cas 5718-83-2, Rhodanine-3-acetic acid | Articles data

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Design and synthesis of amino acid derivatives of substituted benzimidazoles and pyrazoles as Sirt1 inhibitors
Owing to its presence in several biological processes, Sirt1 acts as a potential therapeutic target for many diseases. Here, we report the structure-based designing and synthesis of two distinct series of novel Sirt1 inhibitors, benzimidazole mono-peptide
Asthana, Shailendra,Banerjee, Sanjay K.,Kumar, Vasantha,Paramesha, Bugga,Poojary, Boja,Purushotham, Nikil,Singh, Mrityunjay,Wakode, Sharad
p. 3809 - 3827
(2022/02/16)

Pyrimidine-thiazolidinone derivatives
Pyrimidine-thiazolidinone derivatives may be used for preventing or treating diseases in humans or animals, and have demonstrated efficacy specifically in treating type-2 diabetes. Methods of synthesizing the pyrimidine-thiazolidinone derivatives, described herein, can provide high yields in a short time and with high purity. The pyrimidine-thiazolidinone derivatives demonstrate improved hypoglycemic activity compared to most anti-diabetic drugs currently available.
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Page/Page column 9-10

(2020/07/09)

5-(1H-Indol-3-ylmethylene)-4-oxo-2-thioxothiazolidin-3-yl)alkancarboxylic Acids as Antimicrobial Agents: Synthesis, biological evaluation, and molecular docking studies
Background: Infectious diseases symbolize a global consequential strain on public health security and impact on the socio-economic stability all over the world. The increasing resistance to the current antimicrobial treatment has resulted in crucial need for the discovery and development of novel entity for the infectious treatment with different modes of action that could target both sensitive and resistant strains. Methods: Compounds were synthesized using classical methods of organic synthesis. Results: All 20 synthesized compounds showed antibacterial activity against eight Gram-positive and Gram-negative bacterial species. It should be mentioned that all compounds exhibited better antibacterial potency than ampicillin against all bacteria tested. Furthermore, 18 compounds appeared to be more potent than streptomycin against Staphylococcus aureus, Enterobacter cloacae, Pseudomonas aeruginosa, Listeria monocytogenes, and Escherichia coli. Three the most active compounds 4h, 5b, and 5g appeared to be more potent against MRSA than ampicillin, while streptomycin did not show any bactericidal activity. All three compounds displayed better activity also against resistant strains P. aeruginosa and E. coli than ampicillin. Furthermore, all compounds were able to inhibit biofilm formation 2- to 4-times more than both reference drugs. Compounds were evaluated also for their antifungal activity against eight species. The evaluation revealed that all compounds exhibited antifungal activity better than the reference drugs bifonazole and ketoconazole. Molecular docking studies on antibacterial and antifungal targets were performed in order to elucidate the mechanism of antibacterial activity of synthesized compounds. Conclusion: All tested compounds showed good antibacterial and antifungal activity better than that of reference drugs and three the most active compounds could consider as lead compounds for the development of new more potent agents.
Ciric, Ana,Geronikaki, Athina,Glamoclija, Jasmina,Horishny, Volodymyr,Kartsev, Victor,Matiychuk, Vasyl,Petrou, Anthi,Sokovic, Marina
(2020/04/29)

Quinolinone compound and application thereof
The invention discloses a quinolinone compound containing rhodanine and similar fragments thereof and pharmaceutically acceptable salts thereof, and relates to the technical field of organic chemistry. The quinolinone compound is shown as general formula I in the specification, wherein substituent groups R1, X and R2 have meanings given in the specification. The invention also relates to application of the compound shown as the general formula I and the pharmaceutically acceptable salts thereof in preparing medicines for treating diseases caused by abnormal expression of IDO, in particular toapplication in preparing medicines for treating and/or preventing cancers.
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Paragraph 0083-0084

(2020/07/12)

Synthesis, characterization, antibacterial and antioxidant potency of nsubstituted- 2-sulfanylidene-1,3-thiazolidin-4-one derivatives and QSAR study
Background: Rhodanine is known for its potential and important role in the medicinal chemistry since its derivatives exhibit a wide range of pharmacological activities such as antibacterial, antifungal, antidiabetic, antitubercular, anti-HIV, antiparasitic, antioxidant, anticancer, antiproliferative and anthelmintic agents. Objectives: Since N-substituted rhodanine synthons are rarely commercially available, it is desirable to develop a straightforward synthetic approach for the synthesis of these key building blocks. The objective was to synthesize a series of rhodanine derivatives and to investigate their antimicrobial and antioxidant activity. Also, in order to obtain an insight into their structure-activity relationship, QSAR studies on the antioxidant activity were performed. Methods: 1H and 13C FTNMR spectra were recorded on Bruker Avance 600 MHz NMR Spectrometer, mass analysis was carried out on ESI+ mode by LC-MS/MS API 2000. 2,2-Diphenyl-1- picrylhydrazyl radical scavenging activity (% DPPH) was determined in dimethylsulfoxide (DMSO) as a solvent. The antibacterial activity was assessed against Bacillus subtilis, Staphylococcus aureus (Gram positive) and Escherichia coli, Pseudomonas aeruginosa (Gram negative) bacteria in terms of the minimum inhibitory concentrations (MICs) by a modified broth microdilution method. Results: A series of N-substituted-2-sulfanylidene-1,3-thiazolidin-4-ones were synthesized and characterized by 1H NMR, 13C NMR, FTIR, GC MS, LCMS/MS and C,H,N,S elemental analysis. Most of the synthesized compounds showed moderate to excellent antibacterial activity (MIC values from 125 μg/ml to 15.62 μg/mL) and DPPH scavenging activity (from 3.60% to 94.40%). Compound 2-thioxo-3- (4-(trifluoromethyl)-phenyl)thiazolidin-4-one showed the most potent activity against Escherichia coli (3.125 μg/mL), equivalent to antibiotic Amikacin sulphate and against Staphylococcus aureus (0.097 μg/ml), 100 times superior then antibiotic Amikacin sulphate. It has also shown a potent antioxidant activity (95% DPPH scavenging). Two best QSAR models, obtained by GETAWAY descriptor R7p+, Balabans molecular connectivity topological index and Narumi harmonic topological index (HNar), suggest that the enhanced antioxidant activity is related to the presence of pairs of atoms higher polarizability at the topological distance 7, substituted benzene ring and longer saturated aliphatic chain in N-substituents. Conclusion: A series of novel N-substituted-2-thioxothiazolidin-4-one derivatives were designed, synthesized, characterized and evaluated for their antibacterial and antioxidant activity in vitro. Majority of the compounds showed excellent antibacterial activity compared to ampicillin and few of them have an excellent activity as compared to Chloramphenicol standard antibacterial drug. The QSAR study has clarified the importance of presenting a pairs of atoms higher polarizability, such as Cl and S at the specific distance, as well as the substituted benzene ring and a long saturated aliphatic chain in N-substituents for the enhanced antioxidant activity of 2-sulfanylidene-1,3- thiazolidin-4-one derivatives.
Brahmbhatt, Harshad,Molnar, Maja,Pavi?, Valentina,Rastija, Vesna
p. 840 - 849
(2020/01/25)

Design, synthesis, biological evaluation, and molecular modeling studies of rhodanine derivatives as pancreatic lipase inhibitors
A series of rhodanine-3-acetic acid derivatives were synthesized via Knoevenagel condensation of rhodanine-3-acetic acid with various substituted aromatic aldehydes. The synthesized derivatives were screened in vitro for understanding the inhibitory potential towards pancreatic lipase (PL), a key enzyme responsible for the digestion of dietary fats. Derivative 8f exhibited a potential inhibitory activity towards PL (IC50=5.16 μM), comparable to that of the standard drug, orlistat (0.99 μM). An increase in the density of the aromatic ring resulted in potential PL inhibition. The enzyme kinetics of 8f exhibited a reversible competitive-type inhibition, similar to that of orlistat. Derivative 8f exhibited a MolDock score of -125.19 kcal/mol in docking studies, and the results were in accordance with their PL inhibitory potential. Furthermore, the reactive carbonyl group of 8f existed at a distance adjacent to Ser152 (≈3 ?) similar to that of orlistat. Molecular dynamics simulation (10 ns) of the 8f-PL complex revealed a stable binding conformation of 8f in the active site of PL (maximum root mean square displacement of ≈2.25 ?). The present study identified novel rhodanine-3-acetic acid derivatives with promising PL inhibitory potential, and further lead optimization might result in potent PL inhibitors.
Chauhan, Divya,George, Ginson,Sridhar,Bhatia, Rohit,Paul, Atish T.,Monga, Vikramdeep
(2019/08/21)

Design and synthesis of biaryloxazolidinone derivatives containing a rhodanine or thiohydantoin moiety as novel antibacterial agents against Gram-positive bacteria
Novel biaryloxazolidinone derivatives containing a rhodanine or thiohydantoin moiety were designed, synthesized and evaluated for their antibacterial activity. The key compounds 7 and 9 were synthesized by the knoevenagel condensation of intermediate aldehyde 5 with rhodanine derivatives 6a?6b. The preliminary study showed that compounds 7, 9 and 10e exhibited potent antibacterial activity with MIC values of 0.125 μg/mL against S. aureus, MRSA, MSSA, LREF and VRE pathogens, using linezolid and radezolid as the positive controls. The most promising compound 10e exhibited potent antibacterial activity against tested clinical isolates of MRSA, MSSA, VRE and LREF with MIC values in the range of 0.125–0.5 μg/mL, and the potency of 10e against clinical isolates of LREF was 64-fold higher than that of linezolid. Moreover, compound 10e was non-cytotoxic with an IC50 value of 91.04 μM against HepG2 cell. Together, compound 10e might serve as a novel antibacterial agent for further investigation.
Wu, Yachuang,Ding, Xiudong,Xu, Sicong,Yang, Yifeng,Zhang, Xue,Wang, Chu,Lei, Hong,Zhao, Yanfang
supporting information
p. 496 - 502
(2019/01/04)

Highly efficient microwave synthesis of rhodanine and 2-thiohydantoin derivatives and determination of relationships between their chemical structures and antibacterial activity
Here we report studies on the synthesis of 12 new heterocyclic derivatives that differ in three structural motifs and the simultaneous evaluation of the impact of these three variables on the biological properties. The examined compounds are based on rhodanine and 2-thiohydantoin cores equipped with hydrogen or carboxymethyl substituents at the N-3 position and linked to a triphenylamine moiety through 1,4-phenylene, 1,4-naphthalenylene and 1,9-anthracenylene spacers at the C-5 position of the heterocycles. All the compounds were synthesized very quickly, selectively and in high yields according to the developed microwave-assisted Knoevenagel condensation protocol, and they were characterized thoroughly with NMR, FT-IR and ESI-HRMS techniques. The derivatives were tested for their activity against selected strains of Gram-positive and Gram-negative bacteria and yeast. Two compounds showed good activity against Gram-positive bacteria, and all of them showed low cytotoxicity against three cell lines of the human immune system. Based on membrane permeability assays it was demonstrated that the active compounds do not penetrate the cell membrane, and thus they must act on the bacterial cell surface. Finally, we proved that the evaluated structure modifications had a synergistic effect and the simultaneous presence of a 1,4-phenylene spacer and carboxymethyl group at N-3 caused the highest boost in antimicrobial activity.
Tejchman, Waldemar,Orwat, Bartosz,Korona-G?owniak, Izabela,Barbasz, Anna,Kownacki, Ireneusz,Latacz, Gniewomir,Handzlik, Jadwiga,?es?awska, Ewa,Malm, Anna
p. 39367 - 39380
(2019/12/14)

A carboxymethyl alkyl [...] structure of 1, 3 - diaryl pyrazoles PTP1B inhibitor and its preparation and use
The present invention provides a novel carboxymethyl alkyl [...] structure of 1, 3 - diaryl pyrazole compound or its pharmaceutically acceptable salt as a novel protein tyrosine phosphatase 1 B (PTP1B) inhibitors. Studies show that this kind of inhibitor can effectively inhibit PTP1B activity, can be used as an insulin sensitizer, used for the prevention and/or treatment of PTP1B-mediated insulin resistance related diseases, in particular II type diabetes and obesity. The invention also provides a preparation method for this class of inhibitors.
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Paragraph 0022

(2019/06/07)

Discovery of 1,3-diphenyl-1H-pyrazole derivatives containing rhodanine-3-alkanoic acid groups as potential PTP1B inhibitors
Two series of 1,3-diphenyl-1H-pyrazole derivatives containing rhodanine-3-alkanoic acid groups were identified as competitive protein tyrosine phosphatase 1B (PTP1B) inhibitors. Among the compounds studied, IIIv was found to have the best in vitro inhibition activity against PTP1B (IC50 = 0.67 ± 0.09 μM) and the best selectivity (9-fold) between PTP1B and T-cell protein tyrosine phosphatase (TCPTP). Molecular docking studies demonstrated that compounds IIIm, IIIv and IVg could occupy simultaneously at both the catalytic site and the adjacent pTyr binding site. These results provide novel lead compounds for the design of inhibitors of PTP1B as well as other PTPs.
Sun, Liangpeng,Wang, Peipei,Xu, Lili,Gao, Lixin,Li, Jia,Piao, Huri
p. 1187 - 1193
(2019/03/26)

Heterocycle-containing biaryl oxazolidinone compound and preparation method thereof
The invention relates to a heterocycle-containing biaryl oxazolidinone compound with the structural formula as shown in the figure I in the specification, or an optical isomer and a pharmaceutically acceptable salt and/or solvate thereof, a preparation method for the heterocycle-containing biaryl oxazolidinone compound as well as the optical isomer and the pharmaceutically acceptable salt and/or solvate thereof, and a pharmaceutical composition containing the compound. According to the heterocycle-containing biaryl oxazolidinone compound, the substituent groups R1, R2, R3, R4 and A-ring have the meanings given in the specification. The invention also relates to application of the compound as well as the pharmaceutically acceptable salt and solvate or a prodrug thereof as an antibacterial drug in treatment, especially in treatment of gram-positive bacterial infection and mycobacterium tuberculosis infection. (Please see the figure I in the specification for the structural formula of theheterocyclic ring-containing biaryl oxazolidinone compound.).
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Paragraph 0187; 0189; 0190

(2019/01/08)

Design, synthesis, SAR and biological investigation of 3-(carboxymethyl)rhodanine and aminothiazole inhibitors of Mycobacterium tuberculosis Zmp1
Sixteen 3-(carboxymethyl)rhodanines, and twelve aminothiazoles as rhodanine-mimetics were designed, synthesized and tested as inhibitors of the Zmp1 enzyme from Mycobacterium tuberculosis (Mtb). Almost all rhodanines (5a–d, 5f–n, and 7a–b) exhibited Zmp1 inhibition with IC50 values in the range 1.3–43.9 μM, whereas only aminothiazoles 12b and 12d proved active with IC50 values of 41.3 and 35.7 μM, respectively. Structure-activity relationships (SAR) were coupled with molecular modeling studies to highlight structural determinants for Zmp1 inhibition. Moreover, rhodanines 5a and 5c induced 23.4 and 53.8% of Mtb growth inhibition in THP-1 infected cells, respectively, at the non-toxic concentration of 10 μg/ml. This work represents a step forward in targeting Zmp1 by small molecules.
Mori, Mattia,Deodato, Davide,Kasula, Mohan,Ferraris, Davide M.,Sanna, Adriana,De Logu, Alessandro,Rizzi, Menico,Botta, Maurizio
supporting information
p. 637 - 641
(2018/02/06)

Rhodanine as a Potent Scaffold for the Development of Broad-Spectrum Metallo-β-lactamase Inhibitors
A series of rhodanines was constructed, their Z-configuration was confirmed by small molecule X-ray crystal structures, and their activity against metallo-β-lactamases (MβLs) was measured. The obtained 26 molecules and a thioenolate specifically inhibited the MβL L1 with an IC50 range of 0.02-1.7 μM, and compounds 2h-m exhibited broad-spectrum inhibition of the MβLs NDM-1, VIM-2, ImiS, and L1 with IC50 values 16 μM. All inhibitors increased the antimicrobial effect of cefazolin against E. coli cells expressing L1, resulting in a 2-8-fold reduction in MIC. Docking studies suggested that the nitro (NDM-1, CphA, and L1) or carboxyl group (VIM-2) of 2l coordinates one or two Zn(II) ions, while the N-phenyl group of the inhibitor enhances its hydrophobic interaction with MβLs. These studies demonstrate that the diaryl-substituted rhodanines are good scaffolds for the design of future broad-spectrum inhibitors of MβLs.
Xiang, Yang,Chen, Cheng,Wang, Wen-Ming,Xu, Li-Wei,Yang, Ke-Wu,Oelschlaeger, Peter,He, Yuan
supporting information
p. 359 - 364
(2018/04/19)

Antibacterial properties of 5-substituted derivatives of rhodanine-3-carboxyalkyl acids
A series of rhodanine 3-carboxyalkanoic acid derivatives possessing 4′-(N,N-dialkyl-amino or diphenylamino)-benzylidene moiety as a substituent at the C-5 position were synthesised and their antibacterial activity was screened. All the rhodanine derivatives showed bacteriostatic or bactericidal activity to the reference gram-positive bacterial strains, but lack of activity to the reference Gram-negative bacterial strains and yeast strains was observed.
Tejchman, Waldemar,Korona-Glowniak, Izabela,Malm, Anna,Zylewski, Marek,Suder, Piotr
p. 1316 - 1324
(2017/05/04)

Spectral Characteristic and Preliminary Anticancer Activity in vitro of Selected Rhodanine-3-carboxylic Acids Derivatives
Selected rhodanine-3-carboxylic acids derivatives were synthesized to determine the influence of the structure and the length of the linker between the carboxyl group and the nitrogen atom (N-3) in the 2-thioxo-4-thiazolidinone ring on their activity, monitored via interactions with human serum albumin. Based on fluorescence studies, we concluded that the length of the linker has a limited impact on these interactions. Additionally, we proposed the static mechanism of quenching for all the tested compounds. These derivatives seem to possess an anticancer activity in the nanomolar range with 3 as the most potent compound in both A2780 and A2780cisR cell lines.
Stawoska, Iwona,Tejchman, Waldemar,Mazuryk, Olga,Ly?ka, Antonín,Nowak-Sliwinska, Patrycja,?es?awska, Ewa,Nitek, Wojciech,Kania, Agnieszka
p. 2889 - 2897
(2017/09/25)

Novel tetrazoloquinoline-rhodanine conjugates: Highly efficient synthesis and biological evaluation
In search of new active molecules against Mycobacterium tuberculosis (MTB) H37Ra and Mycobacterium bovis BCG, a small focused library of rhodanine incorporated tetrazoloquinoline has been efficiently synthesized by using [HDBU][HSO4] acidic ionic liquid. The compound 3c found to be promising inhibitor of MTB H37Ra and M. bovis BCG characterized by lower MIC values 4.5 and 2.0 μg/mL, respectively. The active compounds were further tested for cytotoxicity against HeLa, THP-1, A549 and PANC-1 cell lines using MTT assay and showed no significant cytotoxic activity at the maximum concentration evaluated. Again, the synthesized compounds were found to have potential antifungal activity. Furthermore, to rationalize the observed biological activity data, the molecular docking study also been carried out against a potential target Zmp1 enzyme of MTB H37Ra, which revealed a significant correlation between the binding score and biological activity for these compounds. The results of in vitro and in silico study suggest that these compounds possess ideal structural requirement for the further development of novel therapeutic agents.
Subhedar, Dnyaneshwar D.,Shaikh, Mubarak H.,Nawale, Laxman,Yeware, Amar,Sarkar, Dhiman,Khan, Firoz A. Kalam,Sangshetti, Jaiprakash N.,Shingate, Bapurao B.
supporting information
p. 2278 - 2283
(2016/04/20)

Synthesis and evaluation of some novel N-substituted rhodanines for their anticancer activity
Novel N-substituted rhodanines 2a-g were synthesized by conventional and microwave-assisted methods and tested for their anticancer activity. Structure-activity relationship of the synthesized rhodanine 2a-g as antiproliferative agents was investigated. The results revealed that all the seven compounds showed potent antiproliferative activity in a concentration-dependent manner on leukemic cell line K562. Among the tested compounds, 2b was found to be more potent when compared by trypan blue and MTT assay. IC50 values of 2b using trypan blue and MTT assay were found to be 11.1 and 20.3 μg/ml, respectively. A dose-dependent increase in the LDH release was also observed upon treatment with 2a-g. Cell cycle analysis revealed that 2b affects DNA replication and leads to accumulation of cells in G0 and decline of G2/M, G1 and S phases which indicates apoptosis. The selective cytotoxic activity against human chronic myelogenous cell line (K562), via apoptosis, suggests that compound 2b is a promising scaffold for the development of novel anticancer drug.
Ali Muhammad, Sulaiman,Ravi, Subban,Thangamani, Arumugam
p. 994 - 1004
(2016/04/20)

[Et3NH][HSO4] catalyzed efficient synthesis of 5-arylidene-rhodanine conjugates and their antitubercular activity
Abstract: We have described a highly efficient, safer protocol for the synthesis of 5-arylidene-rhodanine conjugates catalyzed by Bronsted acidic ionic liquid [Et3NH][HSO4] in excellent yields. The protocol offers cost-effective, environmentally benign, solvent-free conditions and recycle–reuse of the catalyst. The synthesized 5-arylidene-rhodanine conjugates were characterized on the basis of 1H NMR, 13C NMR and HRMS spectral data. A series of 5-arylidene-rhodanine derivatives 3a–h, 4a–h were synthesized and evaluated for their in vitro antitubercular activity against dormant Mycobacterium tuberculosis H37Ra and M. bovis BCG strains. Moreover, compounds 3a, 3b, 3e, 3f, 3g, 3h and 4f exhibited good antitubercular activity and were also evaluated for anti-proliferative activity against MCF-7, A549 and HCT116 cell lines using modified MTT assay and found to be noncytotoxic. Compounds 3a–h and 4f were further screened for their antibacterial activity against four bacteria strains to assess their selectivity towards M. tuberculosis. Furthermore, in silico ADME prediction of all the tested compounds followed the criteria for orally active drug and, therefore, these compounds may have a good potential for eventual development as oral agents. Graphical Abstract: [Figure not available: see fulltext.]
Subhedar, Dnyaneshwar D.,Shaikh, Mubarak H.,Nawale, Laxman,Yeware, Amar,Sarkar, Dhiman,Shingate, Bapurao B.
p. 6607 - 6626
(2016/07/12)

The Crystal Structures of Three Rhodanine-3-Carboxylic Acids
Abstract: The rhodanine derivatives show various pharmacological activities. Rhodanine-3-carboxylic acids can be used as the substrates in various synthesis of compounds containing rhodanine-3-carboxyalkyl moiety. In this paper new crystal structures of rhodanine-3-acetic acid and its two homologues, i.e. rhodanine-3-propionic acid and rhodanine-3-butyric acid, are reported. The relationship between the length of the alkyl chain and the geometry of these molecules was studied. The crystal network is dominated by strong hydrogen bonds O–H···O formed by the carboxyl groups. Additionally, weak C–H···O and C–H···S contacts are observed. Graphical Abstract: To study the difference in intermolecular interactions of rhodanine-3-carboxylic acid, three crystal structures were determined by X-ray diffraction method. The crystal network in all studied structures is built of homosynthons and stabilized by weak C–H···O and C–H···S contacts.[Figure not available: see fulltext.]
Tejchman, Waldemar,Skórska-Stania, Agnieszka,?es?awska, Ewa
p. 181 - 187
(2016/05/02)

Synthesis and antimicrobial evaluation of 5-aryl-1,2,4-triazole-3-thione derivatives containing a rhodanine moiety
Three series of 5-aryl-1,2,4-triazole-3-thione derivatives containing a rhodanine moiety (5a-k, 6a-i, and 7a-i) have been synthesized, characterized and evaluated for their antibacterial activity. Some of these displayed potent antibacterial activity against several Gram-positive and Gram-negative bacterial strains (including multidrug-resistant clinical isolates) with minimum inhibitory concentration (MIC) values in the range of 4-64 μg/mL and minimum bactericidal concentration (MBC) values in the range of 8-256 μg/mL. Compared with previously reported rhodanine derivatives, these compounds exhibited a broad spectrum of antibacterial activity by means of introducing 4-amino-5-aryl-1,2,4-triazole-3-thione moiety. Notably, compound 5f exhibited good antibacterial activity against Staphylococcus aureus RN 4220, S. aureus 209, S. aureus 503, Gram-negative bacteria (Escherichia coli 1924), and Candida albicans 7535 with MBC values of 8 or 16 μg/ml. All of the compounds synthesized in the current Letter were characterized by 1H NMR, 13C NMR, infrared and mass spectroscopy.
Li, Chao,Liu, Jia-Chun,Li, Ya-Ru,Gou, Cheng,Zhang, Mei-Ling,Liu, Hong-Yan,Li, Xiao-Zhen,Zheng, Chang-Ji,Piao, Hu-Ri
supporting information
p. 3052 - 3056
(2015/06/22)

Synthesis and biological evaluation of new rhodanine analogues bearing 2-chloroquinoline and benzo[h]quinoline scaffolds as anticancer agents
Several rhodanine derivatives (9-39) were synthesized for evaluation of their potential as anticancer agents. Villsmeier cyclization to synthesize aza-aromatic aldehydes, rhodanine derivatives preparation and Knoevenagel type of condensation between the rhodanines and aza-aromatic aldehydes are key steps used for the synthesis of 31 compounds. In vitro antiproliferative activity of the synthesized rhodanine derivatives (9-39) was studied on a panel of six human tumor cell lines viz. HGC, MNK-74, MCF-7, MDAMB-231, DU-145 and PC-3 cell lines. Some of the compounds were capable of inhibiting the proliferation of cancer cell lines at a micromolar concentration. Six compounds are found to be potent against HGC cell lines; compound 15 is found to be active against HGC - Gastric, MCF7 - Breast Cancer and DU145 - Prostate Cancer cell lines; compound 39 is potent against MNK-74; four compounds are found to be potent against MCF-7 cell lines; three compounds are active against MDAMB-231; nine compounds are found to be potent against DU-145; three compounds are active against PC-3 cell lines. These compounds constitute a promising starting point for the development of novel and more potent anticancer agents in future.
Ramesh, Vadla,Ananda Rao, Boddu,Sharma, Pankaj,Swarna,Thummuri, Dinesh,Srinivas, Kolupula,Naidu,Jayathirtha Rao, Vaidya
p. 569 - 580
(2014/07/21)

Novel arylhydrazone derivatives bearing a rhodanine moiety: Synthesis and evaluation of their antibacterial activities
A series of arylhydrazone derivatives bearing a rhodanine moiety have been synthesized, characterized, and evaluated as antibacterial agents. Some of these compounds showed potent antibacterial activities against several different strains of Gram-positive bacteria, including multidrug-resistant clinical isolates. Of the compounds tested, IIk and IIIk were identified as the most effective, with minimum inhibitory concentration values of 2-4 μg/mL against multidrug-resistant Gram-positive organisms, including methicillin-resistant and quinolone-resistant Staphylococcus aureus. None of the compounds exhibited any activity against the Gram-negative bacteria Escherichia coli 1356 at 64 μg/mL.
Li, Wei,Zheng, Chang-Ji,Sun, Liang-Peng,Song, Ming-Xia,Wu, Yan,Li, Yin-Jing,Liu, Yi,Piao, Hu-Ri
p. 852 - 861
(2014/08/05)

Thiazolidinone-peptide hybrids as dengue virus protease inhibitors with antiviral activity in cell culture
The protease of dengue virus is a promising target for antiviral drug discovery. We here report a new generation of peptide-hybrid inhibitors of dengue protease that incorporate N-substituted 5-arylidenethiazolidinone heterocycles (rhodanines and thiazolidinediones) as N-terminal capping groups of the peptide moiety. The compounds were extensively characterized with respect to inhibition of various proteases, inhibition mechanisms, membrane permeability, antiviral activity, and cytotoxicity in cell culture. A sulfur/oxygen exchange in position 2 of the capping heterocycle (thiazolidinedione-capped vs rhodanine-capped peptide hybrids) has a significant effect on these properties and activities. The most promising in vitro affinities were observed for thiazolidinedione-based peptide hybrids containing hydrophobic groups with Ki values between 1.5 and 1.8 μM and competitive inhibition mechanisms. Rhodanine-capped peptide hybrids with hydrophobic substituents have, in correlation with their membrane permeability, a more pronounced antiviral activity in cell culture than the thiazolidinediones.
Nitsche, Christoph,Schreier, Verena N.,Behnam, Mira A. M.,Kumar, Anil,Bartenschlager, Ralf,Klein, Christian D.
p. 8389 - 8403
(2013/12/04)

Aqueous microwave-assisted one-pot synthesis of N-substituted rhodanines
Two aqueous, one-pot, microwave-assisted methods for the rapid synthesis of N-substituted rhodanines from amine substrates are described. Alkyl- and benzylamines could be converted into the corresponding rhodanines with an atom-efficient one-pot, three-step protocol based on carbon disulfide and chloroacetic acid in short reaction times and good to excellent yields. An alternative, microwave-assisted one-pot, one-step protocol using bis(carboxymethyl)trithiocarbonate in water was developed for the synthesis of N-arylrhodanines from anilines.
Nitsche, Christoph,Klein, Christian D.
p. 5197 - 5201
(2012/10/30)

Efficient conversion of N-terminal of L-tyrosine, DL-phenyl alanine, and glycine to substituted 2-thioxo-thiazolidine-4-ones: A stereospecific synthesis
We report facile and efficient conversion of the amino functional group of amino acids such a s L-tyrosine, DL-phenylalanine, and glycine to the corresponding (±)-2-thioxo-thiazolidine-4-ones (rhodanines). Stereospecific synthesis of amino acid-incorporated rhodanine is achieved in the case of L-tyrosine. Knoevenagel condensation over the active methylene group at the fifth position of the corresponding rhodanines is also described. The substituted rhodanine incorporated with tyrosine in the form of a dimer connected via two-carbon linker possesses significant anticancer activity against A549 cells (human lung cancer cells).
Prashantha Kumar,Basu, Prabudha,Adhikary,Nanjan
experimental part
p. 3089 - 3096
(2012/08/27)

Synthesis and anticancer activity of indolin-2-one derivatives bearing the 4-thiazolidinone moiety
A novel series of indolin-2-one derivatives containing the 4-thiazolidinone moiety (5a-5p) was synthesized and the cytotoxicity of these derivatives was evaluated in vitro against three human cancer cell lines (HT-29, H460 and MDA-MB-231) by standard MTT assay. Some prepared compounds exhibited significant cytotoxicity against different human cancer cell lines. Several potent compounds were further evaluated against one normal cell line (WI-38). In particular, the promising compound 5h showed remarkable cytotoxicity and selectivity against the HT-29 and H460 cancer cell lines (IC50 = 0.016 μmol/L, 0.0037 μmol/L, respectively). A novel series of indolin-2-one derivatives containing the 4-thiazolidinone moiety (5a-5p) was synthesized and evaluated in vitro against three human cancer cell lines (HT-29, H460 and MDA-MB-231). The promising compound 5h showed remarkable cytotoxicity and selectivity against HT-29 and H460 cancer cell lines (IC50 = 0.016 μmol/L, 0.0037 μmol/L, respectively) Copyright
Wang, Shuobing,Zhao, Yanfang,Zhu, Wufu,Liu, Ying,Guo, Kaixing,Gong, Ping
experimental part
p. 73 - 80
(2012/03/12)

BIARYLRHODANINE AND PYRIDYLRHODANINE COMPOUNDS AND THEIR USE
The present invention pertains generally to the field of therapeutic compounds, and more specifically to compounds related to rhodanine, which compounds are inter alia inhibitors and/or binders of antiapoptotic/pro-survival Bcl-2 proteins such as Bcl-XL and/or Mcl-1. More specifically, the present invention is concerned with Rhodanine- based Pan-Bcl-2 inhibitors and Mcl-1 -specific inhibitors as anti-cancer compounds. The present invention also pertains to pharmaceutical compositions comprising such compounds, and the use of such compounds and compositions, both in vitro and invivo, to inhibit and/or bind Bcl-2 proteins such as Bcl-XL and/or Mcl-1, and in the treatment of diseases and conditions that are mediated by Bcl-2 proteins, that are ameliorated by the inhibition of Bcl-2 protein function (such as Bcl-XL and/or Mcl-1 ) including proliferative conditions such as cancer, optionally in combination with another agent.
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Page/Page column 79; 80

(2010/04/06)

PROCESS FOR PREPARING RHODANINE-3-ACETIC ACID: A KEY INTERMEDIATED OF EPALRESTAT
A process for preparation of (4-oxo-2-thioxo-1,3-thiazolidin-3-yl) acetic acid comprising: (a) reaction of compound of formula (VIII) wherein Y is Cl, Br, I, OTs, OMs and R is C1-8 alkyl, benzyl, cycloalkyl, phenyl, substituted phenyl and their like; with a compound of formula (VIIIA) wherein M is K, Na or Li, preferably K; R1 is C1-4 alkyl, benzyl, C1-C8 cycloalkyl, phenyl and their like, in aqueous medium to give a compound of formula (IX) (b) cyclizing a compound of formula (IX) using a base to give a compound of formula (X) in a solvent. (c) hydrolyzing (X) using aqueous mineral acid.
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Page/Page column 10-11

(2008/06/13)

N-substituted heterocycles for the treatment of hypercholesteremia, dyslipidemia and other metabolic disorders; cancer, and other diseases
The present invention relates to certain compounds of Formula (I) which can be useful in the treatment of diseases, such as, cancer, metabolic disorders, Type 2 Diabetes, dyslipidemia and/or hyperchloesterolemia:
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(2008/06/13)

Arylalkylidene rhodanine with bulky and hydrophobic functional group as selective HCV NS3 protease inhibitor
Arylalkylidene rhodanines 2(a-d) inhibit HCV NS3 protease at moderate concentrations. They are better inhibitors of other serine proteases such as chymotrypsin and plasmin. However, the selectivity of arylmethylidene rhodanines (8a, 9a) with bulkier and more hydrophobic functional groups increases by 13- and 25-fold towards HCV NS3 protease respectively.
Sing, Wan Theng,Lee, Cheng Leng,Yeo, Su Ling,Lim, Siew Pheng,Sim, Mui Mui
p. 91 - 94
(2007/10/03)