132766-61-1Relevant articles and documents
A conformational and structure-activity relationship study of cytotoxic 3,5-bis(arylidene)-4-piperidones and related N-acryloyl analogues
Dimmock,Padmanilayam,Puthucode,Nazarali,Motaganahalli,Zello,Quail,Oloo,Kraatz,Prisciak,Allen,Santos,Balzarini,De Clercq,Manavathu
, p. 586 - 593 (2001)
A series of 3,5-bis(arylidene)-4-piperidones 1 and related N-acryloyl analogues 2 were prepared as candidate cytotoxic agents with a view to discerning those structural features which contributed to bioactivity. A number of the compounds were markedly cytotoxic toward murine P388 and L1210 leukemic cells and also to human Molt 4/C8 and CEM neoplasms. Approximately 40% of the IC50 values generated were lower than the figures obtained for melphalan. In virtually all cases, the N-acyl compounds were significantly more bioactive than the analogues 1. In general, structure - activity relationships revealed that the cytotoxicity of series 1 was correlated positively with the size of the aryl substituents, while in series 2, a -σ relationship was established. In particular, various angles and interatomic distances were obtained by molecular modeling, and the presence of an acryloyl group on the piperidyl nitrogen atom in series 2 affected the relative locations of the two aryl rings. This observation, along with some differences in distances between various atoms in series 1 and 2, may have contributed to the disparity in cytotoxicity between 1 and 2. The results obtained by X-ray crystallography of representative compounds were mainly in accordance with the observations noted by molecular modeling. Selected compounds interfered with the biosynthesis of DNA, RNA, and protein in murine L1210 cells, while others were shown to cause apoptosis in the human Jurkat leukemic cell line. This study has revealed the potential of these molecules for development as cytotoxic and anticancer agents.
Application of monocarbonyl curcumin compound in preparation of medicine for preventing and treating periodontitis
-
Paragraph 0024-0026; 0032, (2021/06/22)
The invention belongs to the technical field of medicines, and particularly relates to application of a specific monocarbonyl curcumin analogue in preparation of a medicine for preventing and treating periodontitis. Experiments prove that the monocarbonyl curcumin analogues not only can play a better anti-oxidation protection role by activating an Nrf2/HO-1 signal channel, but also can play an anti-inflammatory role by inhibiting release of inflammatory factors TNF alpha and IL1-beta, so that the monocarbonyl curcumin analogues have a remarkable prevention and treatment effect on rat periodontitis, have good potential value and significance for prevention and treatment of periodontitis, and have a good research and development prospect.
Design, synthesis and tumour-selective toxicity of novel 1-[3-{3,5-bis(Benzylidene)-4-oxo-1-piperidino}-3-oxopropyl]-4-piperidone oximes and related quaternary ammonium salts
Aguilera, Renato J.,Amano, Shigeru,Balderrama, Karol S.,Contreras, Lisett,Das, Umashankar,Dimmock, Jonathan R.,Roayapalley, Praveen K.,Sakagami, Hiroshi,Sharma, Rajendra K.
, (2021/12/09)
A novel series of 1-[3-{3,5-bis(benzylidene)-4-oxo-1-piperidino}-3-oxopropyl]-4-piperidone oximes 3a–h and related quaternary ammonium salts 4a–h were prepared as candidate antineoplastic agents. Evaluation against neoplastic Ca9-22, HSC-2 and HSC-4 cells
Novel hybrid molecules of 3,5-bis(benzylidene)-4-piperidones and dichloroacetic acid which demonstrate potent tumour-selective cytotoxicity
Hossain, Mohammad,Das, Swagatika,Das, Umashankar,Doroudi, Alireza,Zhu, Jianfeng,Dimmock, Jonathan R.
supporting information, (2020/01/03)
A novel class of hybrid molecules 2a-o was designed as candidate antineoplastic agents from dichloroacetic acid which is a known inhibitor of pyruvate dehydrogenase kinase and a number of cytotoxic 3,5-bis(benzylidene)-4-piperidones 1. In general these new hybrid molecules are potent cytotoxins towards human HCT116 colon cancer cells. A number of lead molecules emerged having the IC50 values in the double digit nanomolar range. Most of these compounds are less toxic to human CRL1790 non-malignant colon cells and hence the selectivity index (SI) figures for most of the compounds are huge; in the case of 2c-g, m, n, the SI values are in excess of 100. Compounds 2g, 2j, 2m and 2n displayed >100-fold higher potency than the reference drug 5-FU. Quantitative structure-activity relationships revealed that the potencies of the compounds in series 2 increase as the magnitude of the Hammett σ and Taft σ* values rise. X-ray crystallographic of a representative compound 2c revealed various structural features which may influence cytotoxic potencies. Several representative compounds lowered the mitochondrial membrane potential and increased the production of reactive oxygen species in HCT116 cells. A minimal effect was noted in altering the percentage of cells in different phases of the cell cycle. Some future directions have been outlined for analog development.
[Bmim]br accelerated one-pot three-component cascade protocol for the construction of spirooxindole?pyrrolidine heterocyclic hybrids
Al-Thamili, Dhaifallah M.,Almansour, Abdulrahman I.,Arumugam, Natarajan,Dege, Necmi,Kumar, Raju Suresh
, (2020/10/27)
Our synthetic approach for the assembly of structurally complex spirooxindole heterocyclic hybrids was based on an ionic liquid, [bmim]Br mediated one-pot three-component cascade reaction strategy involving 1,3-dipolar cycloaddition reaction of N-1-(2-pyridinylmethyl)-3, 5-bis[(E)-arylmethylidene]tetrahydro-4(1H)-pyridinones and azomethine ylide generated in situ from isatin and L-phenyl alanine, affording a series of spirooxindole–pyrrolidine heterocyclic hybrids in good-to-excellent yields. In addition to serving as the reaction medium, [bmim]Br also functioned as a catalyst in this cycloaddition reaction and hence accelerated the reaction rate affording the cycloadducts in short reaction time.
INHIBITORS OF THE WNT/BETA-CATENIN PATHWAY
-
Page/Page column 46, (2019/08/26)
The present disclosure relates to compounds that are capable of modulating the WNT/Beta-Catenin pathway. The disclosure further relates to methods of treating colorectal cancer and other WNT/Beta-Catenin mediated cancers.
Highly functionalized 2-amino-4H-pyrans as potent cholinesterase inhibitors
Kumar, Raju Suresh,Almansour, Abdulrahman I.,Arumugam, Natarajan,Al-thamili, Dhaifallah M.,Basiri, Alireza,Kotresha,Manohar, Thota Sai,Venketesh,Asad, Mohammad,Asiri, Abdullah M.
, p. 134 - 143 (2018/08/21)
Novel highly functionalized 2-amino-4H-pyrans were achieved in excellent yields under simple grinding at ambient temperature and were assessed for their potential for treating Alzheimer's disease (AD). The 2-amino-4H-pyran bearing nitro groups on both the aryl rings showed the highest activity, with an IC50 of 1.98 ± 0.09 μM against acetylcholinesterase (AChE) and 10.62 ± 0.21 μM against butyrylcholinesterase (BChE), the inhibition mechanisms on AChE and BChE receptors were revealed by means of molecular docking simulations.
Design and synthesis of new piperidone grafted acetylcholinesterase inhibitors
Basiri, Alireza,Xiao, Michelle,McCarthy, Alec,Dutta, Debashis,Byrareddy, Siddappa N.,Conda-Sheridan, Martin
, p. 228 - 231 (2016/12/27)
Alzheimer's disease (AD) is a neurodegenerative disorder affecting 35?million people worldwide. A common strategy to improve the well-being of AD patients consists on the inhibition of acetylcholinesterase with the concomitant increase of the neurotransmitter acetylcholine at cholinergic synapses. Two series of unreported N-benzylpiperidines 5(a–h) and thiazolopyrimidines 9(a–q) molecules were synthesized and evaluated in vitro for their acetylcholinesterase (AChE) inhibitory activities. Among the newly synthesized compounds, 5h, 9h, 9j, and 9p displayed higher AChE enzyme inhibitory activities than the standard drug, galantamine, with IC50values of 0.83, 0.98, and 0.73?μM, respectively. Cytotoxicity studies of 5h, 9h, 9j, 9n and 9p on human neuroblastoma cells SH-SY5Y, showed no toxicity up to 40?μM concentration. Molecular docking simulations of the active compounds 5h and 9p disclosed the crucial role of π-π-stacking in their binding interaction to the active site AChE enzyme. The presented compounds have potential as AChE inhibitors and potential AD drugs.
An expedient synthesis, acetylcholinesterase inhibitory activity, and molecular modeling study of highly functionalized hexahydro-1,6-naphthyridines
Almansour, Abdulrahman I.,Kumar, Raju Suresh,Arumugam, Natarajan,Basiri, Alireza,Kia, Yalda,Ali, Mohamed Ashraf
, (2015/07/01)
A series of hexahydro-1,6-naphthyridines were synthesized in good yields by the reaction of 3,5-bis[(E)-arylmethylidene] tetrahydro-4(1H)-pyridinones with cyanoacetamide in the presence of sodium ethoxide under simple mixing at ambient temperature for 6-10 minutes and were assayed for their acetylcholinesterase (AChE) inhibitory activity using colorimetric Ellman's method. Compound 4e with methoxy substituent at ortho-position of the phenyl rings displayed the maximum inhibitory activity with IC50 value of 2.12 μM. Molecular modeling simulation of 4e was performed using three-dimensional structure of Torpedo californica AChE (TcAChE) enzyme to disclose binding interaction and orientation of this molecule into the active site gorge of the receptor.
Synthesis and antiproliferative activity of cyclic arylidene ketones: a direct comparison of monobenzylidene and dibenzylidene derivatives
Huber, Imre,Zupk, Istvn,Kovcs, Ida J.,Minorics, Renta,Gulys-Fekete, Gergely,Masz, Gbor,Perjsi, Pl
, p. 973 - 981 (2015/02/19)
Abstract To give further insight into the influence of the structural modifications of enones and dienones on their antiproliferative properties, 25 derivatives of enones: (E)-2-benzylidene-1-cyclohexanones, (E)-2-benzylidene-1-tetralones, (E)-2-benzylidene-1-indanone, and dienones: (E,E)-2,5- or 2,6-dibenzylidene-1-cyclanones, (E,E)-3,5-dibenzylidene-4-piperidones were synthesized using a newly developed "one-pot" synthetic method. Due to the fact that all of them have the same aryl substituents (phenyl or 4-chlorophenyl) in the arylidene moiety, it is possible to compare the relevant contribution of the single-point structural modifications (type of ring or N-substitution) on their potency on the basis of their IC 50 values. Their antiproliferative activity was evaluated against the following four human adherent cancer cell lines: HeLa, A431, A2780, and MCF7. The cytotoxicity screen has revealed that the dibenzylidene dienones in general dominate the monobenzylidene enones in this respect. The nitrogen-containing heterocyclic dienones at the same time displayed higher inhibitory properties toward these human carcinoma cell lines compared with their homocyclic dienone analogs. One of the eight newly prepared 4-piperidone derivatives, N-(γ-oxobutyl)-(E,E)-3,5-bis(p-chlorobenzylidene)-4-piperidone is as potent a cell growth inhibitor (IC 50 of 0.438-1.409 μM) as the N-methyl-(E,E)-3,5-bis(p-chlorobenzylidene)-4-piperidone (IC 50 of 0.447-1.048 μM), one of the most active among the previously described compounds in this series. Catalytic hydrogen-transfer isomerization of compounds with two exocyclic benzylidene double bonds to derivatives with endocyclic double bonds results in the complete loss of antiproliferative activity. The structural modifications and 50 % inhibitory concentration (IC 50) values resulted in correlations which can promote the design of more potent derivatives of the 4-piperidone dienones.
