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Karaki F, Takamori T, Kawakami K, Sakurai S, Hidaka K, Ishii K, Oki T, Sato N, Atsumi N, Ashizawa K, Taguchi A, Ura A, Naruse T, Hirayama S, Nonaka M, Miyano K, Uezono Y, Fujii H. Discovery of 7-Azanorbornane-Based Dual Agonists for the Delta and Kappa Opioid Receptors through an In Situ Screening Protocol. Molecules 2023; 28:6925. [PMID: 37836768 PMCID: PMC10574725 DOI: 10.3390/molecules28196925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 09/28/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
In medicinal chemistry, the copper-catalyzed click reaction is used to prepare ligand candidates. This reaction is so clean that the bioactivities of the products can be determined without purification. Despite the advantages of this in situ screening protocol, the applicability of this method for transmembrane proteins has not been validated due to the incompatibility with copper catalysts. To address this point, we performed ligand screening for the µ, δ, and κ opioid receptors using this protocol. As we had previously reported the 7-azanorbornane skeleton as a privileged scaffold for the G protein-coupled receptors, we performed the click reactions between various 7-substituted 2-ethynyl-7-azanorbornanes and azides. Screening assays were performed without purification using the CellKeyTM system, and the putative hit compounds were re-synthesized and re-evaluated. Although the "hit" compounds for the µ and the δ receptors were totally inactive after purifications, three of the four "hits" for the κ receptor were true agonists for this receptor and also showed activities for the δ receptor. Although false positive/negative results exist as in other screening projects for soluble proteins, this in situ method is effective in identifying novel ligands for transmembrane proteins.
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Affiliation(s)
- Fumika Karaki
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
- Medicinal Research Laboratories, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Taro Takamori
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Koumei Kawakami
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Sae Sakurai
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Kyoko Hidaka
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Kei Ishii
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Tomoya Oki
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Noriko Sato
- Analytical Unit for Organic Chemistry, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Nao Atsumi
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
- Department of Pain Control Research, Jikei University School of Medicine, 3-25-8, Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Karin Ashizawa
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
- Department of Pain Control Research, Jikei University School of Medicine, 3-25-8, Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Ai Taguchi
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
- Department of Pain Control Research, Jikei University School of Medicine, 3-25-8, Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Asuka Ura
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
- Department of Pain Control Research, Jikei University School of Medicine, 3-25-8, Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Toko Naruse
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Shigeto Hirayama
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
- Medicinal Research Laboratories, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Miki Nonaka
- Department of Pain Control Research, Jikei University School of Medicine, 3-25-8, Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Kanako Miyano
- Department of Pain Control Research, Jikei University School of Medicine, 3-25-8, Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Yasuhito Uezono
- Department of Pain Control Research, Jikei University School of Medicine, 3-25-8, Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Hideaki Fujii
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
- Medicinal Research Laboratories, School of Pharmacy, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan
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2
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Ghosh D, Atkinson A, Gibson J, Subbaiahgari H, Ming W, Padgett C, Aiken KS, Landge SM. 1,2,3-Triazoles: Controlled Switches in Logic Gate Applications. SENSORS (BASEL, SWITZERLAND) 2023; 23:7000. [PMID: 37571784 PMCID: PMC10422406 DOI: 10.3390/s23157000] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/28/2023] [Accepted: 08/02/2023] [Indexed: 08/13/2023]
Abstract
A 1,2,3-triazole-based chemosensor is used for selective switching in logic gate operations through colorimetric and fluorometric response mechanisms. The molecular probe synthesized via "click chemistry" resulted in a non-fluorescent 1,4-diaryl-1,2,3-triazole with a phenol moiety (PTP). However, upon sensing fluoride, it TURNS ON the molecule's fluorescence. The TURN-OFF order occurs through fluorescence quenching of the sensor when metal ions, e.g., Cu2+, and Zn2+, are added to the PTP-fluoride ensemble. A detailed characterization using Nuclear Magnetic Resonance (NMR) spectroscopy in a sequential titration study substantiated the photophysical characteristics of PTP through UV-Vis absorption and fluorescence profiles. A combination of fluorescence OFF-ON-OFF sequences provides evidence of 1,2,3-triazoles being controlled switches applicable to multimodal logic operations. The "INH" gate was constructed based on the fluorescence output of PTP when the inputs are F- and Zn2+. The "IMP" and "OR" gates were created on the colorimetric output responses using the probe's absorption with multiple inputs (F- and Zn2+ or Cu2+). The PTP sensor is the best example of the "Write-Read-Erase-Read" mimic.
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Affiliation(s)
- Debanjana Ghosh
- Department of Chemistry and Biochemistry, Georgia Southern University (Statesboro Campus), 521 College of Education Drive, Statesboro, GA 30460-8064, USA; (D.G.)
- Department of Chemistry, Science Building West, Southern Illinois University Edwardsville, Edwardsville, IL 62026-1652, USA
| | - Austin Atkinson
- Department of Chemistry and Biochemistry, Georgia Southern University (Statesboro Campus), 521 College of Education Drive, Statesboro, GA 30460-8064, USA; (D.G.)
| | - Jaclyn Gibson
- Department of Chemistry and Biochemistry, Georgia Southern University (Statesboro Campus), 521 College of Education Drive, Statesboro, GA 30460-8064, USA; (D.G.)
| | - Harini Subbaiahgari
- Department of Chemistry, Science Building West, Southern Illinois University Edwardsville, Edwardsville, IL 62026-1652, USA
| | - Weihua Ming
- Department of Chemistry and Biochemistry, Georgia Southern University (Statesboro Campus), 521 College of Education Drive, Statesboro, GA 30460-8064, USA; (D.G.)
| | - Clifford Padgett
- Department of Chemistry and Biochemistry, Georgia Southern University (Armstrong Campus), 11935 Abercorn Street, Savannah, GA 31419, USA
| | - Karelle S. Aiken
- Department of Chemistry and Biochemistry, Georgia Southern University (Statesboro Campus), 521 College of Education Drive, Statesboro, GA 30460-8064, USA; (D.G.)
| | - Shainaz M. Landge
- Department of Chemistry and Biochemistry, Georgia Southern University (Statesboro Campus), 521 College of Education Drive, Statesboro, GA 30460-8064, USA; (D.G.)
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3
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Synthesis and Evaluation of (1,4-Disubstituted)-1,2,3-triazoles as Estrogen Receptor Beta Agonists. Sci Pharm 2022. [DOI: 10.3390/scipharm90030046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Estrogen receptors (ER) are nuclear hormone receptors which are responsible for sex hormone signaling in women. A series of (1,4-disubstituted)-1,2,3-triazoles 5–21 were prepared by reaction of azidophenols with terminal alkynes under Fokin reaction conditions. The products were purified by column chromatography or recrystallization and characterized by NMR and HRMS. The compounds were tested for binding to ERβ via a ligand displacement assay, and 1-(4-hydroxyphenyl)-α-phenyl-1,2,3-triazole-4-ethanol (21) was found to be the most potent analog (EC50 = 1.59 μM). Molecular docking of 5–21 within the ligand binding pocket of ERβ (pdb 2jj3) was performed and the docking scores exhibited a general qualitative trend consistent with the measured EC50 values.
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Tao Z, Haiyuan W, Wen M, Zhangyuan L, Panpan H, Nanqian Z, Jianchao H, Ting L, Mingming S, Suping B. Synthesis and Antiproliferative Activity Evaluation of Novel Glaucocalyxin A-1,2,3-Triazole Derivatives. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202205049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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5
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Dhawan S, Awolade P, Kisten P, Cele N, Pillay AS, Saha S, Kaur M, Jonnalagadda SB, Singh P. Synthesis, Cytotoxicity and Antimicrobial Evaluation of New Coumarin-Tagged β-Lactam Triazole Hybrid. Chem Biodivers 2020; 17:e1900462. [PMID: 31788939 DOI: 10.1002/cbdv.201900462] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 11/26/2019] [Indexed: 12/20/2022]
Abstract
A series of coumarin-tagged β-lactam triazole hybrids (10a-10o) were synthesized and tested for their cytotoxic activity against MDA-MB-231 (triple negative breast cancer), MCF-7 (estrogen receptor positive breast cancer (ER+)) and A549 (human lung carcinoma) cancer cell lines including one normal cell line, HEK-293 (human embryonic kidney). Two compounds 10b and 10d exhibited substantial cytotoxic effect against MCF-7 cancer cell lines with IC50 values of 53.55 and 58.62 μm, respectively. More importantly, compounds 10b and 10d were non-cytotoxic against HEK-293 cell lines. Structure-activity relationship (SAR) studies suggested that the nitro and chloro group at the C-3 position of phenyl ring are favorable for anticancer activity, particularly against MCF-7 cell lines. Furthermore, antimicrobial evaluation of these compounds revealed modest inhibition of examined pathogenic strains with compounds 10c and 10i being the most promising antimicrobial agents against Pseudomonas aeruginosa and Candida albicans, respectively.
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Affiliation(s)
- Sanjeev Dhawan
- School of Chemistry and Physics, University of KwaZulu-Natal, P/Bag X54001, Westville, Durban, 4000, South Africa
| | - Paul Awolade
- School of Chemistry and Physics, University of KwaZulu-Natal, P/Bag X54001, Westville, Durban, 4000, South Africa
| | - Prishani Kisten
- School of Chemistry and Physics, University of KwaZulu-Natal, P/Bag X54001, Westville, Durban, 4000, South Africa
| | - Nosipho Cele
- School of Chemistry and Physics, University of KwaZulu-Natal, P/Bag X54001, Westville, Durban, 4000, South Africa
| | - Ashona-Singh Pillay
- School of Chemistry and Physics, University of KwaZulu-Natal, P/Bag X54001, Westville, Durban, 4000, South Africa
| | - SouravTaru Saha
- School of Molecular and Cell Biology, University of the Witwatersrand, Private Bag 3, Johannesburg, WITS-2050, South Africa
| | - Mandeep Kaur
- School of Molecular and Cell Biology, University of the Witwatersrand, Private Bag 3, Johannesburg, WITS-2050, South Africa
| | - Sreekantha B Jonnalagadda
- School of Chemistry and Physics, University of KwaZulu-Natal, P/Bag X54001, Westville, Durban, 4000, South Africa
| | - Parvesh Singh
- School of Chemistry and Physics, University of KwaZulu-Natal, P/Bag X54001, Westville, Durban, 4000, South Africa
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6
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Tontsch CJ, Gerster H, Maas G. Iminium-functionalized 1,2,3-triazoles by [3+2] cycloaddition reactions of internal acetylenic iminium triflates with organoazides. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2019. [DOI: 10.1515/znb-2019-0079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Propyne iminium triflates 1–6 react as dipolarophiles in thermal [3 + 2]-cycloadditions with sufficiently electron rich organoazides to form 1,4,5-trisubstituted 1,2,3-triazoles with iminium functionalization. The reactions require rather strong thermal activation, but can be accelerated by microwave irradiation. The regioselectivity of the cycloaddition at the internal acetylenic bond of 3-cyclopropylpropyne and 3-arylpropyne iminium ions (1–3 and 4, respectively) is very high, but is lowered in the presence of sterically demanding substituents at the opposite end of the iminium-substituted C,C triple bond. The iminium-functionalized triazoles can easily be transformed into neutral compounds; herein reported is the formation of triazolyl ketones 10 by hydrolysis and of tertiary triazolyldimethyl amines 12 by LiAlH4 reduction. When the reduction is performed with sodium boranate or sodium cyanoboranate, amine–borane complexes 15 and 16 are obtained.
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Affiliation(s)
- Christian J. Tontsch
- Institute of Organic Chemistry I , Ulm University , Albert-Einstein-Allee 11, D-89081 Ulm , Germany
| | - Holger Gerster
- Institute of Organic Chemistry I , Ulm University , Albert-Einstein-Allee 11, D-89081 Ulm , Germany
| | - Gerhard Maas
- Institute of Organic Chemistry I , Ulm University , Albert-Einstein-Allee 11, D-89081 Ulm , Germany , Fax: +49-731-5022803
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7
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Exploring substituent diversity on pyrrolidine-aryltriazole iminosugars: Structural basis of β-glucocerebrosidase inhibition. Bioorg Chem 2019; 86:652-664. [PMID: 30825709 DOI: 10.1016/j.bioorg.2019.02.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 02/05/2019] [Accepted: 02/09/2019] [Indexed: 01/03/2023]
Abstract
The synthesis of a library of pyrrolidine-aryltriazole hybrids through CuAAC between two epimeric dihydroxylated azidomethylpyrrolidines and differently substituted phenylacetylenes is reported. The evaluation of the new compounds as inhibitors of lysosomal β-glucocerebrosidase showed the importance of the substitution pattern of the phenyl moiety in the inhibition. Crystallization and docking studies revealed key interactions of the pyrrolidine motif with aminoacid residues of the catalytic site while the aryltriazole moiety extended along a hydrophobic surface groove. Some of these compounds were able to increase the enzyme activity in Gaucher patient fibroblasts, acting as a new type of chemical chaperone for Gaucher disease.
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8
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Riva B, Griglio A, Serafini M, Cordero-Sanchez C, Aprile S, Di Paola R, Gugliandolo E, Alansary D, Biocotino I, Lim D, Grosa G, Galli U, Niemeyer B, Sorba G, Canonico PL, Cuzzocrea S, Genazzani AA, Pirali T. Pyrtriazoles, a Novel Class of Store-Operated Calcium Entry Modulators: Discovery, Biological Profiling, and in Vivo Proof-of-Concept Efficacy in Acute Pancreatitis. J Med Chem 2018; 61:9756-9783. [PMID: 30347159 DOI: 10.1021/acs.jmedchem.8b01512] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In recent years, channels that mediate store-operated calcium entry (SOCE, i.e., the ability of cells to sense a decrease in endoplasmic reticulum luminal calcium and induce calcium entry across the plasma membrane) have been associated with a number of disorders, spanning from immune disorders to acute pancreatitis and have been suggested to be druggable targets. In the present contribution, we exploited the click chemistry approach to synthesize a class of SOCE modulators where the arylamide substructure that characterizes most inhibitors so far described is substituted by a 1,4-disubstituted 1,2,3-triazole ring. Within this series, inhibitors of SOCE were identified and the best compound proved effective in an animal model of acute pancreatitis, a disease characterized by a hyperactivation of SOCE. Strikingly, two enhancers of the process were discovered, affording invaluable research tools to further explore the (patho)physiological role of capacitative calcium entry.
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Affiliation(s)
- Beatrice Riva
- Department of Pharmaceutical Sciences , Università del Piemonte Orientale , Novara 28100 , Italy.,ChemICare Srl , Enne3 , Novara 28100 , Italy
| | - Alessia Griglio
- Department of Pharmaceutical Sciences , Università del Piemonte Orientale , Novara 28100 , Italy
| | - Marta Serafini
- Department of Pharmaceutical Sciences , Università del Piemonte Orientale , Novara 28100 , Italy
| | - Celia Cordero-Sanchez
- Department of Pharmaceutical Sciences , Università del Piemonte Orientale , Novara 28100 , Italy
| | - Silvio Aprile
- Department of Pharmaceutical Sciences , Università del Piemonte Orientale , Novara 28100 , Italy
| | - Rosanna Di Paola
- Department of Chemical, Biological, Pharmaceutical, and Enviromental Sciences , Università di Messina , Messina 98166 , Italy
| | - Enrico Gugliandolo
- Department of Chemical, Biological, Pharmaceutical, and Enviromental Sciences , Università di Messina , Messina 98166 , Italy
| | - Dalia Alansary
- Department of Molecular Biophysics , Saarland University CIPMM , Homburg 66421 , Germany
| | - Isabella Biocotino
- Department of Pharmaceutical Sciences , Università del Piemonte Orientale , Novara 28100 , Italy
| | - Dmitry Lim
- Department of Pharmaceutical Sciences , Università del Piemonte Orientale , Novara 28100 , Italy
| | - Giorgio Grosa
- Department of Pharmaceutical Sciences , Università del Piemonte Orientale , Novara 28100 , Italy
| | - Ubaldina Galli
- Department of Pharmaceutical Sciences , Università del Piemonte Orientale , Novara 28100 , Italy
| | - Barbara Niemeyer
- Department of Molecular Biophysics , Saarland University CIPMM , Homburg 66421 , Germany
| | - Giovanni Sorba
- Department of Pharmaceutical Sciences , Università del Piemonte Orientale , Novara 28100 , Italy
| | - Pier Luigi Canonico
- Department of Pharmaceutical Sciences , Università del Piemonte Orientale , Novara 28100 , Italy
| | - Salvatore Cuzzocrea
- Department of Chemical, Biological, Pharmaceutical, and Enviromental Sciences , Università di Messina , Messina 98166 , Italy
| | - Armando A Genazzani
- Department of Pharmaceutical Sciences , Università del Piemonte Orientale , Novara 28100 , Italy
| | - Tracey Pirali
- Department of Pharmaceutical Sciences , Università del Piemonte Orientale , Novara 28100 , Italy.,ChemICare Srl , Enne3 , Novara 28100 , Italy
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9
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Meisner QJ, Accardo JV, Hu G, Clark RJ, Jiang DE, Zhu L. Fluorescence of Hydroxyphenyl-Substituted "Click" Triazoles. J Phys Chem A 2018; 122:2956-2973. [PMID: 29489363 DOI: 10.1021/acs.jpca.8b00577] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The structural and optical properties of hydroxyphenyl-substituted-1,2,3-triazole molecules ("click" triazoles) are described. "Click" triazoles are prepared from the copper(I)-catalyzed azide-alkyne cycloaddition reactions. The alkyne-derived C4 substituent of a "click" triazole engages in electronic conjugation more effectively with the triazolyl core than the azide-derived N1 substituent. Furthermore, triazolyl group exerts a stronger electron-withdrawing effect on the N1 than the C4 substituent. Therefore, the placement of an electron-donating group at either C4 or N1 position and the presence or the absence of an intramolecular hydrogen bond (HB) have profound influences on the optical properties of these compounds. The reported "click" triazoles have fluorescence quantum yields in the range of 0.1-0.3 and large apparent Stokes shifts (8000-13 000 cm-1) in all tested solvents. Deprotonation of "click" triazoles with a C4 hydroxyphenyl group increases their Stokes shifts; while the opposite (or quenching) occurs to the triazoles with an N1 hydroxyphenyl substituent. For the triazoles that contain intramolecular HBs, neither experimental nor computational results support a model of excited state intramolecular proton transfer (ESIPT). Rather, the excited state internal (or intramolecular) charge transfer (ICT) mechanism is more suitable to explain the fluorescence properties of the hydroxyphenyl-substituted "click" triazoles; specifically, the large Stokes shifts of these compounds.
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Affiliation(s)
- Quinton J Meisner
- Department of Chemistry and Biochemistry , Florida State University , 95 Chieftan Way , Tallahassee , Florida 32306-4390 , United States
| | - Joseph V Accardo
- Department of Chemistry and Biochemistry , Florida State University , 95 Chieftan Way , Tallahassee , Florida 32306-4390 , United States
| | - Guoxiang Hu
- Department of Chemistry , University of California , Riverside , California 92521 , United States
| | - Ronald J Clark
- Department of Chemistry and Biochemistry , Florida State University , 95 Chieftan Way , Tallahassee , Florida 32306-4390 , United States
| | - De-En Jiang
- Department of Chemistry , University of California , Riverside , California 92521 , United States
| | - Lei Zhu
- Department of Chemistry and Biochemistry , Florida State University , 95 Chieftan Way , Tallahassee , Florida 32306-4390 , United States
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10
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Nuclear Magnetic Resonance Spectroscopy Investigations of Naphthalene-Based 1,2,3-Triazole Systems for Anion Sensing. MAGNETOCHEMISTRY 2018. [DOI: 10.3390/magnetochemistry4010015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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11
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Ghosh D, Rhodes S, Winder D, Atkinson A, Gibson J, Ming W, Padgett C, Landge S, Aiken K. Spectroscopic investigation of bis-appended 1,2,3-triazole probe for the detection of Cu(II) ion. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.096] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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12
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Hirano T, Noji Y, Shiraishi T, Ishigami-Yuasa M, Kagechika H. Development of an ‘OFF-ON-OFF’ fluorescent pH sensor suitable for the study of intracellular pH. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.06.065] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Heinrich T, Traulsen CHH, Holzweber M, Richter S, Kunz V, Kastner SK, Krabbenborg SO, Huskens J, Unger WES, Schalley CA. Coupled molecular switching processes in ordered mono- and multilayers of stimulus-responsive rotaxanes on gold surfaces. J Am Chem Soc 2015; 137:4382-90. [PMID: 25782057 PMCID: PMC4410911 DOI: 10.1021/ja512654d] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Indexed: 01/06/2023]
Abstract
Interfaces provide the structural basis for function as, for example, encountered in nature in the membrane-embedded photosystem or in technology in solar cells. Synthetic functional multilayers of molecules cooperating in a coupled manner can be fabricated on surfaces through layer-by-layer self-assembly. Ordered arrays of stimulus-responsive rotaxanes undergoing well-controlled axle shuttling are excellent candidates for coupled mechanical motion. Such stimulus-responsive surfaces may help integrate synthetic molecular machines in larger systems exhibiting even macroscopic effects or generating mechanical work from chemical energy through cooperative action. The present work demonstrates the successful deposition of ordered mono- and multilayers of chemically switchable rotaxanes on gold surfaces. Rotaxane mono- and multilayers are shown to reversibly switch in a coupled manner between two ordered states as revealed by linear dichroism effects in angle-resolved NEXAFS spectra. Such a concerted switching process is observed only when the surfaces are well packed, while less densely packed surfaces lacking lateral order do not exhibit such effects.
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Affiliation(s)
- Thomas Heinrich
- Institut
für Chemie und Biochemie, Freie Universität
Berlin, Takustrasse 3, 14195 Berlin, Germany
- BAM—Federal Institute for Materials Research
and Testing, Unter den
Eichen 44-46, 12203 Berlin, Germany
| | - Christoph H.-H. Traulsen
- Institut
für Chemie und Biochemie, Freie Universität
Berlin, Takustrasse 3, 14195 Berlin, Germany
- BAM—Federal Institute for Materials Research
and Testing, Unter den
Eichen 44-46, 12203 Berlin, Germany
| | - Markus Holzweber
- BAM—Federal Institute for Materials Research
and Testing, Unter den
Eichen 44-46, 12203 Berlin, Germany
| | - Sebastian Richter
- Institut
für Chemie und Biochemie, Freie Universität
Berlin, Takustrasse 3, 14195 Berlin, Germany
| | - Valentin Kunz
- Institut
für Chemie und Biochemie, Freie Universität
Berlin, Takustrasse 3, 14195 Berlin, Germany
| | - Sarah K. Kastner
- Institut
für Chemie und Biochemie, Freie Universität
Berlin, Takustrasse 3, 14195 Berlin, Germany
| | - Sven O. Krabbenborg
- Molecular Nanofabrication
Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Jurriaan Huskens
- Molecular Nanofabrication
Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Wolfgang E. S. Unger
- BAM—Federal Institute for Materials Research
and Testing, Unter den
Eichen 44-46, 12203 Berlin, Germany
| | - Christoph A. Schalley
- Institut
für Chemie und Biochemie, Freie Universität
Berlin, Takustrasse 3, 14195 Berlin, Germany
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14
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Ghosh D, Rhodes S, Hawkins K, Winder D, Atkinson A, Ming W, Padgett C, Orvis J, Aiken K, Landge S. A simple and effective 1,2,3-triazole based “turn-on” fluorescence sensor for the detection of anions. NEW J CHEM 2015. [DOI: 10.1039/c4nj01411a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,2,3-Triazole based chemosensor is synthesized using “Click chemistry” approach. Addition of fluoride ion “turn-on” the fluorescence response of probe.
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Affiliation(s)
- Debanjana Ghosh
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | - Shannon Rhodes
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | - Karena Hawkins
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | | | - Austin Atkinson
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | - Weihua Ming
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | - Clifford Padgett
- Department of Chemistry and Physics
- Armstrong Atlantic State University
- Savannah
- USA
| | - Jeffrey Orvis
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | - Karelle Aiken
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
| | - Shainaz Landge
- Department of Chemistry
- Georgia Southern University
- Statesboro
- USA
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15
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Fluorescent poly(boron enaminoketonate)s: synthesis via the direct modification of polyisoxazoles obtained from the click polymerization of a homoditopic nitrile N-oxide and diynes. Polym J 2014. [DOI: 10.1038/pj.2014.31] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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16
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Lauria A, Delisi R, Mingoia F, Terenzi A, Martorana A, Barone G, Almerico AM. 1,2,3-Triazole in Heterocyclic Compounds, Endowed with Biological Activity, through 1,3-Dipolar Cycloadditions. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301695] [Citation(s) in RCA: 228] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Schulze B, Schubert US. Beyond click chemistry – supramolecular interactions of 1,2,3-triazoles. Chem Soc Rev 2014; 43:2522-71. [DOI: 10.1039/c3cs60386e] [Citation(s) in RCA: 583] [Impact Index Per Article: 58.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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18
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Marechal A, El-Debs R, Dugas V, Demesmay C. Is click chemistry attractive for separation sciences? J Sep Sci 2013; 36:2049-62. [DOI: 10.1002/jssc.201300231] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 04/12/2013] [Accepted: 04/12/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Audrey Marechal
- Institut des Sciences Analytiques; UMR CNRS 5280, Université de Lyon; Villeurbanne France
| | - Racha El-Debs
- Institut des Sciences Analytiques; UMR CNRS 5280, Université de Lyon; Villeurbanne France
| | - Vincent Dugas
- Institut des Sciences Analytiques; UMR CNRS 5280, Université de Lyon; Villeurbanne France
| | - Claire Demesmay
- Institut des Sciences Analytiques; UMR CNRS 5280, Université de Lyon; Villeurbanne France
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19
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Demkowicz S, Filipiak K, Maslyk M, Ciepielski J, de Pascual-Teresa S, Martín-Santamaría S, Pascual-Teresa BD, Ramos A. New clicked full agonists of the estrogen receptor β. RSC Adv 2013. [DOI: 10.1039/c3ra00122a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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20
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Doria F, Percivalle C, Freccero M. Vinylidene-quinone methides, photochemical generation and β-silicon effect on reactivity. J Org Chem 2012; 77:3615-9. [PMID: 22397717 DOI: 10.1021/jo300115f] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Irradiation of 2-alkynylphenols resulted in the generation of vinylidene-quinone methides (QMs), which were detected by laser flash photolysis in organic solvents and aqueous acetonitrile. QMs' spectroscopic properties and electrophilicity were both significantly affected by β-silicon effect. The hydration of the alkynyl moiety (22 and 900 M(-1) s(-1)for QM-1 and QM-2, in aqueous acetonitrile) was an acid- and base-catalyzed process. The addition of amines was fast (9.2 × 10(3) M(-1) s(-1) < k(2) < 1.3 × 10(8) M(-1) s(-1)), yielding ketimines, with primary amines.
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Affiliation(s)
- Filippo Doria
- Dipartimento di Chimica, Università di Pavia, V.le Taramelli 10, 27100 Pavia, Italy
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21
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Caldarelli A, Minazzi P, Canonico PL, Genazzani AA, Giovenzana GB. N-Arylbenzamides: extremely simple scaffolds for the development of novel estrogen receptor agonists. J Enzyme Inhib Med Chem 2011; 28:148-52. [DOI: 10.3109/14756366.2011.642374] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Antonio Caldarelli
- DISCAFF & DFB Center, Università degli Studi del Piemonte Orientale “A. Avogadro”, Novara, Italy
| | - Paolo Minazzi
- DISCAFF & DFB Center, Università degli Studi del Piemonte Orientale “A. Avogadro”, Novara, Italy
| | - Pier Luigi Canonico
- DISCAFF & DFB Center, Università degli Studi del Piemonte Orientale “A. Avogadro”, Novara, Italy
| | - Armando A. Genazzani
- DISCAFF & DFB Center, Università degli Studi del Piemonte Orientale “A. Avogadro”, Novara, Italy
| | - Giovanni B. Giovenzana
- DISCAFF & DFB Center, Università degli Studi del Piemonte Orientale “A. Avogadro”, Novara, Italy
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22
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Abdelhamid R, Luo J, VandeVrede L, Kundu I, Michalsen B, Litosh VA, Schiefer IT, Gherezghiher T, Yao P, Qin Z, Thatcher GRJ. Benzothiophene Selective Estrogen Receptor Modulators Provide Neuroprotection by a novel GPR30-dependent Mechanism. ACS Chem Neurosci 2011; 2:256-268. [PMID: 21731800 PMCID: PMC3124785 DOI: 10.1021/cn100106a] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2010] [Accepted: 02/24/2011] [Indexed: 12/18/2022] Open
Abstract
The clinical benzothiophene SERM (BT-SERM), raloxifene, was compared with estrogens in protection of primary rat neurons against oxygen-glucose deprivation (OGD). Structure-activity relationships for neuroprotection were determined for a family of BT-SERMs displaying a spectrum of ERα and ERβ binding affinity and agonist/antagonist activity, leading to discovery of a neuroprotective pharmacophore, present in the clinically relevant SERMS, raloxifene and desmethylarzoxifene (DMA), for which submicromolar potency was observed for neuroprotection. BT-SERM neuroprotection did not correlate with binding to ER nor classical ER activity, however, both the neuroprotective SERMs and estrogens were shown, using pharmacological probes, to activate the same kinase signaling cascades. The antiestrogen ICI 182,780 inhibited the actions of estrogens, but not those of BT-SERMs, whereas antagonism of the G-protein coupled receptor, GPR30, was effective for both SERMs and estrogens. Since SERMs have antioxidant activity, ER-independent mechanisms were studied using the classical phenolic antioxidants, BHT and Trolox, and the Nrf2-dependent cytoprotective electrophile, sulforaphane. However, neuroprotection by these agents was not sensitive to GPR30 antagonism. Collectively, these data indicate that the activity of neuroprotective BT-SERMs is GPR30-dependent and ER-independent and not mediated by antioxidant effects. Comparison of novel BT-SERM derivatives and analogs identified a neuroprotective pharmacophore of potential use in design of novel neuroprotective agents with a spectrum of ER activity.
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Affiliation(s)
- Ramy Abdelhamid
- Department of Medicinal Chemistry and Pharmacognosy (M/C 781), College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612-7231, United States
| | - Jia Luo
- Department of Medicinal Chemistry and Pharmacognosy (M/C 781), College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612-7231, United States
| | - Lawren VandeVrede
- Department of Medicinal Chemistry and Pharmacognosy (M/C 781), College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612-7231, United States
| | - Indraneel Kundu
- Department of Medicinal Chemistry and Pharmacognosy (M/C 781), College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612-7231, United States
| | - Bradley Michalsen
- Department of Medicinal Chemistry and Pharmacognosy (M/C 781), College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612-7231, United States
| | - Vladislav A. Litosh
- Department of Medicinal Chemistry and Pharmacognosy (M/C 781), College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612-7231, United States
| | - Isaac T. Schiefer
- Department of Medicinal Chemistry and Pharmacognosy (M/C 781), College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612-7231, United States
| | - Teshome Gherezghiher
- Department of Medicinal Chemistry and Pharmacognosy (M/C 781), College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612-7231, United States
| | - Ping Yao
- Department of Medicinal Chemistry and Pharmacognosy (M/C 781), College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612-7231, United States
| | - Zhihui Qin
- Department of Medicinal Chemistry and Pharmacognosy (M/C 781), College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612-7231, United States
| | - Gregory R. J. Thatcher
- Department of Medicinal Chemistry and Pharmacognosy (M/C 781), College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612-7231, United States
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23
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Nguyen DM, Miles DH. Copper(I)-Catalyzed Cycloaddition of Methyl O-Propargylpodocarpate and Azides at Room Temperature. SYNTHETIC COMMUN 2011. [DOI: 10.1080/00397911.2010.492081] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Ryu BY, Emrick T. Thermally Induced Structural Transformation of Bisphenol-1,2,3-triazole Polymers: Smart, Self-Extinguishing Materials. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201005456] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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Ryu BY, Emrick T. Thermally Induced Structural Transformation of Bisphenol-1,2,3-triazole Polymers: Smart, Self-Extinguishing Materials. Angew Chem Int Ed Engl 2010; 49:9644-7. [DOI: 10.1002/anie.201005456] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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26
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Colombano G, Travelli C, Galli U, Caldarelli A, Chini MG, Canonico PL, Sorba G, Bifulco G, Tron GC, Genazzani AA. A novel potent nicotinamide phosphoribosyltransferase inhibitor synthesized via click chemistry. J Med Chem 2010; 53:616-23. [PMID: 19961183 DOI: 10.1021/jm9010669] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The inhibition of NAD synthesis or salvage pathways has been proposed as a novel target for antitumoral drugs. Two molecules with this mechanism of action are at present undergoing clinical trials. In searching for similar novel molecules, we exploited copper-catalyzed [3 + 2] cycloaddition between azides and alkynes (click chemistry) to synthesize 185 novel analogues. The most promising compound displays an IC(50) for cytotoxicity in vitro of 3.8 +/- 0.3 nM and an IC(50) for NAD depletion of 3.0 +/- 0.4 nM. Herein, we strengthen previous data suggesting that this class of compounds induces autophagic cell death. In addition to characterizing this compound and providing a rationale via molecular docking, we reinforce the excellent potential of click chemistry for rapidly generating structure-activity relationships and for drug screening.
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Affiliation(s)
- Giampiero Colombano
- Dipartimento di Scienze Chimiche, Alimentari, Farmaceutiche e Farmacologiche, Università degli Studi del Piemonte Orientale A. Avogadro, Via Bovio 6, 28100 Novara, Italy
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27
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Guetzoyan LJ, Spooner RA, Boal F, Stephens DJ, Lord JM, Roberts LM, Clarkson GJ. Fine tuning Exo2, a small molecule inhibitor of secretion and retrograde trafficking pathways in mammalian cells. MOLECULAR BIOSYSTEMS 2010; 6:2030-8. [DOI: 10.1039/c0mb00035c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Minutolo F, Macchia M, Katzenellenbogen BS, Katzenellenbogen JA. Estrogen receptor β ligands: Recent advances and biomedical applications. Med Res Rev 2009; 31:364-442. [DOI: 10.1002/med.20186] [Citation(s) in RCA: 126] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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29
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Celen S, Cleynhens J, Deroose C, de Groot T, Ibrahimi A, Gijsbers R, Debyser Z, Mortelmans L, Verbruggen A, Bormans G. Synthesis and biological evaluation of (11)C-labeled beta-galactosyl triazoles as potential PET tracers for in vivo LacZ reporter gene imaging. Bioorg Med Chem 2009; 17:5117-25. [PMID: 19515568 DOI: 10.1016/j.bmc.2009.05.056] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2008] [Revised: 05/20/2009] [Accepted: 05/23/2009] [Indexed: 11/18/2022]
Abstract
In our aim to develop LacZ reporter probes with a good retention in LacZ expressing cells, we report the synthesis and preliminary evaluation of two carbon-11 labeled beta-galactosyl triazoles 1-(beta-d-galactopyranosyl)-4-(p-[(11)C]methoxyphenyl)-1,2,3-triazole ([(11)C]-6) and 1-(beta-d-galactopyranosyl)-4-(6-[(11)C]methoxynaphthyl)-1,2,3-triazole ([(11)C]-13). The precursors for the radiolabeling and the non-radioactive analogues (6 and 13) were synthesized using straightforward 'click' chemistry. In vitro incubation experiments of 6 with beta-galactosidase in the presence of o-nitrophenyl beta-d-galactopyranoside (ONPG) showed that the triazolic compound was an inhibitor of beta-galactosidase activity. Radiolabeling of both precursors was performed using [(11)C]methyl iodide as alkylating agent at 70 degrees C in DMF in the presence of a small amount of base. The logP values were -0.1 and 1.4, respectively, for [(11)C]-6 and [(11)C]-13, the latter therefore being a good candidate for increased cellular uptake via passive diffusion. Biodistribution studies in normal mice showed a good clearance from blood for both tracers. [(11)C]-6 was mainly cleared via the renal pathway, while the more lipophilic [(11)C]-13 was excreted almost exclusively via the hepatobiliary system. Despite the lipophilicity of [(11)C]-13, no brain uptake was observed. Reversed phase HPLC analysis of murine plasma and urine revealed high in vivo stability for both tracers. In vitro evaluation in HEK-293T cells showed an increased cell uptake for the more lipophilic [(11)C]-13, however, there was no statistically higher uptake in LacZ expressing cells compared to control cells.
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Affiliation(s)
- Sofie Celen
- Laboratory for Radiopharmacy, Faculty of Pharmaceutical Sciences, Katholieke Universiteit Leuven, Herestraat 49 bus 821, BE-3000 Leuven, Belgium
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30
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Bey E, Marchais-Oberwinkler S, Werth R, Negri M, Al-Soud YA, Kruchten P, Oster A, Frotscher M, Birk B, Hartmann RW. Design, synthesis, biological evaluation and pharmacokinetics of bis(hydroxyphenyl) substituted azoles, thiophenes, benzenes, and aza-benzenes as potent and selective nonsteroidal inhibitors of 17beta-hydroxysteroid dehydrogenase type 1 (17beta-HSD1). J Med Chem 2008; 51:6725-39. [PMID: 18855374 DOI: 10.1021/jm8006917] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
17beta-Estradiol (E2), the most potent female sex hormone, stimulates the growth of mammary tumors and endometriosis via activation of the estrogen receptor alpha (ERalpha). 17beta-Hydroxysteroid dehydrogenase type 1 (17beta-HSD1), which is responsible for the catalytic reduction of the weakly active estrogen estrone (E1) into E2, is therefore discussed as a novel drug target. Recently, we have discovered a 2,5-bis(hydroxyphenyl) oxazole to be a potent inhibitor of 17beta-HSD1. In this paper, further structural optimizations were performed: 39 bis(hydroxyphenyl) azoles, thiophenes, benzenes, and aza-benzenes were synthesized and their biological properties were evaluated. The most promising compounds of this study show enhanced IC 50 values in the low nanomolar range, a high selectivity toward 17beta-HSD2, a low binding affinity to ERalpha, a good metabolic stability in rat liver microsomes, and a reasonable pharmacokinetic profile after peroral application. Calculation of the molecular electrostatic potentials revealed a correlation between 17beta-HSD1 inhibition and the electron density distribution.
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Affiliation(s)
- Emmanuel Bey
- Pharmaceutical and Medicinal Chemistry, Saarland University, PO Box 15 11 50, D-66041, Saarbrucken, Germany
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31
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Cafici L, Pirali T, Condorelli F, Del Grosso E, Massarotti A, Sorba G, Canonico PL, Tron GC, Genazzani AA. Solution-phase parallel synthesis and biological evaluation of combretatriazoles. ACTA ACUST UNITED AC 2008; 10:732-40. [PMID: 18681482 DOI: 10.1021/cc800090d] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Combretastatin A-4 is an antitumoral and antitubulin agent that is active only in its cis configuration. In the present manuscript, we have synthesized cis-locked combretastatins containing a triazole ring (combretatriazoles). To achieve this, we have developed a column chromatography-free parallel solution-phase synthesis that exploits the reaction between azides and alpha-keto phosphorus ylids, which is known to regioselectively generate the 1,5-disubstituted triazoles. The prepared compounds were screened as antitubulinic agents, allowing us to identify three new compounds with high potency, two of which show a new mechanism of action that induces cells to appear multinucleated and display a high number of mitotic spindles.
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Affiliation(s)
- Laura Cafici
- Dipartimento di Scienze Chimiche, Alimentari, Farmaceutiche e Farmacologiche and Drug and Food Biotechnology Center, Università degli Studi del Piemonte Orientale "A. Avogadro", Via Bovio 6, 28100 Novara, Italy
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32
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Bey E, Marchais-Oberwinkler S, Kruchten P, Frotscher M, Werth R, Oster A, Algül O, Neugebauer A, Hartmann RW. Design, synthesis and biological evaluation of bis(hydroxyphenyl) azoles as potent and selective non-steroidal inhibitors of 17β-hydroxysteroid dehydrogenase type 1 (17β-HSD1) for the treatment of estrogen-dependent diseases. Bioorg Med Chem 2008; 16:6423-35. [DOI: 10.1016/j.bmc.2008.04.073] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2008] [Revised: 04/24/2008] [Accepted: 04/30/2008] [Indexed: 11/15/2022]
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