- BICYCLIC PYRIDINES AND ANALOGS AS SIRTUIN MODULATORS
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Provided herein are novel sirtuin-modulating compounds and methods of use thereof. The sirtuin-modulating compounds may be used for increasing the lifespan of a cell, and treating and/or preventing a wide variety of diseases and disorders including, for example, diseases or disorders related to aging or stress, diabetes, obesity, neurodegenerative diseases, cardiovascular disease, blood clotting disorders, inflammation, cancer, and/or flushing as well as diseases or disorders that would benefit from increased mitochondrial activity. Also provided are compositions comprising a sirtuin-modulating compound in combination with another therapeutic agent.
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Page/Page column 93-94
(2011/06/16)
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- Preparation of Triazolopyrimidines as Potential Antiasthma Agents
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With the use of the human basophil histamine release assay, 5-aryl-2-aminotriazolopyrimidines were found to be active as mediator release inhibitors.These compounds were prepared by reacting arylamidines with sodium ethyl formylacetate or with ethyl propiolate to give pyrimidinones.Treatment with phosphorus oxychloride gave a chloropyrimidine, which was converted to a hydrazinopyrimidine with hydrazine.Cyclization, using cyanogen bromide, gave the triazolopyrimidines, after a Dimroth rearrangement.Following a structure-activity evaluation, the5--2-amino (8-10), 5-(3-bromophenyl)-2-amino (8-13), 5--2-amino (8-11), and 5-(4-pyridinyl)-2-amino (6-7) compounds were found to have the best activity.They were chosen for further pharmacological and toxicological study.
- Medwid, Jeffrey B.,Paul, Rolf,Baker, Jannie S.,Brockman, John A.,Du, Mila T.,et al.
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p. 1230 - 1241
(2007/10/02)
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- SUBSTITUENT EFFECTS ON THE pKa VALUES OF META- AND PARA-SUBSTITUTED BENSAMIDINIUM IONS
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The pKa values of nine para-substituted derivatives of benzamidine (-NH2, -OH, -OCH3, -CH3, -F, -Cl, -Br, -COOC2H5 and -NO2), as well as four meta-substituted derivatives (-NH2, -CH3, -F, and -NO2), were measured by U.V. difference spectroscopy.The pKa values were interpreted in terms of the resonance structures and a strong correlation between the pKa values and the Hammett ? values of the substituent groups was obtained, with ρ = 1.41 +/- 0.08.The field effects of the substituent groups on the pKa values were calculated using the Kirkwood-Westheimer theory: a very small effect was found in the compounds studied.On the other hand, a strong correlation was observed between the pKa values and the charge densities at the central atom of the substituent groups, as calculated by molecular orbital theory.The analysis of these data suggests that the intramolecular charge transfer is an important factor in the consideration of the mechanism by which the substituent groups affect the pKa values.
- Rogana, Edyr,Nelson, David L.,Leite, Luiz F. F.,Mares-Guia, Marcos
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p. 2963 - 2975
(2007/10/02)
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