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Broni E, Striegel A, Ashley C, Sakyi PO, Peracha S, Velazquez M, Bebla K, Sodhi M, Kwofie SK, Ademokunwa A, Khan S, Miller WA. Molecular Docking and Dynamics Simulation Studies Predict Potential Anti-ADAR2 Inhibitors: Implications for the Treatment of Cancer, Neurological, Immunological and Infectious Diseases. Int J Mol Sci 2023; 24:ijms24076795. [PMID: 37047766 PMCID: PMC10095294 DOI: 10.3390/ijms24076795] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/01/2023] [Accepted: 04/04/2023] [Indexed: 04/08/2023] Open
Abstract
Altered RNA editing has been linked to several neurodevelopmental disorders, including autism spectrum disorder (ASD) and intellectual disability, in addition to depression, schizophrenia, some cancers, viral infections and autoimmune disorders. The human ADAR2 is a potential therapeutic target for managing these various disorders due to its crucial role in adenosine to inosine editing. This study applied consensus scoring to rank potential ADAR2 inhibitors after performing molecular docking with AutoDock Vina and Glide (Maestro), using a library of 35,161 compounds obtained from traditional Chinese medicine. A total of 47 compounds were predicted to be good binders of the human ADAR2 and had insignificant toxicity concerns. Molecular dynamics (MD) simulations, including the molecular mechanics Poisson–Boltzmann surface area (MM/PBSA) procedure, also emphasized the binding of the shortlisted compounds. The potential compounds had plausible binding free energies ranging from −81.304 to −1068.26 kJ/mol from the MM/PBSA calculations. ZINC000085511995, a naphthoquinone had more negative binding free energy (−1068.26 kJ/mol) than inositol hexakisphosphate (IHP) [−873.873 kJ/mol], an agonist and a strong binder of ADAR2. The potential displacement of IHP by ZINC000085511995 in the IHP binding site of ADAR2 could be explored for possible deactivation of ADAR2. Bayesian-based biological activity prediction corroborates the neuropharmacological, antineoplastic and antiviral activity of the potential lead compounds. All the potential lead compounds, except ZINC000014612330 and ZINC000013462928, were predicted to be inhibitors of various deaminases. The potential lead compounds also had probability of activity (Pa) > 0.442 and probability of inactivity (Pi) < 0.116 values for treating acute neurologic disorders, except for ZINC000085996580 and ZINC000013462928. Pursuing these compounds for their anti-ADAR2 activities holds a promising future, especially against neurological disorders, some cancers and viral infections caused by RNA viruses. Molecular interaction, hydrogen bond and per-residue decomposition analyses predicted Arg400, Arg401, Lys519, Trp687, Glu689, and Lys690 as hot-spot residues in the ADAR2 IHP binding site. Most of the top compounds were observed to have naphthoquinone, indole, furanocoumarin or benzofuran moieties. Serotonin and tryptophan, which are beneficial in digestive regulation, improving sleep cycle and mood, are indole derivatives. These chemical series may have the potential to treat neurological disorders, prion diseases, some cancers, specific viral infections, metabolic disorders and eating disorders through the disruption of ADAR2 pathways. A total of nine potential lead compounds were shortlisted as plausible modulators of ADAR2.
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Affiliation(s)
- Emmanuel Broni
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL 60153, USA
| | - Andrew Striegel
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL 60153, USA
- Department of Chemical and Biochemistry, College of Science, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Carolyn Ashley
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL 60153, USA
| | - Patrick O. Sakyi
- Department of Chemistry, School of Physical and Mathematical Sciences, College of Basic and Applied Sciences, University of Ghana, Legon, Accra P.O. Box LG 56, Ghana
- Department of Chemical Sciences, School of Sciences, University of Energy and Natural Resources, Sunyani P.O. Box 214, Ghana
| | - Saqib Peracha
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL 60153, USA
| | - Miriam Velazquez
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL 60153, USA
- Department of Molecular Pharmacology & Neuroscience, Loyola University Medical Center, Loyola University Chicago, Maywood, IL 60153, USA
| | - Kristeen Bebla
- Department of Molecular Pharmacology & Neuroscience, Loyola University Medical Center, Loyola University Chicago, Maywood, IL 60153, USA
| | - Monsheel Sodhi
- Department of Molecular Pharmacology & Neuroscience, Loyola University Medical Center, Loyola University Chicago, Maywood, IL 60153, USA
| | - Samuel K. Kwofie
- Department of Biomedical Engineering, School of Engineering Sciences, College of Basic & Applied Sciences, University of Ghana, Legon, Accra P.O. Box LG 77, Ghana
- Department of Biochemistry, Cell and Molecular Biology, West African Centre for Cell Biology of Infectious Pathogens, College of Basic and Applied Sciences, University of Ghana, Accra P.O. Box LG 54, Ghana
| | - Adesanya Ademokunwa
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL 60153, USA
- Department of Cognitive and Behavioral Neuroscience, Loyola University Chicago, Chicago, IL 60660, USA
| | - Sufia Khan
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL 60153, USA
- Department of Biology, Loyola University Chicago, Chicago, IL 60660, USA
| | - Whelton A. Miller
- Department of Medicine, Loyola University Medical Center, Loyola University Chicago, Maywood, IL 60153, USA
- Department of Molecular Pharmacology & Neuroscience, Loyola University Medical Center, Loyola University Chicago, Maywood, IL 60153, USA
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Kang B, Ikeda K. 4-Dimethylaminopyridine (DMAP), A Superior Mediator for Morita-Balylis-Hillman Reaction-Triggered Annulative Condensation of Salicylaldehydes and Acrylonitrile to Form 3-Cyano-2H-chromenes. Chem Pharm Bull (Tokyo) 2023; 71:318-325. [PMID: 36805528 DOI: 10.1248/cpb.c23-00068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
We unveiled superior base mediators for the annulative condensation of salicylaldehydes and acrylonitrile to give 3-cyano-2H-chromenes, which has been mediated only by 1,4-diazabicyclo[2.2.2]octane (DABCO) over the past two decades. The reactions were most efficiently mediated by 4-dimethylaminopyridine (DMAP), which yielded 3-cyano-2H-chromenes in higher yields than DABCO in most cases. We also confirmed that the reaction remained high yielding in a decagram-scale experiment with a catalytic amount of DMAP. The utility of this reaction was also exemplified by derivatization of an obtained 3-cyano-2H-chromene into a known 2H-chromene-3-carboxylic acid, which was previously synthesized with a non-readily available reagent.
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Affiliation(s)
- Bubwoong Kang
- Graduate School of Agricultural Science, Kobe University
| | - Kaede Ikeda
- Graduate School of Agricultural Science, Kobe University
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Tian MR, Du K, Zhi YL, Xue GM, Zhao ZZ, Si YY, Chen H, Sun YJ, Feng WS, Ma JL. LSD1 inhibitors from the roots of Pueraria lobata. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2023; 25:44-52. [PMID: 35113741 DOI: 10.1080/10286020.2022.2032677] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/13/2022] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
One new 6a,11a-dehydropterocarpan derivative, 6-O-methyl-anhydrotuberosin (1), one new 6a-hydroxypterocarpan, (6aR,11aR,11bR)-hydroxytuberosone (7), and seven known compounds including two 6a,11a-dehydropterocarpans (2 and 4), two coumestans (3 and 5), one isoflavonoid (6) and two other phenolic compounds (8 and 9) were isolated from the roots of Pueraria lobata. The structures of the isolated compounds were elucidated with spectroscopic and spectrometric methods (1 D and 2DNMR, HRESIMS). Compounds 1, 2, 4-5 showed potent LSD1 inhibitory activities with IC50 values ranging from 1.73 to 4.99 μM. Furthermore, compound 2 showed potent cytotoxicity against gastric cancer cell lines MGC-803 and BGC-823, and lung cancer cell lines H1299 and H460.
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Affiliation(s)
- Meng-Ru Tian
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Kun Du
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China
- The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou 450000, China
| | - Yan-Le Zhi
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Gui-Min Xue
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Zhen-Zhu Zhao
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Ying-Ying Si
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Hui Chen
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Yan-Jun Sun
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Wei-Sheng Feng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Jin-Lian Ma
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China
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Polyphenolic Compounds from Lespedeza bicolor Protect Neuronal Cells from Oxidative Stress. Antioxidants (Basel) 2022; 11:antiox11040709. [PMID: 35453394 PMCID: PMC9025851 DOI: 10.3390/antiox11040709] [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: 03/06/2022] [Revised: 03/29/2022] [Accepted: 04/01/2022] [Indexed: 12/10/2022] Open
Abstract
Pterocarpans and related polyphenolics are known as promising neuroprotective agents. We used models of rotenone-, paraquat-, and 6-hydroxydopamine-induced neurotoxicity to study the neuroprotective activity of polyphenolic compounds from Lespedeza bicolor and their effects on mitochondrial membrane potential. We isolated 11 polyphenolic compounds: a novel coumestan lespebicoumestan A (10) and a novel stilbenoid 5’-isoprenylbicoloketon (11) as well as three previously known pterocarpans, two pterocarpens, one coumestan, one stilbenoid, and a dimeric flavonoid. Pterocarpans 3 and 6, stilbenoid 5, and dimeric flavonoid 8 significantly increased the percentage of living cells after treatment with paraquat (PQ), but only pterocarpan 6 slightly decreased the ROS level in PQ-treated cells. Pterocarpan 3 and stilbenoid 5 were shown to effectively increase mitochondrial membrane potential in PQ-treated cells. We showed that pterocarpans 2 and 3, containing a 3’-methyl-3’-isohexenylpyran ring; pterocarpens 4 and 9, with a double bond between C-6a and C-11a; and coumestan 10 significantly increased the percentage of living cells by decreasing ROS levels in 6-OHDA-treated cells, which is in accordance with their rather high activity in DPPH• and FRAP tests. Compounds 9 and 10 effectively increased the percentage of living cells after treatment with rotenone but did not significantly decrease ROS levels.
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Kang B, Oe T, Shimizu Y, Takikawa H. Syntheses of three 8-methoxyisoflavans from newly developed 7-benzyloxy-3-chloro-8-methoxy-2H-chromene as the precursor. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Lee DG, Lee JS, Quilantang NG, Jacinto SD, Lee S. Determination of Afzelin and Astragalin from Lespedeza cuneata on Aldose Reductase Inhibition. J Chromatogr Sci 2021; 59:381-387. [PMID: 33420504 DOI: 10.1093/chromsci/bmaa127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Indexed: 11/14/2022]
Abstract
The bioactive chemicals in L. cuneata were investigated by repeated column chromatography and their effect on aldose reductase (AR), obtained from rat lenses, was examined. Results showed that the ethyl acetate and n-butanol fractions of L. cuneata exhibited potential inhibitory effect against AR with IC50 values of 0.57 and 0.49 μg/mL, respectively. Phytochemical analysis of these two fractions resulted in the isolation of five flavonoids namely, acacetin (1), afzelin (2), astragalin (3), kaempferol (4) and scutellarein 7-O-glucoside (5). The AR inhibitory effect of compounds 1-5 was explored; compounds 2, 3 and 5 showed potential AR-inhibitory effects with IC50 values of 2.20, 1.91 and 12.87 μM, respectively. Quantitative analysis of afzelin (2) and astragalin (3) in L. cuneata by high performance liquid chromatography with ultraviolet detection revealed its content to be 0.722-11.828 and 2.054-7.006 mg/g, respectively. Overall, this study showed that L. cuneata is rich in flavonoids with promising AR-inhibitory activities, which can be utilized for the development of natural therapies for treating and managing diabetic complications.
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Affiliation(s)
- Dong Gu Lee
- BET Research Institute, Chung-Ang University, Seodongdaero, Daedukmyun, Anseong 17546, Republic of Korea
| | - Ju Sung Lee
- Department of Plant Science and Technology, Chung-Ang University, Seodongdaero, Daedukmyun, Anseong 17546, Republic of Korea
| | - Norman G Quilantang
- Department of Plant Science and Technology, Chung-Ang University, Seodongdaero, Daedukmyun, Anseong 17546, Republic of Korea
| | - Sonia D Jacinto
- Institute of Biology, University of the Philippines, Regidor St., Diliman, Quezon City 1101, Philippines
| | - Sanghyun Lee
- Department of Plant Science and Technology, Chung-Ang University, Seodongdaero, Daedukmyun, Anseong 17546, Republic of Korea
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Basuli S, Chinnabattigalla S, Gupta K, Gedu S. A concise route towards isoflavans. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Suchand Basuli
- Department of Chemistry Indian Institute of Technology Hyderabad, Kandi Sangareddy India
| | | | - Kshitija Gupta
- Department of Chemistry Indian Institute of Technology Hyderabad, Kandi Sangareddy India
| | - Satyanarayana Gedu
- Department of Chemistry Indian Institute of Technology Hyderabad, Kandi Sangareddy India
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Lespedeza bicolor Extract Ameliorated Renal Inflammation by Regulation of NLRP3 Inflammasome-Associated Hyperinflammation in Type 2 Diabetic Mice. Antioxidants (Basel) 2020; 9:antiox9020148. [PMID: 32050658 PMCID: PMC7071116 DOI: 10.3390/antiox9020148] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/29/2020] [Accepted: 02/05/2020] [Indexed: 02/06/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder characterized by hyperglycemia. The chronic hyperglycemic condition causes hyperinflammation via activation of nucleotide-binding oligomerization domain-like pyrin domain containing receptor 3 (NLRP3) inflammasome and abnormally leads to morphological and functional changes in kidney. A previous study showed a protective effect of Lespedeza bicolor extract (LBE) on endothelial dysfunction induced by methylglyoxal glucotoxicity. We aimed to investigate whether LBE ameliorated renal damage through regulation of NLRP3 inflammasome-dependent hyper-inflammation in T2DM mice. After T2DM induction by a high fat diet and low dose of streptozotocin (30 mg/kg), the mice were administered with different dosages of LBE (100 or 250 mg/kg/day) by gavage for 12 weeks. LBE supplementation ameliorated kidney dysfunction demonstrated by urine albumin-creatinine at a low dose and plasma creatinine, blood urea nitrogen (BUN), and glomerular hypertrophy at a high dose. Furthermore, a high dose of LBE supplementation significantly attenuated renal hyper-inflammation associated with NLRP3 inflammasome and oxidative stress related to nuclear factor erythroid 2-related factor 2 (Nrf-2) in T2DM mice. Meanwhile, a low dose of LBE supplementation up-regulated energy metabolism demonstrated by phosphorylation of adenosine monophosphate kinase (AMPK) and Sirtuin (SIRT)-1 in T2DM mice. In conclusion, the current study suggested that LBE, in particular, at a high dose could be used as a beneficial therapeutic for hyperglycemia-induced renal damage in T2DM.
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Yan W, Yang J, Tang H, Xue L, Chen K, Wang L, Zhao M, Tang M, Peng A, Long C, Chen X, Ye H, Chen L. Flavonoids from the stems of Millettia pachyloba Drake mediate cytotoxic activity through apoptosis and autophagy in cancer cells. J Adv Res 2019; 20:117-127. [PMID: 31338224 PMCID: PMC6626068 DOI: 10.1016/j.jare.2019.06.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/18/2019] [Accepted: 06/18/2019] [Indexed: 02/05/2023] Open
Abstract
In this study, systematic separation and subsequent pharmacological activity studies were carried out to identify cytotoxic natural products from the dried stems of Millettia pachyloba Drake. Five previously undescribed isoflavones, pachyvones A-E; one previously undescribed xanthone, pachythone A; and twenty-two known compounds were obtained. The structures of these compounds were assigned on the basis of 1D/2D NMR data and high-resolution electrospray ionization mass spectroscopy analysis. Preliminary activity screening with HeLa and MCF-7 cells showed that ten compounds (3-5, 9, 12, 17-19, 24, and 25) had potential cytotoxicity. Further in-depth activity studies with five cancer cell lines (HeLa, HepG2, MCF-7, Hct116, and MDA-MB-231) and one normal cell line (HUVEC) revealed that these ten compounds showed specific cytotoxicity in cancer cells, with IC50 values ranging from 5 to 40 μM, while they had no effect on normal cell lines. To investigate whether the cytotoxicity of these ten compounds was associated with autophagy, their autophagic effects were evaluated in GFP-LC3-HeLa cells. The results demonstrated that compound 9 (durmillone) significantly induced autophagy in a concentration-dependent manner and had the best activity as an autophagy inducer among all of the compounds. Therefore, compound 9 was selected for further study. The PI/Annexin V double staining assay and Western blotting results revealed that compound 9 also induced obvious apoptosis in HeLa and MCF-7 cells, which suggests that it mediates cytotoxic activity through activation of both apoptosis and autophagy. Taken together, this study identified ten natural cytotoxic products from the dried stems of Millettia pachyloba Drake, of which compound 9 induced apoptosis and autophagy and could be an anticancer drug candidate.
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Affiliation(s)
- Wei Yan
- Lab of Natural Product Drugs and Cancer Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, People’s Republic of China
| | - Jianhong Yang
- Lab of Natural Product Drugs and Cancer Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, People’s Republic of China
| | - Huan Tang
- Lab of Natural Product Drugs and Cancer Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, People’s Republic of China
| | - Linlin Xue
- Lab of Natural Product Drugs and Cancer Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, People’s Republic of China
| | - Kai Chen
- School of Chemical Engineering, Sichuan University, Chengdu 610041, People’s Republic of China
| | - Lun Wang
- School of Chemical Engineering, Sichuan University, Chengdu 610041, People’s Republic of China
| | - Min Zhao
- Lab of Natural Product Drugs and Cancer Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, People’s Republic of China
| | - Minghai Tang
- Lab of Natural Product Drugs and Cancer Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, People’s Republic of China
| | - Aihua Peng
- Lab of Natural Product Drugs and Cancer Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, People’s Republic of China
| | - Chaofeng Long
- Guangdong Zhongsheng Pharmaceutical Co Ltd., Dongguan 440100, People’s Republic of China
| | - Xiaoxin Chen
- Guangdong Zhongsheng Pharmaceutical Co Ltd., Dongguan 440100, People’s Republic of China
| | - Haoyu Ye
- Lab of Natural Product Drugs and Cancer Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, People’s Republic of China
| | - Lijuan Chen
- Lab of Natural Product Drugs and Cancer Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, People’s Republic of China
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Tarbeeva DV, Fedoreyev SA, Veselova MV, Blagodatski AS, Klimenko AM, Kalinovskiy AI, Grigorchuk VP, Berdyshev DV, Gorovoy PG. Cytotoxic polyphenolic compounds from Lespedeza bicolor stem bark. Fitoterapia 2019; 135:64-72. [PMID: 31004693 DOI: 10.1016/j.fitote.2019.04.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/11/2019] [Accepted: 04/13/2019] [Indexed: 01/03/2023]
Abstract
Four new pterocarpans (6aR,11aR)-6a,11a-dihydrolespedezol A2 (2), (6aR,11aR)-2-isoprenyl-6a,11a-dihydrolespedezol A2 (3), (6aR,11aR,3'R)-6a,11a-dihydrolespedezol A3 (4), (6aR,11aR,3'S)-6a,11a-dihydrolespedezol A3 (5) and one new stilbenoid with 1,2-diketone fragment named bicoloketone (6) along with one previously known pterocarpen lespedezol A2 (1) have been isolated from Lespedeza bicolor stem bark using multistage column chromatography on polyamide and silica gel. The structures of the isolated polyphenolic compounds were determined by spectroscopic methods. The absolute configurations of 4 and 5 were determined by comparison of their electronic circular dichroism (ECD) spectra obtained experimentally and the spectra calculated using time-dependent density functional theory (TDDFT). The isolated compounds exhibited a moderate DPPH scavenging effect and ferric reducing power compared to the reference antioxidant quercetin. The cytotoxicity of compounds against three human cancer cell lines, HTB-19, Kyse-30, and HEPG-2, and two normal cell lines, RPE-1 and HEK-293, was tested using the MTT assay. Compound 3 showed the strongest cytotoxic activity against all cell lines (IC50 6.0-19.1 μM) compared with the positive control cisplatin. The other tested compounds possessed moderate cytotoxic activity against cancer cells.
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Affiliation(s)
- Darya V Tarbeeva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Prospect 100-let Vladivostoku 159, Vladivostok, 690022, Russia.
| | - Sergey A Fedoreyev
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Prospect 100-let Vladivostoku 159, Vladivostok, 690022, Russia
| | - Marina V Veselova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Prospect 100-let Vladivostoku 159, Vladivostok, 690022, Russia
| | - Artem S Blagodatski
- Far Eastern Federal University, School of Biomedicine, 10 Ajax Bay, Russky Island, Vladivostok 690920, Russia
| | - Antonina M Klimenko
- Far Eastern Federal University, School of Biomedicine, 10 Ajax Bay, Russky Island, Vladivostok 690920, Russia
| | - Anatoliy I Kalinovskiy
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Prospect 100-let Vladivostoku 159, Vladivostok, 690022, Russia
| | - Valeria P Grigorchuk
- Federal Scientific Center of the East Asia Terrestrial Biodiversity (Institute of Biology and Soil Science), Far Eastern Branch, Russian Academy of Sciences, Prospect 100-let Vladivostoku 159, Vladivostok 690022, Russia
| | - Dmitrii V Berdyshev
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Prospect 100-let Vladivostoku 159, Vladivostok, 690022, Russia
| | - Petr G Gorovoy
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Prospect 100-let Vladivostoku 159, Vladivostok, 690022, Russia
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Mechesso AF, Lee SJ, Park NH, Kim JY, Im ZE, Suh JW, Park SC. Preventive effects of a novel herbal mixture on atopic dermatitis-like skin lesions in BALB/C mice. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 19:25. [PMID: 30658631 PMCID: PMC6339437 DOI: 10.1186/s12906-018-2426-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 12/27/2018] [Indexed: 01/19/2023]
Abstract
BACKGROUND A combination of parts of Cornus officinalis, Rosa multiflora, Lespedeza bicolor, Platycladus orientalis, and Castanea crenata is commonly used for alleviating inflammatory skin disorders. Therefore, this study was carried out to evaluate the in vitro and in vivo preventive effects of a novel herbal formula made from the five plants (C2RLP) against atopic dermatitis in BALB/C mice. METHODS Mice were allocated into five groups (n = 8) including, control (Normal, petrolatum, and betamethasone treated) and treatment groups (treated with 2.5 and 5% C2RLP ointment). Atopic lesion was induced by applying 1-Chloro-2, 4-dinitrobenzene to the dorsal thoracic area of mice. Macroscopical and histological evaluations were performed to determine the effects of treatment on the progress of the skin lesions. The effects of treatment on the production and release of interleukins, interferon -ϒ, nitrite, prostaglandin E2, thymus and activation-receptor chemokine, and β-hexosaminidase were evaluated and comparisons were made between groups. In addition, the chemical compounds present in C2RLP were identified by Liquid Chromatography-Mass Spectrometry. RESULTS Topical application of C2RLP reduced the dermatitis score and suppressed histopathological changes in mice. Treatment significantly reduced (P < 0.05) plasma IL-4 level, the production of nitrite, prostaglandin E2, and thymus and activation-receptor chemokine production. The lipopolysaccharide-induced iNOS-mRNA expression in RAW 264.7 cells was also suppressed by high concentrations of C2RLP. In addition, C2RLP showed an inhibitory effect against DPPH free radical (IC50 = 147.5 μg/ml) and β-hexosaminidase release (IC50 = 179.5 μg/ml). Liquid Chromatography-Mass Spectrometry analysis revealed the presence of various compounds, including loganin, ellagic acid, and kaempferol 3-glucoside. CONCLUSION Down-regulation of T- helper 2 cellular responses and suppression of inflammatory mediators contributed to the protective effects of C2RLP from atopic dermatitis in BALB/C mice.
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Affiliation(s)
- Abraham Fikru Mechesso
- Laboratory of Veterinary Pharmacokinetics and Pharmacodynamics (LVPP), College of Veterinary Medicine, Kyungpook National University, 41566, 80 Daehakro, Bukgu, Daegu, Republic of Korea
| | - Seung-Jin Lee
- Laboratory of Veterinary Pharmacokinetics and Pharmacodynamics (LVPP), College of Veterinary Medicine, Kyungpook National University, 41566, 80 Daehakro, Bukgu, Daegu, Republic of Korea
| | - Na-Hye Park
- Laboratory of Veterinary Pharmacokinetics and Pharmacodynamics (LVPP), College of Veterinary Medicine, Kyungpook National University, 41566, 80 Daehakro, Bukgu, Daegu, Republic of Korea
| | - Jin-Yoon Kim
- Laboratory of Veterinary Pharmacokinetics and Pharmacodynamics (LVPP), College of Veterinary Medicine, Kyungpook National University, 41566, 80 Daehakro, Bukgu, Daegu, Republic of Korea
| | - Zi-Eum Im
- Forest Resources Development Institute of Gyeongsangbuk-do, Andong, Gyeongsangbuk-do 36605 Republic of Korea
| | - Joo-Won Suh
- Center for Nutraceutical and Pharmaceutical Materials, Division of Bioscience and Bioinformatics, Science campus, Myongji University, 449-728 Yongin, Gyeonggi Republic of Korea
| | - Seung-Chun Park
- Laboratory of Veterinary Pharmacokinetics and Pharmacodynamics (LVPP), College of Veterinary Medicine, Kyungpook National University, 41566, 80 Daehakro, Bukgu, Daegu, Republic of Korea
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12
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Yalamanchili C, Chittiboyina AG, Chandra Kumar Rotte S, Katzenellenbogen JA, Helferich WG, Khan IA. A chiral pool approach for asymmetric syntheses of both antipodes of equol and sativan. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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13
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Tang Y, Jiang C, Zhang X, Liu C, Lin J, Wang Y, Du C, Peng X, Li W, Liu Y, Cheng M. Collective Syntheses of 2-(3-Methylbenzofuran-2-yl)phenol-Derived Natural Products by a Cascade [3,3]-Sigmatropic Rearrangement/Aromatization Strategy. J Org Chem 2017; 82:11102-11109. [PMID: 28944672 DOI: 10.1021/acs.joc.7b02066] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A cascade [3,3]-sigmatropic rearrangement/aromatization strategy to the synthesis of 2-(3-methylbenzofuran-2-yl)phenol derivatives was developed and applied to the collective syntheses of seven 2-arylbenzofuran-containing natural products, namely glycybenzofuran, glycyuralin E, lespedezol A1, puerariafuran, 7,2',4'-trihydroxy-3-benzofurancarboxylic acid, coumestrol, and 4'-O-methylcoumestrol. Among them, the total syntheses of glycybenzofuran, glycyuralin E, puerariafuran, 7,2',4'-trihydroxy-3-benzofurancarboxylic acid, and 4'-O-methylcoumestrol were reported for the first time. The practicality of this novel strategy in preparation of the key intermediates was demonstrated by performing the reaction on gram scale and by synthesizing a series of natural products with 2-(3-methylbenzofuran-2-yl)phenol scaffolds in a common strategy.
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Affiliation(s)
- Yingzhan Tang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China
| | - Chongguo Jiang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China
| | - Xinhang Zhang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University , Shenyang 110016, P. R. China
| | - Chengjun Liu
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University , Shenyang 110016, P. R. China
| | - Jingsheng Lin
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University , Shenyang 110016, P. R. China
| | - Yanshi Wang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China
| | - Chuan Du
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China
| | - Xiaoshi Peng
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China
| | - Wei Li
- Faculty of Pharmaceutical Sciences, Toho University , Miyama 2-2-1, Funabashi, Chiba 274-8510, Japan
| | - Yongxiang Liu
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University , Shenyang 110016, P. R. China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China
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14
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Bayat A, Fattahi A. The free radical scavenging activity of lespedezacoumestan toward ˙OH radical: A quantum chemical and computational kinetics study. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3755] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Ahmad Bayat
- Department of Chemistry; Sharif University of Technology; Tehran Iran
| | - Alireza Fattahi
- Department of Chemistry; Sharif University of Technology; Tehran Iran
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15
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Methanolic extract from Lespedeza bicolor: potential candidates for natural antioxidant and anticancer agent. J TRADIT CHIN MED 2017. [DOI: 10.1016/s0254-6272(17)30150-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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A new exploration of licorice metabolome. Food Chem 2016; 221:959-968. [PMID: 27979300 DOI: 10.1016/j.foodchem.2016.11.068] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 10/25/2016] [Accepted: 11/16/2016] [Indexed: 12/14/2022]
Abstract
The roots and rhizomes of licorice plants (genus Glycyrrhiza L.) are commercially employed, after processing, in confectionery production or as sweetening and flavouring agents in the food, tobacco and beer industries. G. glabra, G. inflata and G. uralensis are the most significant licorice species, often indistinctly used for different productions. Licorice properties are directly related to its chemical composition, which determines the commercial values and the quality of the derived products. In order to better understand the characteristics and properties of each species, a chemical characterization of three species of licorice (G. glabra, G. inflata, G. uralensis) is proposed, through an untargeted metabolomic approach and using high-resolution mass spectrometry. The statistical analysis reveals new possible markers for the analyzed species, and provides a reliable identification of a high number of metabolites, contributing to the characterization of Glycyrrhiza metabolome.
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Kim NK, Park HM, Lee J, Ku KM, Lee CH. Seasonal Variations of Metabolome and Tyrosinase Inhibitory Activity of Lespedeza maximowiczii during Growth Periods. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:8631-8639. [PMID: 26345477 DOI: 10.1021/acs.jafc.5b03566] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Lespedeza species are useful for pasture and energy crops as well as medical plants. We determined the metabolites discriminated from the each growth period (3, 4, 6, 8, 15, and 18 months) after germination in leaves and stems of Lespedeza maximowizii by a metabolomics technique. Specifically, levels of sugars and luteolin-dominated derivatives were significantly elevated in samples harvested in November. This may be related to the cold tolerance mechanism against the low temperatures of the winter season. The concentrations of secondary metabolites, isoflavones and flavanones, as well as tyrosinase inhibitory activity were the highest in the 6 month samples, which were harvested in September, during the fall season. The tyrosinase inhibitory activity in leaves was higher than that in stems irrespective of the growth period. This study suggests that mass spectrometry-based metabolite profiling could be used as a tool to examine quantitative or qualitative metabolite changes related to seasonal variations and to understand the correlation between activity and metabolites.
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Affiliation(s)
- Na kyung Kim
- Department of Bioscience and Biotechnology, Konkuk University , 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Hye Min Park
- Department of Bioscience and Biotechnology, Konkuk University , 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Joongku Lee
- Department of Environment and Forest Resources, Chungnam National University , 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Kang-Mo Ku
- Division of Plant and Soil Sciences, West Virginia University , Morgantown, West Virginia 26505, United States
| | - Choong Hwan Lee
- Department of Bioscience and Biotechnology, Konkuk University , 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
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19
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A potential anti-inflammation activity and depigmentation effect of Lespedeza bicolor extract and its fractions. Saudi J Biol Sci 2015; 23:9-14. [PMID: 26858533 PMCID: PMC4705262 DOI: 10.1016/j.sjbs.2015.01.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 01/20/2015] [Accepted: 01/24/2015] [Indexed: 11/23/2022] Open
Abstract
Postinflammatory hyperpigmentation (PIH) is an acquire hypermelanosis after cutaneous inflammation and injury. The aim of the present study was to investigate a natural ingredient with the anti-inflammatory and depigmentation activities into possible applications of postinflammatory hyperpigmentation. Methanol extracts of Lespedeza bicolor and its various fractions inhibited LPS-induced NO production in RAW 264.7 macrophages in a concentration-dependent manner. In particular, the ethyl acetate fraction was shown to be inhibition of NO production (89%) and down-regulation of iNOS mRNA without causing cytotoxicity. In addition, ethyl acetate fraction significantly attenuated LPS-induced NF-κB activation (P < 0.05), indicating the anti-inflammatory activity due to NF-κB inhibition. Moreover, extracts, mainly ethyl acetate fraction, exhibited not only DPPH free radical scavenging activity (IC50, 112.45 μg/mL) with 4 times lower activity than ascorbic acid, but also anti-tyrosinase activity (IC50, 1 μg/mL) with a similar activity to arbutin showing a competitive inhibitor. Furthermore, vitexin and haginins A, B and C were identified through LC–MS analysis as potential compounds responsible for these effects. These results suggest that L. bicolor extract have anti-inflammatory, antioxidant activities and tyrosinase inhibitory effect and it might be used in the management of postinflammatory pigmentation through inhibition of pathogenic process involved in hyperpigmentation.
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20
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New flavonoids from Campylotropis hirtella with immunosuppressive activity. Fitoterapia 2014; 95:220-8. [DOI: 10.1016/j.fitote.2014.03.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Revised: 03/26/2014] [Accepted: 03/28/2014] [Indexed: 02/06/2023]
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21
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Heo DY, Kim YM, Lee J, Park SH, Kim J, Park HM, Lee CH. Desmodianone H and uncinanone B, potential tyrosinase inhibitors obtained from Lespedeza maximowiczii by using bioactivity-guided isolation. Biosci Biotechnol Biochem 2014; 78:943-5. [PMID: 25036117 DOI: 10.1080/09168451.2014.905180] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
A new bioactive compound, namely desmodianone H(1), and another known compound uncinanone B(2) were first isolated using bioactivity-guided isolation from the leaves of Lespedeza maximowiczii and structures were elucidated by comprehensive analysis of their nuclear magnetic resonance and mass spectrometry data. Compounds 1 and 2 exhibited strong inhibitory effects on mushroom tyrosinase activity.
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Affiliation(s)
- Do Yeon Heo
- a Department of Bioscience and Biotechnology , Konkuk University , Seoul , Republic of Korea
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22
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Ruan L, Shi M, Mao S, Yu L, Yang F, Tang J. An efficient approach to construct 2-arylbenzo[b]furans from 2-methoxychalcone epoxides. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.12.050] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Chen J, Li J, Su W. Palladium-catalyzed tandem reaction of 2-hydroxyarylacetonitriles with sodium sulfinates: one-pot synthesis of 2-arylbenzofurans. Org Biomol Chem 2014; 12:4078-83. [DOI: 10.1039/c4ob00575a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Palladium-catalyzed desulfinative addition and intramolecular annulation tandem reactions of 2-hydroxyarylacetonitriles with sodium sulfinates for one-pot synthesis of 2-arylbenzofurans.
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Affiliation(s)
- Jiuxi Chen
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals
- College of Pharmaceutical Sciences
- Zhejiang University of Technology
- Hangzhou 310014, China
- College of Chemistry & Materials Engineering
| | - Jianjun Li
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals
- College of Pharmaceutical Sciences
- Zhejiang University of Technology
- Hangzhou 310014, China
| | - Weike Su
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals
- College of Pharmaceutical Sciences
- Zhejiang University of Technology
- Hangzhou 310014, China
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24
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Arai MA, Koryudzu K, Koyano T, Kowithayakorn T, Ishibashi M. Naturally occurring Ngn2 promoter activators from Butea superba. MOLECULAR BIOSYSTEMS 2013; 9:2489-97. [DOI: 10.1039/c3mb70083f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Park HY, Kim M, Han J. Stereospecific microbial production of isoflavanones from isoflavones and isoflavone glucosides. Appl Microbiol Biotechnol 2011; 91:1173-81. [PMID: 21562980 DOI: 10.1007/s00253-011-3310-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Revised: 04/01/2011] [Accepted: 04/05/2011] [Indexed: 11/26/2022]
Abstract
A Gram-negative anaerobic microorganism, MRG-1, isolated from human intestine showed high activities of deglycosylation and reduction of daidzin, based on rapid TLC analysis. A rod-shaped strain MRG-1 was identified as a new species showing 91.0% homology to Coprobacillus species, based on 16S rRNA sequence analysis. The strain MRG-1 showed β-glucosidase activity toward daidzin and genistin, and daidzein and genistein were produced, respectively. However, the strain MRG-1 did not react with flavone glycosides, flavanone glycosides, and isoflavone C-glucoside. Besides, MRG-1 showed stereoselective reductase activity to isoflavone, daidzein, genistein, 7-hydroxyisoflavone, and formononetin, resulting in the formation of corresponding R-isoflavanone enantiomers. The new isoflavanones of 7-hydroxyisoflavanone and dihydroformononetin were characterized by NMR, and the absolute configurations of the enantiomers were determined with CD spectroscopy. The kinetic study of the anaerobic biotransformation showed both activities were exceptionally fast compared to the reported conversion by other anaerobic bacteria.
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Affiliation(s)
- Hye-Yeon Park
- Metalloenzyme Research Group and Department of Biotechnology, Chung-Ang University, Anseong 456-756, South Korea
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Li MJ, Zhang LM, Liu WX, Lu WC. DFT Study on Molecular Structures and ROS Scavenging Mechanisms of Novel Antioxidants fromLespedeza Virgata. CHINESE J CHEM PHYS 2011. [DOI: 10.1088/1674-0068/24/02/173-180] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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27
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Sobolev VS, Neff SA, Gloer JB, Khan SI, Tabanca N, De Lucca AJ, Wedge DE. Pterocarpenes elicited by Aspergillus caelatus in peanut (Arachis hypogaea) seeds. PHYTOCHEMISTRY 2010; 71:2099-2107. [PMID: 21030054 DOI: 10.1016/j.phytochem.2010.09.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Revised: 07/02/2010] [Accepted: 09/27/2010] [Indexed: 05/30/2023]
Abstract
The substituted pterocarpenes named aracarpene-1 (1) and aracarpene-2 (2) were isolated from wounded peanut seeds challenged by a strain of Aspergillus caelatus. The structures of these putative phytoalexins were determined by interpretation of NMR and MS data. The aracarpenes were investigated for their antifungal and antibacterial activities as well as antioxidant, anti-inflammatory, and cytotoxic activities in mammalian cells. Aracarpene-2 demonstrated high antibacterial properties against tested gram-positive and gram-negative bacteria, whereas aracarpene-1 displayed low antibacterial properties against the same bacteria. Both compounds had no antifungal activity against Aspergillus flavus. Together with peanut stilbenoids that are also produced in the challenged seeds, these compounds may represent a class of low-molecular weight peanut metabolites with a defensive role(s) against pathogenic microorganisms.
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Affiliation(s)
- Victor S Sobolev
- National Peanut Research Laboratory, Agricultural Research Service, US Department of Agriculture, Dawson, GA 39842, USA.
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Park HY, Kim GB, Kwon YS. Two new dihydrofuranoisoflavanones from the leaves of Lespedeza maximowiczi and their inhibitory effect on the formation of advanced glycation end products. Arch Pharm Res 2010; 33:1159-63. [PMID: 20803117 DOI: 10.1007/s12272-010-0804-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2009] [Revised: 06/07/2010] [Accepted: 06/07/2010] [Indexed: 10/19/2022]
Abstract
Two new dihydrofuranoisoflavanones, 2',4',5-trihydroxy-[5''-(1,2-dihydroxy-1-methylethyl)-dihydrofurano(2'',3'':7,8)]-(3S)-isoflavanone (1) and 2', 4', 5-trihydroxy-[5''-(1,2-dihydroxy-1-methylethyl)-dihydrofurano(2'',3'':7,8)]-(3R)-isoflavanone (2) as well as one already-known compound, (+)-catechin (3), were isolated from an n-BuOH soluble fraction from the leaves of Lespedeza maximowiczi. Spectroscopic data was used to elucidate the structures of compounds 1 and 2. All of the isolates were evaluated in vitro for their inhibitory activity on the formation of advanced glycation end products (AGEs). Among these, compounds 1, 2, and 3 exhibited inhibitory activity against AGEs formation with IC(50) values of 20.6, 18.4, and 5.6 microM, respectively.
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Affiliation(s)
- Hyun Young Park
- College of Pharmacy, Kangwon National University, Chuncheon, 200-701, Korea
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Kim M, Marsh ENG, Kim SU, Han J. Conversion of (3S,4R)-tetrahydrodaidzein to (3S)-equol by THD reductase: proposed mechanism involving a radical intermediate. Biochemistry 2010; 49:5582-7. [PMID: 20515029 DOI: 10.1021/bi100465y] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To elucidate the mechanism of (3S)-equol biosynthesis, (2,3,4-d(3))-trans-THD was synthesized and converted to (3S)-equol by THD reductase in Eggerthella strain Julong 732. The position of the deuterium atoms in (3S)-equol was determined by (1)H NMR and (2)H NMR spectroscopy, and the product was identified as (2,3,4(alpha)-d(3))-(3S)-equol. All the deuterium atoms were retained, while the OH group at C-4 was replaced by a hydrogen atom with retention of configuration. To explain the deuterium retention in this stereospecific reduction, we propose a mechanism involving radical intermediates.
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Affiliation(s)
- Mihyang Kim
- Metalloenzyme Research Group and Department of Biotechnology, Chung-Ang University, Anseong 456-756, Korea
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Li SR, Chen PY, Chen LY, Lo YF, Tsai IL, Wang EC. Synthesis of haginin E, equol, daidzein, and formononetin from resorcinol via an isoflavene intermediate. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.02.159] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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31
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Stereospecific biotransformation of dihydrodaidzein into (3S)-equol by the human intestinal bacterium Eggerthella strain Julong 732. Appl Environ Microbiol 2009; 75:3062-8. [PMID: 19304836 DOI: 10.1128/aem.02058-08] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Stereochemical course of isoflavanone dihydrodaidzein (DHD) reduction into the isoflavan (3S)-equol via tetrahydrodaidzein (THD) by the human intestinal anaerobic bacterium Eggerthella strain Julong 732 was studied. THD was synthesized by catalytic hydrogenation, and each stereoisomer was separated by chiral high-performance liquid chromatography. Circular dichroism spectroscopy was used to elucidate the absolute configurations of four synthetic THD stereoisomers. Rapid racemization of DHD catalyzed by Julong 732 prevented the substrate stereospecificity in the conversion of DHD into THD from being confirmed. The absolute configuration of THD, prepared by reduction of DHD in the cell-free incubation, was assigned as (3R,4S) via comparison of the retention time to that of the authentic THD by chiral chromatography. Dehydroequol (DE) was unable to produce the (3S)-equol both in the cell-free reaction and in the bacterial transformation, negating the possible intermediacy of DE. Finally, the intermediate (3R,4S)-THD was reduced into (3S)-equol by the whole cell, indicating the inversion of stereochemistry at C-3 during the reduction. A possible mechanism accounting for the racemization of DHD and the inversion of configuration of THD during reduction into (3S)-equol is proposed.
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Mori-Hongo M, Takimoto H, Katagiri T, Kimura M, Ikeda Y, Miyase T. Melanin synthesis inhibitors from Lespedeza floribunda. JOURNAL OF NATURAL PRODUCTS 2009; 72:194-203. [PMID: 19132934 DOI: 10.1021/np800395j] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In the course of our search for new melanin synthesis inhibitors from plants, 40 new flavonoids and 11 known flavonoids were isolated from the roots of Lespedeza floribunda Bunge. The structures of the new compounds were determined by MS and NMR analyses, and the absolute configurations by CD spectra. Many of the compounds inhibited melanin synthesis in normal human epidermal melanocytes (NHEM), and compounds 3, 7, 8, 11, 16, 24, 27, 29, 33, 43, 45, and 51 were particularly inhibitory. Their activities were stronger than that of hydroquinone, which is known as a major skin-lightening drug.
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Affiliation(s)
- Maya Mori-Hongo
- Cutaneous Drug Research Department, POLA Chemical Industries, Inc, Yokohama 244-0812, Japan
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34
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Mori-Hongo M, Yamaguchi H, Warashina T, Miyase T. Melanin synthesis inhibitors from Lespedeza cyrtobotrya. JOURNAL OF NATURAL PRODUCTS 2009; 72:63-71. [PMID: 19102656 DOI: 10.1021/np800535g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
From the roots of Lespedeza cyrtobotrya, 45 flavonoids were isolated along with 20 new and 25 known compounds. Lipophilic flavonoids 2, 3, 7, 9, 11, 28, 30, and 39 exhibited strong inhibitory activities on melanin synthesis in normal human epidermal melanocytes.
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Affiliation(s)
- Maya Mori-Hongo
- School of Pharmaceutical Sciences, University of Shizuoka, Yada 52-1, Suruga-ku, Shizuoka 422-8526, Japan
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35
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36
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37
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Chen Y, Wei X, Xie H, Deng H. Antioxidant 2-phenylbenzofurans and a coumestan from Lespedeza virgata. JOURNAL OF NATURAL PRODUCTS 2008; 71:929-932. [PMID: 18484774 DOI: 10.1021/np800016e] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Two 2-phenylbenzofurans, lespedezavirgatol (1) and lespedezavirgatal (2), and a coumestan, lespedezacoumestan (3), were isolated from the aerial parts of Lespedeza virgata, together with nine known flavonoids. Their structures were determined on the basis of spectroscopic data. The three new compounds showed strong oxygen radical absorbance capacity and potent inhibition toward lipid peroxidation in both plasma and kidney homogenate of renal failure rats.
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Affiliation(s)
- Yan Chen
- Department of Pharmacology, School of Traditional Chinese Medicine, Southern Medical UniVersity, Guangzhou 510515, People's Republic of China
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Wang ML, Mosjidis JA, Morris JB, Chen ZB, Barkley NA, Pederson GA. Evaluation of Lespedeza germplasm genetic diversity and its phylogenetic relationship with the genus Kummerowia. CONSERV GENET 2008. [DOI: 10.1007/s10592-008-9524-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Khupse RS, Erhardt PW. Practical synthesis of lespedezol A1. JOURNAL OF NATURAL PRODUCTS 2008; 71:275-277. [PMID: 18232641 DOI: 10.1021/np070493m] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A practical formal synthesis of lespedezol A 1 ( 1) was accomplished in 33% yield for four steps starting from formation of the substituted chalcone. Of particular note is a useful protocol for reduction of the 2-ene bond in the isoflavone intermediate. A significant improvement in the final ring closure when water was scavenged from the reaction is also noteworthy. The ready availability of lespedezol A 1 will provide material for further pharmacological evaluation and for exploration of the pterocarpene nucleus as a potential entry into various 6a-hydroxypterocarpans.
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Affiliation(s)
- Rahul S Khupse
- Center for Drug Design and Development, Department of Medicinal and Biological Chemistry, The University of Toledo College of Pharmacy, Toledo, Ohio 43606-3390, USA
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Tan L, Zhang XF, Yan BZ, Shi HM, Du LB, Zhang YZ, Wang LF, Tang YL, Liu Y. A novel flavonoid from Lespedeza virgata (Thunb.) DC.: Structural elucidation and antioxidative activity. Bioorg Med Chem Lett 2007; 17:6311-5. [PMID: 17890083 DOI: 10.1016/j.bmcl.2007.09.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2007] [Revised: 08/13/2007] [Accepted: 09/03/2007] [Indexed: 10/22/2022]
Abstract
Bioactivity guided fractionation of the ethanolic extract of the whole plants of Lespedeza virgata (Thunb.) DC. resulted in the isolation of a novel flavonoid (1) along with five known compounds 2-6. The molecular and structural formula as well as the stereochemistry of compound 1 were determined using data obtained from (1)H and (13)C NMR spectra, DEPT135 and by 2D HSQC, HMBC, (1)H-(1)H correlated spectroscopy ((1)H-(1)H COSY), and nuclear overhauser effect spectroscopy (NOESY) experiments. The superoxide anion scavenging activities of all isolated compounds were evaluated by the hypoxanthine nitro blue tetrazolium and ESR methods and the new compound 1 showed the strongest antioxidative activity 95.79% (IC(50)=0.14 mg/ml).
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Affiliation(s)
- Li Tan
- State Key Laboratory for SCUSS, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, PR China
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Abstract
Isoflavonoids are found predominantly in subfamily Papilionoideae of the Leguminosae. This review describes more than 420 new examples of Leguminosae isoflavonoids, giving details of their source, identification, biological activity, synthesis, and ecological or chemosystematic significance. Other topics addressed include the application of hyphenated analytical techniques to the characterisation of legume-derived isoflavonoids, and advances made in biosynthetic studies. A checklist of new compounds by species is given, and 404 references are cited.
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Affiliation(s)
- Nigel C Veitch
- Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, UK.
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Abstract
The synthesis of 6,9 di-demethoxy kushecarpin A has been achieved by the coupling of a benzofuran anion with a quinone monoketal followed by a regioselective cyclization and a stereoselective hydrogenation reaction.
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Affiliation(s)
- George A Kraus
- Department of Chemistry, Iowa State University, Ames, IA 50011, USA
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Abstract
Some of the recent advances in flavonoid research are reviewed. The role of anthocyanins and flavones in providing stable blue flower colours in the angiosperms is outlined. The contribution of leaf flavonoids to UV-B protection in plants is critically discussed. Advances in understanding the part played by flavonoids in warding off microbial infection and protecting plants from herbivory are described. The biological properties of flavonoids are considered in an evaluation of the medicinal and nutritional values of these compounds.
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Affiliation(s)
- J B Harborne
- Department of Botany, School of Plant Sciences, The University of Reading, UK
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