Synthesis of novel 3-carboxamide-benzocoumarin derivatives as orally active antithrombotic agents
摘要:
In an effort to develop potent antithrombotic agents, a series of novel 3-carboxamide-benzocoumarin derivatives were synthesized and screened for their in vivo antithrombotic activity. Among 20 compounds tested, the compound 12b showed the most promising antithrombotic activity which was comparable with clinically used aspirin or warfarin, but, at variance with these standard drugs, 12b did not exhibit the increased bleeding time, suggesting its potential as a novel antithrombotic agent. (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis of 2-acyl-1-naphthols by gold-catalyzed oxidative cyclization of 2-alkenylphenyl alkynyl ketones
摘要:
The gold(I)-catalyzed oxidative cyclization of 2-alkenylphenyl alkynyl ketones employing organic oxides as oxidants has been developed. This reaction involves aromatization to furnish 2-acyl-1-naphthols. Also, 10-acyl-9-phenanthrenols are analogously produced from the reaction of allcynyl 2-biphenyl ketones. (C) 2014 Elsevier Ltd. All rights reserved.
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 -
Unusual Reaction of 6-Formyl-2-oxo-2H-benzo[h]chromene-3-carboxylic Acid Ethyl Ester with Aliphatic Amines
作者:Koneni V. Sashidhara、Jammikuntla N. Rosaiah、Abdhesh Kumar
DOI:10.1080/00397910902916056
日期:2009.12.15
The unusual reaction of coumarone systems when exposed to aliphatic amines is described. The stability and formation of these compounds is discussed with respect to its substituents at para position, and it was found that the para substituents have no role to play.
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.
Novel coumarin derivatives as potential antidyslipidemic agents
作者:Koneni V. Sashidhara、Abdhesh Kumar、Manoj Kumar、Ravi Sonkar、Gitika Bhatia、A.K. Khanna
DOI:10.1016/j.bmcl.2010.05.023
日期:2010.7
A series of novel benzocoumarin derivatives were synthesized and evaluated for their in vivo antidyslipidemic and in vitro antioxidant activities. Among 11 compounds tested, 2 compounds showed potent antidyslipidemic activity and 3 compounds showed potent antioxidant activity. (C) 2010 Elsevier Ltd. All rights reserved.
Structure and ring-chain tautomerism of 2-hydroxy-5-methyl-3,4-benzocinnamaldehyde
作者:I. M. Andreeva、E. M. Bondarenko、E. A. Medyantseva、R. G. Pudeyan、V. I. Minkin