1
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Kajtár M, Király SB, Bényei A, Kiss-Szikszai A, Kónya-Ábrahám A, Zhang N, Horváth LB, Bősze S, Li D, Kotschy A, Paczal A, Kurtán T. Competing Domino Knoevenagel-Cyclization Sequences with N-Arylcinnamylamines. J Org Chem 2024; 89:6937-6950. [PMID: 38691817 DOI: 10.1021/acs.joc.4c00299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
Domino Knoevenagel-cyclization reactions of N-arylcinnamylamines were carried out with active methylene reagents, which took place with five competing cyclization mechanisms: intramolecular hetero Diels-Alder reaction, stepwise polar [2 + 2] cycloaddition, styryl or aza-Diels-Alder reactions followed by rearomatization, and [1,5]-hydride shift-6-endo cyclization. In the stepwise aza-Diels-Alder reaction, the N-vinylpyridinium moiety acted as an azadiene, producing a condensed heterocycle with tetrahydroquinolizinium and tetrahydroquiniline subunits. Antiproliferative activity with low micromolar IC50 values was identified for some of the novel scaffolds.
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Affiliation(s)
- Mihály Kajtár
- Department of Organic Chemistry, University of Debrecen, Debrecen 4002, Hungary
- Doctoral School of Chemistry, University of Debrecen, Egyetem square 1, 4032 Debrecen, Hungary
| | | | - Attila Bényei
- Department of Physical Chemistry, University of Debrecen, Debrecen 4002, Hungary
| | | | - Anita Kónya-Ábrahám
- Department of Organic Chemistry, University of Debrecen, Debrecen 4002, Hungary
| | - Ning Zhang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Lilla Borbála Horváth
- Hungarian Research Network (HUN-REN), Research Group of Peptide Chemistry, Eötvös Loránd University, H1117 Budapest, Hungary
| | - Szilvia Bősze
- Hungarian Research Network (HUN-REN), Research Group of Peptide Chemistry, Eötvös Loránd University, H1117 Budapest, Hungary
| | - Dehai Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Andras Kotschy
- Servier Research Institute of Medicinal Chemistry, Budapest 1031, Hungary
| | - Attila Paczal
- Servier Research Institute of Medicinal Chemistry, Budapest 1031, Hungary
| | - Tibor Kurtán
- Department of Organic Chemistry, University of Debrecen, Debrecen 4002, Hungary
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2
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Mariyappan V, Munuswamy-Ramanujam G, Ramasamy M. Synthesis of novel rapanone derivatives via organocatalytic reductive C-alkylation: biological evaluation of antioxidant properties, in vivo zebrafish embryo toxicity, and docking studies. RSC Med Chem 2024; 15:623-635. [PMID: 38389875 PMCID: PMC10880907 DOI: 10.1039/d3md00564j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 11/24/2023] [Indexed: 02/24/2024] Open
Abstract
A biologically crucial natural product rapanone 1 was isolated from Embelia ribes at the gram scale with excellent purity. Semi-synthetic analogs of 1 semi-synthesized through reductive C-alkylation could increase the therapeutic value of the compounds. Herein, a new synthetic methodology was developed as a single-step reductive C-alkylation protocol using a metal-free, room-temperature-based reaction condition that can be scaled up to gram-scale synthesis with an excellent yield of up to 93%. A straightforward purification protocol was employed for the product obtained by this method. The derivatives of 1 showed antioxidant activity, which was evaluated using DPPH and ABTS scavenging assays. Compounds 5a-5ze showed an IC50 value of 2.48-3.37 μM and 1.81-3.12 μM. Substitution by electron-donating groups on the quinone moiety seems to play an essential role in the increased antioxidant activity of compounds 5a-5i, 5v, 5w, 5zc, and 5z. Further, the in vivo embryotoxicity of 1 and its derivatives was analyzed in a zebrafish-based aquatic toxicology model. Zebrafish embryos were exposed to 1 and 5a-5ze at 20 to 160 μM concentrations. They showed reduced toxicity and a survival rate of 90-98% after 96 hpf of treatment; similarly, the compounds 5a-5i, 5v, 5w, 5zc, and 5zd did not significantly affect the hatching rates of 75.66-85.33% or developmental abnormalities of the embryos after 48 hpf of treatment. In silico molecular docking studies for the parent compound, along with its derivatives 5a-5i, 5v-5w, 5zc-5zd, and standard l-ascorbic acid (l-Aa) indicated favorable interactions with the active site of the crystal structure, coupled with the assay protein PDB:1ZB6, which was responsible for the observed biological understanding and potential.
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Affiliation(s)
- Vaithiyalingam Mariyappan
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology SRM-Nagar Kattankulathur - 603 203 Chengalpattu District Tamil Nadu India https://srmist.irins.org/profile/307007
| | - Ganesh Munuswamy-Ramanujam
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology SRM-Nagar Kattankulathur - 603 203 Chengalpattu District Tamil Nadu India https://srmist.irins.org/profile/307007
- Interdisciplinary Institute of Indian System of Medicine (IIISM), SRM Institute of Science and Technology, SRM Nagar Kattankulathur - 603 203 Chengalpattu District Tamil Nadu India
| | - Mohankumar Ramasamy
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology SRM-Nagar Kattankulathur - 603 203 Chengalpattu District Tamil Nadu India https://srmist.irins.org/profile/307007
- Interdisciplinary Institute of Indian System of Medicine (IIISM), SRM Institute of Science and Technology, SRM Nagar Kattankulathur - 603 203 Chengalpattu District Tamil Nadu India
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3
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Docampo-Palacios ML, Ramirez GA, Tesfatsion TT, Okhovat A, Pittiglio M, Ray KP, Cruces W. Saturated Cannabinoids: Update on Synthesis Strategies and Biological Studies of These Emerging Cannabinoid Analogs. Molecules 2023; 28:6434. [PMID: 37687263 PMCID: PMC10490552 DOI: 10.3390/molecules28176434] [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: 08/02/2023] [Revised: 08/23/2023] [Accepted: 08/27/2023] [Indexed: 09/10/2023] Open
Abstract
Natural and non-natural hexahydrocannabinols (HHC) were first described in 1940 by Adam and in late 2021 arose on the drug market in the United States and in some European countries. A background on the discovery, synthesis, and pharmacology studies of hydrogenated and saturated cannabinoids is described. This is harmonized with a summary and comparison of the cannabinoid receptor affinities of various classical, hybrid, and non-classical saturated cannabinoids. A discussion of structure-activity relationships with the four different pharmacophores found in the cannabinoid scaffold is added to this review. According to laboratory studies in vitro, and in several animal species in vivo, HHC is reported to have broadly similar effects to Δ9-tetrahydrocannabinol (Δ9-THC), the main psychoactive substance in cannabis, as demonstrated both in vitro and in several animal species in vivo. However, the effects of HHC treatment have not been studied in humans, and thus a biological profile has not been established.
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Affiliation(s)
- Maite L. Docampo-Palacios
- Colorado Chromatography Labs, 10505 S. Progress Way, Unit 105, Parker, CO 80134, USA; (G.A.R.); (T.T.T.); (A.O.); (M.P.); (K.P.R.)
| | | | | | | | | | | | - Westley Cruces
- Colorado Chromatography Labs, 10505 S. Progress Way, Unit 105, Parker, CO 80134, USA; (G.A.R.); (T.T.T.); (A.O.); (M.P.); (K.P.R.)
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4
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Rezayati S, Ahmadi Y, Ramazani A. Synthesis of the Picolylamine copper complex immobilized on the Core-Shell Fe3O4 nanomagnetic particles and its application in the organic transformation. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2022.121203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Sangwan S, Yadav N, Kumar R, Chauhan S, Dhanda V, Walia P, Duhan A. A score years’ update in the synthesis and biological evaluation of medicinally important 2-pyridones. Eur J Med Chem 2022; 232:114199. [DOI: 10.1016/j.ejmech.2022.114199] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/06/2022] [Accepted: 02/10/2022] [Indexed: 12/18/2022]
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6
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Bhuyan S, Das D, Chakraborty A, Mandal S, Dhanabal K, Roy BG. A Carbohydrate-based Synthetic Approach to Diverse Structurally and Stereochemically Complex Chiral Polyheterocycles. Chem Asian J 2021; 16:4108-4121. [PMID: 34706155 DOI: 10.1002/asia.202101123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 10/22/2021] [Indexed: 12/27/2022]
Abstract
Chiral polyheterocycles are one of the most frequently encountered scaffolds in natural products and in current drugs repertoire. A carbohydrate-based diversity oriented synthetic (DOS) approach has been employed for gaining access to many structurally diverse and stereochemically complex rigid polyheterocyclic molecules with multiple chiral hydroxyl groups to enhance aqueous solubility. Inexpensive chiral pool of D-Glucose has been judiciously exploited to get access of complex chiral polyheterocyclic structures using inexpensive, common achiral reagents and domino-Knoevenagel hetero-Diels-Alder (DKHDA) reaction as one of the key synthetic tools. Stereochemistry of newly generated stereocenters of polycyclic structures are unambiguously determined through NMR and X-ray crystallographic study. A chemoinformatic comparison (PCA and PMI) with 40 branded blockbuster drugs showed that newly generated polyheterocycles have good three-dimensional scaffold diversity and most of these pass the Lipinski filter of drug-likeness.
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Affiliation(s)
- Samuzal Bhuyan
- Department of Chemistry, Sikkim University, 6th Mile, Tadong, Gangtok, Sikkim, 737102, India
| | - Dharmendra Das
- Department of Chemistry, Sikkim University, 6th Mile, Tadong, Gangtok, Sikkim, 737102, India
| | - Amit Chakraborty
- Department of Mathematics, Sikkim University, 6th Mile, Tadong, Gangtok, Sikkim, 737102, India
| | - Susanta Mandal
- Department of Chemistry, Sikkim University, 6th Mile, Tadong, Gangtok, Sikkim, 737102, India
| | | | - Biswajit Gopal Roy
- Department of Chemistry, Sikkim University, 6th Mile, Tadong, Gangtok, Sikkim, 737102, India
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7
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Martín-Acosta P, Amesty Á, Guerra-Rodríguez M, Guerra B, Fernández-Pérez L, Estévez-Braun A. Modular Synthesis and Antiproliferative Activity of New Dihydro-1 H-pyrazolo[1,3- b]pyridine Embelin Derivatives. Pharmaceuticals (Basel) 2021; 14:ph14101026. [PMID: 34681250 PMCID: PMC8541493 DOI: 10.3390/ph14101026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/30/2021] [Accepted: 10/04/2021] [Indexed: 11/24/2022] Open
Abstract
A set of new dihydro-1H-pyrazolo[1,3-b]pyridine and pyrazolo[1,3-b]pyridine embelin derivatives was synthesized through a multicomponent reaction from natural embelin, 3-substituted-5-aminopyrazoles and aldehydes. The synthesized compounds were evaluated against three hematologic tumor cell lines, HEL (acute erythroid leukemia), K-562 (chronic myeloid leukemia) and HL-60 (acute myeloid leukemia), and five breast cancer cell lines (SKBR3, MCF-7, MDA-MB-231, BT-549, HS-578T). The primate non-malignant kidney Vero cell line was used as the control of cytotoxicity. From the obtained results, some structure–activity relationships were outlined. Furthermore, in silico prediction of physicochemical properties and ADME parameters were determined for the derivatives with the best antiproliferative values.
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Affiliation(s)
- Pedro Martín-Acosta
- Departamento de Química Orgánica, Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez No. 2, 38206 Tenerife, Spain; (P.M.-A.); (Á.A.)
| | - Ángel Amesty
- Departamento de Química Orgánica, Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez No. 2, 38206 Tenerife, Spain; (P.M.-A.); (Á.A.)
| | - Miguel Guerra-Rodríguez
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS), Farmacología Molecular y Traslacional (BIOPharm), Universidad de Las Palmas de Gran Canaria (ULPGC), 35001 Las Palmas de Gran Canaria, Spain; (M.G.-R.); (B.G.)
| | - Borja Guerra
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS), Farmacología Molecular y Traslacional (BIOPharm), Universidad de Las Palmas de Gran Canaria (ULPGC), 35001 Las Palmas de Gran Canaria, Spain; (M.G.-R.); (B.G.)
| | - Leandro Fernández-Pérez
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS), Farmacología Molecular y Traslacional (BIOPharm), Universidad de Las Palmas de Gran Canaria (ULPGC), 35001 Las Palmas de Gran Canaria, Spain; (M.G.-R.); (B.G.)
- Correspondence: (L.F.-P.); (A.E.-B.)
| | - Ana Estévez-Braun
- Departamento de Química Orgánica, Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez No. 2, 38206 Tenerife, Spain; (P.M.-A.); (Á.A.)
- Correspondence: (L.F.-P.); (A.E.-B.)
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8
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Basha NJ, Basavarajaiah SM, Baskaran S, Kumar P. A comprehensive insight on the biological potential of embelin and its derivatives. Nat Prod Res 2021; 36:3054-3068. [PMID: 34304655 DOI: 10.1080/14786419.2021.1955361] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Naturally occurring bioactive molecules are known for their diverse biological applications such as antimicrobial, anticancer, anti-inflammatory, and analgesic activities. Also, some of the natural products act as medicinal drugs. Further, bioactive cell-permeable molecule embelin has been reported for its diverse biological activities such as antimalarial, anticancer, and anti-inflammatory in the literature. With the continuation of our research work on biologically active molecules, based on structural activity relationship and docking studies of embelin and its derivatives, we have reported target-specific anticancer and antimalarial activities of embelin and its analogs. Also, it has been reported in many recent research articles that embelin and its derivatives are known to possess medicinal properties. This review mainly highlights recent reports on broad-spectrum biological activities of the embelin and its analogs to date.
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Affiliation(s)
- N Jeelan Basha
- Department of Chemistry, Indian Academy Degree College-Autonomous, Bangalore, India
| | | | - Swathi Baskaran
- Department of Chemistry, Indian Academy Degree College-Autonomous, Bangalore, India
| | - Prasanna Kumar
- Department of Chemistry, Indian Academy Degree College-Autonomous, Bangalore, India
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9
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Kamauchi H, Kimura Y, Ushiwatari M, Suzuki M, Seki T, Takao K, Sugita Y. Synthesis and antifungal activity of polycyclic pyridone derivatives with anti-hyphal and biofilm formation activity against Candida albicans. Bioorg Med Chem Lett 2021; 37:127845. [PMID: 33571649 DOI: 10.1016/j.bmcl.2021.127845] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 01/22/2021] [Accepted: 01/29/2021] [Indexed: 10/22/2022]
Abstract
Thirty-five pyridone derivatives were synthesized, with derivatization conducted on polycyclic pyridone scaffolds, including cis- or trans-oxydecalin and other cyclic structures, by domino-Knoevenagel-electrocyclic reactions. The anti-fungal activities of the synthesized compounds were tested against Candida albicans. Ten compounds inhibited hyphal formation without inhibiting growth. Pyridones with anti-hyphal formation activity (4c, 6d, 12a and 12c) were tested for their ability to inhibit biofilm formation. Compound 6d showed both anti-hyphal and biofilm inhibition activity.
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Affiliation(s)
- Hitoshi Kamauchi
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan.
| | - Yu Kimura
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan
| | - Mikoto Ushiwatari
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan
| | - Mitsuaki Suzuki
- Department of Chemistry, Faculty of Science, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan
| | - Taishi Seki
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan
| | - Koichi Takao
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan
| | - Yoshiaki Sugita
- Department of Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyaki-dai, Sakado, Saitama 350-0295, Japan
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10
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Efficient Multicomponent Synthesis of Diverse Antibacterial Embelin-Privileged Structure Conjugates. Molecules 2020; 25:molecules25143290. [PMID: 32698422 PMCID: PMC7397138 DOI: 10.3390/molecules25143290] [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] [Received: 06/30/2020] [Revised: 07/17/2020] [Accepted: 07/17/2020] [Indexed: 12/21/2022] Open
Abstract
A library of embelin derivatives has been synthesized through a multicomponent reaction from embelin (1), aldehydes and privileged structures such as 4-hydroxycoumarin, 4-hydroxy-2H-pyran-2-one and 2-naphthol, in the presence of InCl3 as catalyst. This multicomponent reaction implies Knoevenagel condensation, Michael addition, intramolecular cyclization and dehydration. Many of the synthesized compounds were active and selective against Gram-positive bacteria, including one important multiresistant Staphylococcus aureus clinical isolate. It was found how the conjugation of diverse privileged substructure with embelin led to adducts having enhanced antibacterial activities.
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11
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Sheng Z, Ge S, Gao M, Jian R, Chen X, Xu X, Li D, Zhang K, Chen WH. Synthesis and Biological Activity of Embelin and its Derivatives: An Overview. Mini Rev Med Chem 2020; 20:396-407. [DOI: 10.2174/1389557519666191015202723] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/24/2019] [Accepted: 06/27/2019] [Indexed: 02/04/2023]
Abstract
Embelin is a naturally occurring para-benzoquinone isolated from Embelia ribes (Burm. f.)
of the Myrsinaceae family, and contains two carbonyl groups, a methine group and two hydroxyl
groups. With embelin as the lead compound, more than one hundred derivatives have been reported.
Embelin is well known for its ability to antagonize the X-linked inhibitor of apoptosis protein (XIAP)
with an IC50 value of 4.1 μM. The potential of embelin and its derivatives in the treatment of various
cancers has been extensively studied. In addition, these compounds display a variety of other biological
effects: antimicrobial, antioxidant, analgesic, anti-inflammatory, anxiolytic and antifertility activity.
This paper reviews the recent progress in the synthesis and biological activity of embelin and its derivatives.
Their cellular mechanisms of action and prospects in the research and development of new
drugs are also discussed.
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Affiliation(s)
- Zhaojun Sheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Siyuan Ge
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Min Gao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Rongchao Jian
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Xiaole Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Xuetao Xu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Dongli Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Kun Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Wen-Hua Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
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12
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Suri M, Hussain FL, Gogoi C, Das P, Pahari P. Magnetically recoverable silica catalysed solvent-free domino Knoevenagel-hetero-Diels-Alder reaction to access divergent chromenones. Org Biomol Chem 2020; 18:2058-2062. [PMID: 32154551 DOI: 10.1039/d0ob00284d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A three-component domino Knoevenagel-hetero-Diels-Alder (DKHDA) reaction between 1,3-dicarbonyl, aldehydes/ketones, and alkenes/alkynes leading to the divergent synthesis of chromenones, dihydrochromenones, and spirocyclic chromenones is reported. The reaction was carried out under solvent-free conditions using a magnetically separable silica (Fe3O4@SiO2) catalyst. While two component DKHDA reactions are known, this is the first example of a three component DKHDA reaction involving 1,3-dicarbonyl, ketones, and alkynes producing spirocyclic pyranone derivatives. Twenty-six different highly substituted chromenones were synthesized using this methodology. A wide substrate scope due to the multicomponent nature of the reaction, high atom economy, the use of inexpensive and non-toxic recyclable silica as the catalyst, and solvent free reaction conditions make it an advantageous process. The catalyst was characterized using different analytical techniques such as XRD, IR, HRTEM, VSM, and TGA. Based on the earlier reports a mechanism has also been proposed.
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Affiliation(s)
- Mrinaly Suri
- Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat-785006, Assam, India.
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Ghosh M, Jain K, Khan S, Das K, Ghorai TK. New Dual-Functional and Reusable Bimetallic Y 2ZnO 4 Nanocatalyst for Organic Transformation under Microwave/Green Conditions. ACS OMEGA 2020; 5:4973-4981. [PMID: 32201783 PMCID: PMC7081418 DOI: 10.1021/acsomega.9b03875] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 02/19/2020] [Indexed: 06/10/2023]
Abstract
A novel bimetallic and reusable Y2ZnO4 nanocatalyst was synthesized by a simple coprecipitation method. The prepared nanocatalyst exhibited dual catalytic activity and was characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), energy-dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM). The average crystallite and grain sizes were found to be 17 ± 1 and 10 ± 2 nm, respectively. On the one hand, the catalytic activity of the nanocatalyst was studied for the Knoevenagel condensation reaction of aromatic aldehydes with active methylene compounds, such as ethyl cyanoacetate and malononitrile, under microwave irradiation and solvent-free conditions. On the other hand, the nanoparticles also showed faster photocatalytic activity against methyl orange (MO) compared to other dyes. The nanocatalyst was easily recoverable by a simple filtration method and was recycled without any significant loss of catalytic activity. The advantages of this nanocatalyst were a simple workup procedure, high reaction yields, solvent-free conditions, reusability, and a short reaction time under green reaction conditions.
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Affiliation(s)
- Mithun
Kumar Ghosh
- Nanomaterials
and Crystal Designing Laboratory, Department of Chemistry, Indira Gandhi National Tribal University, Amarkantak 484887, Madhya Pradesh, India
| | - Kavita Jain
- Advanced
Organic Synthesis Laboratory, Department of Chemistry, Dr. Harisingh Gour Vishwavidyalaya (Central University), Sagar 470003, Madhya Pradesh, India
| | - Siddique Khan
- Advanced
Organic Synthesis Laboratory, Department of Chemistry, Dr. Harisingh Gour Vishwavidyalaya (Central University), Sagar 470003, Madhya Pradesh, India
| | - Kalpataru Das
- Advanced
Organic Synthesis Laboratory, Department of Chemistry, Dr. Harisingh Gour Vishwavidyalaya (Central University), Sagar 470003, Madhya Pradesh, India
| | - Tanmay Kumar Ghorai
- Nanomaterials
and Crystal Designing Laboratory, Department of Chemistry, Indira Gandhi National Tribal University, Amarkantak 484887, Madhya Pradesh, India
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14
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Cao Z, Gao F, Zhao J, Wei X, Cheng Q, Zhong J, Lin C, Shu J, Fu C, Shen L. Bio-Based Coating Materials Derived from Acetoacetylated Soybean Oil and Aromatic Dicarboxaldehydes. Polymers (Basel) 2019; 11:E1809. [PMID: 31689971 PMCID: PMC6918255 DOI: 10.3390/polym11111809] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 10/21/2019] [Accepted: 11/01/2019] [Indexed: 11/21/2022] Open
Abstract
Bio-based coating materials were prepared from epoxidized soybean oil as a renewable source. Acetoacetylated soybean oil was synthesized by the ring-opened and transesterification reaction of epoxidized soybean oil, and its chemical structure was characterized by nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC), and rheometric viscosity analyses. On the basis of acetoacetylated soybean oil, several bio-based coating materials were prepared using different aromatic dicarboxaldehydes (1,2-benzenedialdehyde, 1,3-benzenedialdehyde, 1,4-phthalaldehyde, 4,4'-biphenyldicarboxaldehyde) and characterized. The resulting films possess good performance, including the highest glass transition temperature of 54 °C, a Young's modulus of 24.91 MPa, tensile strength of 5.65 MPa, and an elongation at break of 286%. Thus, this work demonstrates the Knoevenagel condensation reaction, which is based on soybean oil as a potential newer eco-friendly raw material.
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Affiliation(s)
- Zhiyuan Cao
- Jiangxi Engineering Laboratory of Waterborne Coating, School of Chemistry and Chemical Engineering, Jiangxi Science &Technology Normal University, Nanchang 330013, China.
| | - Fei Gao
- Jiangxi Engineering Laboratory of Waterborne Coating, School of Chemistry and Chemical Engineering, Jiangxi Science &Technology Normal University, Nanchang 330013, China.
| | - Jinze Zhao
- Jiangxi Engineering Laboratory of Waterborne Coating, School of Chemistry and Chemical Engineering, Jiangxi Science &Technology Normal University, Nanchang 330013, China.
| | - Xiao Wei
- Jiangxi Engineering Laboratory of Waterborne Coating, School of Chemistry and Chemical Engineering, Jiangxi Science &Technology Normal University, Nanchang 330013, China.
| | - Qian Cheng
- Jiangxi Engineering Laboratory of Waterborne Coating, School of Chemistry and Chemical Engineering, Jiangxi Science &Technology Normal University, Nanchang 330013, China.
| | - Jiang Zhong
- Jiangxi Engineering Laboratory of Waterborne Coating, School of Chemistry and Chemical Engineering, Jiangxi Science &Technology Normal University, Nanchang 330013, China.
| | - Cong Lin
- Jiangxi Engineering Laboratory of Waterborne Coating, School of Chemistry and Chemical Engineering, Jiangxi Science &Technology Normal University, Nanchang 330013, China.
| | - Jinbing Shu
- Jiangxi Engineering Laboratory of Waterborne Coating, School of Chemistry and Chemical Engineering, Jiangxi Science &Technology Normal University, Nanchang 330013, China.
| | - Changqing Fu
- Jiangxi Engineering Laboratory of Waterborne Coating, School of Chemistry and Chemical Engineering, Jiangxi Science &Technology Normal University, Nanchang 330013, China.
| | - Liang Shen
- Jiangxi Engineering Laboratory of Waterborne Coating, School of Chemistry and Chemical Engineering, Jiangxi Science &Technology Normal University, Nanchang 330013, China.
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15
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Kamauchi H, Noji M, Kinoshita K, Takanami T, Koyama K. Coumarins with an unprecedented tetracyclic skeleton and coumarin dimers from chemically engineered extracts of a marine-derived fungus. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.04.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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16
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Ko JH, Lee SG, Yang WM, Um JY, Sethi G, Mishra S, Shanmugam MK, Ahn KS. The Application of Embelin for Cancer Prevention and Therapy. Molecules 2018. [PMID: 29522451 PMCID: PMC6017120 DOI: 10.3390/molecules23030621] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Embelin is a naturally-occurring benzoquinone compound that has been shown to possess many biological properties relevant to human cancer prevention and treatment, and increasing evidence indicates that embelin may modulate various characteristic hallmarks of tumor cells. This review summarizes the information related to the various oncogenic pathways that mediate embelin-induced cell death in multiple cancer cells. The mechanisms of the action of embelin are numerous, and most of them induce apoptotic cell death that may be intrinsic or extrinsic, and modulate the NF-κB, p53, PI3K/AKT, and STAT3 signaling pathways. Embelin also induces autophagy in cancer cells; however, these autophagic cell-death mechanisms of embelin have been less reported than the apoptotic ones. Recently, several autophagy-inducing agents have been used in the treatment of different human cancers, although they require further exploration before being transferred from the bench to the clinic. Therefore, embelin could be used as a potential agent for cancer therapy.
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Affiliation(s)
- Jeong-Hyeon Ko
- College of Korean Medicine, Kyung Hee University, 24 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
| | - Seok-Geun Lee
- College of Korean Medicine, Kyung Hee University, 24 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
| | - Woong Mo Yang
- College of Korean Medicine, Kyung Hee University, 24 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
| | - Jae-Young Um
- College of Korean Medicine, Kyung Hee University, 24 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
| | - Gautam Sethi
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam.
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam.
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore.
| | - Srishti Mishra
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore.
| | - Muthu K Shanmugam
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore.
| | - Kwang Seok Ahn
- College of Korean Medicine, Kyung Hee University, 24 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
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17
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López-Rojas P, Janeczko M, Kubiński K, Amesty Á, Masłyk M, Estévez-Braun A. Synthesis and Antimicrobial Activity of 4-Substituted 1,2,3-Triazole-Coumarin Derivatives. Molecules 2018; 23:E199. [PMID: 29346325 PMCID: PMC6017388 DOI: 10.3390/molecules23010199] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 01/15/2018] [Accepted: 01/15/2018] [Indexed: 01/08/2023] Open
Abstract
A new series of coumarin-1,2,3-triazole conjugates with varied alkyl, phenyl and heterocycle moieties at C-4 of the triazole nucleus were synthesized using a copper(I)-catalysed Huisgen 1,3-dipolar cycloaddition reaction of corresponding O-propargylated coumarin (3) or N-propargylated coumarin (6) with alkyl or aryl azides. Based on their minimal inhibitory concentrations (MICs) against selected microorganisms, six out of twenty-six compounds showed significant antibacterial activity towards Enterococcus faecalis (MIC = 12.5-50 µg/mL). Moreover, the synthesized triazoles show relatively low toxicity against human erythrocytes.
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Affiliation(s)
- Priscila López-Rojas
- Instituto Universitario de Bio-Orgánica Antonio González (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez 2, 38206 La Laguna, Tenerife, Spain.
| | - Monika Janeczko
- Department of Molecular Biology, The John Paul II Catholic University of Lublin, ul. Konstantynów 1i, 20-708 Lublin, Poland.
| | - Konrad Kubiński
- Department of Molecular Biology, The John Paul II Catholic University of Lublin, ul. Konstantynów 1i, 20-708 Lublin, Poland.
| | - Ángel Amesty
- Instituto Universitario de Bio-Orgánica Antonio González (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez 2, 38206 La Laguna, Tenerife, Spain.
| | - Maciej Masłyk
- Department of Molecular Biology, The John Paul II Catholic University of Lublin, ul. Konstantynów 1i, 20-708 Lublin, Poland.
| | - Ana Estévez-Braun
- Instituto Universitario de Bio-Orgánica Antonio González (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez 2, 38206 La Laguna, Tenerife, Spain.
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18
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Martín-Acosta P, Haider S, Amesty Á, Aichele D, Jose J, Estévez-Braun A. A new family of densely functionalized fused-benzoquinones as potent human protein kinase CK2 inhibitors. Eur J Med Chem 2018; 144:410-423. [DOI: 10.1016/j.ejmech.2017.12.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 12/14/2017] [Accepted: 12/15/2017] [Indexed: 12/20/2022]
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19
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Evans CS, Davis LO. Recent Advances in Organocatalyzed Domino C-C Bond-Forming Reactions. Molecules 2017; 23:E33. [PMID: 29295474 PMCID: PMC5943935 DOI: 10.3390/molecules23010033] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 12/19/2017] [Accepted: 12/22/2017] [Indexed: 01/16/2023] Open
Abstract
Reactions that form a C-C bond make up a foundational pillar of synthetic organic chemistry. In addition, organocatalysis has emerged as an easy, environmentally-friendly way to promote this type of bond formation. Since around 2000, organocatalysts have been used in a variety of C-C bond-forming reactions including Michael and aldol additions, Mannich-type reactions, and Diels-Alder reactions, to name a few. Many of these methodologies have been refined and further developed to include cascade and domino processes. This review will focus on recent advances in this area with an emphasis on methodologies having applications in the synthesis of biologically-significant compounds.
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Affiliation(s)
- Cleo S Evans
- Department of Chemistry and Biochemistry, Berry College, P.O. Box 495016, Mt. Berry, GA 30149, USA.
| | - Lindsey O Davis
- Department of Chemistry and Biochemistry, Berry College, P.O. Box 495016, Mt. Berry, GA 30149, USA.
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20
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Gudala S, Sharma A, Rao VR, Kumar A, Penta S. Recent developments in synthesis of embelin heterocyclic derivatives and their biological applications. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-017-0348-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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21
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Nain-Perez A, Barbosa LCA, Maltha CRÁ, Forlani G. Natural Abenquines and Their Synthetic Analogues Exert Algicidal Activity against Bloom-Forming Cyanobacteria. JOURNAL OF NATURAL PRODUCTS 2017; 80:813-818. [PMID: 28319393 DOI: 10.1021/acs.jnatprod.6b00629] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Abenquines are natural quinones, produced by some Streptomycetes, showing the ability to inhibit cyanobacterial growth in the 1 to 100 μM range. To further elucidate their biological significance, the synthesis of several analogues (4f-h, 5a-h) allowed us to identify some steric and electronic requirements for bioactivity. Replacing the acetyl by a benzoyl group in the quinone core and also changing the amino acid moiety with ethylpyrimidinyl or ethylpyrrolidinyl groups resulted in analogues 25-fold more potent than the natural abenquines. The two most effective analogues inhibited the proliferation of five cyanobacterial strains tested, with IC50 values ranging from 0.3 to 3 μM. These compounds may be useful leads for the development of an effective strategy for the control of cyanobacterial blooms.
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Affiliation(s)
- Amalyn Nain-Perez
- Department of Chemistry, Universidade Federal de Minas Gerais , Avenida Pres. Antônio Carlos, 6627, Campus Pampulha, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Luiz Cláudio Almeida Barbosa
- Department of Chemistry, Universidade Federal de Minas Gerais , Avenida Pres. Antônio Carlos, 6627, Campus Pampulha, CEP 31270-901, Belo Horizonte, MG, Brazil
- Department of Chemistry, Federal University of Viçosa , 36570-000, Viçosa, MG, Brazil
| | | | - Giuseppe Forlani
- Department of Life Science and Biotechnology, University of Ferrara , Via L. Borsari 46, I-44121 Ferrara, Italy
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22
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Martín-Acosta P, Feresin G, Tapia A, Estévez-Braun A. Microwave-Assisted Organocatalytic Intramolecular Knoevenagel/Hetero Diels–Alder Reaction with O-(Arylpropynyloxy)-Salicylaldehydes: Synthesis of Polycyclic Embelin Derivatives. J Org Chem 2016; 81:9738-9756. [DOI: 10.1021/acs.joc.6b01818] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pedro Martín-Acosta
- Instituto
Universitario de Bio-Orgánica Antonio González (CIBICAN),
Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez No. 2, 38206, La Laguna, Tenerife, Spain
| | - Gabriela Feresin
- Instituto
de Biotecnología-Instituto de Ciencias Básicas, Universidad Nacional de San Juan, Av. Libertador General San Martín 1109 (O), CP 5400, San Juan, Argentina
| | - Alejandro Tapia
- Instituto
de Biotecnología-Instituto de Ciencias Básicas, Universidad Nacional de San Juan, Av. Libertador General San Martín 1109 (O), CP 5400, San Juan, Argentina
| | - Ana Estévez-Braun
- Instituto
Universitario de Bio-Orgánica Antonio González (CIBICAN),
Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez No. 2, 38206, La Laguna, Tenerife, Spain
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