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Sciacca C, Cardullo N, Pulvirenti L, Travagliante G, D'Urso A, D'Agata R, Peri E, Cancemi P, Cornu A, Deffieux D, Pouységu L, Quideau S, Muccilli V. Synthesis of obovatol and related neolignan analogues as α-glucosidase and α-amylase inhibitors. Bioorg Chem 2024; 147:107392. [PMID: 38723423 DOI: 10.1016/j.bioorg.2024.107392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 04/12/2024] [Accepted: 04/21/2024] [Indexed: 05/18/2024]
Abstract
Diabetes mellitus is a metabolic disease characterized by hyperglycemia, which can be counteracted by the inhibition of α-glucosidase (α-Glu) and α-amylase (α-Amy), enzymes responsible for the hydrolysis of carbohydrates. In recent decades, many natural compounds and their bioinspired analogues have been studied as α-Glu and α-Amy inhibitors. However, no studies have been devoted to the evaluation of α-Glu and α-Amy inhibition by the neolignan obovatol (1). In this work, we report the synthesis of 1 and a library of new analogues. The synthesis of these compounds was achieved by implementing methodologies based on: phenol allylation, Claisen/Cope rearrangements, methylation, Ullmann coupling, demethylation, phenol oxidation and Michael-type addition. Obovatol (1) and ten analogues were evaluated for their in vitro inhibitory activity towards α-Glu and α-Amy. Our investigation highlighted that the naturally occurring 1 and four neolignan analogues (11, 22, 26 and 27) were more effective inhibitors than the hypoglycemic drug acarbose (α-Amy: 34.6 µM; α-Glu: 248.3 µM) with IC5O value of 6.2-23.6 µM toward α-Amy and 39.8-124.6 µM toward α-Glu. Docking investigations validated the inhibition outcomes, highlighting optimal compatibility between synthesized neolignans and both the enzymes. Concurrently circular dichroism spectroscopy detected the conformational changes in α-Glu induced by its interaction with the studied neolignans. Detailed studies through fluorescence measurements and kinetics of α-Glu and α-Amy inhibition also indicated that 1, 11, 22, 26 and 27 have the greatest affinity for α-Glu and 1, 11 and 27 for α-Amy. Surface plasmon resonance imaging (SPRI) measurements confirmed that among the compounds studied, the neolignan 27 has the greater affinity for both enzymes, thus corroborating the results obtained by kinetics and fluorescence quenching. Finally, in vitro cytotoxicity of the investigated compounds was tested on human colon cancer cell line (HCT-116). All these results demonstrate that these obovatol-based neolignan analogues constitute promising candidates in the pursuit of developing novel hypoglycemic drugs.
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Affiliation(s)
- Claudia Sciacca
- Department of Chemical Sciences, University of Catania, V.le A. Doria 6, 95125 Catania, Italy
| | - Nunzio Cardullo
- Department of Chemical Sciences, University of Catania, V.le A. Doria 6, 95125 Catania, Italy
| | - Luana Pulvirenti
- CNR-ICB, Consiglio Nazionale delle Ricerche-Istituto di Chimica Biomolecolare, via Paolo Gaifami 18, Catania 95126, Italy
| | - Gabriele Travagliante
- Department of Chemical Sciences, University of Catania, V.le A. Doria 6, 95125 Catania, Italy
| | - Alessandro D'Urso
- Department of Chemical Sciences, University of Catania, V.le A. Doria 6, 95125 Catania, Italy
| | - Roberta D'Agata
- Department of Chemical Sciences, University of Catania, V.le A. Doria 6, 95125 Catania, Italy
| | - Emanuela Peri
- Department of Biological Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo 90128, Italy
| | - Patrizia Cancemi
- Department of Biological Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo 90128, Italy
| | - Anaëlle Cornu
- Univ. Bordeaux, ISM (CNRS-UMR 5255), 351 cours de la Libération, Talence Cedex, France
| | - Denis Deffieux
- Univ. Bordeaux, ISM (CNRS-UMR 5255), 351 cours de la Libération, Talence Cedex, France
| | - Laurent Pouységu
- Univ. Bordeaux, ISM (CNRS-UMR 5255), 351 cours de la Libération, Talence Cedex, France
| | - Stéphane Quideau
- Univ. Bordeaux, ISM (CNRS-UMR 5255), 351 cours de la Libération, Talence Cedex, France; Institut Universitaire de France, 1 rue Descartes, 75231 Paris Cedex 05, France.
| | - Vera Muccilli
- Department of Chemical Sciences, University of Catania, V.le A. Doria 6, 95125 Catania, Italy.
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2
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Sharma D, Arora A, Oswal P, Bahuguna A, Datta A, Kumar A. Organosulphur and organoselenium compounds as emerging building blocks for catalytic systems for O-arylation of phenols, a C-O coupling reaction. Dalton Trans 2022; 51:8103-8132. [PMID: 35535745 DOI: 10.1039/d1dt04371d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Diaryl ethers form an important class of organic compounds. The classic copper-mediated Ullmann diaryl ether synthesis has been known for many years and involves the coupling of phenols with aryl halides. However, the use of high reaction temperature, high catalyst loading and expensive ligands has created a need for the development of alternative catalytic systems. In the recent past, organosulphur and organoselenium compounds have been used as building blocks for developing homogeneous, heterogeneous and nanocatalysts for this C-O coupling reaction. Homogeneous catalytic systems include preformed complexes of metals with organosulphur and organoselenium ligands. The performance of such complexes is influenced dramatically by the nature of the chalcogen (S or Se) donor site of the ligand. Nanocatalytic systems (including Pd17Se15, Pd16S7 and Cu1.8S) have been designed using a single-source precursor route. Heterogeneous catalytic systems contain either metal (Cu or Pd) or metal chalcogenides (Pd17Se15 or Cu1.8S) as catalytically active species. This article aims to cover the simple and straightforward methodologies and approaches that are adopted for developing catalytically relevant organosulfur and organoselenium ligands, their homogeneous metal complexes, heterogeneous and nanocatalysts. The effects of chalcogen (S or Se) donor, halogen (Cl/Br/I) of aryl halide, nature (electron withdrawing or electron donating) of substituents present on the aromatic ring of aryl halides or substituted phenols and position (ortho or para) of substitution on the results of catalytic reactions have been critically analyzed and summarized. The effect of composition (Pd17Se15 or Pd16S7) on the performance of nanocatalytic systems is also highlighted. Substrate scope has also been discussed in all three types of catalysis. The superiority of heterogeneous catalytic systems (e.g., Pd17Se15 immobilised on graphene oxide) indicates the bright future possibilities for the development of efficient catalytic systems using similar or tailored ligands for this reaction.
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Affiliation(s)
- Deepali Sharma
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248012 India.
| | - Aayushi Arora
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248012 India.
| | - Preeti Oswal
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248012 India.
| | - Anurag Bahuguna
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248012 India.
| | - Anupama Datta
- Institute of Nuclear Medicine and Allied Sciences (INMAS), India
| | - Arun Kumar
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248012 India.
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3
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Sear CE, Pieper P, Amaral M, Romanelli MM, Costa-Silva TA, Haugland MM, Tate JA, Lago JHG, Tempone AG, Anderson EA. Synthesis and Structure-Activity Relationship of Dehydrodieugenol B Neolignans against Trypanosoma cruzi. ACS Infect Dis 2020; 6:2872-2878. [PMID: 33047947 PMCID: PMC7670487 DOI: 10.1021/acsinfecdis.0c00523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Trypanosoma cruzi is the etiologic agent of Chagas disease, which affects over seven million people, especially in developing countries. Undesirable side effects are frequently associated with current therapies, which are typically ineffective in the treatment of all stages of the disease. Here, we report the first synthesis of the neolignan dehydrodieugenol B, a natural product recently shown to exhibit activity against T. cruzi. Using this strategy, a series of synthetic analogues were prepared to explore structure-activity relationships. The in vitro antiparasitic activities of these analogues revealed a wide tolerance of modifications and substituent deletions, with maintained or improved bioactivities against the amastigote forms of the parasite (50% inhibitory concentration (IC50) of 4-63 μM) and no mammalian toxicity (50% cytotoxic concentration (CC50) of >200 μM). Five of these analogues meet the Drugs for Neglected Disease Initiative (DNDi) "hit criteria" for Chagas disease. This work has enabled the identification of key structural features of the natural product and sites where scaffold modification is tolerated.
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Affiliation(s)
- Claire E. Sear
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Pauline Pieper
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Maiara Amaral
- Faculdade de Medicina, Universidade de São Paulo, São Paulo 05403-000, Brazil
- Centre for Parasitology and Mycology, Instituto Adolfo Lutz, São Paulo 01246-000, Brazil
| | - Maiara M. Romanelli
- Centre for Parasitology and Mycology, Instituto Adolfo Lutz, São Paulo 01246-000, Brazil
| | - Thais A. Costa-Silva
- Centre for Parasitology and Mycology, Instituto Adolfo Lutz, São Paulo 01246-000, Brazil
| | - Marius M. Haugland
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Joseph A. Tate
- Syngenta Ltd., Jealott’s Hill International Research Centre, Bracknell RG42 6EY, United Kingdom
| | - João H. G. Lago
- Centre of Natural Sciences and Humanities, Federal University of ABC (UFBC), Avenida dos Estados 5001, Santo Andre, São Paulo 09210-580, Brazil
| | - Andre G. Tempone
- Centre for Parasitology and Mycology, Instituto Adolfo Lutz, São Paulo 01246-000, Brazil
| | - Edward A. Anderson
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
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Sun W, Kim TS, Choi NS, Seo SY. Synthesis of 1,2,3-Triazole and Pyrazole Analogues as Bioisosteres of Biphenyl-Neolignans. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Wei Sun
- College of Pharmacy; Gachon University; Incheon 21936 Republic of Korea
| | - Taek-Soo Kim
- College of Pharmacy; Gachon University; Incheon 21936 Republic of Korea
| | - Nam Song Choi
- College of Interdisciplinary & Creative Studies; Konyang University; Nonsan 32992 Republic of Korea
| | - Seung-Yong Seo
- College of Pharmacy; Gachon University; Incheon 21936 Republic of Korea
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Evano G, Wang J, Nitelet A. Metal-mediated C–O bond forming reactions in natural product synthesis. Org Chem Front 2017. [DOI: 10.1039/c7qo00671c] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Metal catalyzed reactions for the formation of C(sp2)–O bonds have had a dramatic impact in natural product synthesis. They have enabled the emergence of new bond disconnections, which notably resulted in remarkably efficient and short synthetic pathways. The use of these reactions for the formation of C–O bonds in natural product synthesis is overviewed in this critical review.
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Affiliation(s)
- Gwilherm Evano
- Laboratoire de Chimie Organique
- Service de Chimie et PhysicoChimie Organiques
- Université libre de Bruxelles (ULB)
- 1050 Brussels
- Belgium
| | - Jianjun Wang
- Laboratoire de Chimie Organique
- Service de Chimie et PhysicoChimie Organiques
- Université libre de Bruxelles (ULB)
- 1050 Brussels
- Belgium
| | - Antoine Nitelet
- Laboratoire de Chimie Organique
- Service de Chimie et PhysicoChimie Organiques
- Université libre de Bruxelles (ULB)
- 1050 Brussels
- Belgium
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Hassam M, Taher A, Arnott GE, Green IR, van Otterlo WAL. Isomerization of Allylbenzenes. Chem Rev 2015; 115:5462-569. [DOI: 10.1021/acs.chemrev.5b00052] [Citation(s) in RCA: 175] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mohammad Hassam
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Abu Taher
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Gareth E. Arnott
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Ivan R. Green
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Willem A. L. van Otterlo
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
- School
of Chemistry, University of the Witwatersrand, Braamfontein, Johannesburg 2000, South Africa
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Li C, Huang C, Lu T, Wu L, Deng S, Yang R, Li J. Tandem mass spectrometric fragmentation behavior of lignans, flavonoids and triterpenoids in Streblus asper. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2014; 28:2363-2370. [PMID: 25279750 DOI: 10.1002/rcm.7035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Revised: 08/28/2014] [Accepted: 08/28/2014] [Indexed: 06/03/2023]
Abstract
RATIONALE An unambiguous identification of compounds can be achieved by comparison of known fragmentation patterns. While the literature about fragmentation mechanisms of lignans, flavonoids and triterpenoids is few. So the present study analyses the fragmentation mechanisms of these compounds isolated from Streblus asper. METHODS Electrospray ionization ion trap mass spectrometry (ESI-ITMS) and atmospheric pressure chemical ionization ion trap mass spectrometry (APCI-ITMS) were used to obtain the MS(n) spectra of the compounds. By analyzing the differences between the ions, the fragmentation mechanisms of these compounds were explored. RESULTS Of the 29 compounds detected, 17, 7, and 5 were lignans, flavonoids and triterpenoids, respectively. The majority of lignans were found to give [M - H](-) ions of sufficient abundance for MS(n) analyses. The flavonoids were prone to the loss of CO and H2O. The triterpenoids always lost one formic acid molecule and two hydrogens, or one H2O from [M - H](-) to form the most abundant product ion in the MS(n) spectrum. CONCLUSIONS ESI/APCI-ITMS were demonstrated to be fast, effective and practical tools to characterize the structures of flavonoids, triterpenoids and lignans. Results of the present study can help identify the analogous constituents by analyzing their MS(n) spectra.
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Affiliation(s)
- Chen Li
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Environment and Resource of Guangxi Normal University, Guilin, 541004, P.R. China; Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Ministry of Education of China), Guilin, 541004, P.R. China
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Weisz A, Witten JJ, Zeng Y, Mazzola EP, Ito Y. Preparation of two novel monobrominated 2-(2',4'-dihydroxybenzoyl)-3,4,5,6-tetrachlorobenzoic acids and their separation from crude synthetic mixtures using vortex counter-current chromatography. J Chromatogr A 2012; 1237:106-14. [PMID: 22475185 PMCID: PMC3327797 DOI: 10.1016/j.chroma.2012.03.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Revised: 03/12/2012] [Accepted: 03/13/2012] [Indexed: 11/29/2022]
Abstract
The present work describes the preparation of two compounds considered to be likely precursors of an impurity present in samples of the color additives D&C Red No. 27 (Color Index 45410:1) and D&C Red No. 28 (Color Index 45410, phloxine B) submitted to the U.S. Food and Drug Administration for batch certification. The two compounds, 2-(2',4'-dihydroxy-3'-bromobenzoyl)-3,4,5,6-tetrachlorobenzoic acid (3BrHBBA) and its 5'-brominated positional isomer (5BrHBBA), both not reported previously, were separated from synthetic mixtures by vortex counter-current chromatography (VCCC). 3BrHBBA was prepared by chemoselective ortho-bromination of the dihydroxybenzoyl moiety. Two portions of the obtained synthetic mixture, 200mg and 210 mg, respectively, were separated by VCCC using two two-phase solvent systems that consisted of hexane-ethyl acetate-methanol-aqueous 0.2% trifluoroacetic acid (TFA) in the volume ratios of 8:2:5:5 and 7:3:5:5, respectively. These separations produced 35 mg and 78 mg of 3BrHBBA, respectively, each product of over 98% purity by HPLC at 254 nm. 5BrHBBA was prepared by monobromination of the dihydroxybenzoyl moiety in the presence of glacial acetic acid. To separate the obtained synthetic mixture, VCCC was performed in the pH-zone-refining mode with a solvent system consisting of hexane-ethyl acetate-methanol-water (6:4:5:5, v/v) and with TFA used as the retainer acid and aqueous ammonia as the eluent base. Separation of a 1-g mixture under these conditions resulted in 142 mg of 5BrHBBA of ∼ 99% purity by HPLC at 254 nm. The isolated compounds were characterized by high-resolution mass spectrometry and proton nuclear magnetic resonance spectroscopy.
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Affiliation(s)
- Adrian Weisz
- Office of Cosmetics and Colors, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, HFS-106, 5100 Paint Branch Parkway, College Park, MD 20740, USA.
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Lee B, Kwak JH, Huang SW, Jang JY, Lim S, Kwak YS, Lee K, Kim HS, Han SB, Hong JT, Lee H, Song S, Seo SY, Jung JK. Design and synthesis of 4-O-methylhonokiol analogs as inhibitors of cyclooxygenase-2 (COX-2) and PGF₁ production. Bioorg Med Chem 2012; 20:2860-8. [PMID: 22494844 DOI: 10.1016/j.bmc.2012.03.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 03/09/2012] [Accepted: 03/10/2012] [Indexed: 11/28/2022]
Abstract
A series of novel 4-O-methylhonokiol analogs were synthesized in light of revealing structure-activity relationship for inhibitory effect of COX-2 enzyme. The key strategy of the molecular design was oriented towards modification of the potential metabolic soft spots (e.g., phenol and olefin) or by altering the polar surface area via incorporating heterocycles such as isoxazole and triazole. Most of all exhibited the inhibitory effects on COX-2 and PGF(1) production but not macrophage NO production. Especially, aryl carbamates 10 and 11 exhibited more potent inhibitory activity against COX-2 and PGF(1) production.
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Affiliation(s)
- Bit Lee
- College of Pharmacy, Woosuk University, Wanju, Jeonbuk 565-701, South Korea
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Bedos-Belval F, Rouch A, Vanucci-Bacqué C, Baltas M. Diaryl ether derivatives as anticancer agents – a review. MEDCHEMCOMM 2012. [DOI: 10.1039/c2md20199b] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Kwak JH, Cho YA, Jang JY, Seo SY, Lee H, Hong JT, Han SB, Lee K, Kwak YS, Jung JK. Expedient synthesis of 4-O-methylhonokiol via Suzuki–Miyaura cross-coupling. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.09.115] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Pitsinos EN, Vidali VP, Couladouros EA. Diaryl Ether Formation in the Synthesis of Natural Products. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001520] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Emmanuel N. Pitsinos
- Natural Products Synthesis and Bioorganic Chemistry Laboratory, Institute of Physical Chemistry, NCSR “ DEMOKRITOS”, P. O. Box 60228, 15310 Aghia Paraskevi, Greece
| | - Veroniki P. Vidali
- Natural Products Synthesis and Bioorganic Chemistry Laboratory, Institute of Physical Chemistry, NCSR “ DEMOKRITOS”, P. O. Box 60228, 15310 Aghia Paraskevi, Greece
| | - Elias A. Couladouros
- Natural Products Synthesis and Bioorganic Chemistry Laboratory, Institute of Physical Chemistry, NCSR “ DEMOKRITOS”, P. O. Box 60228, 15310 Aghia Paraskevi, Greece
- Chemistry Laboratories, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece, Fax: +30‐210‐677‐7849
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Jung JW, Jang J, Seo SY, Jung JK, Suh YG. Total synthesis of rodgersinol: a survey of the Cu(II)-mediated coupling of ortho-substituted phenols. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.06.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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