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Lescano LE, Salazar MO, Furlan RLE. Chemically engineered essential oils prepared through thiocyanation under solvent-free conditions: chemical and bioactivity alteration. NATURAL PRODUCTS AND BIOPROSPECTING 2024; 14:35. [PMID: 38822174 PMCID: PMC11143095 DOI: 10.1007/s13659-024-00456-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 05/17/2024] [Indexed: 06/02/2024]
Abstract
The generation of chemically engineered essential oils (CEEOs) prepared from bi-heteroatomic reactions using ammonium thiocyanate as a source of bioactive compounds is described. The impact of the reaction on the chemical composition of the mixtures was qualitatively demonstrated through GC-MS, utilizing univariate and multivariate analysis. The reaction transformed most of the components in the natural mixtures, thereby expanding the chemical diversity of the mixtures. Changes in inhibition properties between natural and CEEOs were demonstrated through acetylcholinesterase TLC autography, resulting in a threefold increase in the number of positive events due to the modification process. The chemically engineered Origanum vulgare L. essential oil was subjected to bioguided fractionation, leading to the discovery of four new active compounds with similar or higher potency than eserine against the enzyme. The results suggest that the directed chemical transformation of essential oils can be a valuable strategy for discovering new acetylcholinesterase (AChE) inhibitors.
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Affiliation(s)
- Liz E Lescano
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR), Suipacha 531, 2000, Rosario, Argentina
| | - Mario O Salazar
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR), Suipacha 531, 2000, Rosario, Argentina.
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000, Rosario, Argentina.
| | - Ricardo L E Furlan
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR), Suipacha 531, 2000, Rosario, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000, Rosario, Argentina
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2
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Beato A, Haudecoeur R, Boucherle B, Peuchmaur M. Expanding Chemical Frontiers: Approaches for Generating Diverse and Bioactive Natural Product-Like Compounds Libraries from Extracts. Chemistry 2024; 30:e202304166. [PMID: 38372433 DOI: 10.1002/chem.202304166] [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: 12/14/2023] [Revised: 02/05/2024] [Accepted: 02/13/2024] [Indexed: 02/20/2024]
Abstract
The realms of natural products and synthetic compounds exhibit distinct chemical spaces that not only differ but also complement each other. While the convergence of these two domains has been explored through semisynthesis and conventional pharmacomodulation endeavours applied to natural frameworks, a recent and innovative approach has emerged that involves the combinatorial generation of libraries of 'natural product-like compounds' (NPLCs) through the direct synthetic derivatization of natural extracts. This has led to the production of numerous NPLCs that incorporate structural elements from both their natural (multiple saturated rings, oxygen content, chiral centres) and synthetic (aromatic rings, nitrogen and halogen content, drug-like properties) precursors. Through careful selection of extracts and reagents, specific bioactivities have been achieved, and this strategy has been deployed in various ways, showing great promise without reaching its full potential to date. This review seeks to provide an overview of reported examples involving the chemical engineering of extracts, showcasing a spectrum of natural product alterations spanning from simple substitutions to complete scaffold remodelling. It also includes an analysis of the accomplishments, perspectives and technical challenges within this field.
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Affiliation(s)
- Aurélien Beato
- Univ. Grenoble Alpes, CNRS, DPM, Bâtiment E Pôle Chimie BP 53, 38000, Grenoble, France
| | - Romain Haudecoeur
- Univ. Grenoble Alpes, CNRS, DPM, Bâtiment E Pôle Chimie BP 53, 38000, Grenoble, France
| | - Benjamin Boucherle
- Univ. Grenoble Alpes, CNRS, DPM, Bâtiment E Pôle Chimie BP 53, 38000, Grenoble, France
| | - Marine Peuchmaur
- Univ. Grenoble Alpes, CNRS, DPM, Bâtiment E Pôle Chimie BP 53, 38000, Grenoble, France
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3
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Sirimangkalakitti N, Harada K, Yamada M, Arai M, Arisawa M. A New Tetracyclic Bromopyrrole-Imidazole Derivative through Direct Chemical Diversification of Substances Present in Natural Product Extract from Marine Sponge Petrosia ( Strongylophora) sp. Molecules 2022; 28:143. [PMID: 36615336 PMCID: PMC9821877 DOI: 10.3390/molecules28010143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/16/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Chemical diversification of substances present in natural product extracts can lead to a number of natural product-like compounds with a better chance of desirable bioactivities. The aim of this work was to discover unprecedented chemical conversion and produce new compounds through a one-step reaction of substances present in the extracts of marine sponges. In this report, a new unnatural tetracyclic bromopyrrole-imidazole derivative, rac-6-OEt-cylindradine A (1), was created from a chemically diversified extract of the sponge Petrosia (Strongylophora) sp. We also confirmed that 1 originated from naturally occurring (-)-cylindradine A (2) via a new reaction pattern. Moreover, (-)-dibromophakellin (3) and 4,5-dibromopyrrole-2-carboxylic acid (4), as well as 2, were reported herein for the first time in this genus. Studies on the possible reaction mechanism and bioactivities were also conducted. The results indicate that the direct chemical diversification of substances present in natural product extracts can be a speedy and useful strategy for the discovery of new compounds.
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Affiliation(s)
| | | | | | - Masayoshi Arai
- Graduate School of Pharmaceutical Sciences, Osaka University, 1–6 Yamadaoka, Suita 565-0871, Osaka, Japan
| | - Mitsuhiro Arisawa
- Graduate School of Pharmaceutical Sciences, Osaka University, 1–6 Yamadaoka, Suita 565-0871, Osaka, Japan
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4
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Cabezudo I, Salazar MO, Ramallo IA, Furlan RLE. Effect-directed analysis in food by thin-layer chromatography assays. Food Chem 2022; 390:132937. [PMID: 35569399 DOI: 10.1016/j.foodchem.2022.132937] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 03/20/2022] [Accepted: 04/07/2022] [Indexed: 11/17/2022]
Abstract
Thin-layer chromatography (TLC) is widely used for food analysis and quality control. As an open chromatographic system, TLC is compatible with microbial-, biochemical-, and chemical-based derivatization methods. This compatibility makes it possible to run in situ bioassays directly on the plate to obtain activity-profile chromatograms, i.e., the effect-directed analysis of the sample. Many of the properties that can be currently measured using this assay format are related to either desired or undesired features for food related products. The TLC assays can detect compounds related to the stability of foods (antioxidant, antimicrobial, antibrowning, etc.), contaminants (antibiotics, pesticides, estrogenic compounds, etc.), and compounds that affect the absorption, metabolism or excretion of nutrients and metabolites or could improve the consumers health (enzyme inhibitors). In this article, different food related TLC-assays are reviewed. The different detection systems used, the way in which they are applied as well as selected examples are discussed.
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Affiliation(s)
- Ignacio Cabezudo
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000 Rosario, Argentina
| | - Mario O Salazar
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000 Rosario, Argentina
| | - I Ayelen Ramallo
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000 Rosario, Argentina
| | - Ricardo L E Furlan
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Suipacha 531, 2000 Rosario, Argentina.
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5
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Adessi TG, Ana Y, Stempin CC, García MC, Bisogno FR, Nicotra VE, García ME. Psilostachyins as trypanocidal compounds: Bioguided fractionation of Ambrosia tenuifolia chemically modified extract. PHYTOCHEMISTRY 2022; 194:113014. [PMID: 34798411 DOI: 10.1016/j.phytochem.2021.113014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 10/29/2021] [Accepted: 11/08/2021] [Indexed: 06/13/2023]
Abstract
This work focusses on the chemical diversification of an Ambrosia tenuifolia extract and its bioguided fractionation, aiming to unveil the chemical entity responsible for the trypanocidal activity. Besides, a revision of the phytochemical study of this species, based on previous reports of the antiparasitic psilostachyins A and C as main compounds, was conducted. To improve the biological properties of a plant extract through a simple chemical reaction, the oxidative diversification of the dichloromethane extract of this plant species was carried out. A bioguided fractionation of a chemically modified extract was performed by evaluating the inhibitory activity against Trypanosoma cruzi trypomastigotes. This experiment led to the isolation of one of the most active compounds. In general terms, epoxidized metabolites were obtained as a result of the oxidation of the major metabolite of the species. The trypanocidal activity of some tested metabolites overperformed the reference drug, benznidazole, displaying no cytotoxicity at trypanocidal concentrations. Key structure-activity relationships were obtained for designing previously undescribed antiparasitic sesquiterpene lactones.
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Affiliation(s)
- Tonino G Adessi
- Facultad de Ciencias Químicas, Universidad Nacional de Córdoba (UNC), Ciudad Universitaria, X5000HUA, Córdoba, Argentina; Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba, Argentina
| | - Yamile Ana
- Facultad de Ciencias Químicas, Universidad Nacional de Córdoba (UNC), Ciudad Universitaria, X5000HUA, Córdoba, Argentina; Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI-CONICET), Córdoba, Argentina
| | - Cinthia C Stempin
- Facultad de Ciencias Químicas, Universidad Nacional de Córdoba (UNC), Ciudad Universitaria, X5000HUA, Córdoba, Argentina; Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI-CONICET), Córdoba, Argentina
| | - Mónica C García
- Facultad de Ciencias Químicas, Universidad Nacional de Córdoba (UNC), Ciudad Universitaria, X5000HUA, Córdoba, Argentina; Unidad de Investigación y Desarrollo en Tecnología Farmacéutica, (UNITEFA-CONICET), Córdoba, Argentina
| | - Fabricio R Bisogno
- Facultad de Ciencias Químicas, Universidad Nacional de Córdoba (UNC), Ciudad Universitaria, X5000HUA, Córdoba, Argentina; Instituto de Investigaciones en Físico-Química de Córdoba (INFIQC-CONICET), Córdoba, Argentina
| | - Viviana E Nicotra
- Facultad de Ciencias Químicas, Universidad Nacional de Córdoba (UNC), Ciudad Universitaria, X5000HUA, Córdoba, Argentina; Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba, Argentina
| | - Manuela E García
- Facultad de Ciencias Químicas, Universidad Nacional de Córdoba (UNC), Ciudad Universitaria, X5000HUA, Córdoba, Argentina; Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba, Argentina.
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6
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Li HP, He XH, Peng C, Li JL, Han B. A straightforward access to trifluoromethylated natural products through late-stage functionalization. Nat Prod Rep 2022; 40:988-1021. [DOI: 10.1039/d2np00056c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This review summarizes the applications of late-stage strategies in the direct trifluoromethylation of natural products in the past ten years, with particular emphasis on the reaction model of each method.
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Affiliation(s)
- He-Ping Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Xiang-Hong He
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Jun-Long Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
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7
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Guo Q, Chen J, Ren Y, Yin Z, Zhang J, Yang B, Wang X, Yin W, Zhang W, Ding G, Chen L. Hydrazine-Containing Heterocycle Cytochalasan Derivatives From Hydrazinolysis of Extracts of a Desert Soil-Derived Fungus Chaetomium madrasense 375. Front Chem 2021; 9:620589. [PMID: 33968893 PMCID: PMC8097171 DOI: 10.3389/fchem.2021.620589] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 03/01/2021] [Indexed: 11/13/2022] Open
Abstract
"Diversity-enhanced extracts" is an effective method of producing chemical libraries for the purpose of drug discovery. Three rare new cytochalasan derivative chaetoglobosins B1-B3 (1-3) were obtained from chemically engineered crude broth extracts of Chaetomium madrasense 375 prepared by reacting with hydrazine monohydrate and four known metabolite chaetoglobosins (4-7) were also identified from the fungus. The structures were identified by NMR and MS analysis and electronic circular dichroism simulation. In addition, the antiproliferative activities of these compounds were also evaluated, and the drug-resistant activities of cytochalasans were evaluated for the first time. Compound 6 possessed potent activity against four human cancer cells (A549, HCC827, SW620, and MDA-MB-231), and two drug-resistant HCC827 cells (Gefitinib-resistant, Osimertinib-resistant) compared with the positive controls.
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Affiliation(s)
- Qingfeng Guo
- Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Huanghe Science and Technology College, Zhengzhou, China
| | - Jinhua Chen
- Department of Pharmacy, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Yuwei Ren
- Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Huanghe Science and Technology College, Zhengzhou, China
| | - Zhenhua Yin
- Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Huanghe Science and Technology College, Zhengzhou, China
| | - Juanjuan Zhang
- Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Huanghe Science and Technology College, Zhengzhou, China
| | - Baocheng Yang
- Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Huanghe Science and Technology College, Zhengzhou, China
| | - Xuewei Wang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Wenbing Yin
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Wancun Zhang
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Gang Ding
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science and Union Medical College, Beijing, China
| | - Lin Chen
- Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Huanghe Science and Technology College, Zhengzhou, China
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8
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Sulistyowaty MI, Uyen NH, Suganuma K, Chitama BYA, Yahata K, Kaneko O, Sugimoto S, Yamano Y, Kawakami S, Otsuka H, Matsunami K. Six New Phenylpropanoid Derivatives from Chemically Converted Extract of Alpinia galanga (L.) and Their Antiparasitic Activities. Molecules 2021; 26:1756. [PMID: 33801067 PMCID: PMC8004034 DOI: 10.3390/molecules26061756] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/16/2021] [Accepted: 03/18/2021] [Indexed: 01/22/2023] Open
Abstract
Chemical conversion of the extract of natural resources is a very attractive way to expand the chemical space to discover bioactive compounds. In order to search for new medicines to treat parasitic diseases that cause high morbidity and mortality in affected countries in the world, the ethyl acetate extract from the rhizome of Alpinia galanga (L.) has been chemically converted by epoxidation using dioxirane generated in situ. The biological activity of chemically converted extract (CCE) of A. galanga (L.) significantly increased the activity against Leishmania major up to 82.6 ± 6.2 % at 25 μg/mL (whereas 2.7 ± 0.8% for the original extract). By bioassay-guided fractionation, new phenylpropanoids (1-6) and four known compounds, hydroquinone (7), 4-hydroxy(4-hydroxyphenyl)methoxy)benzaldehyde (8), isocoumarin cis 4-hydroxymelein (9), and (2S,3S,6R,7R,9S,10S)-humulene triepoxide (10) were isolated from CCE. The structures of isolated compounds were determined by spectroscopic analyses of 1D and 2D NMR, IR, and MS spectra. The most active compound was hydroquinone (7) with IC50 = 0.37 ± 1.37 μg/mL as a substantial active principle of CCE. In addition, the new phenylpropanoid 2 (IC50 = 27.8 ± 0.34 μg/mL) also showed significant activity against L. major compared to the positive control miltefosine (IC50 = 7.47 ± 0.3 μg/mL). The activities of the isolated compounds were also evaluated against Plasmodium falciparum, Trypanosoma brucei gambisense and Trypanosoma brucei rhodeisense. Interestingly, compound 2 was selectively active against trypanosomes with potent activity. To the best of our knowledge, this is the first report on the bioactive "unnatural" natural products from the crude extract of A. galanga (L.) by chemical conversion and on its activities against causal pathogens of leishmaniasis, trypanosomiasis, and malaria.
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Affiliation(s)
- Melanny Ika Sulistyowaty
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (M.I.S.); (N.H.U.); (S.S.); (Y.Y.)
- Faculty of Pharmacy, Universitas Airlangga, Surabaya 60286, Indonesia
| | - Nguyen Hoang Uyen
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (M.I.S.); (N.H.U.); (S.S.); (Y.Y.)
| | - Keisuke Suganuma
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada, Obihiro 080-8555, Hokkaido, Japan;
| | - Ben-Yeddy Abel Chitama
- Department of Protozoology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan; (B.-Y.A.C.); (K.Y.); (O.K.)
| | - Kazuhide Yahata
- Department of Protozoology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan; (B.-Y.A.C.); (K.Y.); (O.K.)
| | - Osamu Kaneko
- Department of Protozoology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan; (B.-Y.A.C.); (K.Y.); (O.K.)
| | - Sachiko Sugimoto
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (M.I.S.); (N.H.U.); (S.S.); (Y.Y.)
| | - Yoshi Yamano
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (M.I.S.); (N.H.U.); (S.S.); (Y.Y.)
| | - Susumu Kawakami
- Department of Natural Products Chemistry, Faculty of Pharmacy, Yasuda Women’s University, 6-13-1 Yasuhigashi, Asaminami-ku, Hiroshima 731-0153, Japan; (S.K.); (H.O.)
| | - Hideaki Otsuka
- Department of Natural Products Chemistry, Faculty of Pharmacy, Yasuda Women’s University, 6-13-1 Yasuhigashi, Asaminami-ku, Hiroshima 731-0153, Japan; (S.K.); (H.O.)
| | - Katsuyoshi Matsunami
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (M.I.S.); (N.H.U.); (S.S.); (Y.Y.)
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9
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Solís CM, Salazar MO, Ramallo IA, García P, Furlan RLE. A Tyrosinase Inhibitor from a Nitrogen-Enriched Chemically Engineered Extract. ACS COMBINATORIAL SCIENCE 2019; 21:622-627. [PMID: 31361945 DOI: 10.1021/acscombsci.9b00064] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The enzyme tyrosinase is involved in the biosynthesis of melanin and the enzymatic browning of fruits and vegetables, and therefore, its inhibitors have potential to treat hyperpigmentary disorders or to function as food antibrowning agents. The use of hydrazine monohydrate as a reagent to prepare chemically engineered extracts can lead to semisynthetic compounds that contain the portion N-N, a fragment rarely found in natural products and present in some tyrosinase inhibitors. Here, we report the tyrosinase inhibition screening of a series of chemically engineered extracts that are diversified by reaction with hydrazine. LC-MS was used to evaluate the change in composition produced by the reaction. Bioguided fractionation of the most active chemically engineered extract, prepared from Matricaria recutita L., led to the discovery of a pyrazole that inhibits tyrosinase with an IC50 value of 28.20 ± 1.13 μM. This compound was produced by a one-pot double chemical transformation of its natural precursor, which includes an unexpected selective removal of one -OH group.
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Affiliation(s)
- Carlos M. Solís
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, 2000, Rosario, Argentina
| | - Mario O. Salazar
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, 2000, Rosario, Argentina
| | - I. Ayelen Ramallo
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, 2000, Rosario, Argentina
| | - Paula García
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, 2000, Rosario, Argentina
| | - Ricardo L. E. Furlan
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, 2000, Rosario, Argentina
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10
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Righi D, Marcourt L, Koval A, Ducret V, Pellissier L, Mainetti A, Katanaev VL, Perron K, Wolfender JL, Queiroz EF. Chemo-Diversification of Plant Extracts Using a Generic Bromination Reaction and Monitoring by Metabolite Profiling. ACS COMBINATORIAL SCIENCE 2019; 21:171-182. [PMID: 30607939 DOI: 10.1021/acscombsci.8b00132] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A generic procedure for direct bromination of polyphenol in crude plant extracts was developed to generate multiple "unnatural" halogenated natural products for further bioassay evaluation. To better control the halogenation procedure, the bromination was optimized with a flavonoid standard, and the reactions were monitored by high-performance liquid chromatography photometric diode array coupled to the evaporative light scattering detection (ELSD). ELSD detection was successfully used for a relative yield estimation of the compounds obtained. From the halogenation of hesperitin (11), five brominated compounds were obtained. After optimization, the reaction was successfully applied to the methanolic extract of Citrus sinensis peels, a typical waste biomass and also to the methanolic extract of the medicinal plant Curcuma longa. In both cases, the methanolic extracts were profiled by NMR for a rapid estimation of the polyphenol versus primary metabolite content. An enriched secondary metabolites extract was obtained using vacuum liquid chromatography and submitted to bromination. Metabolite profiling performed by ultrahigh purity liquid chromatography time-of-flight high-resolution mass spectrometry revealed the presence of various halogenated products. To isolate these compounds, the reactions were scaled up, and six halogenated analogues were isolated and fully characterized by NMR and high-resolution electrospray ionization mass spectrometry analyses. The antibacterial properties of these compounds were evaluated using in vitro bioassays against multiresistant strains of Staphylococcus aureus and Pseudomonas aeruginosa. Some of the halogenated derivatives obtained presented moderate antibacterial properties.
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Affiliation(s)
| | | | | | - Verena Ducret
- Microbiology Unit, Department of Botany and Plant Biology, University of Geneva, 30 quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
| | | | | | - Vladimir L. Katanaev
- School of Biomedicine, Far Eastern Federal University, 8 Sukhanova St., 690090 Vladivostok, Russia
| | - Karl Perron
- Microbiology Unit, Department of Botany and Plant Biology, University of Geneva, 30 quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
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11
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A Bioactive Trypanosoma cruzi Bromodomain Inhibitor from Chemically Engineered Extracts. ACS COMBINATORIAL SCIENCE 2018; 20:220-228. [PMID: 29481050 DOI: 10.1021/acscombsci.7b00172] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A set of chemically engineered extracts enriched in compounds including N-N and N-O fragments in their structures was prepared. Bromodomain binding screening and bioguided fractionation led to the identification of one oxime hit that interacts with TcBDF3 with affinity in the submicromolar range and that shows interesting antiparasitic properties against the different life cycle stages of T. cruzi.
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Salazar MO, Osella MI, Ramallo IA, Furlan RLE. Nα-arylsulfonyl histamines as selective β-glucosidase inhibitors. RSC Adv 2018; 8:36209-36218. [PMID: 35558478 PMCID: PMC9088825 DOI: 10.1039/c8ra06625f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 10/19/2018] [Indexed: 12/23/2022] Open
Abstract
Nα-benzenesulfonylhistamine, a new semi-synthetic β-glucosidase inhibitor, was obtained by bioactivity-guided isolation from a chemically engineered extract of Urtica urens L. prepared by reaction with benzenesulfonyl chloride. In order to identify better β-glucosidase inhibitors, a new series of Nα,Nτ-di-arylsulfonyl and Nα-arylsulfonyl histamine derivatives was prepared. Biological studies revealed that the β-glucosidase inhibition was in a micromolar range for several Nα-arylsulfonyl histamine compounds of the series, Nα-4-fluorobenzenesulfonyl histamine being the most powerful compound. Besides, this reversible and competitive inhibitor presented a good selectivity for β-glucosidase with respect to other target enzymes including α-glucosidase. A selective β-glucosidase inhibitor was discovered using the chemically engineered extracts approach.![]()
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Affiliation(s)
- M. O. Salazar
- Farmacognosia
- Departamento de Química Orgánica
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Rosario S2002LRK
| | - M. I. Osella
- Farmacognosia
- Departamento de Química Orgánica
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Rosario S2002LRK
| | - I. A. Ramallo
- Farmacognosia
- Departamento de Química Orgánica
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Rosario S2002LRK
| | - R. L. E. Furlan
- Farmacognosia
- Departamento de Química Orgánica
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Rosario S2002LRK
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Oshima Y, Kikuchi H. Developments toward the Production of Diverse Natural-Product-Like Compounds: Diversity-Oriented Synthesis and Diversity-Enhanced Extracts. HETEROCYCLES 2018. [DOI: 10.3987/rev-18-885] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Li G, Lou HX. Strategies to diversify natural products for drug discovery. Med Res Rev 2017; 38:1255-1294. [PMID: 29064108 DOI: 10.1002/med.21474] [Citation(s) in RCA: 162] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/18/2017] [Accepted: 09/28/2017] [Indexed: 12/11/2022]
Abstract
Natural product libraries contain specialized metabolites derived from plants, animals, and microorganisms that play a pivotal role in drug discovery due to their immense structural diversity and wide variety of biological activities. The strategies to greatly extend natural product scaffolds through available biological and chemical approaches offer unique opportunities to access a new series of natural product analogues, enabling the construction of diverse natural product-like libraries. The affordability of these structurally diverse molecules has been a crucial step in accelerating drug discovery. This review provides an overview of various approaches to exploit the diversity of compounds for natural product-based drug development, drawing upon a series of examples to illustrate each strategy.
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Affiliation(s)
- Gang Li
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China
| | - Hong-Xiang Lou
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China.,Department of Natural Products Chemistry, Key Lab of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan, China
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Tomohara K, Ito T, Furusawa K, Hasegawa N, Tsuge K, Kato A, Adachi I. Multiple production of α,α-disubstituted amino acid derivatives through direct chemical derivatization of natural plant extracts: An apparently difficult but successful route. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.06.087] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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16
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Tomohara K, Ito T, Hasegawa N, Kato A, Adachi I. Direct chemical derivatization of natural plant extract: straightforward synthesis of natural plant-like hydantoin. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.01.054] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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17
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García P, Ramallo IA, Salazar MO, Furlan RLE. Chemical diversification of essential oils, evaluation of complex mixtures and identification of a xanthine oxidase inhibitor. RSC Adv 2016. [DOI: 10.1039/c6ra05373d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
A set of chemically engineered essential oils has been generated through chemical diversification by reaction with bromine, leading to the discovery of a new brominated xanthine oxidase inhibitor.
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Affiliation(s)
- P. García
- Instituto de Investigaciones para el Descubrimiento de Fármacos de Rosario (IIDEFAR, CONICET-UNR)
- Ocampo y Esmeralda
- Rosario
- Argentina
| | - I. A. Ramallo
- Instituto de Investigaciones para el Descubrimiento de Fármacos de Rosario (IIDEFAR, CONICET-UNR)
- Ocampo y Esmeralda
- Rosario
- Argentina
| | - M. O. Salazar
- Farmacognosia
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Rosario
- Argentina
| | - R. L. E. Furlan
- Farmacognosia
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Rosario
- Argentina
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18
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Wu T, Jiang C, Wang L, Morris-Natschke SL, Miao H, Gu L, Xu J, Lee KH, Gu Q. 3,5-Diarylpyrazole Derivatives Obtained by Ammonolysis of the Total Flavonoids from Chrysanthemum indicum Extract Show Potential for the Treatment of Alzheimer's Disease. JOURNAL OF NATURAL PRODUCTS 2015; 78:1593-1599. [PMID: 26099993 DOI: 10.1021/acs.jnatprod.5b00156] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Four new 3,5-diarylpyrazole analogues (1-4) were isolated from an extract of the flowers of Chrysanthemun indicum using a combination of ammonolysis of the total flavonoid extract and an Aβ aggregation inhibitory activity guided purification procedure. All four compounds (1-4) showed moderate to potent activity against Aβ aggregation with EC50 values of 4.3, 15.8, 1.3, and 2.9 μM, respectively. Moreover, compound 3 showed low cytotoxicity and significant neuroprotective activity against Aβ-induced cytotoxicity in the SH-SY5Y cell line. This report is the first to show that 3,5-diarylpyrazole analogues can inhibit Aβ aggregation and exhibit neuroprotective activity with potential for the treatment of Alzheimer's disease. Taken together, the method presented here offers an alternative approach to yield bioactive compounds.
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Affiliation(s)
- Taizong Wu
- †Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Cheng Jiang
- †Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Ling Wang
- †Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Susan L Morris-Natschke
- ‡Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Hui Miao
- †Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Lianquan Gu
- †Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Jun Xu
- †Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Kuo-Hsiung Lee
- ‡Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
- §Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung 401, Taiwan, ROC
| | - Qiong Gu
- †Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
- ‡Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
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Kikuchi H, Sakurai K, Oshima Y. Development of diversity-enhanced extracts of Curcuma zedoaria and their new sesquiterpene-like compounds. Org Lett 2014; 16:1916-9. [PMID: 24646363 DOI: 10.1021/ol5004324] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Through the combination of natural products chemistry and diversity-oriented synthesis, a new approach, diversity-enhanced extracts, for increasing the diversity of natural product-like compounds is proposed. They are prepared from chemical reactions that remodel molecular scaffolds directly on extracts of natural resources. This method was applied to terpenes extracted from Curcuma zedoaria. Epoxidation and subsequent ring-opening reactions of epoxides were used to modify molecular skeletons. As a result, seven sesquiterpene-like compounds with some containing new molecular skeletons were obtained.
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Affiliation(s)
- Haruhisa Kikuchi
- Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba-yama, Aoba-ku, Sendai 980-8578, Japan
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Salazar MO, Micheloni O, Escalante AM, Furlan RLE. Discovery of a β-glucosidase inhibitor from a chemically engineered extract prepared through sulfonylation. Mol Divers 2011; 15:713-9. [PMID: 21207143 DOI: 10.1007/s11030-010-9301-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Accepted: 12/16/2010] [Indexed: 11/26/2022]
Abstract
A semisynthetic β-glucosidase inhibitor was identified from a chemically engineered extract prepared by reaction with benzenesulfonyl chloride. The structure includes a natural histamine portion and a benzenesulfonyl portion introduced during the diversification step.
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Affiliation(s)
- Mario O Salazar
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, 2000 Rosario, Argentina
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