- Curvature-regulated transmembrane anion transport by a trifluoromethylated bisbenzimidazole
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In this paper, we demonstrate that modification of anion-transport active 1,3-bis(benzimidazol-2-yl)benzene with strongly electron-withdrawing trifluoromethyl and nitro groups leads to a dramatic increase in the anionophoric activity, and the activity may
- Hong, Xiao-Qiao,Xing, Yuan-Yuan,Wang, Zhong-Kun,Mao, Qin-Chao,Chen, Wen-Hua
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- Design, synthesis, and biological characterization of a new class of symmetrical polyamine-based small molecule CXCR4 antagonists
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CXCR4, a well-studied coreceptor of human immunodeficiency virus type 1 (HIV-1) entry, recognizes its cognate ligand SDF-1α (also named CXCL12) which plays many important roles, including regulating immune cells, controlling hematopoietic stem cells, and directing cancer cells migration. These pleiotropic roles make CXCR4 an attractive target to mitigate human disorders. Here a new class of symmetrical polyamines was designed and synthesized as potential small molecule CXCR4 antagonists. Among them, a representative compound 21 (namely HF50731) showed strong CXCR4 binding affinity (mean IC50 = 19.8 nM) in the CXCR4 competitive binding assay. Furthermore, compound 21 significantly inhibited SDF-1α-induced calcium mobilization and cell migration, and blocked HIV-1 infection via antagonizing CXCR4 coreceptor function. The structure-activity relationship analysis, site-directed mutagenesis, and molecular docking were conducted to further elucidate the binding mode of compound 21, suggesting that compound 21 could primarily occupy the minor subpocket of CXCR4 and partially bind in the major subpocket by interacting with residues W94, D97, D171, and E288. Our studies provide not only new insights for the fragment-based design of small molecule CXCR4 antagonists for clinical applications, but also a new and effective molecular probe for CXCR4-targeting biological studies.
- An, Jing,Fang, Xiong,Huang, Lina S.,Huang, Ziwei,Liang, Boqiang,Meng, Qian,Schooley, Robert T.,Wang, Juan,Xu, Yan,Zhang, Chaozai,Zhang, Huijun,Zhang, Xingquan,Zhu, Siyu
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supporting information
(2020/06/03)
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- AMINOGUANIDINE HYDRAZONES AS RETROMER STABILIZERS USEFUL FOR TREATING NEUROLOGICAL DISEASES
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The present invention relates to novel aminoguanidine hydrazone-derivatives of Formula (I) which are effective as retromer stabilizers and useful as neuroprotecting drugs. The invention also relates to pharmaceutical compositions comprising the compounds and their use in therapy and diagnostic.
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Page/Page column 21; 46; 50; 52
(2020/10/20)
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- A Click Chemistry Approach to Developing Molecularly Targeted DNA Scissors
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Nucleic acid click chemistry was used to prepare a family of chemically modified triplex forming oligonucleotides (TFOs) for application as a new gene-targeted technology. Azide-bearing phenanthrene ligands—designed to promote triplex stability and copper binding—were ‘clicked’ to alkyne-modified parallel TFOs. Using this approach, a library of TFO hybrids was prepared and shown to effectively target purine-rich genetic elements in vitro. Several of the hybrids provide significant stabilisation toward melting in parallel triplexes (>20 °C) and DNA damage can be triggered upon copper binding in the presence of added reductant. Therefore, the TFO and ‘clicked’ ligands work synergistically to provide sequence-selectivity to the copper cutting unit which, in turn, confers high stabilisation to the DNA triplex. To extend the boundaries of this hybrid system further, a click chemistry-based di-copper binding ligand was developed to accommodate designer ancillary ligands such as DPQ and DPPZ. When this ligand was inserted into a TFO, a dramatic improvement in targeted oxidative cleavage is afforded.
- Carell, Thomas,Crisp, Antony L.,Kellett, Andrew,Lauria, Teresa,Müller, Markus,McKee, Vickie,Slator, Creina,Stazzoni, Samuele
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p. 16782 - 16792
(2020/11/30)
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- Exploring London Dispersion and Solvent Interactions at Alkyl–Alkyl Interfaces Using Azobenzene Switches
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Interactions on the molecular level control structure as well as function. Especially interfaces between innocent alkyl groups are hardly studied although they are of great importance in larger systems. Herein, London dispersion in conjunction with solvent interactions between linear alkyl chains was examined with an azobenzene-based experimental setup. Alkyl chains in all meta positions of the azobenzene core were systematically elongated, and the change in rate for the thermally induced Z→E isomerization in n-decane was determined. The stability of the Z-isomer increased with longer chains and reached a maximum for n-butyl groups. Further elongation led to faster isomerization. The origin of the intramolecular interactions was elaborated by various techniques, including 1H NOESY NMR spectroscopy. The results indicate that there are additional long-range interactions between n-alkyl chains with the opposite phenyl core in the Z-state. These interactions are most likely dominated by attractive London dispersion. This work provides rare insight into the stabilizing contributions of highly flexible groups in an intra- as well as an intermolecular setting.
- Strauss, Marcel A.,Wegner, Hermann A.
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p. 18552 - 18556
(2019/11/19)
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- Synthesis, anionophoric activity and apoptosis-inducing bioactivity of benzimidazolyl-based transmembrane anion transporters
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In this paper we show that a series of 1,3-bis(benzimidazol-2-yl)benzene (m-Bimbe) derivatives exhibit excellent performance as transmembrane anion transporters with anticancer activity. The transport efficiency of m-Bimbe and its derivatives has been fir
- Yu, Xi-Hui,Peng, Chen-Chen,Sun, Xiao-Xiao,Chen, Wen-Hua
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supporting information
p. 115 - 125
(2018/05/03)
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- Based on hydroxyl-terminated polybutadiene bonding system containing can be room temperature curing agent and its solidified and preparation method (by machine translation)
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The invention discloses a method based on a hydroxyl-containing polybutadiene adhesive system can be room temperature curing agent, namely 5 - nitrobenzene - 1, 3 - dinitrile oxide; the preparation method is to 1, 3 - benzene as a starting material, by ni
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Paragraph 0046; 0056; 0066; 0078; 0089; 0095; 0101; 0107
(2019/01/14)
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- SUBSTITUTED BRIDGED UREA ANALOGS AS SIRTUIN MODULATORS
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The present invention relates to novel substituted bridged urea compounds, corresponding related analogs, pharmaceutical compositions and methods of use thereof. Sirtuin-modulating compounds of the present invention may be used for increasing the lifespan of a cell, and treating and/or preventing a wide variety of diseases and disorders, which include, but are not limited to, for example, diseases or disorders related to aging or stress, diabetes, obesity, neurodegenerative diseases, cardiovascular disease, blood clotting disorders, inflammation, cancer, and/or flushing as well as diseases or disorders that would benefit from increased mitochondrial activity. The present invention also related to compositions comprising a sirtuin-modulating compound in combination with another therapeutic agent.
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Paragraph 0863; 0864
(2015/06/10)
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- SUBSTITUTED BRIDGED UREA ANALOGS AS SIRTUIN MODULATORS
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Provided herein are novel substituted bridged urea and related analogs and methods of use thereof. The sirtuin-modulating compounds may be used for increasing the lifespan of a cell, and treating and/or preventing a wide variety of diseases and disorders including, for example, diseases or disorders related to aging or stress, diabetes, obesity, neurodegenerative diseases, cardiovascular disease, blood clotting disorders, inflammation, cancer, and/or flushing as well as diseases or disorders that would benefit from increased mitochondrial activity. Also provided are compositions comprising a sirtuin-modulating compound in combination with another therapeutic agent.
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Page/Page column 169-170
(2014/12/12)
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- From rigid cyclic templates to conformationally stabilized acyclic scaffolds. Part I: The discovery of CCR3 antagonist development candidate BMS-639623 with picomolar inhibition potency against eosinophil chemotaxis
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Conformational analysis of trans-1,2-disubstituted cyclohexane CCR3 antagonist 2 revealed that the cyclohexane linker could be replaced by an acyclic syn-α-methyl-β-hydroxypropyl linker. Synthesis and biological evaluation of mono- and disubstituted propyl linkers support this conformational correlation. It was also found that the α-methyl group to the urea lowered protein binding and that the β-hydroxyl group lowered affinity for CYP2D6. Ab initio calculations show that the α-methyl group governs the spatial orientation of three key functionalities within the molecule. α-Methyl-β-hydroxypropyl urea 31 with a chemotaxis IC50 = 38 pM for eosinophils was chosen to enter clinical development for the treatment of asthma.
- Santella III, Joseph B.,Gardner, Daniel S.,Yao, Wenqing,Shi, Chongsheng,Reddy, Prabhakar,Tebben, Andrew J.,DeLucca, George V.,Wacker, Dean A.,Watson, Paul S.,Welch, Patricia K.,Wadman, Eric A.,Davies, Paul,Solomon, Kimberly A.,Graden, Dani M.,Yeleswaram, Swamy,Mandlekar, Sandhya,Kariv, Ilona,Decicco, Carl P.,Ko, Soo S.,Carter, Percy H.,Duncia, John V.
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p. 576 - 585
(2008/09/19)
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- Polymalonic acids as boneaffinity agents
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The invention relates to novel polymalonic acids which act as bone-affinity agents. Compounds of the formula have a high affinity for bone and are useful in the treatment and prevention of diseases involving bone resorption, particularly osteoporosis, Paget's disease, and malignant hypercalcemia, by delivering a bone resorption or formation active-drug directly to the bone target site.
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