- A new class of symmetric bisbenzimidazole-based DNA minor groove-binding agents showing antitumor activity
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The synthesis and evaluation of the novel head-to-head bisbenzimidazole compound 2,2-bis-[4′-(3″-dimethylamino-1″-propyloxy)phenyl]-5,5-bi-1 H-benzimidazole is described. An X-ray crystallographic study of a complex with the DNA dodecanucleotide sequence d(CGCGAAT-TCGCG) shows the compound bound in the A/T minor groove region of a B-DNA duplex and that the head-to-head bisbenzimidazole motif hydrogen-bonds to the edges of all four consecutive A:T base pairs. The compound showed potent growth inhibition with a mean IC50 across an ovarian carcinoma cell line panel of 0.31 μM, with no significant cross-resistance in two acquired cisplatin-resistant cell lines and a low level of cross-resistance in the P-glycoprotein overexpressing acquired doxorubicin-resistant cell line. Studies with the hollow fiber assay and in vivo tumor xenografts showed some evidence of antitumor activity.
- Mann,Baron,Opoku-Boahen,Johansson,Parkinson,Kelland,Neidle
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- Design, synthesis and biological evaluation of 2-styryl-5-hydroxy-4-pyrone derivatives and analogues as multiple functional agents with the potential for the treatment of Alzheimer's disease
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A novel series of 2-styryl-5-hydroxy-4-pyrone derivatives and analogues were designed and synthesized as H3 receptor antagonism based multitarget-directed ligands (MTDLs) for AD therapy using pharmacophore-combine strategy. The 2-styryl-5-hydro
- Hu, Chenxian,Jiang, Liu,Tang, Li,Zhang, Minkui,Sheng, Rong
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- IMIDAZO [2, 1-F] [1, 2, 4] TRIAZIN-4-AMINE DERIVATIVES AS TLR7 AGONIST
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Disclosed herein is an imidazo [2, 1-f] [1, 2, 4] triazin-4-amine derivative or a stereoisomer thereof, or a pharmaceutically acceptable salt thereof useful as a TLR7 agonist, and a pharmaceutical composition comprising the same. Also disclosed herein is a method of treating cancer using the imidazo [2, 1-f] [1, 2, 4] triazin-4-amine derivative or a stereoisomer thereof, or a pharmaceutically acceptable salt thereof as TLR7 agonist.
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Paragraph 0163-0164
(2020/08/22)
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- Design, synthesis and biological evaluation of novel 4-anlinoquinazoline derivatives as EGFR inhibitors with the potential to inhibit the gefitinib-resistant nonsmall cell lung cancers
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A series of quinazoline derivatives with benzylidene hydrazine carboxamide were designed and synthesised as EGFR inhibitors. Most compounds exhibited exceptional anti-proliferative activity against A549, HepG2, MCF-7 and H1975 cells. Furthermore, six compounds demonstrated excellent inhibition activity against EGFRWT with the IC50 value both less than 2 nM. Among the six compounds, 44 exhibited the strongest activity (0.4 nM) and potently inhibited EGFRL858R/T790M (0.1 μM). Excitingly, the most potent compound 14 showed excellent enzyme inhibitory activity with 6.3 nM and 8.4 nM for both EGFRWT and EGFRT790M/L858R. The result of AO single staining and Annexin V/PI staining showed that the compound 14 and 44 could induce remarkable apoptosis of A549 cells. The compound 14 arrested the cell cycle at the S phase and compound 44 arrested the cell cycle at the G0 phase in A549 cells. These preliminary results demonstrate that compound 14 and 44 may be promising lead compound-targeting EGFR.
- Wang, Caolin,Xu, Shan,Peng, Liang,Zhang, Bingliang,Zhang, Hong,Hu, Yingying,Zheng, Pengwu,Zhu, Wufu
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p. 204 - 218
(2019/01/03)
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- Design, Synthesis, and Structure–Activity Relationship Analysis of Thiazolo[3,2-a]pyrimidine Derivatives with Anti-inflammatory Activity in Acute Lung Injury
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Acute lung injury (ALI) has a high lethality rate, and interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) contribute most to tissue deterioration in cases of ALI. In this study, we designed and synthesized a new series of thiazolo[3,2-a]pyrimidine derivatives based on a previously identified lead compound, and we evaluated their anti-inflammatory activities. Structure–activity relationship studies led to the discovery of two highly potent inhibitors. The two promising compounds were found to inhibit lipopolysaccharide (LPS)-induced IL-6 and TNF-α release in a dose-dependent manner in mouse primary peritoneal macrophages (MPMs). Furthermore, administration of these compounds resulted in lung histopathological improvements and attenuated LPS-induced ALI in vivo. Taken together, these data indicate that these novel thiazolo[3,2-a]pyrimidine derivatives could be developed as candidate drugs for the treatment of ALI.
- Chen, Lingfeng,Jin, Yiyi,Fu, Weitao,Xiao, Siyang,Feng, Chen,Fang, Bo,Gu, Yugui,Li, Chenglong,Zhao, Yunjie,Liu, Zhiguo,Liang, Guang
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supporting information
p. 1022 - 1032
(2017/07/11)
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- SQUALENE COMPOUNDS AS MODULATORS OF LDL-RECEPTOR EXPRESSION
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The present invention relates to compounds that modify low density lipoprotein receptor (LDLR) expression. The compounds have the structural formula I shown below: wherein m, R1, n, R2 and R3 are each as defined herein. The present invention also relates to processes for the preparation of these compounds, to pharmaceutical compositions comprising them, and to their use in the treatment of diseases or disorders associated with elevated levels of low density lipoprotein cholesterol (LDL-C).
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Paragraph 0008
(2016/04/20)
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- PYRAZOLOPYRIMIDIN-2-YL DERIVATIVES AS JAK INHIBITORS
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New pyrazolopyridmiin-2-yl derivatives are disclosed; as well as process for their preparation, pharmaceutical compositions comprising them and their use in therapy as inhibitors of Janus Kinases (JAK).
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Page/Page column 67
(2015/06/25)
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- Blood-brain barrier permeable anticholinesterase aurones: Synthesis, structure-activity relationship, and drug-like properties
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A series of novel aurones bearing amine and carbamate functionalities at various positions (rings A and/or B) of the scaffold was synthesized and evaluated for their acetylcholinesterase and butyrylcholinesterase inhibitory activities. Structure-activity relationship study disclosed several potent submicromolar acetylcholinesterase inhibitors (AChEIs) particularly aurones bearing piperidine and pyrrolidine moieties at ring A or ring B. Bulky groups particularly methoxyls, and carbamate to a lesser extent, at either rings were also prominently featured in these AChEI aurones as exemplified by the trimethoxyaurone 4-3. The active aurones exhibited a lower butyrylcholinesterase inhibition. A 3g€2-chloroaurone 6-3 originally designed to improve the metabolic stability of the scaffold was the most potent of the series. Molecular docking simulations showed these AChEI aurones to adopt favourable binding modes within the active site gorge of the Torpedo californica AChE (TcAChE) including an unusual chlorine-π interaction by the chlorine of 6-3 to establish additional bondings to hydrophobic residues of TcAChE. Evaluation of the potent aurones for their blood-brain barrier (BBB) permeability and metabolic stability using PAMPA-BBB assay and in vitro rat liver microsomes (RLM) identified 4-3 as an aurone with an optimal combination of high passive BBB permeability and moderate CYP450 metabolic stability. LC-MS identification of a mono-hydroxylated metabolite found in the RLM incubation of 4-3 provided an impetus for further improvement of the compound. Thus, 4-3, discovered within this present series is a promising, drug-like lead for the development of the aurones as potential multipotent agents for Alzheimer's disease.
- Liew, Kok-Fui,Chan, Kit-Lam,Lee, Chong-Yew
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p. 195 - 210
(2015/03/18)
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- Synthesis, antimalarial activity and cytotoxic potential of new monocarbonyl analogues of curcumin
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A series of novel monocarbonyl analogues of curcumin have been designed, synthesized and tested for their activity against Molt4, HeLa, PC3, DU145 and KB cancer cell lines. Six of the analogues showed potent cytotoxicity towards these cell lines with IC50 values below 1 μM, which is better than doxorubicin, a US FDA approved drug. Several analogues were also found to be active against both CQ-resistant (W2 clone) and CQ-sensitive (D6) strains of Plasmodium falciparum in an in-vitro antimalarial screening. This level of activity warrants further investigation of the compounds for development as anticancer and antimalarial agents.
- Manohar, Sunny,Khan, Shabana I.,Kandi, Shamseer Kulangara,Raj, Kranthi,Sun, Guojing,Yang, Xiaochuan,Calderon Molina, Angie D.,Ni, Nanting,Wang, Binghe,Rawat, Diwan S.
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p. 112 - 116
(2013/02/23)
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- Synthesis, cytotoxicity and topoisomerase inhibition properties of multifarious aminoalkylated indeno[1,2-c]isoquinolin-5,11-diones
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A number of mono- or diaminoalkylated indeno[1,2-c]isoquinolin-5,11-diones analogs of 1 were synthesized and evaluated for their DNA binding affinities, topoisomerase inhibition properties and antiproliferative activities against human cancer cell lines (
- Ahn, Gang,Schifano-Faux, Nadège,Goossens, Jean-Fran?ois,Baldeyrou, Brigitte,Couture, Axel,Grandclaudon, Pierre,Lansiaux, Amélie,Ryckebusch, Adina
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scheme or table
p. 2259 - 2263
(2011/05/15)
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- Synthesis, DNA binding, and Leishmania topoisomerase inhibition activities of a novel series of anthra[1,2-d]imidazole-6,11-dione derivatives
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Nine novel anthra[1,2-d]imidazole-6,11-diones, differing in their side chain, were synthesized. UV - vis spectroscopy and viscometric titrations of these molecules with duplex DNA were used to assess their binding with DNA. Five of the nine compounds show
- Chaudhuri, Padmaparna,Majumder, Hemanta K.,Bhattacharya, Santanu
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p. 2536 - 2540
(2008/02/02)
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- 2-Aryl benzimidazoles featuring alkyl-linked pendant alcohols and amines as inhibitors of checkpoint kinase Chk2
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A series of benzimidazole compounds containing pendant alcohol and amine moieties was found to be active against checkpoint kinase Chk2. These compounds were prepared to examine a potential hydrogen bond interaction with an active site residue and to inve
- Neff, Danielle K.,Lee-Dutra, Alice,Blevitt, Jonathan M.,Axe, Frank U.,Hack, Michael D.,Buma, Johnathan C.,Rynberg, Raymond,Brunmark, Anders,Karlsson, Lars,Breitenbucher, J. Guy
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p. 6467 - 6471
(2008/09/17)
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- Nanostructured oligo(p-phenylene vinylene)/silicate hybrid films: One-step fabrication and energy transfer studies
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Novel hybrid materials containing silicate and charged oligo(p-phenylene vinylene) (OPV) amphiphiles were fabricated in one step by spin casting using evaporation-induced self assembly. The conjugated segments were substituted with trimethylammonium bromide groups at both termini, and tetraethyl orthosilicate served as the silicate precursor. X-ray diffraction scans of the hybrid films revealed Bragg diffraction peaks with d-spacings of 2.76 and 1.37 nm, indicating the presence of order in the hybrid structure. Optical properties of the hybrid films were characterized by UV-vis absorption and fluorescence spectra, and molecular orientation was characterized by IR spectroscopy. A rhodamine B derivative containing a triethoxysilane group was covalently incorporated into the silicate network of the films during the sol-gel reaction. Relative to disordered polymer films with identical organic composition, the ordered hybrid films revealed significantly enhanced emission from rhodamine B and also fluorescence quenching from OPV segments. These results indicate that the ordered and nanostructured environment leads to highly efficient energy transfer among organic components in these hybrid films.
- Tajima, Keisuke,Li, Liang-Shi,Stupp, Samuel I.
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p. 5488 - 5495
(2007/10/03)
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- OLIGO(P-PHENYLENE VINYLENE) AMPHIPHILES AND METHODS FOR SELF-ASSEMBLY
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Amphiphilic oligo(p-phenylene vinylene) compounds and methods of use en route to self-assembled composites and device fabrication.
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Page/Page column 19
(2008/06/13)
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- Isoquinoline compound melanocortin receptor ligands and methods of using same
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The invention relates to melanocortin receptor ligands and methods of using the ligands to alter or regulate the activity of a melanocortin receptor. The invention further relates to tetrahydroisoquinoline aromatic amines that function as melanocortin receptor ligands and as agents for controlling cytokine-regulated physiologic processes and pathologies, and combinatorial libraries thereof.
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- CNS active compounds
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Compounds of the formula SPC1 Wherein X, R, n and B are as defined herein exhibit antidepressant activity.
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