- Novel series of benzo[d]thiazolyl substituted-2-quinolone hybrids: Design, synthesis, biological evaluation and in-silico insights
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A novel series of 3-(2-(4-(substituted-benzo[d]thiazol-2-yl)phenylamino)acetyl)-4?hydroxy-1-methyl/phenyl quinolin-2(1H)-one (7a-f and 8a-f) were synthesized. Reaction of appropriately substituted-2-(4-amino phenyl)benzo[d]thiazole (4a-f) with 3-(2-bromoacetyl)-4?hydroxy-1-methyl/phenyl quinolin-2(1H)-one (5/6) in the presence of glacial acetic acid resulted in desired compounds. Structures of the synthesized compounds were characterized based on their spectral (IR, 1H NMR, 13C NMR and MS) and elemental analysis. The cytotoxicity screening studies revealed that MCF-7 and WRL68 cancer cells were sensitive to all the tested compounds. Out of twelve novel hybrids, compound 8f displayed the most significant anticancer activity. Docking studies were performed in order to understand the binding mode of the title compounds at the active site of the target enzyme (EGFR tyrosine kinase, 1M17). Compounds 8f and 7f displayed prominent and conserved binding interactions against 1M17. In addition, compounds 7e, 7f, 8e, and 8f exhibited interesting in vitro antibacterial activity, especially against Gram-negative bacteria E. coli. In summary, the novel benzo[d]thiazolyl substituted-2-quinolone hybrid (8f) could be considered as promising hit and could be further exploited for developing potential anticancer/antimicrobial agents.
- Bolakatti, Girish,Palkar, Mahesh,Katagi, Manjunatha,Hampannavar, Girish,Karpoormath, Rajshekhar V.,Ninganagouda, Shilpa,Badiger, Arvind
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- Iron-catalyzed cross-coupling of N?methoxy amides and arylboronic acids for the synthesis of N-aryl amides
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An efficient iron-catalyzed synthesis of N-aryl amides from N?methoxy amides and arylboronic acids is developed. FeCl3 is used as the sole catalyst for the cross-coupling reaction between N?methoxy amides and arylboronic acids without any other
- Li, Jinhui,Liu, Jin-Biao,Luo, Nianhua,Qiu, Guanyinsheng,Ren, Shangfeng,Wang, Ying,Xie, Huilin
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- Green synthetic method of N-arylamides using recyclable cheap metal catalyst
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Magnetically separable and reusable Fe/Cu oxide (Fe3O4-Cu2O) nanoparticles were employed as an efficient catalyst for the arylation of benzamide, which was carried out with a range of both arylboronic acid and benzamide to afford N-arylamide in good to excellent yield.
- Wang, Xingyang,Liu, Jianhui,An, Guanghui
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supporting information
(2020/10/05)
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- Identification of new pyrrolo[2,3-d]pyrimidines as potent VEGFR-2 tyrosine kinase inhibitors: Design, synthesis, biological evaluation and molecular modeling
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Vascular endothelial growth factor receptor-2 (VEGFR-2) plays a crucial role in cancer angiogenesis. In the current study, a series of novel pyrrolo[2,3-d]pyrimidine based-compounds was designed and synthesized as VEGFR-2 inhibitors, in accordance to the structure activity relationship (SAR) studies of known type II VEGFR-2 inhibitors. The newly synthesized compounds were evaluated for their ability to inhibit VEGFR-2 kinase enzyme in vitro. All the tested compounds demonstrated highly potent dose-related VEGFR-2 inhibition with IC50 values in nanomolar range. Among these compounds, pyrrolo[2,3-d]pyrimidine derivatives carrying biaryl urea moieties (12d and 15c) exhibited IC50 values of 11.9 and 13.6 nM respectively. Additionally, most of the newly synthesized final compounds were tested on 60 human cancer cell lines. Docking of these compounds into the inactive conformation of VEGFR-2 was performed which showed comparable binding modes to that of the FDA approved VEGFR-2 kinase inhibitors. These newly discovered potent kinase inhibitors could be considered as potential candidates for the development of new targeted anticancer agent.
- Adel, Mai,Serya, Rabah A.T.,Lasheen, Deena S.,Abouzid, Khaled A.M.
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p. 612 - 629
(2018/09/29)
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- Potassium Carbonate Promoted C-N Coupling Reaction between Benzamides and Aryl Iodides
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A practical and efficient method for N-arylation of benz-amides promoted by potassium carbonate in the presence of DMEDA was developed. The reaction was carried out without addition of any transition-metal catalyst to afford a variety of N-arylated products in moderate to good yields (up to 97%).
- Huang, Fei,Wu, San,Hu, Weiye,Zhang, Songlin
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supporting information
p. 1090 - 1096
(2017/11/29)
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- SMALL MOLECULE ACTIVATORS OF NICOTINAMIDE PHOSPHORIBOSYLTRANSFERASE (NAMPT) AND USES THEREOF
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Provided herein are small molecule activators of Nicotinamide Phosphoribosyltransferase (NAMPT), compositions comprising the compounds, and methods of using the compounds and compositions.
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Paragraph 00328
(2018/08/03)
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- NOVEL CARBOCYCLIC COMPOUNDS AS ROR GAMMA MODULATORS
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The present disclosure is directed to novel carbocyclic compounds of formula (I) and pharmaceutically acceptable salts thereof, wherein R1, R2, R3, R4, R5, R6, Ra, Rb, n, m and p are as defined herein, which are active as modulators of retinoid-related orphan receptor gamma t (RORγt). These compounds prevent, inhibit, or suppress the action of RORγt and are therefore useful in the treatment of RORγt mediated diseases, disorders, syndromes or conditions such as, e.g., pain, inflammation, COPD, asthma, rheumatoid arthritis, colitis, multiple sclerosis, psoriasis, neurodegenerative diseases and cancer.
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Paragraph 27
(2017/03/21)
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- Efficient conversion of acids and esters to amides and transamidation of primary amides using OSU-6
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OSU-6, an MCM-41 type hexagonal mesoporous silica with strong Bronsted acid properties, has been used to promote the high-yield conversion of carboxylic acids and esters to carboxamides as well as transamidations of primary amides in a one-pot solventless approach. A metal-free heterogeneous catalyst that promotes all of these processes has not been previously reported. OSU-6 enables these transformations to proceed in shorter times and at lower temperatures for a broad range of substrates. An added benefit is that the catalyst can be recycled and reused multiple times without significant loss of activity.
- Nammalwar, Baskar,Muddala, Nagendra Prasad,Watts, Field M.,Bunce, Richard A.
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p. 9101 - 9111
(2015/11/09)
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- Design, synthesis and structure-activity relationship of new HSL inhibitors guided by pharmacophore models
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Hormone-sensitive lipase (HSL) is a critical enzyme involved in the hormonally regulated release of fatty acids and glycerol from adipocyte lipid stores. Its inhibition may improve insulin sensitivity and blood glucose handling in type 2 diabetes. Accordingly, many small-molecule HSL inhibitors have recently been identified. In continuation of our efforts for discovery of new HSL inhibitors, we prepared a variety of esters, amides, sulfonamides and sulfonate esters capable of fitting two pharmacophore models that we developed and published earlier. The tested compounds were synthesized via coupling reactions of aroyl chlorides or sulfonyl chlorides with phenols, amines and related derivatives. Our efforts led to the identification of interesting compounds of low micromolar anti-HSL bioactivities, which have potential to be developed into effective antidiabetic agents.
- Al-Shawabkeh, Jumana D.,Al-Nadaf, Afaf H.,Dahabiyeh, Lina A.,Taha, Mutasem O.
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p. 127 - 145
(2014/03/21)
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- Design, synthesis, and insecticidal evaluation of new benzoylureas containing amide and sulfonate groups based on the sulfonylurea receptor protein binding site for diflubenzuron and glibenclamide
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On the basis of the sulfonylurea receptor (SUR) protein binding site for diflubenzuron and glibenclamide, 15 new benzoylphenylureas containing amide and sulfonate groups were designed and synthesized. Their structures were characterized by 1H n
- Sun, Ranfeng,Wang, Ziwen,Li, Yongqiang,Xiong, Lixia,Liu, Yuxiu,Wang, Qingmin
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p. 517 - 522
(2013/03/14)
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- Synthesis of polysubstituted-1,2,4-triazoles
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A new series of substituted 1,2,4-triazole derivatives have been synthesized using substituted imido derivatives and isonicotinyl hydrazine (or 4-nitrobenzoylhydrazine) as the key intermediates. These compounds include different donor or acceptor substitu
- Liu, Guiyan,Wu, Xueli,Shi, Xuefang
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- Cyclooxygenase-1-selective inhibitors are attractive candidates for analgesics that do not cause gastric damage. Design and in vitro/in vivo evaluation of a benzamide-type cyclooxygenase-1 selective inhibitor
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Although cyclooxygenase-1 (COX-1) inhibition is thought to be a major mechanism of gastric damage by nonsteroidal anti-inflammatory drugs (NSAIDs), some COX-1-selective inhibitors exhibit strong analgesic effects without causing gastric damage. However, it is not clear whether their analgesic effects are attributable to COX-1-inhibitory activity or other bioactivities. Here, we report that N-(5-amino-2-pyridinyl)-4-(trifluoromethyl)benzamide (18f, TFAP), which has a structure clearly different from those of currently available COX-1-selective inhibitors, is a potent COX-1-selective inhibitor (COX-1 IC 50 = 0.80 ± 0.05 μM, COX-2 IC50 = 210 ± 10 μM). This compound causes little gastric damage in rats even at an oral dose of 300 mg/kg, though it has an analgesic effect at as low a dose as 10 mg/kg. Our results show that COX-1-selective inhibitors can be analgesic agents without causing gastric damage.
- Kakuta, Hiroki,Zheng, Xiaoxia,Oda, Hiroyuki,Harada, Shun,Sugimoto, Yukio,Sasaki, Kenji,Tai, Akihiro
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p. 2400 - 2411
(2008/12/22)
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- Highly efficient synthesis of fused bicyclic 2,3-diaryl-pyrimidin-4(3H)-ones via Lewis acid assisted cyclization reaction
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An expedient one-pot synthesis of fused bicyclic 2,3-diaryl-pyrimidin-4(3H)-ones from three readily available components is described. The key step is a Lewis acid assisted cyclization reaction.
- Yang, Kunyong,He, Xiaohui,Choi, Ha-soon,Wang, Zhicheng,Woodmansee, David H.,Liu, Hong
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p. 1725 - 1728
(2008/09/17)
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- An improved aldehyde linker for the solid phase synthesis of hindered amides
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A novel aldehyde dual-linker system has been developed for the solid phase synthesis of sterically hindered amides. The linker [5-(4-formyl-3- hydroxyphenoxy)pentanoic acid] exploits an intramolecular oxygen-nitrogen acyl transfer mechanism to prepare com
- Liley, Mark J.,Johnson, Tony,Gibson, Susan E.
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p. 1322 - 1329
(2007/10/03)
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- Substituted cyclic amine compound, production process thereof and pharmaceutical composition for circulatory organ use containing the same
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A substituted cyclic amine compound represented by the following general formula (1) STR1 wherein each of R1 to R5 represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group or the like, A represents a carbonyl group or a sulfonyl group, B represents a methine moiety or a nitrogen atom, D represents a methine moiety, a nitrogen atom or =N(→O)-- and n is an integer of 2 to 3; and synthetic methods thereof. The inventive compound is useful in preventing and treating circulatory organ-related diseases such as hypertension, ischemic heart disease, cerebrovascular disease, peripheral circulatory disease and the like.
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- Kinetics and Mechanism of the Aminolysis of S-Phenyl Thiobenzoates
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Kinetic studies on the nucleophilic substitution reaction of S-phenyl thiobenzoates with anilines have been carried out at 55.0 deg C.Effects of substituents in the nucleophile(X), substrate(Y) and leaving groups(Z) are analyzed in terms of Hammett's and Broensted's coefficients, ρi and βi and cross-interaction constants ρij and βij where i and j denote X, Y or Z.The sign of ρXZ (or βXZ) is positive, and accordingly, the transition state(TS) variations with the substituents are consistent with those predicted by the potential energy surface diagram; the magnitude of ρx(βx) and ρxy decreases with a better leaving group, and that of ρz and βz decreases with a stronger nucleophile leading to an earlier TS, in agreement with a normal Hammond effect.The larger magnitudes of ρXY, ρYZ and βXZ suggest that the reaction proceeds by an associative SN2 mechanism.A greater kH/kD value (1.0) is observed with deuterated aniline nucleophiles for a stronger nucleophile and a better leaving group, supporting the earlier TS proposed on the basis of the cross-interaction constants.The inverse secondary kinetic isotope effects obtained preclude involvement of any four-center TS or base catalysis by aniline.
- Lee, Ikchoon,Shim, Chang Sub,Lee, Hai Whang
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p. 769 - 793
(2007/10/02)
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- The heterolytic and the homolytic cleavage of the oxygen-nitrogen bond in O,N-diacylarylhydroxylamines
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Two O,N-diacylarylhydroxylamines were thermolysed in different solvents and first order rate constants and activation parameters were calculated.A six-membered transition state is suggested in acetonitrile, radical pairs or ion pairs are suggested in the other solvents.Photolysis of five of these compounds gave a homolytic reaction pattern.
- Bassoli, Angela,Gregorio, Giuseppina Di,Galliani, Guido,Riboldi, Massimo,Rindone, Bruno,et al.
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p. 293 - 297
(2007/10/02)
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- Synthesis and Antiviral Activity of Sulfonamidobenzophenone Oximes and Sulfonamidobenzamides
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To find antiviral agents, various sulfonamidobenzophenone oximes (II) were synthesized from the appropriate m-sulfonamidobenzophenones by hydroxylamine reaction.The reaction products were generally obtained as syn/anti mixtures which were separable by fractional crystallization.The anti isomer had more potent antipoliovirus activity than the syn isomer.Various sulfonamidobenzamides (III) which were structurally related to II were synthesized by the reaction of amino-substituted benzamides with sulfuryl chloride or amines with (aminosulfonyl)benzoyl chloride.Antiviral activity was examined by the plaque-inhibition test.Compounds 5, 36, and 69 exhibited strong antipicornavirus activity.The structure-activity relationships are discussed.
- Ogata, Masaru,Matsumoto, Hiroshi,Shimizu, Sumio,Kida, Shiro,Wada, Toru,et al.
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p. 417 - 423
(2007/10/02)
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- STUDIES ON ACYLATED N-D-RIBOFURANOSYLAMINES. PART III. N-p-CHLORO- AND N-m-NITROPHENYL-N-AMINES AND THEIR N-ACETYL DERIVATIVES
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2,3,5-Tri-O-(p-nitrobenzoyl)-β-D-ribofuranosyl bromide was reacted with p-chloro- and m-nitroanilines and the condensation products were N-acetylated.The structure of compounds 3-8 was established on the basis of the optical rotation measurements, CD curves, as well as the IR and 1H NMR spectral evidence.Conclusions referring to the conformational populations of N-acetyl-N-aryl-N-amines, published in our previous papers, have been supplemented by stating that the β-D-anomers assume one, whereas the α-D and β-L anomers two differenttypes of conformation of the furanose ring.
- Walczyna, Rita,Sokolowski, Janusz
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p. 791 - 804
(2007/10/02)
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