1
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Barron D, Ratinaud Y, Rambousek S, Brinon B, Naranjo Pinta M, Sanders MJ, Sakamoto K, Ciclet O. Unambiguous Characterization of Commercial Natural (Dihydro)phenanthrene Compounds Is Vital in the Discovery of AMPK Activators. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:14993-15004. [PMID: 38896806 DOI: 10.1021/acs.jafc.4c01616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
These days, easy access to commercially available (poly)phenolic compounds has expanded the scope of potential research beyond the field of chemistry, particularly in the area of their bioactivity. However, the quality of these compounds is often overlooked or not even considered. This issue is illustrated in this study through the example of (dihydro)phenanthrenes, a group of natural products present in yams, as AMP-activated protein kinase (AMPK) activators. A study conducted in our group on a series of compounds, fully characterized using a combination of chemical synthesis, NMR and MS techniques, provided evidence that the conclusions of a previous study were erroneous, likely due to the use of a misidentified commercial compound by its supplier. Furthermore, we demonstrated that additional representatives of the (dihydro)phenanthrene phytochemical classes were able to directly activate AMPK, avoiding the risk of misinterpretation of results based on analysis of a single compound alone.
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Affiliation(s)
- Denis Barron
- Nestlé Research, Société des Produits Nestlé S.A., 1015 Lausanne, Switzerland
| | - Yann Ratinaud
- Nestlé Research, Société des Produits Nestlé S.A., 1015 Lausanne, Switzerland
| | - Simona Rambousek
- Nestlé Research, Société des Produits Nestlé S.A., 1015 Lausanne, Switzerland
| | - Benjamin Brinon
- Nestlé Research, Société des Produits Nestlé S.A., 1015 Lausanne, Switzerland
| | | | - Matthew J Sanders
- Nestlé Research, Société des Produits Nestlé S.A., 1015 Lausanne, Switzerland
| | - Kei Sakamoto
- Nestlé Research, Société des Produits Nestlé S.A., 1015 Lausanne, Switzerland
| | - Olivier Ciclet
- Nestlé Research, Société des Produits Nestlé S.A., 1015 Lausanne, Switzerland
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2
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Chen YC, Pan WX, Wang YH, Tsai CM, Hwang TL, Lam SH. Dihydrophenanthropyrans derived from the pseudobulbs of Pholidota chinensis alleviates neutrophilic inflammation by inhibiting MAPKs and calcium. Fitoterapia 2024; 176:106015. [PMID: 38762075 DOI: 10.1016/j.fitote.2024.106015] [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: 11/19/2023] [Revised: 05/05/2024] [Accepted: 05/11/2024] [Indexed: 05/20/2024]
Abstract
Five dihydrophenanthropyrans (1-5) were isolated from the pseudobulbs of Pholidota chinensis, among which 1,3-di(4'-hydroxybenzy)-imbricatin (3) was isolated from the nature for the first time. Their structures were elucidated and established through various spectroscopic methods. These compounds exhibited a potent inhibition effect on both N-formyl-methionyl-leucyl-phenylalanine (fMLF)-induced superoxide anion generation and elastase release with IC50 values ranging from 0.23 to 7.63 μM. Furthermore, dihydrophenanthropyrans (1-3) also demonstrated a dose-dependent reactive oxygen species (ROS) scavenging effect. In addition, dihydrophenanthropyrans (2-3) exhibited a dose-dependent reduction in the intracellular Ca2+ concentration ([Ca2+]i) in fMLF-activated human neutrophils. Moreover, dihydrophenanthropyrans (1-3) selectively inhibited the phosphorylation of c-Jun N-terminal kinases (JNKs) and p38, while only dihydrophenanthropyran (1) inhibited the phosphorylation of extracellular signal-regulated kinases (ERKs) in fMLF-activated human neutrophils. Notably, dihydrophenanthropyrans (1-3) did not affect protein kinase B (AKT) activity in these cells. These findings highlight the potent anti-inflammatory capabilities of dihydrophenanthropyrans, manifested through their ability to inhibit superoxide anion generation, suppress elastase release, and selectively modulate key signaling pathways in human neutrophils. This suggests that dihydrophenanthropyrans hold significant promise as therapeutic agents for conditions associated with neutrophil-mediated inflammation.
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Affiliation(s)
- Yu-Cheng Chen
- Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan; Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan
| | - Wen-Xuan Pan
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan
| | - Yi-Hsuan Wang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Cheng-Ming Tsai
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan
| | - Tsong-Long Hwang
- Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan; Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan; Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 33302, Taiwan
| | - Sio-Hong Lam
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan.
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3
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Wang X, Zhong J, Luo M, Zeng X. Cr-Catalyzed Intramolecular Arylative Cross-Coupling of Unactivated C-H Bonds with C-Halide Bonds. Org Lett 2024; 26:4093-4097. [PMID: 38717255 DOI: 10.1021/acs.orglett.4c01145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
We report here a chromium-catalyzed intramolecular arylation of unactivated C-H bonds with C-halide bonds under mild conditions. This reaction was enabled by using a low-cost CrCl2 salt as the precatalyst in combination with allylmagnesium bromide and E/Z-mixed 1-halo-2-styrylarenes as substates, providing a strategy for the construction of functionalized phenanthrene compounds without using external ligands.
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Affiliation(s)
- Xuelan Wang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Jiaoyue Zhong
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Meiming Luo
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
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4
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Yang C, Jiang H, Mao H, Zhang Y, Cao Y, Zhang Y, Yu H, Lv M, Xu H, Dong X, Tao L. Structurally diverse deformed phenanthrenes from Strophioblachia fimbricalyx with cytotoxic activities by inducing cell apoptosis. PHYTOCHEMISTRY 2024; 221:114035. [PMID: 38401672 DOI: 10.1016/j.phytochem.2024.114035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/14/2024] [Accepted: 02/17/2024] [Indexed: 02/26/2024]
Abstract
A group of phenanthrene derivatives with different deformed types, including four previously undescribed derivatives (1-4), an undescribed natural product (5) and five known compounds (6-10), were isolated from the leaves and stems of Strophioblachia fimbricalyx by molecular networking based on UPLC-MS/MS method. Their structures were established by 1D/2D NMR spectroscopy, HRESIMS, quantum chemistry calculation, and single crystal X-ray diffraction. In biogenic pathways, series of deformed phenanthrenes were all suspected to be derived from 6/6/6 tricyclic phenanthrenes with a gem-dimethyl unit in one ring as characteristic components of Strophioblachia. Fimbricalyxone (1) and trigoxyphin M (6) with a 6/6/5 tricyclic carbon skeleton were reported for the first time from the genus and fimbricalyxanhydride C (2) is the first example of anhydride type bearing a rare 8,9-oxycycle. All the isolates were evaluated for their cytotoxic activity against three tumor cell lines, and compounds 8 and 10 exhibited significant activity with IC50 values of 4.65-9.02 μM, and the structure-activity relationship of the deformed phenanthrenes was discussed. In addition, the X-ray structure of 8 and 10 and the antineoplastic activity of 10 are reported herein for the first time. Trigohowilol G (10) inhibiting the proliferation of A549 cells might be related to cell cycle distribution and the induction of S phase arrest, and it induced cell apoptosis through Bad/Bax/Cleaved PARP1 pathway.
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Affiliation(s)
- Changshui Yang
- Department of Pharmacy, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225009, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, 225009, China; The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou, 225009, China.
| | - Houli Jiang
- Department of Pharmacy, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225009, China
| | - Haoyu Mao
- Department of Pharmacy, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225009, China
| | - Yue Zhang
- Department of Pharmacy, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225009, China
| | - Yinxue Cao
- Department of Pharmacy, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225009, China
| | - Yanyan Zhang
- Testing Center, Yangzhou University, Yangzhou, 225009, China
| | - Hongyan Yu
- Department of Pharmacy, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225009, China
| | - Mengying Lv
- Department of Pharmacy, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225009, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, 225009, China
| | - Hairong Xu
- Department of Pharmacy, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225009, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, 225009, China
| | - Xiaoyun Dong
- Department of Pharmacy, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225009, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, 225009, China
| | - Li Tao
- Department of Pharmacy, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225009, China; The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou, 225009, China.
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5
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Xu Y, Huang X, Wang YC, Zhao Y, Liang W. Identification of the interchromophore interaction in the electronic absorption and circular dichroism spectra of bis-phenanthrenes. Phys Chem Chem Phys 2024; 26:6155-6163. [PMID: 38299862 DOI: 10.1039/d3cp05684h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
We characterize the low-lying excited electronic states of a series of bis-phenanthrenes using our newly developed diabatic scheme called the fragment particle-hole density (FPHD) method and calculate both the electronic absorption and circular dichroism (ECD) spectra using the time-dependent density functional theory (TDDFT) and the FPHD-based exciton model which couples intrachromophore local excitations (LEs) and the interchromophore charge-transfer excitations (CTEs). TDDFT treats each bis-phenanthrene as a single molecule while the mixed LE-CTE exciton model partitions the molecule into two phenanthrene-based aromatic moieties, and then applies the electronic coupling between the various quasi-diabatic states to cover the interactions. It is found that TDDFT and the mixed LE-CTE model reproduce all experimentally observed trends in the spectral profiles, and the hybridization between LE and CTE states is displayed differently in absorption and ECD spectral intensities, as it usually decreases the absorption maxima and affects the positive/negative extrema of the ECD irregularly. By comparing the results yielded by the LE-CTE model with and without the LE-CTE coupling, we identify the contribution of CTE on the main dipole-allowed transitions.
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Affiliation(s)
- Yuchuan Xu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
| | - Xunkun Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
| | - Yu-Chen Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
| | - Yi Zhao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
| | - WanZhen Liang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
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6
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Yao L, Huang X, Lin T, Qiu SX. Three new anti-inflammatory stilbenoids and a diphenyl ether derivative from Cajanus cajan. Nat Prod Res 2024:1-8. [PMID: 38164765 DOI: 10.1080/14786419.2023.2297862] [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: 10/17/2023] [Accepted: 12/13/2023] [Indexed: 01/03/2024]
Abstract
Three new stilbenoids, namely two rare plant-derived phenanthrenes denominated Cajananthrenes A and B (1, 2) and one bibenzyl named Cajanbenzyl (3), together with a diphenyl ether derivative designated Cajanether (4), as well as five other known compounds (5-9) were isolated from the ethanolic extract of the leaves of Cajanus cajan. Their structures were determined through extensive spectroscopic analysis including UV, IR, NMR (1D and 2D) and HRESIMS as well. A plausible biogenesis pathway was proposed for the biosynthesis of compounds 1-3. Compounds 1 and 2 displayed moderate anti-inflammatory activity as evident from the inhibitory effect on NO production in LPS-stimulated RAW 264.7 macrophages with IC50 values of 73.6 and 44.6 μM respectively.
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Affiliation(s)
- Liyuan Yao
- State Key Laboratory of Plant Diversity and Specialty Crops & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- South China National Botanical Garden, Guangzhou, P. R. China
- University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Xiaobao Huang
- State Key Laboratory of Plant Diversity and Specialty Crops & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- Chemistry Department, University of Wisconsin Madison, Madison, Wisconsin, USA
| | - Tingting Lin
- State Key Laboratory of Plant Diversity and Specialty Crops & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Sheng-Xiang Qiu
- State Key Laboratory of Plant Diversity and Specialty Crops & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- South China National Botanical Garden, Guangzhou, P. R. China
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7
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Hayashi D, Tsuda T, Shintani R. Palladium-Catalyzed Skeletal Rearrangement of Substituted 2-Silylaryl Triflates via 1,5-C-Pd/C-Si Bond Exchange. Angew Chem Int Ed Engl 2023; 62:e202313171. [PMID: 37935641 DOI: 10.1002/anie.202313171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/05/2023] [Accepted: 11/07/2023] [Indexed: 11/09/2023]
Abstract
A palladium-catalyzed skeletal rearrangement of 2-(2-allylarylsilyl)aryl triflates has been developed to give highly fused tetrahydrophenanthrosilole derivatives via unprecedented 1,5-C-Pd/C-Si bond exchange. The reaction pathways can be switched toward 4-membered ring-forming C(sp2 )-H alkylation by tuning the reaction conditions to give completely different products, fused dihydrodibenzosilepin derivatives, from the same starting materials. The inspection of the reaction conditions revealed the importance of carboxylates in promoting the C-Pd/C-Si bond exchange.
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Affiliation(s)
- Daigo Hayashi
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Tomohiro Tsuda
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Ryo Shintani
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
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8
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Zhang Y, Wang J, Guo Y, Liu S, Shen X. Carbonyl Olefin Metathesis and Dehydrogenative Cyclization of Aromatic Ketones and gem-Difluoroalkenes. Angew Chem Int Ed Engl 2023:e202315269. [PMID: 38065839 DOI: 10.1002/anie.202315269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Indexed: 12/23/2023]
Abstract
The beauty of one-pot cascade reaction lies in the efficient disconnection and construction of several bonds in a single reaction flask, without the isolation of any intermediates. Herein, we report the first photoinduced thermally promoted cascade reactions of readily available aromatic ketones and aromatic gem-difluoroalkenes for the synthesis of phenanthrenes which possess potential utility in drug design and materials science. The reaction combines carbonyl-olefin metathesis (cascade photoinduced [2+2] cyclization and thermally controlled retro [2+2] cyclization) and dehydrogenative cyclization (cascade photoinduced conrotatory 6π electrocyclization and collidine-promoted dehydrogenative aromatization) together in one pot. The oxidant-free, acid-free and metal-free reaction shows broad substrate scope and wide functional group tolerance.
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Affiliation(s)
- Yunxiao Zhang
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei, 430072, China
- Shenzhen Research Institute of Wuhan University, Shenzhen, 518057, China
| | - Jiaxin Wang
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei, 430072, China
- Shenzhen Research Institute of Wuhan University, Shenzhen, 518057, China
| | - Youyuan Guo
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei, 430072, China
- Shenzhen Research Institute of Wuhan University, Shenzhen, 518057, China
| | - Shanshan Liu
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei, 430072, China
- Shenzhen Research Institute of Wuhan University, Shenzhen, 518057, China
| | - Xiao Shen
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, 299 Bayi Road, Wuhan, Hubei, 430072, China
- Shenzhen Research Institute of Wuhan University, Shenzhen, 518057, China
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9
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Dehghan M, Ghasemi M, Jafarpour F, Abbasi A. Base/Solvent Controlled Divergent Synthesis of Norbornane-Fused Dihydrophenanthrenes and Triphenylenes via Palladium Catalyst. Org Lett 2023; 25:7486-7490. [PMID: 37818874 DOI: 10.1021/acs.orglett.3c02577] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
A base/solvent controlled divergent synthesis for the construction of polycyclic hydrocarbons has been developed. In this process, norbornene through a reagent role leads to the synthesis of norbornane-fused dihydrophenanthrenes, which are essential due to their biological activities. Amazingly, by switching solvent and base, the role of norbornene becomes limited to a mediator/catalyst; therefore, it is removed from the final scaffold, and triphenylenes are regioselectively synthesized. Additionally, by removing norbornene from the reaction conditions, a different path leading to synthesis of unsymmetrically substituted triphenylenes with exceptional regioselectivity is established. This reaction includes a rare domino decarboxylation/C-H activation/annulation in a chemo- and regioselective manner.
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Affiliation(s)
- Maryam Dehghan
- School of Chemistry, College of Science, University of Tehran, 14155-6455 Tehran, Iran
| | - Mehran Ghasemi
- School of Chemistry, College of Science, University of Tehran, 14155-6455 Tehran, Iran
| | - Farnaz Jafarpour
- School of Chemistry, College of Science, University of Tehran, 14155-6455 Tehran, Iran
| | - Alireza Abbasi
- School of Chemistry, College of Science, University of Tehran, 14155-6455 Tehran, Iran
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10
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Kirkeby EK, Schwartz ZT, Lovasz MA, Roberts AG. Deaminative ring contraction for the synthesis of polycyclic heteroaromatics: a concise total synthesis of toddaquinoline. Chem Sci 2023; 14:10508-10514. [PMID: 37800000 PMCID: PMC10548534 DOI: 10.1039/d3sc03936f] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 09/07/2023] [Indexed: 10/07/2023] Open
Abstract
A concise strategy to prepare polycyclic heteroaromatics involving a deaminative contraction cascade is detailed. The efficient deaminative ring contraction involves the in situ methylation of a biaryl-linked dihydroazepine to form a cyclic ammonium cation that undergoes a base-induced [1,2]-Stevens rearrangement/dehydroamination sequence. The presence of pseudosymmetry guides the retrosynthetic analysis of pyridyl-containing polycyclic heteroaromatics, enabling their construction by the reductive cyclization and deaminative contraction of tertiary amine precursors.
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Affiliation(s)
- Emily K Kirkeby
- Department of Chemistry, University of Utah 315 South 1400 East Salt Lake City Utah 84112 USA
| | - Zachary T Schwartz
- Department of Chemistry, University of Utah 315 South 1400 East Salt Lake City Utah 84112 USA
| | - Myles A Lovasz
- Department of Chemistry, University of Utah 315 South 1400 East Salt Lake City Utah 84112 USA
| | - Andrew G Roberts
- Department of Chemistry, University of Utah 315 South 1400 East Salt Lake City Utah 84112 USA
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11
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Raji Reddy C, Fatima S, Kolgave DH, Sridhar B. Radical-mediated sulfonylative/thiolative cyclization of biaryl enones to phenanthrone derivatives. Org Biomol Chem 2023; 21:7327-7338. [PMID: 37646289 DOI: 10.1039/d3ob01068f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
An approach for the assembly of phenanthrone derivatives bearing all carbon quaternary centres has been developed through visible light-promoted tandem sulfonylation/intramolecular-arylation of biaryl enones with sulfonyl chlorides. A series of sulfonylated 10,10-dialkylphenanthrones were obtained in good yields. In addition, the approach has been extended to thiotrifluoromethyl (SCF3) and thiocyanato (SCN) radicals to obtain the corresponding phenanthrones under oxidative conditions. The synthetic utility was also illustrated by the scalability and further transformations of the product.
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Affiliation(s)
- Chada Raji Reddy
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Sana Fatima
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Dattahari H Kolgave
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Balasubramanian Sridhar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
- Centre for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
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12
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Pomini AM, Sahyun SA, Oliveira SMDE, Faria RTDE. Bioactive natural products from orchids native to the Americas - A review. AN ACAD BRAS CIENC 2023; 95:e20211488. [PMID: 37646708 DOI: 10.1590/0001-3765202320211488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 01/26/2023] [Indexed: 09/01/2023] Open
Abstract
The purpose of this review is to provide information on the traditional uses, phytochemical and pharmacological studies performed with species of orchids native to the Americas and the Caribbean Islands. The treatment of inflammation is the most traditional use for plants of this family, specially in Central America, while anti-inflammatory and anticancer assays are oftenly reported in pharmacological investigations. From the chemical point of view, they are sources of phenanthrenoids and stilbenes, rare secondary metabolites not commonly found in other families of plants, as well as cycloartane triterpenes, pyrrolizidine alkaloids and flavonoids. Since just few species were chemically and pharmacologically studied, in comparison to the large number of native species (less than 0.5% of the total), the orchids of the New World may be an interesting niche for the discovery of new, bioactive natural products.
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Affiliation(s)
- Armando Mateus Pomini
- State University of Maringá, Department of Chemistry, Colombo Avenue 5790, 87020-900 Maringá, PR, Brazil
| | - Sandra Aparecida Sahyun
- State University of Londrina, Department of Agronomy, Celso Garcia Road, Km 380, 86057-970 Londrina, PR, Brazil
| | - Silvana Maria DE Oliveira
- State University of Maringá, Department of Chemistry, Colombo Avenue 5790, 87020-900 Maringá, PR, Brazil
| | - Ricardo Tadeu DE Faria
- State University of Londrina, Department of Agronomy, Celso Garcia Road, Km 380, 86057-970 Londrina, PR, Brazil
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13
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Hao T, Gao W, Yuan S, Liu Y, Li Y, Fu Y, Ding Q. One-Pot Three-Component Synthesis of Phenanthrenes via Palladium-Catalyzed Catellani and Retro-Diels-Alder Reactions. J Org Chem 2023. [PMID: 37452758 DOI: 10.1021/acs.joc.2c02880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
An efficient one-pot three-component palladium-catalyzed domino reaction of aryl iodide, 2-bromophenylboronic acid, and norbornadiene to produce phenanthrenes has been developed. Norbornadiene serves both as the activator of ortho-C-H bond and the source of ethylene via a retro-Diels-Alder reaction. The method features inexpensive and readily available substrates, a broad range of functional groups, and good yields.
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Affiliation(s)
- Tianxin Hao
- National Engineering Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Wei Gao
- Jiangxi Academy of Forestry, Nanchang 330013, Jiangxi, China
| | - Sitian Yuan
- National Engineering Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Yi Liu
- National Engineering Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Yiqing Li
- National Engineering Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Yang Fu
- National Engineering Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Qiuping Ding
- National Engineering Research Center for Carbohydrate Synthesis, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
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14
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Sa Y, Lv X, Yao JY, Lu XY, Wu AB, Shu WM, Yu WC. Tandem Ene/[4 + 2] Cycloaddition Reaction for the Synthesis of 9-Benzylphenanthrenes from Arynes and α-(Bromomethyl)styrenes. J Org Chem 2023. [PMID: 37319302 DOI: 10.1021/acs.joc.3c00051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A tandem reaction for the synthesis of phenanthrenes from arynes and α-(bromomethyl)styrenes is reported. The transformation proceeds via an ene reaction of α-(bromomethyl)styrenes with arynes, followed by a [4 + 2] cycloaddition reaction. The reaction generates 9-benzylphenanthrene derivatives in moderate to excellent yields.
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Affiliation(s)
- Yun Sa
- Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China
| | - Xin Lv
- Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China
| | - Jia-Yu Yao
- Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China
| | - Xu-Yang Lu
- Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China
| | - Ai-Bin Wu
- Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China
| | - Wen-Ming Shu
- Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China
| | - Wei-Chu Yu
- Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China
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15
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Hakem A, Desmarets L, Sahli R, Malek RB, Camuzet C, François N, Lefèvre G, Samaillie J, Moureu S, Sahpaz S, Belouzard S, Ksouri R, Séron K, Rivière C. Luteolin Isolated from Juncus acutus L., a Potential Remedy for Human Coronavirus 229E. Molecules 2023; 28:molecules28114263. [PMID: 37298740 DOI: 10.3390/molecules28114263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 06/12/2023] Open
Abstract
The COVID-19 pandemic, caused by SARS-CoV-2, addressed the lack of specific antiviral drugs against coronaviruses. In this study, bioguided fractionation performed on both ethyl acetate and aqueous sub-extracts of Juncus acutus stems led to identifying luteolin as a highly active antiviral molecule against human coronavirus HCoV-229E. The apolar sub-extract (CH2Cl2) containing phenanthrene derivatives did not show antiviral activity against this coronavirus. Infection tests on Huh-7 cells, expressing or not the cellular protease TMPRSS2, using luciferase reporter virus HCoV-229E-Luc showed that luteolin exhibited a dose-dependent inhibition of infection. Respective IC50 values of 1.77 µM and 1.95 µM were determined. Under its glycosylated form (luteolin-7-O-glucoside), luteolin was inactive against HCoV-229E. Time of addition assay showed that utmost anti-HCoV-229E activity of luteolin was achieved when added at the post-inoculation step, indicating that luteolin acts as an inhibitor of the replication step of HCoV-229E. Unfortunately, no obvious antiviral activity for luteolin was found against SARS-CoV-2 and MERS-CoV in this study. In conclusion, luteolin isolated from Juncus acutus is a new inhibitor of alphacoronavirus HCoV-229E.
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Affiliation(s)
- Asma Hakem
- Joint Research Unit 1158, BioEcoAgro, Univ. Lille, INRAE, Univ. Liège, UPJV, JUNIA, Univ. Artois, Univ. Littoral Côte d'Opale, ICV-Institut Charles Viollette, 59650 Villeneuve-d'Ascq, France
- Laboratory of Aromatic and Medicinal Plants, Biotechnology Centre of Borj-Cedria (CBBC), Hammam-Lif 2050, Tunisia
| | - Lowiese Desmarets
- Center for Infection and Immunity of Lille (CIIL), Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9017, 59000 Lille, France
| | - Ramla Sahli
- Joint Research Unit 1158, BioEcoAgro, Univ. Lille, INRAE, Univ. Liège, UPJV, JUNIA, Univ. Artois, Univ. Littoral Côte d'Opale, ICV-Institut Charles Viollette, 59650 Villeneuve-d'Ascq, France
- Laboratory of Aromatic and Medicinal Plants, Biotechnology Centre of Borj-Cedria (CBBC), Hammam-Lif 2050, Tunisia
| | - Rawen Ben Malek
- Joint Research Unit 1158, BioEcoAgro, Univ. Lille, INRAE, Univ. Liège, UPJV, JUNIA, Univ. Artois, Univ. Littoral Côte d'Opale, ICV-Institut Charles Viollette, 59650 Villeneuve-d'Ascq, France
| | - Charline Camuzet
- Center for Infection and Immunity of Lille (CIIL), Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9017, 59000 Lille, France
| | - Nathan François
- Center for Infection and Immunity of Lille (CIIL), Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9017, 59000 Lille, France
| | - Gabriel Lefèvre
- Joint Research Unit 1158, BioEcoAgro, Univ. Lille, INRAE, Univ. Liège, UPJV, JUNIA, Univ. Artois, Univ. Littoral Côte d'Opale, ICV-Institut Charles Viollette, 59650 Villeneuve-d'Ascq, France
| | - Jennifer Samaillie
- Joint Research Unit 1158, BioEcoAgro, Univ. Lille, INRAE, Univ. Liège, UPJV, JUNIA, Univ. Artois, Univ. Littoral Côte d'Opale, ICV-Institut Charles Viollette, 59650 Villeneuve-d'Ascq, France
| | - Sophie Moureu
- Joint Research Unit 1158, BioEcoAgro, Univ. Lille, INRAE, Univ. Liège, UPJV, JUNIA, Univ. Artois, Univ. Littoral Côte d'Opale, ICV-Institut Charles Viollette, 59650 Villeneuve-d'Ascq, France
| | - Sevser Sahpaz
- Joint Research Unit 1158, BioEcoAgro, Univ. Lille, INRAE, Univ. Liège, UPJV, JUNIA, Univ. Artois, Univ. Littoral Côte d'Opale, ICV-Institut Charles Viollette, 59650 Villeneuve-d'Ascq, France
| | - Sandrine Belouzard
- Center for Infection and Immunity of Lille (CIIL), Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9017, 59000 Lille, France
| | - Riadh Ksouri
- Laboratory of Aromatic and Medicinal Plants, Biotechnology Centre of Borj-Cedria (CBBC), Hammam-Lif 2050, Tunisia
| | - Karin Séron
- Center for Infection and Immunity of Lille (CIIL), Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9017, 59000 Lille, France
| | - Céline Rivière
- Joint Research Unit 1158, BioEcoAgro, Univ. Lille, INRAE, Univ. Liège, UPJV, JUNIA, Univ. Artois, Univ. Littoral Côte d'Opale, ICV-Institut Charles Viollette, 59650 Villeneuve-d'Ascq, France
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16
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Di Fabio G, Zarrelli A. Dihydrophenanthrene Dimers: Why and Where It Is Possible to Isolate Their Precursors. Chem Biodivers 2023; 20:e202201068. [PMID: 36919925 DOI: 10.1002/cbdv.202201068] [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: 11/11/2022] [Accepted: 02/24/2023] [Indexed: 03/16/2023]
Abstract
An interesting class of compounds of natural origin is dihydrophenanthrene dimers, which are characterized by a series of remarkable biological properties. Considering the hypothesis that each dimer is obtained through a biosynthetic mechanism that involves the coupling of the corresponding radicals of the single dihydrophenanthrene unit, we identified 29 dihydrophenanthrenes. Of these dihydrophenanthrenes, 11 were new compounds that could be isolated from 10 different plant species; 11 had already been identified, but not yet isolated in the 17 different plant species from which the corresponding dimers had been isolated; and 7 were known and had been isolated in the same plant sources of the corresponding dimers. A targeted analysis of several natural extracts from specific plant sources would allow the identification of known or new molecules with potential and/or specific biological activities and, in a final analysis, would confirm the relative biosynthetic mechanism.
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Affiliation(s)
- Giovanni Di Fabio
- Department of Chemical Science, University of Naples FEDERICO II, Complesso Monte Sant'Angelo, 80126, Napoli, Italy
| | - Armando Zarrelli
- Department of Chemical Science, University of Naples FEDERICO II, Complesso Monte Sant'Angelo, 80126, Napoli, Italy
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17
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Smyrska-Wieleba N, Mroczek T. Natural Inhibitors of Cholinesterases: Chemistry, Structure-Activity and Methods of Their Analysis. Int J Mol Sci 2023; 24:ijms24032722. [PMID: 36769043 PMCID: PMC9916849 DOI: 10.3390/ijms24032722] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/24/2023] [Accepted: 01/26/2023] [Indexed: 02/04/2023] Open
Abstract
This article aims to provide an updated description and comparison of the data currently available in the literature (from the last 15 years) on the studied natural inhibitors of cholinesterases (IChEs), namely, acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE). These data also apply to the likely impact of the structures of the compounds on the therapeutic effects of available and potential cholinesterase inhibitors. IChEs are hitherto known compounds with various structures, activities and origins. Additionally, multiple different methods of analysis are used to determine the cholinesterase inhibitor potency. This summary indicates that natural sources are still suitable for the discovery of new compounds with prominent pharmacological activity. It also emphasizes that further studies are needed regarding the mechanisms of action or the structure-activity correlation to discuss the issue of cholinesterase inhibitors and their medical application.
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18
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Whaley AK, Minakov DA, Orlova AA, Ponkratova AO, Fock E, Rukoyatkina N, Gambaryan S, Luzhanin VG. Analysis of Empetrum nigrum L. lipophilic secondary metabolites, their metabolomic profiles and antioxidant activity. JOURNAL OF ESSENTIAL OIL RESEARCH 2023. [DOI: 10.1080/10412905.2023.2169377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Andrei K. Whaley
- Department of Pharmacognosy, Saint Petersburg State Chemical Pharmaceutical University, Saint Petersburg, Russian Federation
| | | | - Anastasia A. Orlova
- Laboratory of Cell Regulation, K.A. Timiryazev Institute of Plant Physiology RAS, Moscow
| | - Anastasiia O. Ponkratova
- Department of Pharmacognosy, Saint Petersburg State Chemical Pharmaceutical University, Saint Petersburg, Russian Federation
| | - Ekaterina Fock
- Laboratory of Cellular Mechanisms of Blood Homeostasis, Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint Petersburg, Russia
| | - Natalia Rukoyatkina
- Laboratory of Cellular Mechanisms of Blood Homeostasis, Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint Petersburg, Russia
| | - Stepan Gambaryan
- Laboratory of Cellular Mechanisms of Blood Homeostasis, Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint Petersburg, Russia
| | - Vladimir G. Luzhanin
- Department of Pharmacognosy, Saint Petersburg State Chemical Pharmaceutical University, Saint Petersburg, Russian Federation
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19
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Li Y, Wise DE, Mitchell JK, Parasram M. Cascade Synthesis of Phenanthrenes under Photoirradiation. J Org Chem 2023; 88:717-721. [PMID: 36525632 DOI: 10.1021/acs.joc.2c02202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We report a photoinduced phenanthrene synthesis from aryl iodides and styrenes through an arylation/cyclization cascade. Compared to prior methods, this approach obviates the need for hazardous reagents and provides access to unsymmetrical phenanthrenes with good functional group tolerance. Mechanistic studies revealed that photoexcitation of aryl iodides leads to homolytic C-I bond cleavage. Arylation of styrenes with the formed aryl radical species furnishes stilbene derivatives, which undergo photoinduced cyclization promoted by iodine generated in situ to yield phenanthrene products.
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Affiliation(s)
- Yongkang Li
- Department of Chemistry, New York University, 24 Waverly Pl, third floor, New York, New York 10003, United States
| | - Dan E Wise
- Department of Chemistry, New York University, 24 Waverly Pl, third floor, New York, New York 10003, United States
| | - Joshua K Mitchell
- Department of Chemistry, New York University, 24 Waverly Pl, third floor, New York, New York 10003, United States
| | - Marvin Parasram
- Department of Chemistry, New York University, 24 Waverly Pl, third floor, New York, New York 10003, United States
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20
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Bazzicalupo M, Calevo J, Smeriglio A, Cornara L. Traditional, Therapeutic Uses and Phytochemistry of Terrestrial European Orchids and Implications for Conservation. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12020257. [PMID: 36678970 PMCID: PMC9863304 DOI: 10.3390/plants12020257] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 12/30/2022] [Accepted: 01/03/2023] [Indexed: 06/12/2023]
Abstract
The Orchidaceae family accounts for about 28,000 species, and most of them are mentioned in the folk medicine of nations around the world. The use of terrestrial orchids in European and Mediterranean regions has been reported since ancient times, but little information is available on their medicinal properties, as well as on their phytochemicals and biological activities. However, plant collection for human use is still listed as one of the main threats for terrestrial orchids, alongside other menacing factors such as wrong habitat management and disturbance to symbionts, such as pollinators and mycorrhizal fungi. Therefore, the primary aim of this review was to resume and discuss available information regarding the past and current popular uses of European orchids. We then grouped phytochemical data to evaluate the presence of bioactive compounds of pharmacological relevance, and we discussed whether these could support the therapeutic employment of the different organs. Finally, we briefly debated the sustainability of orchid utilizations, considering the different threatening factors and conservation actions including plant propagation methods.
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Affiliation(s)
- Miriam Bazzicalupo
- Department of Earth, Environment and Life Sciences (DISTAV), University of Genova, 16132 Genova, Italy
- CREA—Research Centre for Vegetable and Ornamental Crops, Council for Agricultural Research and Economics, 18038 Sanremo, Italy
| | - Jacopo Calevo
- Department of Ecosystem Stewardship, Jodrell Laboratory, Royal Botanic Gardens, KEW, Richmond, Surrey TW9 3DS, UK
- School of Molecular and Life Sciences, Curtin University, Perth, WA 6102, Australia
| | - Antonella Smeriglio
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, 98166 Messina, Italy
| | - Laura Cornara
- Department of Earth, Environment and Life Sciences (DISTAV), University of Genova, 16132 Genova, Italy
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21
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Asare MO, Száková J, Tlustoš P. The fate of secondary metabolites in plants growing on Cd-, As-, and Pb-contaminated soils-a comprehensive review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:11378-11398. [PMID: 36529801 PMCID: PMC9760545 DOI: 10.1007/s11356-022-24776-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 12/11/2022] [Indexed: 04/12/2023]
Abstract
The study used scattered literature to summarize the effects of excess Cd, As, and Pb from contaminated soils on plant secondary metabolites/bioactive compounds (non-nutrient organic substances). Hence, we provided a systematic overview involving the sources and forms of Cd, As, and Pb in soils, plant uptake, mechanisms governing the interaction of these risk elements during the formation of secondary metabolites, and subsequent effects. The biogeochemical characteristics of soils are directly responsible for the mobility and bioavailability of risk elements, which include pH, redox potential, dissolved organic carbon, clay content, Fe/Mn/Al oxides, and microbial transformations. The radial risk element flow in plant systems is restricted by the apoplastic barrier (e.g., Casparian strip) and chelation (phytochelatins and vacuole sequestration) in roots. However, bioaccumulation is primarily a function of risk element concentration and plant genotype. The translocation of risk elements to the shoot via the xylem and phloem is well-mediated by transporter proteins. Besides the dysfunction of growth, photosynthesis, and respiration, excess Cd, As, and Pb in plants trigger the production of secondary metabolites with antioxidant properties to counteract the toxic effects. Eventually, this affects the quantity and quality of secondary metabolites (including phenolics, flavonoids, and terpenes) and adversely influences their antioxidant, antiinflammatory, antidiabetic, anticoagulant, and lipid-lowering properties. The mechanisms governing the translocation of Cd, As, and Pb are vital for regulating risk element accumulation in plants and subsequent effects on secondary metabolites.
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Affiliation(s)
- Michael O Asare
- Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food, and Natural Resources, Czech University of Life Sciences, Kamýcká 129, 165 21, Prague 6, Czech Republic.
| | - Jiřina Száková
- Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food, and Natural Resources, Czech University of Life Sciences, Kamýcká 129, 165 21, Prague 6, Czech Republic
| | - Pavel Tlustoš
- Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food, and Natural Resources, Czech University of Life Sciences, Kamýcká 129, 165 21, Prague 6, Czech Republic
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22
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Lipińska MM, Haliński ŁP, Gołębiowski M, Kowalkowska AK. Active Compounds with Medicinal Potential Found in Maxillariinae Benth. (Orchidaceae Juss.) Representatives-A Review. Int J Mol Sci 2023; 24:ijms24010739. [PMID: 36614181 PMCID: PMC9821772 DOI: 10.3390/ijms24010739] [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: 11/28/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 01/04/2023] Open
Abstract
Orchids are widely used in traditional medicine for the treatment of a whole range of different health conditions, and representatives of the Neotropical subtribe Maxillariinae are not an exception. They are utilized, for instance, for their spasmolytic and anti-inflammatory activities. In this work, we analyze the literature concerning the chemical composition of the plant extracts and secretions of this subtribe's representatives published between 1991 and 2022. Maxillariinae is one of the biggest taxa within the orchid family; however, to date, only 19 species have been investigated in this regard and, as we report, they produce 62 semiochemicals of medical potential. The presented review is the first summary of biologically active compounds found in Maxillariinae.
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Affiliation(s)
- Monika M. Lipińska
- Department of Plant Taxonomy and Nature Conservation, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308 Gdansk, Poland
- Foundation Polish Orchid Association, 81-825 Sopot, Poland
- Correspondence:
| | - Łukasz P. Haliński
- Laboratory of Analysis of Natural Compounds, Department of Environmental Analytics, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdansk, Poland
| | - Marek Gołębiowski
- Laboratory of Analysis of Natural Compounds, Department of Environmental Analytics, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdansk, Poland
| | - Agnieszka K. Kowalkowska
- Department of Plant Cytology and Embryology, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308 Gdansk, Poland
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23
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Gong S, Lv R, Fan Y, Shi Y, Zhang M. The potential mechanism of Bletilla striata in the treatment of ulcerative colitis determined through network pharmacology, molecular docking, and in vivo experimental verification. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2022; 396:983-1000. [PMID: 36576506 PMCID: PMC9795151 DOI: 10.1007/s00210-022-02370-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 12/16/2022] [Indexed: 12/29/2022]
Abstract
Ulcerative colitis (UC) is a chronic nonspecific intestinal inflammatory disease, which belongs to a subtype of inflammatory bowel disease, but still lacks effective drug treatment. Bletilla striata (B. striata) is one of the most valuable traditional Chinese medicines (TCMs) in China, can stop bleeding, can promote wound healing, and can regulate immunity. Based on data mining, B. striata was found to be a common TCM for the treatment of UC, but the exact therapeutic mechanism is not yet known. This study aims to explore the potential mechanisms of B. striata in the treatment of UC using network pharmacology, molecular docking techniques, and in vivo experimental research. We extracted the active ingredients and targets of B. striata from the Traditional Chinese Medicine Systems Pharmacology (TCMSP) database and analysis platform. We retrieved and screened the corresponding UC-related target genes in multiple databases. Subsequently, we constructed an herb-ingredient-target-disease-network, generated a protein-protein interaction network, performed Gene Ontology enrichment analysis, and performed Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis to identify potential treatment mechanisms. After screening for key active ingredients and target genes, we performed molecular docking using AutoDock Vina software to select the best binding target for molecular docking and validate the binding activity. The UC model was established in mice, and the results of network pharmacology and molecular docking were verified by in vivo experiments. In all, 5 compounds were obtained from the TCMSP database, and 74 UC-related pathogenic genes were obtained from GeneCards, DisGeNET, OMIM, TTD, and DrugBank. After KEGG enrichment analysis, pathways in cancer, the phosphatidylinositol 3-kinase (PI3K)/AKT signalling pathway, and metabolic pathways were identified as the top three signalling pathways associated with UC treatment. The results of molecular docking showed that the active components of B. striata have good binding activities to the pivotal targets epidermal growth factor receptor (EGFR) and PIK3CA. In a dextran sulphate sodium-induced colitis model, we found that B. striata can alleviate the symptoms of UC, decrease the secretion of the inflammatory cytokines interleukin-6 and tumour necrosis factor-α, and downregulate the expression levels of EGFR, PIK3CA, and p-AKT. In conclusion, the treatment of UC with B. striata may alleviate the inflammatory response of the colon, and B. striata mainly inhibits the EGFR/PI3K/AKT signalling pathways.
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Affiliation(s)
- Shanshan Gong
- Department of Gastroenterology, The Third Affiliated Hospital of Zhejiang Chinese Medical University, No. 219 Mo Ganshan Road, Xihu District, Hangzhou, 310000 Zhejiang Province China
| | - Ronghua Lv
- Department of Gastroenterology, The Third Affiliated Hospital of Zhejiang Chinese Medical University, No. 219 Mo Ganshan Road, Xihu District, Hangzhou, 310000 Zhejiang Province China
| | - Yihong Fan
- Department of Gastroenterology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310006 Zhejiang Province China
| | - Yichun Shi
- Department of Gastroenterology, The Third Affiliated Hospital of Zhejiang Chinese Medical University, No. 219 Mo Ganshan Road, Xihu District, Hangzhou, 310000 Zhejiang Province China
| | - Mieqing Zhang
- Department of Gastroenterology, The Third Affiliated Hospital of Zhejiang Chinese Medical University, No. 219 Mo Ganshan Road, Xihu District, Hangzhou, 310000 Zhejiang Province China
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24
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Lanzi M, Rogge T, Truong TS, Houk KN, Wencel-Delord J. Cyclic Diaryl λ 3-Chloranes: Reagents and Their C-C and C-O Couplings with Phenols via Aryne Intermediates. J Am Chem Soc 2022; 145:345-358. [PMID: 36535642 PMCID: PMC9837845 DOI: 10.1021/jacs.2c10090] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Hypervalent chloranes are a class of rare and poorly explored reagents. Their unique electronic properties confer reactivity that is complementary to that of the common iodanes and emerging bromanes. Highly chemo- and regioselective, metal-free, and mild C-C and C-O couplings are reported here. Experimental and computational mechanistic studies elucidate the unprecedented reactivities and selectivities of these systems and the intermediacy of aryne intermediates. The synthetic potential of these transformations is further demonstrated via the post-functionalization of C-C and C-O coupling products obtained from reactions of chloranes with phenols under different conditions.
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Affiliation(s)
- Matteo Lanzi
- Laboratoire
d’Innovation Moléculaire et Applications (UMR CNRS 7042),
Université de Strasbourg/Université de Haute Alsace,
ECPM, 67087Strasbourg, France
| | - Torben Rogge
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, California90095, United States
| | - Tan Sang Truong
- Laboratoire
d’Innovation Moléculaire et Applications (UMR CNRS 7042),
Université de Strasbourg/Université de Haute Alsace,
ECPM, 67087Strasbourg, France
| | - K. N. Houk
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, California90095, United States,
| | - Joanna Wencel-Delord
- Laboratoire
d’Innovation Moléculaire et Applications (UMR CNRS 7042),
Université de Strasbourg/Université de Haute Alsace,
ECPM, 67087Strasbourg, France,
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Lipińska MM, Gołębiowski M, Szlachetko DL, Kowalkowska AK. Floral attractants in the black orchid Brasiliorchis schunkeana (Orchidaceae, Maxillariinae): clues for presumed sapromyophily and potential antimicrobial activity. BMC PLANT BIOLOGY 2022; 22:575. [PMID: 36496375 PMCID: PMC9737770 DOI: 10.1186/s12870-022-03944-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Orchids have evolved various strategies that aim to ensure their reproduction success. These may include the production of rewards for pollinators, or on the contrary, deception. Specific sets of features such as flower morphology, color, nectar, and odor presence (or lack thereof) are considered to determine suitability for pollination by different groups of animals. Stingless bees are thought to be the primary pollinators of the orchids of the Neotropical subtribe Maxillariinae. However, almost black flowered Brasiliorchis schunkeana at first glance presents floral adaptations that may suggest another pollination syndrome-sapromyophily. RESULTS A few traces of secretion were noticed on the glabrous lip callus and lip apex built by conical to villiform papillae (SEM analysis). Histochemical studies revealed huge amounts of lipids in the epidermis, subepidermis, and some parenchyma cells (SBB test) with various stages of lipids accumulation between cells. Further TEM analysis showed a heterogeneous (lipoid and phenolic) nature of secretion. The dense osmiophilic cytoplasm contained organelles (RER, free ribosomes, dictyosomes, plastids with plastoglobuli, nucleus) and vesicles migrating to plasmalemma. The vesicles, osmiophilic globules, and flocculent material were visible in periplasmic space. The central vacuole possessed osmiophilic phenolic content and flocculent material. GC-MS analysis revealed in floral extract the presence of 7,9-di-tert-butyl-1-oxaspiro(4,5)deca-6,9-diene-2,8-dione (77.06%) and 2,5-di-tert-butyl-1,4-benzoquinone (16.65%). Both compounds are known for their biological activity. CONCLUSIONS The juxtaposition of results led us to the conclusion that the labellar tissue produces lipoid and phenolic material, which is responsible for the glossiness and rotten herring scent. This type of secretion could be classified as a phenolic resin. The chemical analysis revealed the presence of five semiochemicals that are known to be attractants for some Diptera, which together with the rest of the results constitutes a strong premise that representatives of this order could be potential pollinators of B. schunkeana. Field observations however are still needed to confirm this pollination syndrome.
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Affiliation(s)
- Monika M Lipińska
- Department of Plant Taxonomy and Nature Conservation, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308, Gdańsk, Poland
- Foundation Polish Orchid Association, 81-825, Sopot, Poland
| | - Marek Gołębiowski
- Department of Environmental Analytics, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308, Gdańsk, Poland
| | - Dariusz L Szlachetko
- Department of Plant Taxonomy and Nature Conservation, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308, Gdańsk, Poland
| | - Agnieszka K Kowalkowska
- Department of Plant Cytology and Embryology, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308, Gdańsk, Poland.
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Nguyen QH, Um TW, Shin S. α-Carbonyl Radicals from N-Enoxybenzotriazoles: De Novo Synthesis of 9-Phenanthrols. Org Lett 2022; 24:8337-8342. [DOI: 10.1021/acs.orglett.2c03356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Quynh H. Nguyen
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Tae-Woong Um
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Seunghoon Shin
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
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Neves PA, Santos FR, Araújo LD, Taniguchi S, Ferreira PAL, Figueira RCL, Lourenço RA, Bícego MC. Unusual natural polycyclic aromatic hydrocarbons in sediment cores of an Amazon estuary. MARINE POLLUTION BULLETIN 2022; 183:114059. [PMID: 36029583 DOI: 10.1016/j.marpolbul.2022.114059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 08/10/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) most likely derived from natural sources were observed in two sediment cores covering the last 100 years in an Amazon estuarine region. A considerable change in the PAHs main source was observed in the 1960s. Before the 1960s, the sources of PAHs seem to be related to biogenic and/or early-diagenetic processes. Concentrations of perylene were higher before the 1960s and suggest that its primary source to the sediments in the Amazon region is linked to a short-term diagenetic transformation of their biogenic precursors. The natural formation of alkylated PAHs in sediments was linked to the methylation of the parental aromatic hydrocarbons due to sediment maturation processes and the dehydrogenation of sterols in the sediments. The relatively rapid reaction occurring in recent sediments of the Amazon region suggests the importance of the microbial community in the transformation of biogenic precursors to alkylated-PAHs in the sediments.
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Affiliation(s)
- Patricia A Neves
- Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico 191, São Paulo, SP 05508-120, Brazil
| | - Felipe R Santos
- Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico 191, São Paulo, SP 05508-120, Brazil.
| | - Lígia D Araújo
- Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico 191, São Paulo, SP 05508-120, Brazil
| | - Satie Taniguchi
- Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico 191, São Paulo, SP 05508-120, Brazil
| | - Paulo A L Ferreira
- Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico 191, São Paulo, SP 05508-120, Brazil
| | - Rubens C L Figueira
- Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico 191, São Paulo, SP 05508-120, Brazil
| | - Rafael A Lourenço
- Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico 191, São Paulo, SP 05508-120, Brazil
| | - Márcia C Bícego
- Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico 191, São Paulo, SP 05508-120, Brazil
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Yadav S, Nanubolu JB, Suresh S. Sequential One-Pot Carbene-Catalyzed Intramolecular Stetter Reaction and Acid-Mediated Condensation: Access to Heteroatom Analogues of π-Extended Polyaromatic Hydrocarbons. Org Lett 2022; 24:6930-6935. [PMID: 36129395 DOI: 10.1021/acs.orglett.2c02693] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this Letter, we disclose a simple and effective method to access a variety of phenanthro[9,10-b]furan and 1H-dibenzo[e,g]indole derivatives based on the design of a carbene-catalyzed intramolecular Stetter reaction followed by a Paal-Knorr reaction in one-pot. These compounds are a class of π-extended polycyclic aromatic hydrocarbon (PAH) derivatives containing an oxygen/nitrogen atom. The practical utility of the developed transformation was demonstrated on the gram scales and postsynthetic transformations thereof.
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Affiliation(s)
- Sanjay Yadav
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Jagadeesh Babu Nanubolu
- Laboratory of X-ray Crystallography, Department of Analytical Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - Surisetti Suresh
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
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Kim H, Cao TQ, Yeo CE, Shin SH, Kim H, Hong DH, Hahn D. Development and Validation of Quantitative Analysis Method for Phenanthrenes in Peels of the Dioscorea Genus. J Microbiol Biotechnol 2022; 32:976-981. [PMID: 35879304 PMCID: PMC9628958 DOI: 10.4014/jmb.2206.06037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 07/18/2022] [Indexed: 12/15/2022]
Abstract
Phenanthrenes are bioactive phenolic compounds found in genus Dioscorea, in which they are distributed more in peel than in flesh. Recent studies on phenanthrenes from Dioscorea sp. peels have revealed the potential for valuable biomaterials. Herein, an analytical method using high-performance liquid chromatography (HPLC) for quantitation of bioactive phenanthrenes was developed and validated. The calibration curves were obtained using the phenanthrenes (1-3) previously isolated from Dioscorea batatas concentrations in the range of 0.625-20.00 μg/ml with a satisfactory coefficient of determination (R2) of 0.999. The limit of detection (LOD) and the limit of quantification (LOQ) values of the isolated phenanthrenes ranged from 0.78-0.89 and 2.38-2.71 μg/ml, respectively. The intraday and interday precision ranged from 0.25-7.58%. The recoveries of the isolated phenanthrenes were from 95 to 100% at concentrations of 1.25, 2.5, and 5.0 μg/ml. Additionally, phenanthrenes (1-3) were found in all investigated peel extracts. Hence, the developed method was encouraging for the quantitative analysis of phenanthrenes in genus Dioscorea.
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Affiliation(s)
- Hunseong Kim
- School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Thao Quyen Cao
- Coastal Agriculture Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Chae-eun Yeo
- Department of Integrative Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Seung Ho Shin
- Department of Food and Nutrition, Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Hiyoung Kim
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Dong-Hyuck Hong
- School of Bio-Industrial Machinery Engineering, Kyungpook National University, Daegu 41566, Republic of Korea,Corresponding authors D.H. Hong Phone: +82-53-950-5790 Fax: +82-53-950-6780 E-mail:
| | - Dongyup Hahn
- School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Republic of Korea,Coastal Agriculture Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea,Department of Integrative Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea,
D. Hahn Phone: +82-53-950-5756 Fax: +82-53-950-6750 E-mail:
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30
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Bakacsy L, Sípos L, Barta A, Stefkó D, Vasas A, Szepesi Á. Concentration-dependent effects of effusol and juncusol from Juncus compressus on seedling development of Arabidopsis thaliana. Sci Rep 2022; 12:13870. [PMID: 35974076 PMCID: PMC9381551 DOI: 10.1038/s41598-022-18063-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 08/04/2022] [Indexed: 11/15/2022] Open
Abstract
Juncus species are valuable sources of phenanthrene compounds that have been used in traditional Chinese medicine for thousands of years. Effusol and juncusol are the most investigated compounds reported to have antimicrobial and anticancer effects; however, to date, their effects on higher plants have not been investigated. In this study, we examined the effects of effusol and juncusol on the growth and other biochemical parameters of the dicot model plant Arabidopsis thaliana in a concentration-dependent manner with a focus on polyamine metabolism. Phenanthrene induced toxic effects on plant growth and development, while effusol and juncusol induced higher biomass and maintained antioxidant defence mechanisms associated with reduced polyamine degradation. Taken together, our results suggest that these compounds could be good candidates for new biopesticide or biostimulant plant growth regulators in the future.
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Affiliation(s)
- László Bakacsy
- Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Közép Fasor 52., Szeged, 6726, Hungary
| | - Lilla Sípos
- Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Közép Fasor 52., Szeged, 6726, Hungary
| | - Anita Barta
- Department of Pharmacognosy, Faculty of Pharmacy, University of Szeged, Eötvös u. 6, Szeged, 6720, Hungary
| | - Dóra Stefkó
- Department of Pharmacognosy, Faculty of Pharmacy, University of Szeged, Eötvös u. 6, Szeged, 6720, Hungary
| | - Andrea Vasas
- Department of Pharmacognosy, Faculty of Pharmacy, University of Szeged, Eötvös u. 6, Szeged, 6720, Hungary
| | - Ágnes Szepesi
- Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Közép Fasor 52., Szeged, 6726, Hungary.
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Salamone S, Waltl L, Pompignan A, Grassi G, Chianese G, Koeberle A, Pollastro F. Phytochemical Characterization of Cannabis sativa L. Chemotype V Reveals Three New Dihydrophenanthrenoids That Favorably Reprogram Lipid Mediator Biosynthesis in Macrophages. PLANTS 2022; 11:plants11162130. [PMID: 36015434 PMCID: PMC9414986 DOI: 10.3390/plants11162130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/04/2022] [Accepted: 08/05/2022] [Indexed: 11/16/2022]
Abstract
The growing general interest surrounding Cannabis sativa L. has led to a renewal in breeding and resulted in an impressive variability of chemotypical characteristics that required the division of cannabis into different recognized chemotypes. The chemotype V has been overlooked in terms of phytochemical composition due to the almost total absence of cannabinoids, on which biomedical attention is focused. Systematic approaches addressing diverse chemotypes are, however, needed to discriminate and define phytochemical aspects beyond cannabinoids. Such thoroughly characterized chemotypes guarantee blinding in controlled studies by mimicking the sensory properties of hemp and may help to unravel the “entourage effect”. Capitalizing on the ability of cannabis to synthesize a large number of non-cannabinoid phenolic compounds, we here investigated, for the first time, the composition of the Ermo chemotype V and identified new compounds: two dihydrophenanthrenes and the methoxy-dihydrodenbinobin. All three compounds suppress pro-inflammatory leukotriene biosynthesis in activated macrophage subtypes by targeting 5-lipoxygenase, but substantially differ in their capacity to elevate the levels of specialized pro-resolving lipid mediators and their precursors in M2 macrophages. We conclude that the discovered compounds likely contribute to the anti-inflammatory properties of Cannabis sativa L. chemotype V and might promote inflammation resolution by promoting a lipid mediator class switch.
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Affiliation(s)
- Stefano Salamone
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, 28100 Novara, Italy
- PlantaChem Srls, 28100 Novara, Italy
| | - Lorenz Waltl
- Michael Popp Institute and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020 Innsbruck, Austria
| | - Anna Pompignan
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, 28100 Novara, Italy
| | | | - Giuseppina Chianese
- Department of Pharmacy, University of Naples Federico II, 80131 Naples, Italy
| | - Andreas Koeberle
- Michael Popp Institute and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020 Innsbruck, Austria
- Correspondence: (A.K.); (F.P.); Tel.: +43-512-507-57903 (A.K.); +39-321-375-744 (F.P.)
| | - Federica Pollastro
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, 28100 Novara, Italy
- PlantaChem Srls, 28100 Novara, Italy
- Correspondence: (A.K.); (F.P.); Tel.: +43-512-507-57903 (A.K.); +39-321-375-744 (F.P.)
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Samsonowicz-Górski J, Koszelewski D, Kowalczyk P, Śmigielski P, Hrunyk A, Kramkowski K, Wypych A, Szymczak M, Lizut R, Ostaszewski R. Promiscuous Lipase-Catalyzed Knoevenagel-Phospha-Michael Reaction for the Synthesis of Antimicrobial β-Phosphono Malonates. Int J Mol Sci 2022; 23:ijms23158819. [PMID: 35955950 PMCID: PMC9368977 DOI: 10.3390/ijms23158819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/02/2022] [Accepted: 08/06/2022] [Indexed: 12/11/2022] Open
Abstract
An enzymatic route for phosphorous–carbon bond formation was developed by discovering new promiscuous activity of lipase. We reported a new metal-free biocatalytic method for the synthesis of pharmacologically relevant β-phosphonomalononitriles via a lipase-catalyzed one-pot Knoevenagel–phospha–Michael reaction. We carefully analyzed the best conditions for the given reaction: the type of enzyme, temperature, and type of solvent. A series of target compounds was synthesized, with yields ranging from 43% to 93% by enzymatic reaction with Candida cylindracea (CcL) lipase as recyclable and, a few times, reusable catalyst. The advantages of this protocol are excellent yields, mild reaction conditions, low costs, and sustainability. The applicability of the same catalyst in the synthesis of β-phosphononitriles is also described. Further, the obtained compounds were validated as new potential antimicrobial agents with characteristic E. coli bacterial strains. The pivotal role of such a group of phosphonate derivatives on inhibitory activity against selected pathogenic E. coli strains was revealed. The observed results are especially important in the case of the increasing resistance of bacteria to various drugs and antibiotics. The impact of the β-phosphono malonate chemical structure on antimicrobial activity was demonstrated. The crucial role of the substituents attached to the aromatic ring on the inhibitory action against selected pathogenic E. coli strains was revealed. Among tested compounds, four β-phosphonate derivatives showed an antimicrobial activity profile similar to that obtained with currently used antibiotics such as ciprofloxacin, bleomycin, and cloxacillin. In addition, the obtained compounds constitute a convenient platform for further chemical functionalization, allowing for a convenient change in their biological activity profile. It should also be noted that the cost of the compounds obtained is low, which may be an attractive alternative to the currently used antimicrobial agents. The observed results are especially important because of the increasing resistance of bacteria to various drugs and antibiotics.
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Affiliation(s)
| | - Dominik Koszelewski
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland
- Correspondence: (D.K.); (P.K.); Tel.: +48-223432012 (D.K.); +48-227653301 (P.K.)
| | - Paweł Kowalczyk
- Department of Animal Nutrition, The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
- Correspondence: (D.K.); (P.K.); Tel.: +48-223432012 (D.K.); +48-227653301 (P.K.)
| | - Paweł Śmigielski
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland
| | - Anastasiia Hrunyk
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland
| | - Karol Kramkowski
- Department of Physical Chemistry, Medical University of Bialystok, 15-089 Białystok, Poland
| | - Aleksandra Wypych
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, 87-100 Toruń, Poland
| | - Mateusz Szymczak
- Department of Molecular Virology, Institute of Microbiology, Faculty of Biology, University of Warsaw, 02-096 Warsaw, Poland
| | - Rafał Lizut
- Institute of Mathematics, Informatics and Landscape Architecture, The John Paul II Catholic University of Lublin, 20-708 Lublin, Poland
| | - Ryszard Ostaszewski
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland
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Jiang S, Wang M, Zafar S, Jiang L, Luo J, Zhao H, Tian S, Zhu Y, Peng C, Wang W. Phytochemistry, pharmacology and clinical applications of the traditional Chinese herb Pseudobulbus Cremastrae seu Pleiones (Shancigu): A review. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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34
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Kuo YJ, Pei JK, Chao WW. Pharmacological and Chemical Potential of Spiranthes sinensis (Orchidaceae): A Narrative Review. PLANTS 2022; 11:plants11131692. [PMID: 35807644 PMCID: PMC9269428 DOI: 10.3390/plants11131692] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/17/2022] [Accepted: 06/23/2022] [Indexed: 12/22/2022]
Abstract
Orchidaceae is one of the largest families of flowering plants with more than 27,000 accepted species, and more than 31,000–35,000 species are estimated to exist in total. The orchid Spiranthes sinensis (Pers.) Ames, having ornamental and medicinal value, is widely distributed throughout Asia and Oceania. S. sinensis (Shou Tsao) is also known as Panlongshen among the common folk herbs. It has a fleshy root similar to ginseng, and the entire plant is widely used in traditional Chinese medicine. Owing to overexploitation and habitat destruction in recent years, the wild population has become scarce. The traits of this species show obvious differences in different countries. In the Taiwanese climate, it flowers during the Ching Ming Festival, also called the ching ming tsao. Previous investigations into S. sinensis have revealed the presence of flavonoids, homocyclotirucallane, dihydrophenanthrenes, ferulic acid, and 3,4-dihydroxybenzaldehyde. Phenolic constituents of structural and biological interest, including phenanthrenes and flavonoids, have been isolated and identified from S. sinensis. This natural product possesses extensive bioactivity, including anti-tumor, anti-inflammatory, and antioxidant effects. In this review, we outline the herbal medicine formulations and plant-derived natural products of S. sinensis.
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Affiliation(s)
- Yu-Jen Kuo
- Department of Health Wellness and Marketing, Kainan University, 1 Kainan Rd., Shinshing, Luchu, Taoyuan 33857, Taiwan; (Y.-J.K.); (J.-K.P.)
| | - Jin-Kuo Pei
- Department of Health Wellness and Marketing, Kainan University, 1 Kainan Rd., Shinshing, Luchu, Taoyuan 33857, Taiwan; (Y.-J.K.); (J.-K.P.)
| | - Wen-Wan Chao
- Department of Nutrition and Health Sciences, Kainan University, 1 Kainan Rd., Shinshing, Luchu, Taoyuan 33857, Taiwan
- Correspondence: ; Tel.: +886-3-3412500 (ext. 6250)
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35
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El-Sayed ESR, Hazaa MA, Shebl MM, Amer MM, Mahmoud SR, Khattab AA. Bioprospecting endophytic fungi for bioactive metabolites and use of irradiation to improve their bioactivities. AMB Express 2022. [PMID: 35438322 DOI: 10.1186/s13568-022-01386x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023] Open
Abstract
The search for new bioactive compounds with innovative modes of action and chemistry are desperately needed to tackle the increased emergence of drug-resistant microbes. With this view, this paper was conducted for the isolation, identification, and biological evaluation of fungal endophytes of eleven different plant species. A total of 69 endophytic strains were isolated and tested for the presence of bioactive metabolites with antifungal, antibacterial, anticancer, and antioxidant properties in their extracts. Upon screening, two promising strains were found to have all the before-mentioned activities. These strains were Aspergillus sydowii isolated from the bark of Ricinus communis and Aspergillus flavus isolated from the twigs of Psidium guajava. Major compounds present in extracts of the two strains were identified by GC-Mass analyses. Several well-known bioactive compounds as well as unreported ones were identified in the fungal extracts of the two strains. Furthermore, gamma irradiation (at 1000 Gy) of the fungal cultures resulted in improved bioactivities of extracts from the two strains. These findings recommend the two fungal strains as sources of antimicrobial, anticancer, and antioxidant compounds which may aid in the development of novel drugs. The presented research also explains the high-value of fungal endophytes as untapped sources of bioactive metabolites.
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Affiliation(s)
- El-Sayed R El-Sayed
- Plant Research Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Cairo, Egypt.
| | - Magdia A Hazaa
- Biological Applications Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Magdy M Shebl
- Biological Applications Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Mahmoud M Amer
- Department of Botany, and Microbiology Faculty of Science, Benha University, Benha, Qalubiya Governorate, Egypt
| | - Samar R Mahmoud
- Biological Applications Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Abeer A Khattab
- Department of Botany, and Microbiology Faculty of Science, Benha University, Benha, Qalubiya Governorate, Egypt
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36
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El-Sayed ESR, Hazaa MA, Shebl MM, Amer MM, Mahmoud SR, Khattab AA. Bioprospecting endophytic fungi for bioactive metabolites and use of irradiation to improve their bioactivities. AMB Express 2022; 12:46. [PMID: 35438322 PMCID: PMC9018947 DOI: 10.1186/s13568-022-01386-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 04/09/2022] [Indexed: 01/25/2023] Open
Abstract
The search for new bioactive compounds with innovative modes of action and chemistry are desperately needed to tackle the increased emergence of drug-resistant microbes. With this view, this paper was conducted for the isolation, identification, and biological evaluation of fungal endophytes of eleven different plant species. A total of 69 endophytic strains were isolated and tested for the presence of bioactive metabolites with antifungal, antibacterial, anticancer, and antioxidant properties in their extracts. Upon screening, two promising strains were found to have all the before-mentioned activities. These strains were Aspergillus sydowii isolated from the bark of Ricinus communis and Aspergillus flavus isolated from the twigs of Psidium guajava. Major compounds present in extracts of the two strains were identified by GC-Mass analyses. Several well-known bioactive compounds as well as unreported ones were identified in the fungal extracts of the two strains. Furthermore, gamma irradiation (at 1000 Gy) of the fungal cultures resulted in improved bioactivities of extracts from the two strains. These findings recommend the two fungal strains as sources of antimicrobial, anticancer, and antioxidant compounds which may aid in the development of novel drugs. The presented research also explains the high-value of fungal endophytes as untapped sources of bioactive metabolites. Discovery of two promising fungal endophytes with divers’ range of bioactivities Extracts of the two strains showed antimicrobial, anticancer, and antioxidant activities Exposure to gamma rays at 1000 Gy significantly enhanced all the bioactivities.
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Adomėnienė A, Venskutonis PR. Dioscorea spp.: Comprehensive Review of Antioxidant Properties and Their Relation to Phytochemicals and Health Benefits. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27082530. [PMID: 35458730 PMCID: PMC9026138 DOI: 10.3390/molecules27082530] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/25/2022] [Accepted: 04/08/2022] [Indexed: 12/23/2022]
Abstract
Dioscorea, consisting of over 600 species, is the most important genus in the Dioscoreaceae family; however, the practically used plants, which are commonly called yam, are restricted to a remarkably smaller number of species. Numerous studies have reported the high nutritional value of yam, particularly as an alternative source of starch and some important micronutrients. Several Dioscorea species are widely used for various medicinal purposes as well. In many studies, the bioactivities and health benefits of Dioscorea extracts and other preparations have been related to the presence of phytochemicals, which possess antioxidant properties; they are related mainly to radical-scavenging capacity in chemical assays and positive effects on the endogenous antioxidant system in cell-based and in vivo assays. Considering the increasing number of publications on this topic and the absence of comprehensive and focused review papers on antioxidant potential, this article summarizes the results of studies on the antioxidant properties of Dioscorea spp. and their relation to phytochemicals and health benefits. A comprehensive survey of the published articles has revealed that the majority of studies have been performed with plant tubers (rhizomes, roots), while reports on leaves are rather scarce. In general, leaf extracts demonstrated stronger antioxidant potential than tuber preparations. This may be related to the differences in phytochemical composition: saponins, phenanthrenes and, for some pigment-rich species (purple yams), anthocyanins are important constituents in tubers, while phenolic acids and flavonoids are characteristic phytochemicals in the leaves. The review may assist in explaining ethnopharmacological knowledge on the health benefits of Dioscorea plants and their preparations; moreover, it may foster further studies of poorly investigated species, as well as their wider application in developing new functional foods and nutraceuticals.
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Yamada T, Fujii A, Park K, Furugen C, Takagi A, Ikawa T, Sajiki H. Catalytic Intramolecular Cyclization of Alkynyl Cyclic Acetals via Chemoselective Activation Leading to Phenanthrene Core. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tsuyoshi Yamada
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Akiko Fujii
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Kwihwan Park
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Chikara Furugen
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Akira Takagi
- Laboratory of Bioorganic & Natural Products Chemistry, Kobe Pharmaceutical University, Kobe, Hyogo 658-8558, Japan
| | - Takashi Ikawa
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Hironao Sajiki
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
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Slavova I, Tomova T, Kusovska S, Chukova Y, Argirova M. Phytochemical Constituents and Pharmacological Potential of Tamus communis Rhizomes. Molecules 2022; 27:molecules27061851. [PMID: 35335214 PMCID: PMC8949886 DOI: 10.3390/molecules27061851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/25/2022] [Accepted: 03/09/2022] [Indexed: 11/16/2022] Open
Abstract
Tamus communis L. is a plant distributed in a number of geographical areas whose rhizome has been used for centuries as an anti-inflammatory and analgesic remedy. This review aims to summarize the current knowledge of the chemical composition and biological activity of the extracts or individual compounds of the rhizome. The data for the principal secondary metabolites are systematized: sterols, steroidal saponins, phenanthrenes, dihydrophenanthrenes, etc. Results of biological tests for anti-inflammatory action, cytotoxicity, anticholinesterase effect, and xanthine oxidase inhibition are presented. Some open questions about the therapeutic properties of the plant are also addressed.
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Britt LH, Zhao Z, Murphy GK. Award Lecture Paper: Hypervalent Iodine-Mediated Oxidative Alkene Arylation: A Thorough Analysis. CAN J CHEM 2022. [DOI: 10.1139/cjc-2022-0032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A hypervalent iodine-mediated, oxidative alkene arylation reaction has been developed. Both Koser’s reagent (PhI(OH)OTs) and (diacetoxyiodo)toluene (TolI(OAc)<sub>2</sub>) were equally viable as oxidants, which reacted with ortho-vinylbiphenyl derivatives to produce tri-, tetra- and pentacyclic polycyclic aromatic hydrocarbons (PAHs) in yields up to 97%. Comparison of this stoichiometric reaction with a previously-reported catalytic process showed that these protocols were largely complementary, and that they likely operate via the same general mechanistic sequence involving vinyliodonium salts decomposing into vinylene phenonium ions. Various mechanistic control experiments were conducted, which ruled out epoxides as intermediates, and which showed that E- and Z- alkene geometry in 10-substituted ortho-vinylbiphenyls had no impact on the ensuing isomeric product distributions. These experiments strongly supported the formation of E-vinyliodonium ions as initial reaction intermediates, and while the occurrence of 1,2-phenyl shift products was a common phenomenon, we concluded that alkyl substitution on the ortho-vinylbiphenyl was a requirement for this alternate pathway to occur.
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Affiliation(s)
| | - Zhensheng Zhao
- University of Waterloo, Chemistry, Waterloo, Ontario, Canada,
| | - Graham Kevin Murphy
- University of Waterloo, Chemistry, C2-367 Department of Chemistry, 200 University Ave W., Waterloo, Ontario, Canada, N2L3G1,
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Nanjala C, Ren J, Mutie FM, Waswa EN, Mutinda ES, Odago WO, Mutungi MM, Hu GW. Ethnobotany, phytochemistry, pharmacology, and conservation of the genus Calanthe R. Br. (Orchidaceae). JOURNAL OF ETHNOPHARMACOLOGY 2022; 285:114822. [PMID: 34774685 DOI: 10.1016/j.jep.2021.114822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 10/24/2021] [Accepted: 11/05/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The Genus Calanthe (family Orchidaceae) consists of more than 207 species distributed in both tropical and subtropical regions. In traditional medicine, Calanthe species provide remedies against various conditions such as arthritis, rheumatism, traumatic injuries, snake-bites, abdominal discomfort, nose bleeding, common colds, ulcers, chronic coughs, and others. Some species are also used as aphrodisiacs, tonics, and as pain relievers on joints and toothaches. AIM OF THE REVIEW This review provides comprehensive information on the herbal uses, chemical components, pharmacological activities, and conservation of Calanthe, which might be useful in the future development of potent herbal medicines and facilitate the enactment of better conservation strategies. MATERIALS AND METHODS Relevant information was obtained from online databases including SCI-Finder, Google Scholar, Web of Science, Science Direct, PubMed, Springer, IOP Science, and other web sources such as PubChem, The Plant List, and World Flora Online. Books, Ph.D. and MSc dissertations were used for unpublished literature. Information from Chinese literature was obtained from the CNKI database. RESULTS In total, 19 species of the genus Calanthe have been reported to be used in traditional medicine in different countries of Asia. A total of 265 chemical compounds from different chemical classes including, alkaloids, terpenoids, phenolic compounds and phenolic derivatives, phenanthrenes, and others, have been identified from Calanthe species. Calanquinone A isolated from C. arisanensis has been reported to exhibit antitumor activity against six malignant cell lines. Other bioactive compounds from Calanthe with pharmacological activity include phenanthrenes, phenanthrenequinones, 6'-O-β-D-apiofuranosylindican, 4H-Pyran-4one, 2, 3-dihydro-3,5 dihydroxy-6-methyl, and calanthoside. These compounds exhibit valuable biological properties such as hair restoration, anticancer activity, anti-inflammatory and antiarthritic activity, antidiabetic and hepatoprotective potency, antiplatelet aggregation action, and antibacterial and antifungal activities. Some Calanthe species, including C. ecallosa and C. yuana, are endangered in the IUCN red list. The high risk of extinction is attributed to illegal trade and unsustainable harvesting and utilization. CONCLUSIONS This review summarizes the herbal uses, chemical components, biological activity, and conservation of Calanthe. The pharmacological studies on this genus are limited; thus, extensive research on the toxicology, pharmaceutical standardization, and mechanism of action of the isolated bioactive compounds are needed. Since some species of Calanthe are listed as endangered, stringent guidelines on trade, collection, and sustainable utilization of medicinal orchids should be set up to facilitate the conservation of these species.
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Affiliation(s)
- Consolata Nanjala
- CAS Key Laboratory of Plant Germplasm and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China; Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, 430074, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Jing Ren
- College of Life Sciences, Hunan Normal University, Changsha, 410081, China.
| | - Fredrick Munyao Mutie
- CAS Key Laboratory of Plant Germplasm and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China; Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, 430074, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Emmanuel Nyongesa Waswa
- CAS Key Laboratory of Plant Germplasm and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China; Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, 430074, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Elizabeth Syowai Mutinda
- CAS Key Laboratory of Plant Germplasm and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China; Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, 430074, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Wyclif Ochieng Odago
- CAS Key Laboratory of Plant Germplasm and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China; Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, 430074, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Moses Mutuse Mutungi
- CAS Key Laboratory of Plant Germplasm and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China; Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, 430074, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Guang-Wan Hu
- CAS Key Laboratory of Plant Germplasm and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China; Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, 430074, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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Nanjala C, Ren J, Mutie FM, Waswa EN, Mutinda ES, Odago WO, Mutungi MM, Hu GW. Ethnobotany, phytochemistry, pharmacology, and conservation of the genus Calanthe R. Br. (Orchidaceae). JOURNAL OF ETHNOPHARMACOLOGY 2022; 285:114822. [DOI: https:/doi.org/10.1016/j.jep.2021.114822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
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A Multi-Target and Multi-Channel Mechanism of Action for Jiawei Yinhuo Tang in the Treatment of Social Communication Disorders in Autism: Network Pharmacology and Molecular Docking Studies. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:4093138. [PMID: 35178102 PMCID: PMC8846994 DOI: 10.1155/2022/4093138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/22/2021] [Accepted: 01/03/2022] [Indexed: 12/18/2022]
Abstract
Background Autism spectrum disorder (ASD) is a highly heterogeneous neurodevelopmental disorder with complex pathogenesis. Currently, the pathogenesis of ASD is not fully understood. Moreover, current treatments do not effectively alleviate the primary symptoms of ASD social disorder (SCDA). Jiawei Yinhuo Tang (JWYHT) is an improved version of the classic prescription Yinhuo Tang. Although this medication has been shown to improve social behavior in ASD patients, the mechanism by which it works remains unknown. Methods In this study, network pharmacology bioinformatics analysis was used to identify the key targets, biological functions, and signal pathways of JWYHT in SCDA. Then, molecular docking and molecular dynamic simulation were used to validate the activity and stability of the active ingredient and the target protein during the binding process. Results The analysis identified 157 key targets and 9 core targets of JWYHT (including proto-oncogene (FOS), caspase 3 (CASP3), mitogen-activated protein kinase-3 (MAPK3), interleukin-6 (IL6), mitogen-activated protein kinase-1 (MAPK1), tumor necrosis factor (TNF), mitogen-activated protein kinase-8 (MAPK8), AKT serine/threonine kinase 1 (AKT1), and 5-hydroxytryptamine receptor 1B (5HT1B)) in SCDA. In addition, the Kyoto Encyclopedia of Gene and Genome results, as well as the staggering network analyses, revealed 20 biological processes and 20 signal pathways targeted by JWYHT in SCDA. Finally, molecular docking analysis was used to determine the binding activity of the main active components of JWYHT to the key targets. The binding activity and stability of methyl arachidonate and MAPK8 were demonstrated using molecular dynamics simulation. Conclusion This study demonstrates that JWYHT regulates neuronal development, synaptic transmission, intestinal and cerebral inflammatory response, and other processes in SCDA.
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Li M, Trapika IGSC, Tang SYS, Cho JL, Qi Y, Li CG, Li Y, Yao M, Yang D, Liu B, Li R, Yang P, Ma G, Ren P, Huang X, Xie D, Chen S, Li M, Yang L, Leng P, Huang Y, Li GQ. Mechanisms and Active Compounds Polysaccharides and Bibenzyls of Medicinal Dendrobiums for Diabetes Management. Front Nutr 2022; 8:811870. [PMID: 35155528 PMCID: PMC8832146 DOI: 10.3389/fnut.2021.811870] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 12/21/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Medicinal dendrobiums are used popularly in traditional Chinese medicine for the treatment of diabetes, while their active compounds and mechanism remain unclear. This review aimed to evaluate the mechanism and active compounds of medicinal dendrobiums in diabetes management through a systematic approach. METHODS A systematic approach was conducted to search for the mechanism and active phytochemicals in Dendrobium responsible for anti-diabetic actions using databases PubMed, Embase, and SciFinder. RESULTS Current literature indicates polysaccharides, bibenzyls, phenanthrene, and alkaloids are commonly isolated in Dendrobium genusin which polysaccharides and bibenzyls are most aboundant. Many animal studies have shown that polysaccharides from the species of Dendrobium provide with antidiabetic effects by lowering glucose level and reversing chronic inflammation of T2DM taken orally at 200 mg/kg. Dendrobium polysaccharides protect pancreatic β-cell dysfunction and insulin resistance in liver. Dendrobium polysaccharides up-regulate the abundance of short-chain fatty acid to stimulate GLP-1 secretion through gut microbiota. Bibenzyls also have great potency to inhibit the progression of the chronic inflammation in cellular studies. CONCLUSION Polysaccharides and bibenzyls are the major active compounds in medicinal dendrobiums for diabetic management through the mechanisms of lowering glucose level and reversing chronic inflammation of T2DM by modulating pancreatic β-cell dysfunction and insulin resistance in liver as a result from gut microbita regulation.
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Affiliation(s)
- Mingjian Li
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - I. Gusti Surya Chandra Trapika
- Faculty of Medicine and Health, The University of Sydney School of Pharmacy, The University of Sydney, Sydney, NSW, Australia
- Faculty of Medicine, Department of Pharmacology and Therapy, Udayana University, Jimbaran, Indonesia
| | - Suet Yee Sara Tang
- Faculty of Medicine and Health, The University of Sydney School of Pharmacy, The University of Sydney, Sydney, NSW, Australia
| | - Jun-Lae Cho
- Faculty of Medicine and Health, The University of Sydney School of Pharmacy, The University of Sydney, Sydney, NSW, Australia
- Faculty of Engineering and Information Technologies, Centre for Advanced Food Enginomics, The University of Sydney, Sydney, NSW, Australia
| | - Yanfei Qi
- Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, Sydney, NSW, Australia
| | - Chun Guang Li
- NICM Health Research Institute, Western Sydney University, Penrith, NSW, Australia
| | - Yujuan Li
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Meicun Yao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Depo Yang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Bowen Liu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Rong Li
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ping Yang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Guoyi Ma
- The National Center for Natural Products Research, The University of Mississippi, Oxford, MS, United States
| | - Ping Ren
- Institute of TCM-related Comorbidity, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xi Huang
- Institute of TCM-related Comorbidity, Nanjing University of Chinese Medicine, Nanjing, China
| | - Deshan Xie
- Chengdu Tepu Biotech Co., Ltd., Chengdu, China
| | | | - Min Li
- College of Fundamental Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Lan Yang
- College of Fundamental Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ping Leng
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yong Huang
- Chengdu Tepu Biotech Co., Ltd., Chengdu, China
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - George Q. Li
- Faculty of Medicine and Health, The University of Sydney School of Pharmacy, The University of Sydney, Sydney, NSW, Australia
- NICM Health Research Institute, Western Sydney University, Penrith, NSW, Australia
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Lim JS, Oh J, Yun HS, Lee JS, Hahn D, Kim JS. Anti-neuroinflammatory activity of 6,7-dihydroxy-2,4-dimethoxy phenanthrene isolated from Dioscorea batatas Decne partly through suppressing the p38 MAPK/NF-κB pathway in BV2 microglial cells. JOURNAL OF ETHNOPHARMACOLOGY 2022; 282:114633. [PMID: 34520827 DOI: 10.1016/j.jep.2021.114633] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 09/02/2021] [Accepted: 09/09/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The rhizome of Dioscorea batatas Decne (called Chinses yam) widely distributed in East Asian countries including China, Japan, Korea and Taiwan has long been used in oriental folk medicine owing to its tonic, antitussive, expectorant and anti-ulcerative effects. It has been reported to have anti-inflammatory, antioxidative, cholesterol-lowering, anticholinesterase, growth hormone-releasing, antifungal and immune cell-stimulating activities. AIM OF THE STUDY Neuroinflammation caused by activated microglia contributes to neuronal dysfunction and neurodegeneration. In the present study, the anti-neuroinflammatory activity of 6,7-dihydroxy-2,4-dimethoxy phenanthrene (DHDMP), a phenanthrene compound isolated from Dioscorea batatas Decne, was examined in microglial and neuronal cells. MATERIALS AND METHODS A natural phenanthrene compound, DHDMP, was isolated from the peel of Dioscorea batatas Decne. The anti-neuroinflammatory capability of the compound was examined using the co-culture system of BV2 murine microglial and HT22 murine neuronal cell lines. The expression levels of inflammatory mediators and cytoprotective proteins in the cells were quantified by enzyme-linked immunosorbent assay and Western blot analysis. RESULTS DHDMP at the concentrations of ≤1 μg/mL did not exhibit a cytotoxic effect for BV2 and HT22 cells. Rather DHDMP effectively restored the growth rate of HT22 cells, which was reduced by co-culture with lipopolysaccharide (LPS)-treated BV2 cells. DHDMP significantly decreased the production of proinflammatory mediators, such as nitric oxide, tumor necrosis factor-α, interleukin-6, inducible nitric oxide synthase, and cyclooxygenase-2 in BV2 cells. Moreover, DHDMP strongly inhibited the nuclear translocation of nuclear factor κB (NF-κB) and phosphorylation of p38 mitogen-activated protein kinase (MAPK) in BV2 cells. The compound did not affect the levels and phosphorylation of ERK and JNK. Concurrently, DHDMP increased the expression of heme oxygenase-1 (HO-1), an inducible cytoprotective enzyme, in HT22 cells. CONCLUSIONS Our findings indicate that DHDMP effectively dampened LPS-mediated inflammatory responses in BV2 microglial cells by suppressing transcriptional activity of NF-κB and its downstream mediators and contributed to HT22 neuronal cell survival. This study provides insight into the therapeutic potential of DHDMP for inflammation-related neurological diseases.
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Affiliation(s)
- Ji Sun Lim
- Institute of Agricultural Science and Technology, Kyungpook National University, Daegu, 41566, South Korea.
| | - Jisun Oh
- Institute of Agricultural Science and Technology, Kyungpook National University, Daegu, 41566, South Korea.
| | - Hyun Seok Yun
- School of Food Science and Biotechnology, Kyungpook National University, Daegu, 41566, South Korea.
| | - Jeong Soon Lee
- Forest Resources Development Institute of Gyeongsangbuk-do, Andong, 36605, South Korea.
| | - Dongyup Hahn
- School of Food Science and Biotechnology, Kyungpook National University, Daegu, 41566, South Korea.
| | - Jong-Sang Kim
- Institute of Agricultural Science and Technology, Kyungpook National University, Daegu, 41566, South Korea; School of Food Science and Biotechnology, Kyungpook National University, Daegu, 41566, South Korea.
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Seth K. Recent progress in rare-earth metal-catalyzed sp 2 and sp 3 C–H functionalization to construct C–C and C–heteroelement bonds. Org Chem Front 2022. [DOI: 10.1039/d1qo01859k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The review presents rare-earth metal-catalyzed C(sp2/sp3)–H functionalization accessing C–C/C–heteroatom bonds and olefin (co)polymerization, highlighting substrate scope, mechanistic realization, and origin of site-, enantio-/diastereo-selectivity.
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Affiliation(s)
- Kapileswar Seth
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) – Guwahati, Sila Katamur, Changsari, Kamrup 781101, Assam, India
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Hampejsová R, Berka M, Berková V, Jersáková J, Domkářová J, von Rundstedt F, Frary A, Saiz-Fernández I, Brzobohatý B, Černý M. Interaction With Fungi Promotes the Accumulation of Specific Defense Molecules in Orchid Tubers and May Increase the Value of Tubers for Biotechnological and Medicinal Applications: The Case Study of Interaction Between Dactylorhiza sp. and Tulasnella calospora. FRONTIERS IN PLANT SCIENCE 2022; 13:757852. [PMID: 35845638 PMCID: PMC9282861 DOI: 10.3389/fpls.2022.757852] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 06/13/2022] [Indexed: 05/04/2023]
Abstract
Terrestrial orchids can form tubers, organs modified to store energy reserves. Tubers are an attractive source of nutrients, and salep, a flour made from dried orchid tubers, is the source of traditional beverages. Tubers also contain valuable secondary metabolites and are used in traditional medicine. The extensive harvest of wild orchids is endangering their populations in nature; however, orchids can be cultivated and tubers mass-produced. This work illustrates the importance of plant-fungus interaction in shaping the content of orchid tubers in vitro. Orchid plants of Dactylorhiza sp. grown in asymbiotic culture were inoculated with a fungal isolate from Tulasnella calospora group and, after 3 months of co-cultivation, tubers were analyzed. The fungus adopted the saprotrophic mode of life, but no visible differences in the morphology and biomass of the tubers were detected compared to the mock-treated plants. To elucidate the mechanisms protecting the tubers against fungal infestation, proteome, metabolome, and lipidome of tubers were analyzed. In total, 1,526, 174, and 108 proteins, metabolites, and lipids were quantified, respectively, providing a detailed snapshot of the molecular process underlying plant-microbe interaction. The observed changes at the molecular level showed that the tubers of inoculated plants accumulated significantly higher amounts of antifungal compounds, including phenolics, alkaloid Calystegine B2, and dihydrophenanthrenes. The promoted antimicrobial effects were validated by observing transient inhibition of Phytophthora cactorum growth. The integration of omics data highlighted the promotion of flavonoid biosynthesis, the increase in the formation of lipid droplets and associated production of oxylipins, and the accumulation of auxin in response to T. calospora. Taken together, these results provide the first insights into the molecular mechanisms of defense priming in orchid tubers and highlight the possible use of fungal interactors in biotechnology for the production of orchid secondary metabolites.
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Affiliation(s)
- Romana Hampejsová
- Potato Research Institute, Ltd., Havlíčkův Brod, Czechia
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czechia
| | - Miroslav Berka
- Department of Molecular Biology and Radiobiology, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
| | - Veronika Berková
- Department of Molecular Biology and Radiobiology, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
| | - Jana Jersáková
- Department of Biology of Ecosystems, Faculty of Science, University of South Bohemia, České Budějovice, Czechia
| | | | | | - Anne Frary
- Department of Molecular Biology and Genetics, Izmir Institute of Technology, Urla, Turkey
| | - Iñigo Saiz-Fernández
- Department of Molecular Biology and Radiobiology, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
| | - Břetislav Brzobohatý
- Department of Molecular Biology and Radiobiology, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
| | - Martin Černý
- Department of Molecular Biology and Radiobiology, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
- *Correspondence: Martin Černý,
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48
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Systematical study on the electronic properties of monoazaphenanthrene compounds by theoretical calculations and experimental observations. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2021.111370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Li JL, Niu X, Song YF, Du JL, Shen S, Yang XL. Photocatalytic synthesis of 10-phenanthrenols via intramolecular cycloaromatization under oxidant-free conditions. Org Chem Front 2022. [DOI: 10.1039/d2qo01085b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel tandem photocycloaddition/dehydrogenative aromatization with hydrogen evolution of ortho biaryl-appended 1,3-dicarbonyl compounds for the synthesis of 10-phenanthrenol via cobaloxime catalysis is disclosed.
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Affiliation(s)
- Jun-Li Li
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education and College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R. China
| | - Xiaoying Niu
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education and College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R. China
- Postdoctoral Research Station of Chemistry Affiliated College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R. China
| | - Yi-Fan Song
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education and College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R. China
| | - Jian-Long Du
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education and College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R. China
| | - Shigang Shen
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education and College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R. China
| | - Xiu-Long Yang
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education and College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R. China
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50
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Evaluation of antimicrobial activity of the extract of Streptomyces euryhalinus isolated from the Indian Sundarbans. Arch Microbiol 2021; 204:34. [PMID: 34927220 DOI: 10.1007/s00203-021-02698-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/01/2021] [Accepted: 11/08/2021] [Indexed: 10/19/2022]
Abstract
The discovery of new antimicrobials is the prime target in the fight against antimicrobial resistance. The continuous search for new lead compounds from bacteria of untapped and extreme ecosystems such as mangroves is currently being undertaken. This study describes the metabolite profiling of the Streptomyces euryhalinus culture extract. Previously, Streptomyces euryhalinus was isolated from the mangrove forest of Indian Sundarbans as a novel microorganism. The antimicrobial mechanism of action of Streptomyces euryhalinus culture extract against bacteria and fungi has been analyzed in this study. The gas chromatography-mass spectrometry profile of the ethyl acetate extract bacterial culture displayed the presence of several bioactive compounds with antibacterial, antifungal and antioxidant properties. The bacterial extract showed significant antimicrobial activity in terms of zone of inhibition, minimum inhibitory concentration, minimum bactericidal concentration, and minimum fungicidal concentration. Moreover, substantial capacity to alter or damage the inner membrane as well as the outer membrane of the gram-positive and gram-negative bacteria was exhibited by the bacterial extract. This membrane alteration or damaging potential of the extract is the mechanism of action. Biofilm formation inhibition property of the extract also signified its antimicrobial action, and possible use against resistant bacteria. The extract has shown notable activity against the virulence factors like prevention of hemolysis in bacteria and inhibition of secreted aspartyl proteinase in fungi. These functions of the bacterial extract have revealed the extent of its action in the prevention of infection by terminating the secretory virulence factors and by damaging the tissue.
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