- Solvent-free synthesis, spectral correlations and antimicrobial activities of some aryl e 2-propen-1-ones
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Totally 38 aryl E 2-propen-1-ones including nine substituted styryl 4-iodophenyl ketones have been synthesised using solvent-free SiO 2-H3PO4 catalyzed Aldol condensation between respective methyl ketones and substituted benzaldehydes under microwave irradiation. The yields of the ketones are more than 80%. The synthesised chalcones were characterized by their analytical, physical and spectroscopic data. The spectral frequencies of synthesised substituted styryl 4-iodophenyl ketones have been correlated with Hammett substituent constants, F and R parameters using single and multi-linear regression analysis. The antimicrobial activities of 4-iodophenyl chalcones have been studied using Bauer-Kirby method.
- Sathiyamoorthi,Mala,Sakthinathan,Kamalakkannan,Suresh,Vanangamudi,Thirunarayanan
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p. 245 - 256
(2013/11/06)
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- Preheated fly-ash catalyzed aldol condensation: Efficient synthesis of chalcones and antimicrobial activities of some 3-thienyl chalcones
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In the present study we have prepared a series of some chalcones using solvent - free Aldol - condensation by microwave irradiation. The yields of the ketones are more than 60%. The synthesised chalcones were characterized by their analytical, physical and spectral data. The antimicrobial activities of substituted styryl 3-thienyl ketones have been studied using Bauer-Kirby method.
- Arulkumaran, Ranganathan,Vijayakumar, Sambandhamoorthy,Sakthinathan, S. Pazhanivel,Kamalakkannan, Dakshnamoorthy,Ranganathan, Kaliyaperumal,Suresh, Ramamoorthy,Sundararajan, Rajasekaran,Vanangamudi, Ganesan,Thirunarayanan, Ganesamoorthy
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p. 1684 - 1690
(2013/09/24)
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- 2-(3-oxo-1,3-diphenylpropyl)malonic acids as potent allosteric ligands of the PIF pocket of phosphoinositide-dependent kinase-1: Development and prodrug concept
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The protein kinase C-related kinase 2 (PRK2)-interacting fragment (PIF) pocket of phosphoinositide-dependent kinase-1 (PDK1) was proposed as a novel target site for allosteric modulators. In the present work, we describe the design, synthesis, and structure-activity relationship of a series of 2-(3-oxo-1,3-diphenylpropyl)malonic acids as potent allosteric activators binding to the PIF pocket. Some congeners displayed AC50 values for PDK1 activation in the submicromolar range. The potency of the best compounds to stabilize PDK1 in a thermal stability shift assay was in the same order of magnitude as that of the PIF pocket binding peptide PIFtide, suggesting comparable binding affinities to the PIF pocket. The crystal structure of PDK1 in complex with compound 4h revealed that additional ionic interactions are mainly responsible for the increased potency compared to the monocarboxylate analogues. Notably, several compounds displayed high selectivity for PDK1. Employing a prodrug strategy, we were able to corroborate the novel mechanism of action in cells.
- Wilhelm, Adriana,Lopez-Garcia, Laura A.,Busschots, Katrien,Fr?hner, Wolfgang,Maurer, Frauke,Boettcher, Stefan,Zhang, Hua,Schulze, J?rg O.,Biondi, Ricardo M.,Engel, Matthias
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supporting information
p. 9817 - 9830
(2013/01/16)
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- Fly-ash:H2SO4 catalyzed solvent free efficient synthesis of some aryl chalcones under microwave irradiation
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Some 2E aryl chalcones have been synthesized using greener catalyst Fly-ash:H2SO4 assisted solvent free environmentally benign Crossed-Aldol reaction. The yields of chalcones are more than 90%. The synthesized chalcones are characterized by their physical constants and spectral data.
- Thirunarayanan,Mayavel,Thirumurthy
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experimental part
p. 18 - 22
(2012/05/05)
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- ALLOSTERIC PROTEIN KINASE MODULATORS
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The invention provides specific small molecule compounds that allosterically regulate the activity or modulate protein-protein interactions of AGC protein kinases and the Aurora family of protein kinases, methods for their production, pharmaceutical compositions comprising same, and their use for preparing medicaments for the treatment and prevention of diseases related to abnormal activities of AGC protein kinases or of protein kinases of the Aurora family.
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Page/Page column 53
(2012/03/10)
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- ALLOSTERIC PROTEIN KINASE MODULATORS
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The invention provides specific small molecule compounds that allosterically regulate the activity or modulate protein-protein interactions of AGC protein kinases and the Aurora family of protein kinases, methods for their production, pharmaceutical compositions comprising same, and their use for preparing medicaments for the treatment and prevention of diseases related to abnormal activities of AGC protein kinases or of protein kinases of the Aurora family.
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Page/Page column 110
(2010/04/30)
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- Synthesis and screening of a combinatorial library of naphthalene substituted chalcones: Inhibitors of leukotriene B4
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A combinatorial mini library of naphthalene substituted chalcones has been prepared by solution phase chemistry. Screening of these mixtures for leukotriene B4 inhibitory activity using human whole blood assay (HWBL) afforded a lead compound, 1
- Deshpande, Anil M.,Argade, Narshinha P.,Natu, Arvind A.,Eckman, Joseph
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p. 1237 - 1240
(2007/10/03)
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- Substituent Effects on Carbonyl Stretching Frequency of β-Naphthyl Styryl Ketones
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The s-cis carbonyl stretching frequencies of two series of substituted β-naphthyl styryl ketones have been measured in chloroform and carbon tetrachloride.One series contains substituents in benzene ring (Series-A) and the other contains substituents in naphthalene ring (Series-B).Substituent effects have been analysed in terms of Hammett equation.Good correlations have been obtained with ?p(+) constants in both the solvents.The low ρ-value for Series-A as compared to that of chalcones is explained on the basis of non-coplanarity of the styryl group and the carbonyl group in the ketones of Series-A.
- Rajasekaran, K.,Gnanasekaran, C.
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