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Limtragool OA, Pitchuanchom S, Boonyarat C, Kanokmedhakul K, Kanokmedhakul S. Bioactive cholinesterase inhibitions of clerodanes from the flowers of Croton krabas and molecular docking studies. Nat Prod Res 2024:1-10. [PMID: 38501726 DOI: 10.1080/14786419.2024.2330513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 03/01/2024] [Indexed: 03/20/2024]
Abstract
The first investigation of the phytochemical profile of the flowers of Croton krabas led to the isolation of two new clerodane diterpenes, 6S-crotocaudin (1) and crotocaudin B (2), together with two known clerodanes, 6S-crotoeurin C (3) and isoteucvin (4). The structures and absolute configurations of isolated clerodanes were elucidated by extensive analysis of NMR spectroscopic data, mass spectrometry and ECD calculations. Compounds 1-4 demonstrated significant inhibitory activity towards acetylcholinesterase (AChE). Notably, compound 2 exhibited the strongest AChE inhibition (IC50 1.01 µM). Compounds 3 and 4 showed potent butyrylcholinesterase (BChE) inhibitory activity with IC50 values of 1.09 and 1.12 µM, respectively. The molecular docking results revealed that 2 bound to the catalytic anionic site (CAS) and peripheral anionic site (PAS) of AChE, while 3 occupied in the CAS of BChE.
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Affiliation(s)
- Oue-Artorn Limtragool
- Department of Chemistry, Multidisciplinary Research Unit of Pure and Applied Chemistry, Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham, Thailand
| | - Siripit Pitchuanchom
- Department of Chemistry, Multidisciplinary Research Unit of Pure and Applied Chemistry, Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham, Thailand
| | - Chantana Boonyarat
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Kwanjai Kanokmedhakul
- Department of Chemistry, Natural Products Research Unit, Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Somdej Kanokmedhakul
- Department of Chemistry, Natural Products Research Unit, Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
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Tatsinda Tsapi VB, Fotsing Fongang YS, Awantu AF, Kezetas Bankeu JJ, Lateef M, Chouna JR, Nkeng-Efouet-Alango P, Ali MS, Lenta BN. Crotofoligandrin, a new endoperoxide crotofolane-type diterpenoid from the twigs of Croton oligandrus Pierre ex. Hutch (Euphorbiaceae). Z NATURFORSCH C 2023; 78:275-283. [PMID: 36803991 DOI: 10.1515/znc-2022-0204] [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: 10/13/2022] [Accepted: 01/26/2023] [Indexed: 02/23/2023]
Abstract
Crotofoligandrin (1), a new endoperoxide crotofolane-type diterpenoid was isolated from the dichloromethane/methanol (1:1) extract of the twigs of Croton oligandrus Pierre Ex Hutch along with thirteen known secondary metabolites including 1-nonacosanol (2), lupenone (3), friedelin (4), β-sitosterol (5), taraxerol (6), (-)-hardwickiic acid (7), apigenin (8), acetyl aleuritolic acid (9), betulinic acid (10), fokihodgin C 3-acetate (11), D-mannitol (12), scopoletin (13) and quercetin (14). The structures of the isolated compounds were determined based on their spectroscopic data. The crude extract and the isolated compounds were assessed in vitro for their antioxidant, lipoxygenase, butyrylcholinesterase (BChE), urease and glucosidase inhibitory potentials. Compounds 1-3, and 10 displayed activities on all the performed bioassays. All the tested samples showed strong to significant antioxidant activity with compound 1 being the most potent (IC50 39.4 μM).
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Affiliation(s)
| | | | - Angelbert Fusi Awantu
- Department of Chemistry, Faculty of Science, The University of Bamenda, Bambili, Bamenda, Cameroon
| | | | - Mehreen Lateef
- Multi-Disciplinary Research Lab, Bahria University, Medical and Dental College, Karachi, Pakistan
| | - Jean Rodolphe Chouna
- Department of Chemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | | | - Muhammad Shaiq Ali
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270, Karachi, Pakistan
| | - Bruno Ndjakou Lenta
- Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, P.O. Box 47 Yaoundé, Cameroon
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Tamfu AN, Kucukaydin S, Yeskaliyeva B, Ozturk M, Dinica RM. Non-Alkaloid Cholinesterase Inhibitory Compounds from Natural Sources. Molecules 2021; 26:5582. [PMID: 34577053 PMCID: PMC8472022 DOI: 10.3390/molecules26185582] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 01/12/2023] Open
Abstract
Alzheimer's disease (AD) is a severe neurodegenerative disorder of different brain regions accompanied by distresses and affecting more than 25 million people in the world. This progressive brain deterioration affects the central nervous system and has negative impacts on a patient's daily activities such as memory impairment. The most important challenge concerning AD is the development of new drugs for long-term treatment or prevention, with lesser side effects and greater efficiency as cholinesterases inhibitors and the ability to remove amyloid-beta(Aβ) deposits and other related AD neuropathologies. Natural sources provide promising alternatives to synthetic cholinesterase inhibitors and many have been reported for alkaloids while neglecting other classes with potential cholinesterase inhibition. This review summarizes information about the therapeutic potential of small natural molecules from medicinal herbs, belonging to terpenoids, coumarins, and phenolic compounds, and others, which have gained special attention due to their specific modes of action and their advantages of low toxicity and high efficiency in the treatment of AD. Some show superior drug-like features in comparison to synthetic cholinesterase inhibitors. We expect that the listed phytoconstituents in this review will serve as promising tools and chemical scaffolds for the discovery of new potent therapeutic leads for the amelioration and treatment of Alzheimer's disease.
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Affiliation(s)
- Alfred Ngenge Tamfu
- School of Chemical Engineering and Mineral Industries, University of Ngaoundere, 454 Ngaoundere, Cameroon
- Department of Chemistry, Mugla Sitki Kocman University, Mugla 48000, Turkey; (B.Y.); (M.O.)
| | - Selcuk Kucukaydin
- Department of Medical Services and Techniques, Koycegiz Vocational School of Health Services, Mugla Sitki Kocman University, Mugla 48800, Turkey;
| | - Balakyz Yeskaliyeva
- Department of Chemistry, Mugla Sitki Kocman University, Mugla 48000, Turkey; (B.Y.); (M.O.)
- Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
| | - Mehmet Ozturk
- Department of Chemistry, Mugla Sitki Kocman University, Mugla 48000, Turkey; (B.Y.); (M.O.)
| | - Rodica Mihaela Dinica
- Department of Chemistry, Physics and Environment, Faculty of Sciences and Environment, Dunarea de Jos University, 47 Domneasca Str., 800008 Galati, Romania
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Martínez-Treviño SH, Uc-Cetina V, Fernández-Herrera MA, Merino G. Prediction of Natural Product Classes Using Machine Learning and 13C NMR Spectroscopic Data. J Chem Inf Model 2020; 60:3376-3386. [DOI: 10.1021/acs.jcim.0c00293] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Saúl H. Martínez-Treviño
- Departamento de Fı́sica Aplicada, Centro de Investigación y de Estudios Avanzados, Km. 6 Antigua carretera a Progreso Apdo. Postal 73, Cordemex, 97310 Mérida, Mexico
| | - Víctor Uc-Cetina
- Facultad de Matemáticas, Universidad Autónoma de Yucatán, Av. Industrias no contaminantes, S/N, 97119 Mérida, Yucatán, Mexico
| | - María A. Fernández-Herrera
- Departamento de Fı́sica Aplicada, Centro de Investigación y de Estudios Avanzados, Km. 6 Antigua carretera a Progreso Apdo. Postal 73, Cordemex, 97310 Mérida, Mexico
| | - Gabriel Merino
- Departamento de Fı́sica Aplicada, Centro de Investigación y de Estudios Avanzados, Km. 6 Antigua carretera a Progreso Apdo. Postal 73, Cordemex, 97310 Mérida, Mexico
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Chang FP, Huang SS, Lee TH, Chang CI, Kuo TF, Huang GJ, Kuo YH. Four New Iridoid Metabolites Have Been Isolated from the Stems of Neonauclea reticulata (Havil.) Merr. with Anti-Inflammatory Activities on LPS-Induced RAW264.7 Cells. Molecules 2019; 24:E4271. [PMID: 31771186 PMCID: PMC6930649 DOI: 10.3390/molecules24234271] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 11/17/2019] [Accepted: 11/21/2019] [Indexed: 01/08/2023] Open
Abstract
One new iridoid, namely neonanin C (1) one monocyclic iridoid ring-opened derivative namely neonanin D (2), two new bis-iridoid derivatives namely reticunin A (3) and reticunin B (4) with sixteen known compounds (5-20) were isolated from the stems of Neonauclea reticulata (Havil.) Merr. These new structures were determined by the detailed analysis of spectroscopic data and comparison with the data of known analogues. Compounds 1-20 were evaluated for inhibition of nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages cell line. The results showed that all compounds exhibited no obvious cytotoxicity compared to the control group and five compounds including isoboonein (7), syringaresinol (10), (+)-medioresinol (12), protocatechuic acid (14) and trans-caffeic acid (15) exhibited inhibitory activities with IC50 values at 86.27 ± 3.45; 9.18 ± 1.90; 76.18 ± 2.42; 72.91 ± 4.97 and 95.16 ± 1.20 µg/mL, respectively.
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Affiliation(s)
- Fang-Pin Chang
- The Ph.D Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung 404, Taiwan;
| | - Shyh-Shyun Huang
- School of Pharmacy, China Medical University, Taichung 404, Taiwan;
| | - Tzong-Huei Lee
- Institute of Fisheries Science, National Taiwan University, Taipei 106, Taiwan;
| | - Chi-I Chang
- Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung 912, Taiwan;
| | - Tzong-Fu Kuo
- Department of Post-Baccalaureate Veterinary Medicine, Asia University, Taichung 413, Taiwan;
| | - Guan-Jhong Huang
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung 404, Taiwan
| | - Yueh-Hsiung Kuo
- The Ph.D Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung 404, Taiwan;
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung 404, Taiwan
- Department of Biotechnology, Asia University, Taichung 413, Taiwan
- Chinese Medicine Research Center, China Medical University, Taichung 404, Taiwan
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