin in blood plasma and total serum cholesterol. These results suggest that the coumarin-dihydroquinazolinone conjugate is a suitable scaffold to further expand the chemical diversity and make them potential niacin receptor 1 agonist. (C) 2018 Elsevier Masson SAS. All rights reserved.
Hybrids of coumarin–indole: design, synthesis and biological evaluation in Triton WR-1339 and high-fat diet induced hyperlipidemic rat models
作者:Koneni V. Sashidhara、K. Bhaskara Rao、Ravi Sonkar、Ram K. Modukuri、Yashpal S. Chhonker、Pragati Kushwaha、Hardik Chandasana、A. K. Khanna、Rabi S. Bhatta、Gitika Bhatia、Manish Kumar Suthar、Jitendra Kumar Saxena、Vikash Kumar、Mohammad Imran Siddiqi
DOI:10.1039/c6md00283h
日期:——
Lipid lowering activity of novel coumarin–indole hybrids has been demonstrated.