- Molecular Docking Studies and Synthesis of Amino-oxy-diarylquinoline Derivatives as Potent Non-nucleoside HIV-1 Reverse Transcriptase Inhibitors
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In this study, amino-oxy-diarylquinolines were designed using structure-guided molecular hybridization strategy and fusing of the pharmacophore templates of nevirapine (NVP), efavirenz (EFV), etravirine (ETV, TMC125) and rilpivirine (RPV, TMC278). The anti-HIV-1 reverse transcriptase (RT) activity was evaluated using standard ELISA method, and the cytotoxic activity was performed using MTT and XTT assays. The primary bioassay results indicated that 2-amino-4-oxy-diarylquinolines possess moderate inhibitory properties against HIV-1 RT. Molecular docking results showed that 2-amino-4-oxy-diarylquinolines 8(a-d) interacted with the Lys101 and His235 residue though hydrogen bonding and interacted with Tyr318 residue though π-π stacking in HIV-1 RT. Furthermore, 8a and 8d were the most potent anti-HIV agents among the designed and synthesized compounds, and their inhibition rates were 34.0% and 39.7% at 1 μM concentration. Interestingly, 8a was highly cytotoxicity against MOLT-3 (acute lymphoblastic leukemia), with an IC 50 of 4.63±0.62 μg/mL, which was similar with that in EFV and TMC278 (IC 50 7.76±0.37 and 1.57±0.20 μg/ml, respectively). Therefore, these analogs of the synthesized compounds can serve as excellent bases for the development of new anti-HIV-1 agents in the near future.
- Makarasen, Arthit,Kuno, Mayuso,Patnin, Suwicha,Reukngam, Nanthawan,Khlaychan, Panita,Deeyohe, Sirinya,Intachote, Pakamas,Saimanee, Busakorn,Sengsai, Suchada,Boonsri, Pornthip,Chaivisuthangkura, Apinya,Sirithana, Wandee,Techasakul, Supanna
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Read Online
- A Selective and Orally Bioavailable Quinoline-6-Carbonitrile-Based Inhibitor of CDK8/19 Mediator Kinase with Tumor-Enriched Pharmacokinetics
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Senexins are potent and selective quinazoline inhibitors of CDK8/19 Mediator kinases. To improve their potency and metabolic stability, quinoline-based derivatives were designed through a structure-guided strategy based on the simulated drug–target dockin
- Zhang, Li,Cheng, Chen,Li, Jing,Wang, Lili,Chumanevich, Alexander A.,Porter, Donald C.,Mindich, Aleksei,Gorbunova, Svetlana,Roninson, Igor B.,Chen, Mengqian,McInnes, Campbell
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p. 3420 - 3433
(2022/02/16)
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- AKT3 MODULATORS
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Compounds of Formula la, lb, or Ic, (Ia); (Ib); or (Ic), are described, where the various substituents are defined herein. The compounds can modulate a property or effect of Akt3 in vitro or in vivo, and can also be used, individually or in combination with other agents, in the prevention or treatment of a variety of conditions. Methods for synthesizing the compounds are described. Pharmaceutical compositions and methods of using these compounds or compositions, individually or in combination with other agents or compositions, in the prevention or treatment of a variety of conditions are also described.
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- AKT3 MODULATORS
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Compounds of Formula la, lb, or Ic, are described, where the various substituents are defined herein. The compounds can modulate a property or effect of Akt3 in vitro or in vivo, and can also be used, individually or in combination with other agents, in the prevention or treatment of a variety of conditions. Methods for synthesizing the compounds are described. Pharmaceutical compositions and methods of using these compounds or compositions, individually or in combination with other agents or compositions, in the prevention or treatment of a variety of conditions are also described.
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- QUINOLINE-BASED COMPOUNDS AND METHODS OF INHIBITING CDK8/19
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Disclosed herein are quinoline-based compounds and method for inhibiting CDK8 or CDK19 for the intervention in diseases, disorders, and conditions. The quinoline-based composition comprise substituents at quinoline ring positions 4 and 6, wherein the substituent at position 4 is selected from a substituted or unsubstituted arylalkylamine or a substituted or unsubstituted arylhetrocyclylamine. Pharmaceutical compositions comprising the substituted qunioline compositions, methods of inhibiting CDK8 or CDK19, and methods of treating CDK8/19-associated diseases, disorders, or conditions are also disclosed.
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Paragraph 0108; 0117-0118; 0124; 0135
(2020/03/09)
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- Visible-Light-Photocatalyzed Reductions of N-Heterocyclic Nitroaryls to Anilines Utilizing Ascorbic Acid Reductant
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A photoreductive protocol utilizing [Ru(bpy)3]2+ photocatalyst, blue light LEDs, and ascorbic acid (AscH2) has been developed to reduce nitro N-heteroaryls to the corresponding anilines. Based on experimental and computational results and previous studies, we propose that the reaction proceeds via proton-coupled electron transfer between AscH2, photocatalyst, and the nitro N-heteroaryl. The method offers a green catalytic procedure to reduce, e.g., 4-/8-nitroquinolines to the corresponding aminoquinolines, substructures present in important antimalarial drugs.
- Todorov, Aleksandar R.,Aikonen, Santeri,Muuronen, Mikko,Helaja, Juho
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p. 3764 - 3768
(2019/05/24)
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- 2, 6-Di-Nitrogen-Containing Substituted Purine Derivative, And Preparation Method, Pharmaceutical Composition And Use Thereof
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The present invention provides a 2, 6-di-nitrogen-containing substituted purine derivative having a formula (I) structure, or pharmaceutical salt or hydrate thereof, and preparation method and use thereof. The compound is broad spectrum anticancer, low to
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- Further studies on bis-charged tetraazacyclophanes as potent inhibitors of small conductance Ca2+-activated K+ channels
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Previously, quinolinium-based tetraazacyclophanes, such as UCL 1684 and UCL 1848, have been shown to be extraordinarily sensitive to changes in chemical structure (especially to the size of the cyclophane system) with respect to activity as potent non-peptidic blockers of the small conductance Ca 2+-activated K+ ion channels (SKCa). The present work has sought to optimize the structure of the linking chains in UCL 1848. We report the synthesis and SKCa channel-blocking activity of 29 analogues of UCL 1848 in which the central CH2 of UCL 1848 is replaced by other groups X or Y = O, S, CF2, CO, CHOH, CC, CHCH, CHMe to explore whether subtle changes in bond length or flexibility can improve potency still further. The possibility of improving potency by introducing ring substituents has also been explored by synthesizing and testing 25 analogues of UCL 1684 and UCL 1848 with substituents (NO2, NH2, CF 3, F, Cl, CH3, OCH3, OCF3, OH) in the 5, 6 or 7 positions of the aminoquinolinium rings. As in our earlier work, each compound was assayed for inhibition of the afterhyperpolarization (AHP) in rat sympathetic neurons, an action mediated by the SK3 subtype of the SK Ca channel. One of the new compounds (39, R7 = Cl, UCL 2053) is twice as potent as UCL 1848 and UCL 1684: seven are comparable in activity.
- Yang, Donglai,Arifhodzic, Lejla,Ganellin, C. Robin,Jenkinson, Donald H.
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p. 907 - 923
(2013/07/27)
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- Synthesis and biological evaluation of 4-anilinoquinolines as potent inhibitors of epidermal growth factor receptor
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The mutant receptor tyrosine kinase EGFR is a validated and therapeutically amenable target for genotypically selected lung cancer patients. Here we present the synthesis and biological evaluation of a series of 6- and 7-substituted 4-anilinoquinolines as potent type I inhibitors of clinically relevant mutant variants of EGFR. Quinolines 3a and 3e were found to be highly active kinase inhibitors in biochemical assays and were further investigated for their biological effect on EGFR-dependent Ba/F3 cells and non-small cell lung cancer (NSCLC) cell lines.
- Pawar, Vijaykumar G.,Sos, Martin L.,Rode, Haridas B.,Rabiller, Matthias,Heynck, Stefanie,Van Otterlo, Willem A. L.,Thomas, Roman K.,Rauh, Daniel
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supporting information; experimental part
p. 2892 - 2901
(2010/08/05)
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- Development of a fluorescent-tagged kinase assay system for the detection and characterization of allosteric kinase inhibitors
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Kinase disregulation disrupts the intricate network of intracellular signaling pathways and contributes to the onset of diseases such as cancer. Although several kinase inhibitors are on the market, inhibitor selectivity and drug resistance mutations persist as fundamental challenges in the development of effective long-term treatments. Chemical entities binding to less conserved allosteric sites would be expected to offer new opportunities for scaffold development. Because no high-throughput method was previously available, we developed a fluorescence-based kinase binding assay for identifying and characterizing ligands which stabilize the inactive kinase conformation. Here, we present a description of the development and validation of this assay using the serine/threonine kinase p38R. By covalently attaching fluorophores to the activation loop of the kinase, we were able to detect conformational changes and measure the Kd, kon, and koff associated with the binding and dissociation of ligands to the allosteric pocket. We report the SAR of a synthesized focused library of pyrazolourea derivatives, a scaffold known to bind with high affinity to the allosteric pocket of p38R. Additionally, we used protein X-ray crystallography together with our assay to examine the binding and dissociation kinetics to characterize potent quinazoline- and quinoline-based type II inhibitors, which also utilize this binding pocket in p38α. Last, we identified the b-Raf inhibitor sorafenib as a potent low nanomolar inhibitor of p38α and used protein X-ray crystallography to confirm a unique binding mode to the inactive kinase conformation.
- Simard, Jeffrey R.,Getlik, Matthaeus,Gruetter, Christian,Pawar, Vijaykumar,Wulfert, Sabine,Rabiller, Matthias,Rauh, Daniel
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supporting information; experimental part
p. 13286 - 13296
(2010/01/30)
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- Contrast agents for myocardial perfusion imaging
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The present disclosure is directed, in part, to compounds and methods for imaging myocardial perfusion, comprising administering to a patient a contrast agent which comprises a compound that binds MC-1, and an imaging moiety, and scanning the patient using diagnostic imaging.
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Page/Page column 61; 62
(2010/02/13)
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- Nitro and amino substitution within the A-ring of 5H-8,9-dimethoxy-5-(2-N, N-dimethylaminoethyl)dibenzo[c,h][1,6]naphthyridin-6-ones: Influence on topoisomerase I-targeting activity and cytotoxicity
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Recently, 5H-8,9-dimethoxy-5-(2-N,N-dimethylaminoethyl)-2,3- methylenedioxydibenzo[c,h][1,6]naphthyridin-6-one, 1, was identified as a TOP1-targeting agent with pronounced antitumor activity. In the present study, the effect on activity of substituting a
- Ruchelman, Alexander L.,Kerrigan, John E.,Li, Tsai-Kun,Zhou, Nai,Liu, Angela,Liu, Leroy F.,LaVoie, Edmond J.
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p. 3731 - 3742
(2007/10/03)
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- NITRO AND AMINO SUBSTITUTED TOPOISOMERASE AGENTS
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The invention provides compounds of formula 1 : wherein R1-R9, W, and X have any of the meanings defined in the specification and their pharmaceutically acceptable salts. The invention also provides pharmaceutical compositions comprising a compound of formula 1, processes for preparing compounds of formula 1, intermediates useful for preparing compounds of formula 1, and therapeutic methods for treating cancer using compounds of formula 1.
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