- Solvent-free sonochemical kabachnic-fields reaction to synthesize some new α-aminophosphonates catalyzed by nano-BF3?SiO2
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To obtain a rapid, efficient synthesis of some new α-aminophosphonates, ultrasonic irradiation has been applied to the reaction mixtures containing amine, aromatic or heteroaromatic aldehydes and triethyl phosphite. The Kabachnik-Fields reaction was performed by using nano-BF3?SiO2 as a recyclable catalyst under solvent free conditions. Key advantages of this procedure consist in the eco-friendly and highly efficient reaction conditions, high yields, an easy work-up procedure, short reaction times and solvent free conditions. All title compounds were characterized by spectral and elemental analysis. They were further screened for their in vitro antioxidant activity by the DPPH, O2? and NO methods. The majority of the title compounds showed good antioxidant activity when compared with the standard antioxidants.
- Ravikumar,Mohan,Subramanyam, Ch.,Rao, K. Prasada
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Read Online
- COLLAGEN 1 TRANSLATION INHIBITORS AND METHODS OF USE THEREOF
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The present invention relates to novel collagen translation inhibitors 1, a composition, their preparation methods, and their uses for the treatment of fibrosis in particular, fibrosis of the lung, liver, kidney, cardiac and dermal fibrosis, IPF, wound he
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- Novel synthesis of 2-Aminothiazoles via Fe(III)-Iodine-catalyzed Hantzsch-type condensation
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A novel iron-iodine catalyzed one pot synthesis of 2-aminothiazoles from methyl aryl ketones and thiourea is demonstrated. This protocol can be considered as a catalyzed version of the classical Hantzsch aminothiazole synthesis as it enables the in situ generation of α-iodoketones in the reaction medium using catalytic amount of iodine leading to Hantzsch condensation with thiourea. The supply of iodine for multiple catalytic cycles is ensured by using catalytic amounts of iron as it enables iodide to iodine oxidation. The generality of this protocol is also well established in this manuscript by synthesizing a variety of 2-aminothiazoles from different ketones and thiourea.
- Ujwaldev, Sankuviruthiyil M.,Harry, Nissy Ann,Neetha, Mohan,Anilkumar, Gopinathan
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supporting information
p. 646 - 653
(2020/10/20)
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- Design, synthesis and molecular modelling studies of 1-methyl-3-(4-substituted phenyl-1,3thiazol-2-yl)-2-(pyridin-3-yl)-2,3-dihydroquinazolin-4(1h)-ones as potent anticancer agents
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The present study involves the design, synthesis, characterization and molecular docking studies of biologically active quinazolin-4-ones, which were synthesized by condensing 2-amino-4-substituted phenylthiazole with N-methylbenzoxazin-4-one. The N-methylbenzoxazin-4-one and 2-amino-4-substituted phenylthiazole were synthesized from N-methylanthranilic acid and substituted ketones, respectively. The ADME properties determined the synthetic accessibility of quinazolin-4-ones by in silico Swiss ADME. The colorectal anticancer screening was done by using cell HT-29 human colorectal adenocarcinoma based on molecular docking studies on 3GC7-the structure of p38alpha in complex with dihydroquinazolinone. Finally, compounds 5Dh8, 5DF6, 5Db2 and 5Di9 exhibited better activity at a concentration 10 μg/mL when compared to 5-fluorouracil. The ADME properties revealed that all the compounds were within the range and docking studies showed the highest binding with glide score -7.19 and -7.027 Kcal/mol compared to the target protein -10.67 Kcal/mol.
- Nagaladinne, Nizamuddin,Hindustan, Abdul Ahad,Nayakanti, Devanna
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p. 3067 - 3074
(2021/01/06)
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- Design, synthesis, and biological evaluation of novel arylcarboxamide derivatives as anti-tubercular agents
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Our group has previously reported several indolecarboxamides exhibiting potent antitubercular activity. Herein, we rationally designed several arylcarboxamides based on our previously reported homology model and the recently published crystal structure of the mycobacterial membrane protein large 3 (MmpL3). Many analogues showed considerable anti-TB activity against drug-sensitive (DS) Mycobacterium tuberculosis (M. tb) strain. Naphthamide derivatives 13c and 13d were the most active compounds in our study (MIC: 6.55, 7.11 μM, respectively), showing comparable potency to the first line anti-tuberculosis (anti-TB) drug ethambutol (MIC: 4.89 μM). In addition to the naphthamide derivatives, we also identified the quinolone-2-carboxamides and 4-arylthiazole-2-carboxamides as potential MmpL3 inhibitors in which compounds 8i and 18b had MIC values of 9.97 and 9.82 μM, respectively. All four compounds retained their high activity against multidrug-resistant (MDR) and extensively drug-resistant (XDR) M. tb strains. It is worth noting that the two most active compounds 13c and 13d also exhibited the highest selective activity towards DS, MDR and XDR M. tb strains over mammalian cells [IC50 (Vero cells) ≥ 227 μM], indicating their potential lack of cytotoxicity. The four compounds were docked into the MmpL3 active site and were studied for their drug-likeness using Lipinski's rule of five.
- Alsayed, Shahinda S. R.,Beh, Chau Chun,Bishai, William R.,Foster, Neil,Gunosewoyo, Hendra,Lun, Shichun,Luna, Giuseppe,Payne, Alan D.
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p. 7523 - 7540
(2020/03/13)
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- Synthesis and Molecular Docking Studies of Some 1,2-Dimethyl-3(4-substituted phenyl-1,3-thiazol-2-yl)2,3-dihydroquinazolin-4(1H)-ones as Anticancer Agents
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Synthesis of 1, 2-dimethyl-3(4-substituted phenyl-1,3-thiazol-2-yl)2,3-dihydro quinazolin-4(1H)-ones (5Aa1-5Ak11) derivatives was effected by refluxing 1,2-dimethylbenzoxazine-4-one with different 4-substituted phenyl-1,3-thiazol-2-amines. Synthesized compounds were characterized through elemental analysis, infrared, proton nuclear magnetic resonance, and Carbon-13 nuclear magnetic resonance. Molecular docking studies were carried out using Schr?dinger Glide (version 2020_1) which was docked into selective P38alpha and Activin A Receptor Type 1 (ACVR1) Activin receptor-like kinase-2 (ALK2) kinase with Protein Data Bank (PDB) code 3GC7, 6GI6. Based on the docking score of synthesized quinazolin-4-one derivatives, co-crystallized ligands interaction was evaluated with 5-fluorouracil (5-FU) as a reference drug. Compounds 5Ae5, 5Aa1, 5Ai9, and 5Ab2 with P38alpha, 5Af6, 5Ae5, 5Ad4, and 5Ab2 with ACVR1 (ALK2) kinase score were -7.265, -7.078, -7.058, and -6.836; -8.929, -8.749, -8.735, and -8.464 Kcal/mol against enzymes responsible for cancer treatment. The results indicated that quinazolin-4-one derivatives had scored better than ligand and 5-FU.
- Nizamuddin,Ahad, Hindustan Abdul,Devanna, Nayakanti
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p. 571 - 579
(2021/02/02)
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- SUBSTITUTED PROPANAMIDES AS INHIBITORS OF NUCLEASES
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The invention provides compounds represented by the structural formula (1): wherein R1, R2, R3, R4, R5, R6 are as defined in the claims. The compounds are inhibitors of nucleases, and are useful in particular in a method of treatment and/or prevention of proliferative diseases, neurodegenerative diseases, and other genomic instability associated diseases.
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Page/Page column 11; 13; 23; 24; 38
(2019/11/12)
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- Citric Acid-catalyzed Synthesis of 2,4-Disubstituted Thiazoles from Ketones via C–Br, C–S, and C–N Bond Formations in One Pot: A Green Approach
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An improved and greener protocol has been developed for the synthesis of 2,4-disubstituted thiazoles via C–Br, C–S, and, C–N bond formations in a single step from readily available ketones, N-bromosuccinimide (NBS), and thiourea catalyzed by citric acid in a mixture of ethanol and water (3:1) under reflux conditions. This method has the advantages of freedom from the isolation of lachrymatory α-bromoketones, ease of carrying out, cleaner reaction profile, broad substrate scope, freedom from chromatographic purification, and suitability for large-scale synthesis.
- Gundala, Trivikram Reddy,Godugu, Kumar,Nallagondu, Chinna Gangi Reddy
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p. 1408 - 1416
(2017/10/23)
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- Microwave-assisted synthesis of novel N-(4-phenylthiazol-2-yl)-benzo[d]thiazole-, thiazolo[4,5-b]pyridine-, thiazolo[5,4-b]pyridine- and benzo[d]oxazole-2-carboximidamides inspired by marine topsentines and nortopsentines
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We report the synthesis of novel N-(4-phenylthiazol-2-yl)-substituted benzo[d]thiazole-, thiazolo[4,5-b]pyridine-, thiazolo[5,4-b]pyridine- and benzo[d]oxazole-2-carboximidamides, which were inspired by marine topsentines and nortopsentines. Condensation of 4,5-dichloro-1,2,3-dithiazolium chloride (Appel salt) with various ortho-halogenated anilines, aminopyridines and aminophenols gave the corresponding aryliminodithiazoles in good to excellent yields. Copper(I)-mediated or nucleophilic-assisted cyclization of aryliminodithiazoles furnished cyano-functionalized benzo[d]thiazoles, thiazolo[4,5-b]- and thiazolo[5,4-b]-pyridines and benzo[d]oxazoles. The latter were condensed with substituted 4-phenylthiazol-2-amines to furnish twenty seven new polyaromatic carboximidamides in moderate to good yields.
- Deau, Emmanuel,Dubouilh-Benard, Carole,Levacher, Vincent,Besson, Thierry
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p. 5532 - 5540
(2015/03/30)
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- Discovery of novel N-(5-(arylcarbonyl)thiazol-2-yl)amides and N-(5-(arylcarbonyl)thiophen-2-yl)amides as potent RORγt inhibitors
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Novel series of N-(5-(arylcarbonyl)thiazol-2-yl)amides and N-(5-(arylcarbonyl)thiophen-2-yl)amides were discovered as potent retinoic acid receptor-related orphan receptor-gamma-t (RORγt) inhibitors. SAR studies of the RORγt HTS hit 6a led to identification of thiazole ketone amide 8h and thiophene ketone amide 9g with high binding affinity and inhibitory activity of Th17 cell differentiation. Compound 8h showed in vivo efficacy in both mouse experimental autoimmune encephalomyelitis (EAE) and collagen induced arthritis (CIA) models via oral administration.
- Wang, Yonghui,Cai, Wei,Zhang, Guifeng,Yang, Ting,Liu, Qian,Cheng, Yaobang,Zhou, Ling,Ma, Yingli,Cheng, Ziqiang,Lu, Sijie,Zhao, Yong-Gang,Zhang, Wei,Xiang, Zhijun,Wang, Shuai,Yang, Liuqing,Wu, Qianqian,Orband-Miller, Lisa A.,Xu, Yan,Zhang, Jing,Gao, Ruina,Huxdorf, Melanie,Xiang, Jia-Ning,Zhong, Zhong,Elliott, John D.,Leung, Stewart,Lin, Xichen
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supporting information
p. 692 - 702
(2014/01/23)
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- Aminothiazole-featured pirinixic acid derivatives as dual 5-lipoxygenase and microsomal prostaglandin E2 synthase-1 inhibitors with improved potency and efficiency in vivo
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Dual inhibition of microsomal prostaglandin E2 synthase-1 (mPGES-1) and 5-lipoxygenase (5-LO) is currently pursued as potential pharmacological strategy for treatment of inflammation and cancer. Here we present a series of 26 novel 2-aminothiaz
- Hanke, Thomas,Dehm, Friederike,Liening, Stefanie,Popella, Sven-Desiderius,MacZewsky, Jonas,Pillong, Max,Kunze, Jens,Weinigel, Christina,Barz, Dagmar,Kaiser, Astrid,Wurglics, Mario,L?mmerhofer, Michael,Schneider, Gisbert,Sautebin, Lidia,Schubert-Zsilavecz, Manfred,Werz, Oliver
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supporting information
p. 9031 - 9044
(2014/01/06)
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- Design, synthesis and biological evaluation of thiazole- and indole-based derivatives for the treatment of type II diabetes
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Present studies have shown that the lipid carrier has a significant role in several aspects of metabolic syndrome in A-FABP/ap2-deficient mice, including type 2 diabetes and atherosclerosis. 38 Thiazole- and indole-based derivatives were synthesized and investigated for their inhibitory effects on the production of LPS-stimulated TNF-α. Among them, 12b exhibited an excellent inhibitory efficiency compared to BMS309403 (95% vs. 85%) at the concentration of 10 μM and a binding affinity for ap2 with the apparent Ki values 33 nM. Oral administration of 12b at a dosage of 50 mg/kg effectively reduced the levels of plasma blood glucose, triglycerides, insulin, total cholesterol and alanine aminotransferase in high-fat/diet-induced obesity model. The results highlighted that 12b was a potent anti-diabetic agent.
- Xu, Qinyuan,Huang, Li,Liu, Juan,Ma, Liang,Chen, Tao,Chen, Jinying,Peng, Fei,Cao, Dong,Yang, Zhuang,Qiu, Neng,Qiu, Jingxiang,Wang, Guangcheng,Liang, Xiaolin,Peng, Aihua,Xiang, Mingli,Wei, Yuquan,Chen, Lijuan
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- One-pot synthesis of 2-aminothiazoles in PEG-400
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A facile one-pot synthesis of 2-aminothiazoles has been carried in PEG-400 as a greener medium at room temperature. This method avoids the use of lachrymatric α-bromoketones as well as the volatile, toxic organic solvents.
- Jawale, Dhanaji V.,Lingampalle, Dinesh L.,Pratap, Umesh R.,Mane, Ramrao A.
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experimental part
p. 412 - 416
(2010/12/24)
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- PYRIMIDINEDIONE-FUSED HETEROCYCLIC COMPOUNDS AS TRPA1 MODULATORS
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The present invention is related to novel pyrimidinedione-fused heterocyclic compounds as TRPA (Transient Receptor Potential subfamily A) modulators. In particular, compounds described herein are useful for treating or preventing diseases, conditions and/or disorders modulated by TRPA1 (Transient Receptor Potential subfamily A, member 1). Also provided herein are processes for preparing compounds described herein, intermediates used in their synthesis, pharmaceutical compositions thereof, and methods for treating or preventing diseases, conditions and/or disorders modulated by TRPA1.
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Page/Page column 47
(2010/11/17)
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- Efficient and expeditious synthesis of di- and trisubstituted thiazoles in PEG under catalyst-free conditions
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An efficient and expeditious catalyst-free protocol was developed for the construction of di- and trisubstituted thiazoles from -haloketones and thioureas/thioamides in PEG. The reaction was carried out at ambient temperature, and the products were obtained in excellent isolated yields (91-98%). Additionally, PEG could be recovered easily and was reused without evident loss in activity.
- Zhu, Dongjian,Chen, Jiuxi,Xiao, Huilong,Liu, Miaochang,Ding, Jinchang,Wu, Huayue
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experimental part
p. 2895 - 2906
(2009/12/03)
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- QUINAZOLINEDIONE DERIVATIVES AS TRPA1 MODULATORS
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The present invention provides Quinazolinedione derivatives as TRPA (Transient Receptor Potential subfamily A) modulators. In particular, compounds described herein are useful for treating or preventing diseases, conditions and/or disorders modulated by T
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Page/Page column 17
(2010/01/31)
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- PHTHALIMIDE DERIVATIVES AS TRPA1 MODULATORS
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The present invention provides TRPA (Transient Receptor Potential subfamily A) modulators. In particular, compounds described herein are useful for treating or preventing diseases, conditions and/or disorders modulated by TRPAl (Transient Receptor Potential subfamily A, member 1) modulators. Also provided herein are processes for preparing compounds described herein, intermediates used in their synthesis, pharmaceutical compositions thereof, and methods for treating or preventing diseases, conditions and/or disorders modulated by TRPAl.
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(2009/10/22)
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- THIAZOLE AND THIADIAZOLE COMPOUNDS FOR INFLAMMATION AND IMMUNE-RELATED USES
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The invention relates to compounds of structural formula (I) or a pharmaceutically acceptable salt, solvate, clathrate, or prodrug thereof, wherein R'i, X, X', L and Y are defined herein. These compounds are useful as immunosuppressive agents and for treating and preventing inflammatory conditions, allergic disorders, and immune disorders.
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Page/Page column 94
(2010/11/28)
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- UREA DERIVATIVES METHODS FOR THEIR MANUFACTURE AND USES THEREOF
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The present invention provides compounds of formula (I): in which R 1, R'1, R2, R'2, R3, Y and G have the meanings given in the description, to a process for their preparation, their application by way of medicaments, and to pharmaceutical compositions containing them.
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Page/Page column 55-56
(2010/11/24)
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- NF-KB ACTIVATION INHIBITORS
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A medicament having inhibitory activity against NF-κB activation which comprises as an active ingredient a substance selected from the group consisting of a compound represented by the following general formula (I) and a pharmacologically acceptable salt thereof, and a hydrate thereof and a solvate thereof: wherein A represents hydrogen atom or acetyl group, E represents a 2,5-di-substituted or a 3,5-di-substituted phenyl group, or a monocyclic or a fused polycyclic heteroaryl group which may be substituted, provided that the compound wherein said heteroaryl group is 1○ a fused polycyclic heteroaryl group wherein the ring which binds directly to ―CONH― group in the formula (I) is a benzene ring, 2○ unsubstituted thiazol-2-yl group, or 3○ unsubstituted benzothiazol-2-yl group is excluded, ring Z represents an arene which may have one or more substituents in addition to the group represented by formula ―O―A wherein A has the same meaning as that defined above and the group represented by formula -CONH-E wherein E has the same meaning as that defined above, or a heteroarene which may have one or more substituents in addition to the group represented by formula ―O―A wherein A has the same meaning as that defined above and the group represented by formula ― CONH―E wherein E has the same meaning as that defined above.
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Page/Page column 122
(2008/06/13)
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- THERAPEUTIC AGENT FOR CANCER
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A medicament for the prevention and/or treatment of cancers and the like which comprises as an active ingredient a substance selected from the group consisting of a compound represented by the following general formula (I) and a pharmacologically acceptable salt thereof, and a hydrate thereof and a solvate thereof: wherein A represents hydrogen atom or acetyl group, E represents a 2,5-di-substituted or a 3,5-di-substituted phenyl group, or a monocyclic or a fused polycyclic heteroaryl group which may be substituted, provided that the compound wherein said heteroaryl group is 1? a fused polycyclic heteroaryl group wherein the ring which binds directly to ―CONH― group in the formula (I) is a benzene ring, 2? unsubstituted thiazol-2-yl group, or 3? unsubstituted benzothiazol-2-yl group is excluded, ring Z represents an arene which may have one or more substituents in addition to the group represented by formula ―O―A wherein A has the same meaning as that defined above and the group represented by formula ―CONH―E wherein E has the same meaning as that defined above, or a heteroarene which may have one or more substituents in addition to the group represented by formula ―O―A wherein A has the same meaning as that defined above and the group represented by formula ― CONH―E wherein E has the same meaning as that defined above.
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Page/Page column 122
(2010/02/11)
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- REMEDIES FOR NEURODEGENERATIVE DISEASES
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A medicament for preventive and/or therapeutic treatment of neurodegenerative diseases such as Alzheimer's disease or the like which comprises as an active ingredient a substance selected from the group consisting of a compound represented by the following general formula (I) and a pharmacologically acceptable salt thereof, and a hydrate thereof and a solvate thereof: wherein A represents hydrogen atom or acetyl group, E represents a 2,5-di-substituted or a 3,5-di-substituted phenyl group, or a monocyclic or a fused polycyclic heteroaryl group which may be substituted, provided that the compound wherein said heteroaryl group is 1○ a fused polycyclic heteroaryl group wherein the ring which binds directly to -CONH- group in the formula (I) is a benzene ring, 2○ unsubstituted thiazol-2-yl group, or 3○ unsubstituted benzothiazol-2-yl group is excluded, ring Z represents an arene which may have one or more substituents in addition to the group represented by formula -O-A wherein A has the same meaning as that defined above and the group represented by formula -CONH-E wherein E has the same meaning as that defined above, or a heteroarene which may have one or more substituents in addition to the group represented by formula -O-A wherein A has the same meaning as that defined above and the group represented by formula -CONH-E wherein E has the same meaning as that defined above.
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Page/Page column 121
(2010/02/12)
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- INHIBITORS AGAINST THE ACTIVATION OF AP-1 AND NFAT
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A medicament inhibiting the activation of AP-1 which comprises as an active ingredient a substance selected from the group consisting of a compound represented by the following general formula (I) and a pharmacologically acceptable salt thereof, and a hydrate thereof and a solvate thereof: wherein X represents a connecting group whose number of atoms in the main chain is 2 to 5 (said connecting group may be substituted), A represents hydrogen atom or acetyl group, E represents an aryl group which may be substituted or a hetero aryl group which may be substituted, ring Z represents an arene which may have one or more substituents in addition to the group represented by formula -O-A wherein A has the same meaning as that defined above and the group represented by formula -X-E wherein each of X and E has the same meaning as that defined above, or a heteroarene which may have one or more substituents in addition to the group represented by formula -O-A wherein A has the same meaning as that defined above and the group represented by formula -X-E wherein each of X and E has the same meaning as that defined above.
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Page/Page column 195
(2008/06/13)
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- Synthesis and fungicidal activity of 2-imino-3-(4-arylthiazol-2-yl)- thiazolidin-4-ones and their 5-arylidene derivatives
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Five derivatives of 2-imino-3-(4-arylthiazol-2-yl)-thiazolidin-4-ones and a series of their 5-arylidene derivatives have been synthesized and tested for antifungal activity against seven agricultural fungi. 2-Imino-3-(2,4-dichloro-5- fluorophenylthiazol-2-yl)-4-thiazolidi-none and 2-imino-3-(2,4- dichlorophenylthiazol-2-yl)-4-thiazolidione, both of them new compounds, exhibited higher fungicidal effects than the other compounds prepared.
- Liu, Hui-Ling,Li, Zongcheng,Anthonsen, Thorleif
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p. 1055 - 1061
(2007/10/03)
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