- Photoluminescent report on red light emitting europium(III) complexes with heterocyclic acid
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Five luminescent europium (III) carboxylate complexes have been synthesized by using ligand 3-isopropylpyrazole-5-carboxylic acid as primary ligand and 4,4’-dimethyl-2,2’-bipyridyl, 2,2’-bipyridyl, 5,6-dimethyl-1,10-phenanthroline and 1,10-phenanthroline as secondary ligands and characterized through various techniques. These complexes exhibit excellent thermal stability and characteristic europium centered photoemission spectra under the excitation of ultraviolet light. Luminescence decay curves, Judd–Ofelt analysis, internal quantum efficiency and energy transfer mechanism have also been discussed. The color coordinates and color purity are calculated to investigate red emission of the complexes. The study results reveal that these complexes can be potentially used as red light emitting materials in various optoelectronic devices.
- Dhankhar, Priyanka,Bedi, Manisha,Khanagwal, Jyoti,Taxak, Vinod B.,Khatkar, Satyender P.,Doon, Priti Boora
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Read Online
- APELIN RECEPTOR AGONISTS AND METHODS OF USE THEREOF
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Provided herein are agonists of the apelin receptor for the treatment of disease. The compounds disclosed herein are useful for the treatment of a range of cardiovascular, renal and metabolic conditions.
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Paragraph 0500-0502
(2019/02/25)
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- Design, synthesis and biological evaluation of 1H-pyrazole-5-carboxamide derivatives as potential fungicidal and insecticidal agents
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A series of novel 1H-pyrazole-5-carboxamide compounds containing the phenyl thiazole moiety were designed and synthesized by a facile method, and their structures were characterized by 1H NMR, mass spectrometry and elemental analysis. Bioassay results showed that most of the title compounds showed potent fungicidal activities against Erysiphe graminis and insecticidal activity against Aphis fabae. Especially, compound 9b has EC50 values of 3.04 mg/L against Erysiphe graminis, of which the fungicidal activity is better than that of the commercial fungicide Thifluzamide and Azoxystrobinare; compound 9l has LC50 values of 3.81 mg/L against Aphis fabae, which was comparable with the commercial insecticide Tolfenpyrad. It is suggested that 1H-pyrazole-5-carboxamide compounds containing the phenyl thiazole moiety could be considered as a precursor structure for further design of pesticides. Graphical Abstract: A series of novel 1H-pyrazole-5-carboxamide compounds containing the phenyl thiazole moiety were designed and synthesized by a facile method, and their structures were characterized by 1H NMR, mass spectrometry and elemental analysis. Bioassay results showed that most of the title compounds showed potent fungicidal activities against Erysiphe graminis and insecticidal activity against Aphis fabae. Especially, compound 9b has EC50 values of 3.04 mg/L against Erysiphe graminis, of which the fungicidal activity is better than that of the commercial fungicide Thifluzamide and Azoxystrobinare; compound 9l has LC50 values of 3.81 mg/L against Aphis fabae, which was comparable with the commercial insecticide Tolfenpyrad. It is suggested that 1H-pyrazole-5-carboxamide compounds containing the phenyl thiazole moiety could be considered as a precursor structure for further design of pesticides.[Figure not available: see fulltext.]
- Huang, Danling,Huang, Mingzhi,Liu, Weidong,Liu, Aiping,Liu, Xingping,Chen, Xiaoyang,Pei, Hui,Sun, Jiong,Yin, Dulin,Wang, Xiaoguang
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p. 2053 - 2061
(2017/09/30)
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- TRICYCLIC GUANIDINE DERIVATIVE
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Disclosed are compounds useful as inhibitors of Phosphodiesterase 1 (PDE1), compositions thereof, and methods of using the same.
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Paragraph 0293; 0295
(2016/04/19)
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- COMPOUNDS AS HEPATITIS C INHIBITORS AND USES THEREOF IN MEDICINE
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Provided herein are compounds as hepatitis C inhibitors and uses thereof in medicine. Specifically, provided herein is a compound of Formula (I) or a stereoisomer, a tautomer, an enantiomer, an N-oxide, a hydrate, a solvate, a metabolite, a pharmaceutically acceptable salt or a prodrug thereof, which can be used for treating HCV infection or hepatitis C diseases. Also provided herein are a pharmaceutically acceptable composition containing such compound and a method of treating HCV infection or hepatitis C diseases comprising administering the compound or pharmaceutical composition thereof disclosed herein.
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Paragraph 00201
(2016/09/22)
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- Design, synthesis and biological activity of novel substituted pyrazole amide derivatives targeting EcR/USP receptor
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In order to discover highly active ecdysone analogs, a series of new substituted pyrazole amide derivatives were obtained using structure-guided optimization method and further screened for their insecticidal activities, in the basis of the core structures of the two active compounds N-(3-methoxyphenyl)-3-(tert-butyl)-1-phenyl-1H-pyrazole-5-carboxamide (6e) and N-(4-(tert-butyl)phenyl)-3-(tert-butyl)-1-phenyl-1H-pyrazole-5-carboxamide (6i), previously presented by us. The chemical structures of the title compounds were identified by spectral analyses. The preliminary bioassay results indicated that one among the synthesized pyrazole derivatives, compound 34, endowed with good activity against Mythimna Separata at 10 mg/L, which was equal to that displayed by the positive control tebufenozide. In addition, examples of molecular docking and molecular dynamics studies demonstrated that 34 may be the potential inhibitor to EcR and its docking conformation was similar to that of tebufenozide. In addition, increasing the hydrophobic effect and considering the suitable bulk effect on pyrazole ring are beneficial to the inhibiting activity to EcR and activity in vivo.
- Deng, Xi-Le,Xie, Jin,Li, Yong-Qiang,Yuan, De-Kai,Hu, Xue-Ping,Zhang, Li,Wang, Qing-Min,Chi, Ming,Yang, Xin-Ling
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supporting information
p. 566 - 570
(2016/04/26)
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- A new class of non-thiazolidinedione, non-carboxylic-acid-based highly selective peroxisome proliferator-activated receptor (PPAR) γ agonists: Design and synthesis of benzylpyrazole acylsulfonamides
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Herein, we describe the design, synthesis, and structure-activity relationships of novel benzylpyrazole acylsulfonamides as non-thiazolidinedione (TZD), non-carboxylic-acid-based peroxisome proliferator-activated receptor (PPAR) γ agonists. Docking model analysis of in-house weak agonist 2 bound to the reported PPARγ ligand binding domain suggested that modification of the carboxylic acid of 2 would help strengthen the interaction of 2 with the TZD pocket and afford non-carboxylic-acid-based agonists. In this study, we used an acylsulfonamide group as the ring-opening analog of TZD as an isosteric replacement of carboxylic acid moiety of 2; further, preliminary modification of the terminal alkyl chain on the sulfonyl group gave the lead compound 3c. Subsequent optimization of the resulting compound gave the potent agonists 25c, 30b, and 30c with high metabolic stability and significant antidiabetic activity. Further, we have described the difference in binding mode of the carboxylic-acid-based agonist 1 and acylsulfonamide 3d.
- Rikimaru, Kentaro,Wakabayashi, Takeshi,Abe, Hidenori,Imoto, Hiroshi,Maekawa, Tsuyoshi,Ujikawa, Osamu,Murase, Katsuhito,Matsuo, Takanori,Matsumoto, Mitsuharu,Nomura, Chisako,Tsuge, Hiroko,Arimura, Naoto,Kawakami, Kazutoshi,Sakamoto, Junichi,Funami, Miyuki,Mol, Clifford D.,Snell, Gyorgy P.,Bragstad, Kenneth A.,Sang, Bi-Ching,Dougan, Douglas R.,Tanaka, Toshimasa,Katayama, Nozomi,Horiguchi, Yoshiaki,Momose, Yu
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experimental part
p. 714 - 733
(2012/03/10)
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- Discovery of pyrazole carboxylic acids as potent inhibitors of rat long chain l-2-hydroxy acid oxidase
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Long chain l-2-hydroxy acid oxidase 2 (Hao2) is a peroxisomal enzyme expressed in the kidney and the liver. Hao2 was identified as a candidate gene for blood pressure (BP) quantitative trait locus (QTL) but the identity of its physiological substrate and its role in vivo remains largely unknown. To define a pharmacological role of this gene product, we report the development of selective inhibitors of Hao2. We identified pyrazole carboxylic acid hits 1 and 2 from screening of a compound library. Lead optimization of these hits led to the discovery of 15-XV and 15-XXXII as potent and selective inhibitors of rat Hao2. This report details the structure activity relationship of the pyrazole carboxylic acids as specific inhibitors of Hao2.
- Barawkar, Dinesh A.,Bandyopadhyay, Anish,Deshpande, Anil,Koul, Summon,Kandalkar, Sachin,Patil, Pradeep,Khose, Goraksha,Vyas, Samir,Mone, Mahesh,Bhosale, Shubhangi,Singh, Umesh,De, Siddhartha,Meru, Ashwin,Gundu, Jayasagar,Chugh, Anita,Palle, Venkata P.,Mookhtiar, Kasim A.,Vacca, Joseph P.,Chakravarty, Prasun K.,Nargund, Ravi P.,Wright, Samuel D.,Roy, Sophie,Graziano, Michael P.,Cully, Doris,Cai, Tian-Quan,Singh, Sheo B.
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scheme or table
p. 4341 - 4347
(2012/07/17)
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- New analogues of (E)-β-farnesene with insecticidal activity and binding affinity to aphid odorant-binding proteins
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(E)-β-Farnesene is a strong and efficient alarm pheromone in most aphid species. However, applications in agriculture are prevented by its relatively high volatility, its susceptibility to oxidation and its complex and expensive synthesis. To develop novel compounds for aphid control, we have designed and synthesized analogues of (E)-β-farnesene, containing a pyrazole moiety present in several insecticides. Their structures have been confirmed by 1H NMR, elemental analysis, high-resolution mass spectroscopy and IR. Binding activities to three odorant-binding proteins (OBPs) of the pea aphid Acythosiphon pisum have been evaluated and correlated with their structures with reference to (E)-β-farnesene. Several derivatives were shown both to bind to A. pisum OBPs with a specificity similar to that of (E)-β-farnesene and to have aphicidal activity comparable to that of thiacloprid, a commercial insecticide. The compounds synthesized in this work represent new potential agents for aphid population control and provide guidelines to design analogues of (E)-β-farnesene endowed with both insecticidal and repellent activity for aphids.
- Sun, Yufeng,Qiao, Huili,Ling, Yun,Yang, Shaoxiang,Rui, Changhui,Pelosi, Paolo,Yang, Xinling
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experimental part
p. 2456 - 2461
(2011/10/12)
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- The discovery of potent, selective, and orally bioavailable PDE9 inhibitors as potential hypoglycemic agents
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Starting from a non-selective pyrazolo-pyrimidone lead, the sequential use of parallel medicinal chemistry and directed synthesis led to the discovery of potent, highly selective, and orally bioavailable PDE9 inhibitors. The availability of these tools allowed for a thorough evaluation of the therapeutic potential of PDE9 inhibition.
- DeNinno, Michael P.,Andrews, Melissa,Bell, Andrew S.,Chen, Yue,Eller-Zarbo, Cynthia,Eshelby, Nan,Etienne, John B.,Moore, Dianna E.,Palmer, Michael J.,Visser, Michael S.,Yu, Li J.,Zavadoski, William J.,Michael Gibbs
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supporting information; experimental part
p. 2537 - 2541
(2009/12/25)
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- PYRROLOTRIAZINE KINASE INHIBITORS
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The present invention provides compounds of formula I and pharmaceutically acceptable salts thereof. The formula I compounds inhibit tyrosine kinase activity of Trk receptors such as TrkA, TrkB, TrkC or Flt-3 thereby making them useful as antiproliferative agents.
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Page/Page column 10
(2008/06/13)
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- Agonist lead identification for the high affinity niacin receptor GPR109a
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A strategy for lead identification of new agonists of GPR109a, starting from known compounds shown to activate the receptor, is described. Early compound triage led to the formulation of a binding hypothesis and eventually to our focus on a series of pyrazole acid derivatives. Further elaboration of these compounds provided a series of 5,5-fused pyrazoles to be used as lead compounds for further optimization.
- Gharbaoui, Tawfik,Skinner, Philip J.,Shin, Young-Jun,Averbuj, Claudia,Jung, Jae-Kyu,Johnson, Benjamin R.,Duong, Tracy,Decaire, Marc,Uy, Jane,Cherrier, Martin C.,Webb, Peter J.,Tamura, Susan Y.,Zou, Ning,Rodriguez, Nathalie,Boatman, P. Douglas,Sage, Carleton R.,Lindstrom, Andrew,Xu, Jerry,Schrader, Thomas O.,Smith, Brian M.,Chen, Ruoping,Richman, Jeremy G.,Connolly, Daniel T.,Colletti, Steven L.,Tata, James R.,Semple, Graeme
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p. 4914 - 4919
(2008/02/12)
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- Fluorinated pyrazole acids are agonists of the high affinity niacin receptor GPR109a
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A series of 5-alkyl pyrazole-3-carboxylic acids were prepared and found to act as potent and selective agonists of the human GPCR, GPR109a, the high affinity nicotinic acid receptor. No activity was observed at the highly homologous low affinity niacin receptor, GPR109b. A further series of 4-fluoro-5-alkyl pyrazole-3-carboxylic acids were shown to display similar potency. One example from the series was shown to have improved properties in vivo compared to niacin.
- Skinner, Philip J.,Cherrier, Martin C.,Webb, Peter J.,Shin, Young-Jun,Gharbaoui, Tawfik,Lindstrom, Andrew,Hong, Vu,Tamura, Susan Y.,Dang, Huong T.,Pride, Cameron C.,Chen, Ruoping,Richman, Jeremy G.,Connolly, Daniel T.,Semple, Graeme
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p. 5620 - 5623
(2008/04/02)
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- PDE9 inhibitors for treating type 2 diabetes,metabolic syndrome, and cardiovascular disease
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The invention provides compounds of Formula (I) the stereoisomers and prodrugs thereof, and the pharmaceutically acceptable salts of the compounds, stereoisomers, and prodrugs, wherein A, P, J, x, and R10 are as defined herein; pharmaceutical compositions thereof; and methods of using the pharmaceutical compositions for the treatment of diseases, including, diabetes, including type 1 and type 2 diabetes, hyperglycemia, dyslipidemia, impaired glucose tolerance, metabolic syndrome, and/or cardiovascular disease.
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- Positive allosteric modulators of the nicotinic acetylcholine receptor
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The invention provides compounds of Formula I: These compounds may be in the form of pharmaceutical salts or compositions, may be in pure enantiomeric form or racemic mixtures, and are useful in pharmaceuticals used to treat diseases or conditions in which α7 nAChR is known to be involved.
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- Synthesis of Highly Functionalized Cyclobutene Derivatives
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Protonation of the reactive 1:1 intermediates produced in the reaction between triphenyl-phosphine and dialkyl acetylenedicarboxylates with CH-acids, such as ethyl 2,4-dioxo-hexanoate and ethyl 2,4-dioxo-5-methylhexanoate, lead to vinyltriphenylphosphonium salts, which undergo an intra-molecular Wittig reaction to produce cyclobutene derivatives in fairly high yields.
- Yavari, Issa,Bayat, Mohammad
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p. 1221 - 1227
(2007/10/03)
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- PDE9 inhibitors for treating cardiovascular disorders
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The invention relates to PDE9 inhibitors for treating cardiovascular disorders. Preferred PDE9 inhibitors are compounds of formula I wherein R1 is H or C1-6 alkyl, wherein R1 is attached to either N1 or N2; R2 is C1-6 alkyl optionally substituted by hydroxy or alkoxy; C3-7 cycloalkyl optionally substituted by alkyl, hydroxy or alkoxy; a saturated 5-6-membered heterocycle optionally substituted by alkyl, hydroxy or alkoxy; het1 or Ar1; R3 is C1-6 alkyl optionally substituted by 1 or 2 groups independently selected from: Ar2; C3-7cycloalkyl optionally substituted by C1-6alkyl; OAr2; SAr2; NHC(O)C1-6 alkyl; het2; xanthene; and naphthalene.
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- Substituted 1,2,4-triazolo[3,4-a]phthalazine derivatives as GABA alpha 5 ligands
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Substituted 1,2,4-Triazolo[3,4-A]phthalazine derivatives are GABA Alpha 5 ligands and are represented by the formula
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- Regioselective syntheses of 3-aminomethyl-5-substituted isoxazoles: A facile and chemoselective reduction of azide to amino by sodium borohydride using 1,3-propanedithiol as a catalyst
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A series of isoxazole azides were reduced selectively to isoxazole amines in quantitative yield by sodium borohydride using 1,3-propanedithiol as a catalyst.
- Pei,Wickhan
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p. 7509 - 7512
(2007/10/02)
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