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Silalai P, Saeeng R. Visible-light-induced photocatalytic four-component fluoroalkylation-dithiocarbamylation via difunctionalization of styrenes. Org Biomol Chem 2024. [PMID: 39140347 DOI: 10.1039/d4ob00699b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Herein we demonstrate that a visible-light-induced photocatalytic four-component fluoroalkylation-dithiocarbamylation is a unified method for the fluoroalkylation of diverse activated fluoroalkyl halides, including monofluoroalkyl bromides, difluoroalkyl bromides, trifluoromethyl iodide, and perfluoroalkyl iodides. The synthetic value of this method has been demonstrated by the transformations of various substrates containing drug/natural product skeletons, gram scale reactions, and further derivatizations of the fluorodithiocarbamate products. This work features an atom economical protocol that is simple to operate, does not require any additives or strong bases, and can be carried out under mild conditions.
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Affiliation(s)
- Patamawadee Silalai
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand.
| | - Rungnapha Saeeng
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand.
- The Research Unit in Synthetic Compounds and Synthetic Analogues from Natural Product for Drug Discovery (RSND), Burapha University, Chonburi 20131, Thailand
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Duangiad P, Nutho B, Chaijarasphong T, Morales NP, Pongtharangkul T, Hamachi I, Ojida A, Wongkongkatep J. Naturally occurring quercetin and myricetin as potent inhibitors for human ectonucleotide pyrophosphatase/phosphodiesterase 1. Sci Rep 2024; 14:125. [PMID: 38167594 PMCID: PMC10761680 DOI: 10.1038/s41598-023-50590-7] [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: 06/27/2023] [Accepted: 12/21/2023] [Indexed: 01/05/2024] Open
Abstract
Ecto-nucleotide pyrophosphatases/phosphodiesterases 1 (ENPP1) is a key enzyme in purinergic signaling pathways responsible for cell-to-cell communications and regulation of several fundamental pathophysiological processes. In this study, Kyoto Green, a rapid chemical sensor of pyrophosphate, was employed to screen for effective ENPP1 inhibitors among five representative flavonoids (quercetin, myricetin, morin, kaempferol, and quercetin-3-glucoside), five nucleosides (adenosine, guanosine, inosine, uridine, and cytidine), and five deoxynucleosides (2'- and 3'-deoxyadenosine, 2'-deoxyguanosine, 2'-deoxyinosine, and 2'-deoxyuridine). Conventional colorimetric, fluorescence, and bioluminescence assays revealed that ENPP1 was effectively inhibited by quercetin (Ki ~ 4 nM) and myricetin (Ki ~ 32 nM) when ATP was used as a substrate at pH 7.4. In silico analysis indicated that the presence of a chromone scaffold, particularly one containing a hydroxyl group at the 3' position on the B ring, may promote binding to the active site pocket of ENPP1 and enhance inhibition. This study demonstrated that the naturally derived quercetin and myricetin could effectively inhibit ENPP1 enzymatic activity and may offer health benefits in arthritis management.
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Affiliation(s)
- Peeradon Duangiad
- Department of Biotechnology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, 10400, Thailand
| | - Bodee Nutho
- Department of Pharmacology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, 10400, Thailand
| | - Thawatchai Chaijarasphong
- Department of Biotechnology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, 10400, Thailand
| | - Noppawan Phumala Morales
- Department of Pharmacology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, 10400, Thailand
| | - Thunyarat Pongtharangkul
- Department of Biotechnology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, 10400, Thailand
| | - Itaru Hamachi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-Ku, Kyoto, 615-8510, Japan
| | - Akio Ojida
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-Ku, Fukuoka, 812-8582, Japan
| | - Jirarut Wongkongkatep
- Department of Biotechnology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, 10400, Thailand.
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Nutho B, Tungmunnithum D. Exploring Major Flavonoid Phytochemicals from Nelumbo nucifera Gaertn. as Potential Skin Anti-Aging Agents: In Silico and In Vitro Evaluations. Int J Mol Sci 2023; 24:16571. [PMID: 38068894 PMCID: PMC10706394 DOI: 10.3390/ijms242316571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 11/16/2023] [Accepted: 11/17/2023] [Indexed: 12/18/2023] Open
Abstract
Nelumbo nucifera Gaertn., an aquatic medicinal plant (Nelumbonaceae family), has a history of use in traditional medicine across various regions. Our previous study demonstrated the skin anti-aging potential of its stamen ethanolic extract by effectively inhibiting collagenase and tyrosinase enzymes. While the major constituents of this extract are well documented, there is a lack of research on the individual compounds' abilities to inhibit skin aging enzymes. Therefore, this study aimed to evaluate the anti-aging potential of the primary flavonoids found in N. nucifera using both in silico and in vitro approaches. Our initial step involved molecular docking to identify compounds with the potential to inhibit collagenase, elastase, and tyrosinase. Among the seven flavonoids studied, kaempferol-3-O-robinobioside (Kae-3-Rob) emerged as the most promising candidate, exhibiting the highest docking scores for three skin aging-related enzymes. Subsequent enzyme-based inhibition assays confirmed that Kae-3-Rob displayed robust inhibitory activity against collagenase (58.24 ± 8.27%), elastase (26.29 ± 7.16%), and tyrosinase (69.84 ± 6.07%). Furthermore, we conducted extensive 200-ns molecular dynamics (MD) simulations, revealing the stability of the complexes formed between Kae-3-Rob and each enzyme along the MD simulation time. MM/PBSA-based binding free energy calculations indicated the considerably stronger binding affinity of Kae-3-Rob for collagenase and tyrosinase compared to elastase, which was related to the greater percentage of hydrogen bond occupations. These computational findings were consistent with the relatively high inhibitory activity of Kae-3-Rob against collagenase and tyrosinase observed in our in vitro experiment. In conclusion, the results obtained from this comprehensive study suggest that Kae-3-Rob, a key flavonoid from N. nucifera, holds significant potential as a source of bioactive compounds for anti-aging cosmeceutical and other phytopharmaceutical application.
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Affiliation(s)
- Bodee Nutho
- Department of Pharmacology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand;
| | - Duangjai Tungmunnithum
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand
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Nguyen DV, Hengphasatporn K, Danova A, Suroengrit A, Boonyasuppayakorn S, Fujiki R, Shigeta Y, Rungrotmongkol T, Chavasiri W. Structure-yeast α-glucosidase inhibitory activity relationship of 9-O-berberrubine carboxylates. Sci Rep 2023; 13:18865. [PMID: 37914757 PMCID: PMC10620162 DOI: 10.1038/s41598-023-45116-0] [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: 06/24/2023] [Accepted: 10/16/2023] [Indexed: 11/03/2023] Open
Abstract
Thirty-five 9-O-berberrubine carboxylate derivatives were synthesized and evaluated for yeast α-glucosidase inhibitory activity. All compounds demonstrated better inhibitory activities than the parent compounds berberine (BBR) and berberrubine (BBRB), and a positive control, acarbose. The structure-activity correlation study indicated that most of the substituents on the benzoate moiety such as methoxy, hydroxy, methylenedioxy, benzyloxy, halogen, trifluoromethyl, nitro and alkyl can contribute to the activities except multi-methoxy, fluoro and cyano. In addition, replacing benzoate with naphthoate, cinnamate, piperate or diphenylacetate also led to an increase in inhibitory activities except with phenyl acetate. 9, 26, 27, 28 and 33 exhibited the most potent α-glucosidase inhibitory activities with the IC50 values in the range of 1.61-2.67 μM. Kinetic study revealed that 9, 26, 28 and 33 interacted with the enzyme via competitive mode. These four compounds were also proved to be not cytotoxic at their IC50 values. The competitive inhibition mechanism of these four compounds against yeast α-glucosidase was investigated using molecular docking and molecular dynamics simulations. The binding free energy calculations suggest that 26 exhibited the strongest binding affinity, and its binding stability is supported by hydrophobic interactions with D68, F157, F158 and F177. Therefore, 9, 26, 28 and 33 would be promising candidates for further studies of antidiabetic activity.
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Affiliation(s)
- Duy Vu Nguyen
- Department of Chemistry, Faculty of Science, Center of Excellence in Natural Products Chemistry, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Kowit Hengphasatporn
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Ade Danova
- Department of Chemistry, Faculty of Science, Center of Excellence in Natural Products Chemistry, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
- Organic Chemistry Division, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung, West Java, 40132, Indonesia
| | - Aphinya Suroengrit
- Department of Microbiology, Faculty of Medicine, Center of Excellence in Applied Medical Virology, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Siwaporn Boonyasuppayakorn
- Department of Microbiology, Faculty of Medicine, Center of Excellence in Applied Medical Virology, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Ryo Fujiki
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Yasuteru Shigeta
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Thanyada Rungrotmongkol
- Bioinformatics and Computational Biology Program, Graduated School, Chulalongkorn University, Bangkok, 10330, Thailand
- Department of Biochemistry, Faculty of Science, Center of Excellence in Biocatalyst and Sustainable Biotechnology, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Warinthorn Chavasiri
- Department of Chemistry, Faculty of Science, Center of Excellence in Natural Products Chemistry, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
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Campanale C, Triozzi M, Ragonese A, Losacco D, Massarelli C. Dithiocarbamates: Properties, Methodological Approaches and Challenges to Their Control. TOXICS 2023; 11:851. [PMID: 37888701 PMCID: PMC10610574 DOI: 10.3390/toxics11100851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/28/2023]
Abstract
Dithiocarbamates (DTCs) are a group of chemicals used primarily as fungicides, although they are exploited for various other applications. DTCs represent one of the oldest classes of broad-spectrum fungicides employed worldwide to control fungal diseases on many crops. Due to their ease of synthesis, low production costs (cheap and readily available starting materials) and a fungicidal activity with a multi-site mode of action, they are still among modern agriculture's most extensively used pesticides. Although the environmental degradation in air, water, and soil is relatively rapid due to photolysis and/or hydrolysis, they are among the most frequently detected pesticides in the European Union (EU), also with a high frequency of maximum residue level (MRL) exceedances. The current review aims to comprehensively survey all aspects of DTCs, including the environmental fate, toxicity and analytical methods for determining parental compounds and degradation products in environmental and food samples. Furthermore, the accumulation of carbamate and dithiocarbamate pesticides in vegetables, fruits, bioindicator organisms and human biological samples, as well as their health effects on humans, are also considered in this study.
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Affiliation(s)
- Claudia Campanale
- CNR-IRSA, National Research Council of Italy, Water Research Institute, V.le F. De Blasio 5, 70132 Bari, Italy
| | - Mariangela Triozzi
- CNR-IRSA, National Research Council of Italy, Water Research Institute, V.le F. De Blasio 5, 70132 Bari, Italy
| | - Annamaria Ragonese
- CNR-IRSA, National Research Council of Italy, Water Research Institute, V.le F. De Blasio 5, 70132 Bari, Italy
| | - Daniela Losacco
- CNR-IRSA, National Research Council of Italy, Water Research Institute, V.le F. De Blasio 5, 70132 Bari, Italy
| | - Carmine Massarelli
- CNR-IRSA, National Research Council of Italy, Water Research Institute, V.le F. De Blasio 5, 70132 Bari, Italy
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