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Smolobochkin AV, Gazizov AS, Yakhshilikova LJ, Bekrenev DD, Burilov AR, Pudovik MA, Lyubina AP, Amerhanova SK, Voloshina AD. Synthesis and Biological Evaluation of Taurine-Derived Diarylmethane and Dibenzoxanthene Derivatives as Possible Cytotoxic and Antimicrobial Agents. Chem Biodivers 2022; 19:e202100970. [PMID: 35262999 DOI: 10.1002/cbdv.202100970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/08/2022] [Indexed: 11/09/2022]
Abstract
The series of novel taurine-derived diarylmethanes and dibenzoxanthenes was synthesized starting from simple commercially available precursors via modular three-stage approach. All the newly synthesized compounds were screened for in vitro antibacterial and antifungal activity, as well as cytotoxicity towards normal and cancer cell lines. Some of the synthesized compounds exhibited 2-4-fold higher activity against S. aureus, E. faecalis and B. cereus compared with Chloramphenicol. In contrast to Chloramphenicol, the tested compounds also showed bactericidal, rather than bacteriostatic effect, which makes them promising candidates for further studies.
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Affiliation(s)
- Andrey V Smolobochkin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russian Federation
| | - Almir S Gazizov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russian Federation
| | | | - Dmitrii D Bekrenev
- Kazan National Research Technological University, Kazan, Russian Federation
| | - Alexander R Burilov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russian Federation
| | - Michail A Pudovik
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russian Federation
| | - Anna P Lyubina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russian Federation
| | - Syumbelya K Amerhanova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russian Federation
| | - Alexandra D Voloshina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russian Federation
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Tu G, Qin Z, Huo D, Zhang S, Yan A. Fingerprint-based computational models of 5-lipo-oxygenase activating protein inhibitors: Activity prediction and structure clustering. Chem Biol Drug Des 2020; 96:931-947. [PMID: 33058463 DOI: 10.1111/cbdd.13657] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/04/2019] [Accepted: 12/17/2019] [Indexed: 01/24/2023]
Abstract
Inflammatory diseases can be treated by inhibiting 5-lipo-oxygenase activating protein (FLAP). In this study, a data set containing 2,112 FLAP inhibitors was collected. A total of 25 classification models were built by five machine learning algorithms with five different types of fingerprints. The best model, which was built by support vector machine algorithm with ECFP_4 fingerprint had an accuracy and a Matthews correlation coefficient of 0.862 and 0.722 on the test set, respectively. The predicted results were further evaluated by the application domain dSTD-PRO (a distance between one compound to models). Each compound had a dSTD-PRO value, which was calculated by the predicted probabilities obtained from all 25 models. The application domain results suggested that the reliability of predicted results depended mainly on the compounds themselves rather than algorithms or fingerprints. A group of customized 10-bit fingerprint was manually defined for clustering the molecular structures of 2,112 FLAP inhibitors into eight subsets by K-Means. According to the clustering results, most of inhibitors in two subsets (subsets 2 and 4) were highly active inhibitors. We found that aryl oxadiazole/oxazole alkanes, biaryl amino-heteroarenes, two aromatic rings (often N-containing) linked by a cyclobutene group, and 1,2,4-triazole group were typical fragments in highly active inhibitors.
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Affiliation(s)
- Guiping Tu
- State Key Laboratory of Chemical Resource Engineering, Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Zijian Qin
- State Key Laboratory of Chemical Resource Engineering, Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Donghui Huo
- State Key Laboratory of Chemical Resource Engineering, Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Shengde Zhang
- State Key Laboratory of Chemical Resource Engineering, Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Aixia Yan
- State Key Laboratory of Chemical Resource Engineering, Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, Beijing, China
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One-Pot Synthesis of Novel Dibenzoxanthenes, Diarylbutanes, and Calix[4]resorcinarenes via Consecutive Pyrrolidine Ring-Closure/Ring-Opening Reactions. J CHEM-NY 2019. [DOI: 10.1155/2019/3424319] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Herein, we report the approach to the otherwise hardly accessible dibenzoxanthenes, diarylbutanes, and calix[4]resorcinarenes possessing urea moieties based on the reaction of N-(4,4-diethoxybutyl)ureas with electron-rich aromatics in strongly acidic media. Unlike the previously developed methods, the proposed approach benefits from one-pot procedure and allows to obtain the target compounds with much higher yields.
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Prasher P, Mudila H, Sharma M, Khati B. Developmental perspectives of the drugs targeting enzyme-instigated inflammation: a mini review. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02315-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Saroj Devi N, Shanmugam R, Ghorai J, Ramanan M, Anbarasan P, Doble M. Ligand-based Modeling for the Prediction of Pharmacophore Features for Multi-targeted Inhibition of the Arachidonic Acid Cascade. Mol Inform 2017; 37. [PMID: 28991413 DOI: 10.1002/minf.201700073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 09/21/2017] [Indexed: 01/22/2023]
Abstract
The single-target drugs against the arachidonic acid inflammatory pathway are associated with serious side effects, hence, as a first step towards multi-target drugs, we have studied the pharmacophoric features common to the inhibitors of 5-lipoxygenase-activating protein (FLAP), microsomal prostaglandin E-synthase 1 (mPGES-1) and leukotriene A4 hydrolase (LTA4H). FLAP and mPGES-1 shared subfamily-specific positions (SSPs) and four mPGES-1 inhibitors binding to them mapped onto the pharmacophore derived from FLAP inhibitors (Ph-FLAP). The reactions of mPGES-1 and LTA4H had high structural similarity. The pharmacophore derived from two substrate mimic inhibitors of LTA4H (Ph-LTA4H) also mapped onto three mPGES-1 inhibitors. Screening of in-house database for Ph-FLAP and Ph-LTA4H identified one compound, C1. It inhibited the production of the mPGES-1 product, prostaglandin E2 (PGE2) by 97.8±1.6 % at 50 μM in HeLa cells and can be a starting point for designing molecules inhibiting all three targets simultaneously.
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Affiliation(s)
- Nisha Saroj Devi
- Bioengineering and Drug Design Lab, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036
| | - Rajasekar Shanmugam
- CYB 104A, Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036
| | - Jayanta Ghorai
- CYB 104A, Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036
| | - Meera Ramanan
- Bioengineering and Drug Design Lab, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036
| | - Pazhamalai Anbarasan
- CYB 104A, Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036
| | - Mukesh Doble
- Bioengineering and Drug Design Lab, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036
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Drug discovery approaches targeting 5-lipoxygenase-activating protein (FLAP) for inhibition of cellular leukotriene biosynthesis. Eur J Med Chem 2017; 153:34-48. [PMID: 28784429 DOI: 10.1016/j.ejmech.2017.07.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 06/29/2017] [Accepted: 07/12/2017] [Indexed: 11/23/2022]
Abstract
Leukotrienes are proinflammatory lipid mediators associated with diverse chronic inflammatory diseases such as asthma, COPD, IBD, arthritis, atherosclerosis, dermatitis and cancer. Cellular leukotrienes are produced from arachidonic acid via the 5-lipoxygenase pathway in which the 5-lipoxygenase activating protein, also named as FLAP, plays a critical role by operating as a regulatory protein for efficient transfer of arachidonic acid to 5-lipoxygenase. By blocking leukotriene production, FLAP inhibitors may behave as broad-spectrum leukotriene modulators, which might be of therapeutic use for chronic inflammatory diseases requiring anti-leukotriene therapy. The early development of FLAP inhibitors (i.e. MK-886, MK-591, BAY-X-1005) mostly concentrated on asthma cure, and resulted in promising readouts in preclinical and clinical studies with asthma patients. Following the recent elucidation of the 3D-structure of FLAP, development of new inhibitor chemotypes is highly accelerated, eventually leading to the evolution of many un-drug-like structures into more drug-like entities such as AZD6642 and BI665915 as development candidates. The most clinically advanced FLAP inhibitor to date is GSK2190918 (formerly AM803) that has successfully completed phase II clinical trials in asthmatics. Concluding, although there are no FLAP inhibitors reached to the drug approval phase yet, due to the rising number of indications for anti-LT therapy such as atherosclerosis, FLAP inhibitor development remains a significant research field. FLAP inhibitors reviewed herein are classified into four sub-classes as the first-generation FLAP inhibitors (indole and quinoline derivatives), the second-generation FLAP inhibitors (diaryl-alkanes and biaryl amino-heteroarenes), the benzimidazole-containing FLAP inhibitors and other FLAP inhibitors with polypharmacology for easiness of the reader. Hence, we meticulously summarize how FLAP inhibitors historically developed from scratch to their current advanced state, and leave the reader with a positive view that a FLAP inhibitor might soon reach to the need of patients who may require anti-LT therapy.
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Discovery of the Novel Oxadiazole-Containing 5-Lipoxygenase Activating Protein (FLAP) Inhibitor BI 665915. ACTA ACUST UNITED AC 2016. [DOI: 10.1021/bk-2016-1239.ch004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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A facile synthesis and application of ethyl 6-(bromomethyl)-[1,3]dioxolo[4,5-g]quinoline-7-carboxylate. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-014-1581-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Hydrogenation of bis-α,β-unsaturated enones mediated by filamentous fungi. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2015. [DOI: 10.1016/j.bcab.2015.03.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Takahashi H, Riether D, Bartolozzi A, Bosanac T, Berger V, Binetti R, Broadwater J, Chen Z, Crux R, De Lombaert S, Dave R, Dines JA, Fadra-Khan T, Flegg A, Garrigou M, Hao MH, Huber J, Hutzler JM, Kerr S, Kotey A, Liu W, Lo HY, Loke PL, Mahaney PE, Morwick TM, Napier S, Olague A, Pack E, Padyana AK, Thomson DS, Tye H, Wu L, Zindell RM, Abeywardane A, Simpson T. Synthesis, SAR, and Series Evolution of Novel Oxadiazole-Containing 5-Lipoxygenase Activating Protein Inhibitors: Discovery of 2-[4-(3-{(R)-1-[4-(2-Amino-pyrimidin-5-yl)-phenyl]-1-cyclopropyl-ethyl}-[1,2,4]oxadiazol-5-yl)-pyrazol-1-yl]-N,N-dimethyl-acetamide (BI 665915). J Med Chem 2015; 58:1669-90. [DOI: 10.1021/jm501185j] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | - Rebecca Crux
- Evotec, 114 Innovation
Drive, Milton Park, Abingdon, Oxfordshire OX14 4RZ, United Kingdom
| | | | | | - Jonathon A. Dines
- Evotec, 114 Innovation
Drive, Milton Park, Abingdon, Oxfordshire OX14 4RZ, United Kingdom
| | | | - Adam Flegg
- Evotec, 114 Innovation
Drive, Milton Park, Abingdon, Oxfordshire OX14 4RZ, United Kingdom
| | - Michael Garrigou
- Evotec, 114 Innovation
Drive, Milton Park, Abingdon, Oxfordshire OX14 4RZ, United Kingdom
| | | | | | | | | | - Adrian Kotey
- Evotec, 114 Innovation
Drive, Milton Park, Abingdon, Oxfordshire OX14 4RZ, United Kingdom
| | | | | | - Pui Leng Loke
- Evotec, 114 Innovation
Drive, Milton Park, Abingdon, Oxfordshire OX14 4RZ, United Kingdom
| | | | | | - Spencer Napier
- Evotec, 114 Innovation
Drive, Milton Park, Abingdon, Oxfordshire OX14 4RZ, United Kingdom
| | | | | | | | | | - Heather Tye
- Evotec, 114 Innovation
Drive, Milton Park, Abingdon, Oxfordshire OX14 4RZ, United Kingdom
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Ferguson AD. Structure-based drug design on membrane protein targets: human integral membrane protein 5-lipoxygenase-activating protein. Methods Mol Biol 2012; 841:267-290. [PMID: 22222457 DOI: 10.1007/978-1-61779-520-6_12] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Leukotrienes are biologically active lipid metabolites of arachidonic acid that are involved in inflammation and play a significant role in respiratory and cardiovascular disease. The integral nuclear membrane protein 5-lipoxygenase-activating protein (FLAP) is essential for leukotriene biosynthesis in response to cellular activation. The crystal structures of human FLAP with two inhibitors were recently determined. Inhibitors are bound within the lipid-exposed portion of FLAP, and the unexpected location of the inhibitor-binding site suggests a transport mechanism for arachidonic acid and provides functional insights into leukotriene biosynthesis. This chapter describes how this human integral membrane crystal structure was solved by pushing the limits of low-resolution structure determination and refinement, demonstrating how a low-resolution structure can impact biology and chemistry, and discusses future opportunities for structure-based drug design for this therapeutic target.
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12
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Tavridou A, Manolopoulos VG. Inhibitors of 5-lipoxygenase activating protein: WO 2008/030369. Expert Opin Ther Pat 2010; 19:1473-6. [PMID: 19456278 DOI: 10.1517/13543770903008569] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND 5-Lipoxygenase activating protein (FLAP) has been implicated in a number of different pathophysiological conditions owing to its involvement in leukotriene synthesis. Development of FLAP inhibitors has attracted considerable attention in recent years owing to genetic data supporting their potential as a valid pharmacological approach in prevention or treatment of atherosclerotic disease. OBJECTIVE/METHOD Since 2005, among other companies, Merck applied for several FLAP inhibitor patents. Patent WO 2008/030369 is the most recent and discloses novel molecules that act as potent inhibitors of FLAP. These compounds are claimed to be useful in the treatment of atherosclerosis, asthma, symptoms of allergic rhinitis and chronic obstructive pulmonary disease either in monotherapy or in combination with established treatments for the above-mentioned disorders. Although data for the potency of representative molecules from the current patent are reported, it is difficult to compare these compounds with previously described compounds. CONCLUSION Two FLAP inhibitors are already in clinical development for the treatment of respiratory and atherosclerotic disease by other pharmaceutical companies. Based on the in vitro activities of representative tested compounds from this patent, it is probable that these agents could be of therapeutic value but further preclinical studies are needed to evaluate their therapeutic potential and safety before clinical development.
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Affiliation(s)
- Anna Tavridou
- Lab of Pharmacology, Medical School, Democritus University of Thrace, Dragana Campus, Alexandroupolis, Greece.
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Cheng MS, Ma DD, Sha Y, Li F, Ren J. A New Synthesis of Novel Tricyclic 2(5H)-Furanone Heterocycles from 3,4,5-Trichloro-2(5H)-furanone. HETEROCYCLES 2010. [DOI: 10.3987/com-10-11923] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Matsuda T, Shigeno M, Murakami M. Palladium-Catalyzed Sequential Carbon−Carbon Bond Cleavage/Formation Producing Arylated Benzolactones. Org Lett 2008; 10:5219-21. [DOI: 10.1021/ol802218a] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takanori Matsuda
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615−8510, Japan
| | - Masanori Shigeno
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615−8510, Japan
| | - Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615−8510, Japan
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Aitipamula S, Nangia A. Ladder and Hexagonal Hydrogen-bond Networks from a Self-complementary H-shaped Tecton. Supramol Chem 2006. [DOI: 10.1080/10610270412331328880] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
| | - Ashwini Nangia
- a School of Chemistry , University of Hyderabad , Hyderabad, 500 046, India
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Xu Y, Shi J, Yamamoto N, Moss JA, Vogt PK, Janda KD. A credit-card library approach for disrupting protein-protein interactions. Bioorg Med Chem 2005; 14:2660-73. [PMID: 16384710 DOI: 10.1016/j.bmc.2005.11.052] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2005] [Accepted: 11/23/2005] [Indexed: 10/25/2022]
Abstract
Protein-protein interfaces are prominent in many therapeutically important targets. Using small organic molecules to disrupt protein-protein interactions is a current challenge in chemical biology. An important example of protein-protein interactions is provided by the Myc protein, which is frequently deregulated in human cancers. Myc belongs to the family of basic helix-loop-helix leucine zipper (bHLH-ZIP) transcription factors. It is biologically active only as heterodimer with the bHLH-ZIP protein Max. Herein, we report a new strategy for the disruption of protein-protein interactions that has been corroborated through the design and synthesis of a small parallel library composed of 'credit-card' compounds. These compounds are derived from a planar, aromatic scaffold and functionalized with four points of diversity. From a 285 membered library, several hits were obtained that disrupted the c-Myc-Max interaction and cellular functions of c-Myc. The IC50 values determined for this small focused library for the disruption of Myc-Max dimerization are quite potent, especially since small molecule antagonists of protein-protein interactions are notoriously difficult to find. Furthermore, several of the compounds were active at the cellular level as shown by their biological effects on Myc action in chicken embryo fibroblast assays. In light of our findings, this approach is considered a valuable addition to the armamentarium of new molecules being developed to interact with protein-protein interfaces. Finally, this strategy for disrupting protein-protein interactions should prove applicable to other families of proteins.
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Affiliation(s)
- Yang Xu
- Department of Chemistry and Immunology, The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla CA 92037, USA
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Aitipamula S, Nangia A. Guest-Induced Supramolecular Isomerism in Inclusion Complexes of T-Shaped Host 4,4-Bis(4′-hydroxyphenyl)cyclohexanone. Chemistry 2005; 11:6727-42. [PMID: 16130157 DOI: 10.1002/chem.200500400] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The T-shaped host molecule 4,4-bis(4'-hydroxyphenyl)cyclohexanone (1) has an equatorial phenol group and a cyclohexanone group along the arms and an axial phenol ring as the stem. The equatorial phenyl ring adopts a "shut" or "open" conformation, like a windowpane, depending on the size of the guest (phenol or o/m-cresol), for the rectangular voids of the hydrogen-bonded ladder host framework. The adaptable cavity of host 1 expands to 11x15-18 A through the inclusion of water with the larger cresol and halophenol guests (o-cresol, m-cresol, o-chlorophenol, and m-bromophenol) compared with a size of 10x13 A for phenol and aniline inclusion. The ladder host framework of 1 is chiral (P2(1)) with phenol, whereas the inclusion of isosteric o- and m-fluorophenol results in a novel polar brick-wall assembly (7x11 A voids) as a result of auxiliary C-H...F interactions. The conformational flexibility of strong O-H...O hydrogen-bonding groups (host 1, phenol guest), the role of guest size (phenol versus cresol), and weak but specific intermolecular interactions (herringbone T-motif, C-H...F interactions) drive the crystallization of T-host 1 towards 1D ladder and 2D brick-wall structures, that is, supramolecular isomerism. Host 1 exhibits selectivity for the inclusion of aniline in preference to phenol as confirmed by X-ray diffraction, 1H NMR spectroscopy, and thermogravimetry-infrared (TG-IR) analysis. The T(onset) value (140 degrees C) of aniline in the TGA is higher than those of phenol and the higher-boiling cresol guests (T(onset)=90-110 degrees C) because the former structure has more O-H...N/N-H...O hydrogen bonds than the clathrate of 1 with phenol which has O-H...O hydrogen bonds. Guest-binding selectivity for same-sized phenol/aniline molecules as a result of differences in hydrogen-bonding motifs is a notable property of host 1. Host-guest clathrates of 1 provide an example of spontaneous chirality evolution during crystallization and a two-in-one host-guest crystal (phenol and aniline), and show how weak C-H...F interactions (o- and m-fluorophenol) can change the molecular arrangement in strongly hydrogen-bonded crystal structures.
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Michaelidou AS, Hadjipavlou-Litina D. Nonsteroidal Anti-Inflammatory Drugs (NSAIDs): A Comparative QSAR Study. Chem Rev 2005; 105:3235-71. [PMID: 16159152 DOI: 10.1021/cr040708m] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- A S Michaelidou
- Department of Pharmaceutical Chemistry, School of Pharmacy, Aristotelian University of Thessaloniki, Thessaloniki 54124, Greece
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19
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Abele E, Abele R, Rubina K, Lukevics E. Quinoline Oximes: Synthesis, Reactions, and Biological Activity. (Review). Chem Heterocycl Compd (N Y) 2005. [DOI: 10.1007/s10593-005-0119-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kuchař M, Kmoníček V, Panajotová V, Jandera A, Brunová B, Junek R, Bucharová V, Čejka J, Šatinský D. Derivatives of (Phenylsulfanyl)benzoic Acids with Multiple Antileukotrienic Activity. ACTA ACUST UNITED AC 2004. [DOI: 10.1135/cccc20042098] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A series of derivatives of (phenylsulfanyl)benzoic acids bearing quinoline, 2,4-dihydroxy-3-propylacetophenone and 2,4-difluorobiphenyl moieties were prepared and their antileukotrienic activities evaluated. Some of the compounds were found to display multiple antileukotrienic effect in the inhibition of LTB4biosynthesis, binding to LTD4and LTB4receptors, superior to the standards (zileuton and zafirlukast) used. The compounds had an antiinflammatory effect, manifested with quinoline derivatives by a significant inhibition of bronchospasm induced by LTD4and/or albumin. The results of regression analysis correspond to the observation that the most active compounds belong to quinoline derivatives with the lowest lipophilicity. X-ray analysis of the quinoline compounds revealed that an intramolecular hydrophobic interaction of their aromatic rings does not occur in the solid state.
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Aitipamula S, Thallapally PK, Thaimattam R, Jaskólski M, Desiraju GR. Topological equivalences between organic and coordination polymer crystal structures: an organic ladder formed with three-connected molecular and supramolecular synthons. Org Lett 2002; 4:921-4. [PMID: 11893186 DOI: 10.1021/ol017284s] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[structure: see text] Crystal engineering of an organic ladder can be achieved with a T-shaped molecule, 4,4-bis(4'-hydroxyphenyl)-1-cyclohexanol, having three hydroxyl functionalities that can form O-H...O hydrogen-bonded helices. The topology of this network structure finds a parallel in three-connected coordination polymers.
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Cardoso CR, de Brito FCF, da Silva KCM, de Miranda ALP, Fraga CAM, Barreiro EJ. Design, synthesis and pharmacological evaluation of novel pyrazolo[3,4-b]thieno[2,3-d]pyridine acid derivatives: a new class of anti-inflammatory and anti-platelet agents. Bioorg Med Chem Lett 2002; 12:9-12. [PMID: 11738562 DOI: 10.1016/s0960-894x(01)00651-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A series of pyrazolo[3,4-b]thieno[2,3-d]pyridine alkanoic acid derivatives has been synthesized and evaluated as thromboxane synthetase inhibitors and leukotriene D(4) receptor antagonists. The glutaric acid derivative LASSBio341 (6) was shown to be active in arachidonic acid-induced platelet aggregation (IC(50)=0.14 microM) and inhibition of the contraction of guinea pig tracheal strip induced with LTD(4) (IC(50) = 43.7 microM), displaying still in vivo anti-inflammatory profile.
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Affiliation(s)
- Carla R Cardoso
- Instituto de Química, Universidade Federal do Rio de Janeiro, 21949-900, RJ, Rio de Janeiro, Brazil
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