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Yenigün S, Başar Y, İpek Y, Behçet L, Özen T, Demirtaş İ. Determination of antioxidant, DNA protection, enzyme inhibition potential and molecular docking studies of a biomarker ursolic acid in Nepeta species. J Biomol Struct Dyn 2024; 42:5799-5816. [PMID: 37394807 DOI: 10.1080/07391102.2023.2229440] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 06/17/2023] [Indexed: 07/04/2023]
Abstract
Ursolic acid (UA), which has many biological properties such as anti-cancer, anti-inflammatory and antioxidant, and regulates some pharmacological processes, has been isolated from the flowers, leaves, berries and fruits of many plant species. In this work, UA was purified from the methanol-chloroform crude extract of Nepeta species (N. aristata, N. baytopii, N. italica, N. trachonitica, N. stenantha) using a silica gel column with chloroform or ethyl acetate solvents via bioactivity-guided isolation. The most active sub-fractions were determined under bioactivities using antioxidant and DNA protection activities and enzyme inhibitions. UA was purified from these fractions and its structure was elucidated by NMR spectroscopy techniques. The highest amount of UA was found in N. stenantha (8.53 mg UA/g), while the lowest amount of UA was found in N. trachonitica (1.92 mg UA/g). The bioactivities of UA were evaluated with antioxidant and DNA protection activities, enzyme inhibitions, kinetics and interactions. The inhibition values (IC50) of α-amylase, α-glucosidase, urease, CA, tyrosinase, lipase, AChE, and BChE were determined between 5.08 and 181.96 µM. In contrast, Ki values of enzyme inhibition kinetics were observed between 0.04 and 0.20 mM. In addition, Ki values of these enzymes for enzyme-UA interactions were calculated as 0.38, 0.86, 0.45, 1.01, 0.23, 0.41, 0.01 and 2.24 µM, respectively. It is supported that UA can be widely used as a good antioxidant against oxidative damage, an effective DNA protector against genetic diseases, and a suitable inhibitor for metabolizing enzymes.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Semiha Yenigün
- Faculty of Science, Department of Chemistry, Ondokuz Mayıs University, Samsun, Turkey
| | - Yunus Başar
- Faculty of Arts and Sciences, Department of Biochemistry, Iğdır University, Iğdır, Turkey
| | - Yaşar İpek
- Faculty of Science, Department of Chemistry, Çankırı Karatekin University, Çankırı, Turkey
| | - Lütfi Behçet
- Faculty of Arts and Sciences, Department of Molecular Biology and Genetics, Bingöl University, Bingöl, Turkey
| | - Tevfik Özen
- Faculty of Science, Department of Chemistry, Ondokuz Mayıs University, Samsun, Turkey
| | - İbrahim Demirtaş
- Faculty of Arts and Sciences, Department of Biochemistry, Iğdır University, Iğdır, Turkey
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ondokuz Mayıs University, Samsun, Turkey
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Visvanathan R, Houghton MJ, Barber E, Williamson G. Structure-function relationships in (poly)phenol-enzyme binding: Direct inhibition of human salivary and pancreatic α-amylases. Food Res Int 2024; 188:114504. [PMID: 38823880 DOI: 10.1016/j.foodres.2024.114504] [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: 03/24/2024] [Revised: 05/04/2024] [Accepted: 05/07/2024] [Indexed: 06/03/2024]
Abstract
(Poly)phenols inhibit α-amylase by directly binding to the enzyme and/or by forming starch-polyphenol complexes. Conventional methods using starch as the substrate measure inhibition from both mechanisms, whereas the use of shorter oligosaccharides as substrates exclusively measures the direct interaction of (poly)phenols with the enzyme. In this study, using a chromatography-based method and a short oligosaccharide as the substrate, we investigated the detailed structural prerequisites for the direct inhibition of human salivary and pancreatic α-amylases by over 50 (poly)phenols from the (poly)phenol groups: flavonols, flavones, flavanones, flavan-3-ols, polymethoxyflavones, isoflavones, anthocyanidins and phenolic acids. Despite being structurally very similar (97% sequence homology), human salivary and pancreatic α-amylases were inhibited to different extents by the tested (poly)phenols. The most potent human salivary α-amylase inhibitors were luteolin and pelargonidin, while the methoxylated anthocyanidins, peonidin and petunidin, significantly blocked pancreatic enzyme activity. B-ring methoxylation of anthocyanidins increased inhibition against both human α-amylases while hydroxyl groups at C3 and B3' acted antagonistically in human salivary inhibition. C4 carbonyl reduction, or the positive charge on the flavonoid structure, was the key structural feature for human pancreatic inhibition. B-ring glycosylation did not affect salivary enzyme inhibition, but increased pancreatic enzyme inhibition when compared to its corresponding aglycone. Overall, our findings indicate that the efficacy of interaction with human α-amylase is mainly influenced by the type and placement of functional groups rather than the number of hydroxyl groups and molecular weight.
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Affiliation(s)
- Rizliya Visvanathan
- Department of Nutrition, Dietetics and Food, Monash University, BASE Facility, 264 Ferntree Gully Road, Notting Hill, VIC 3168, Australia; Victorian Heart Institute, Monash University, Victorian Heart Hospital, 631 Blackburn Road, Clayton, VIC 3168, Australia
| | - Michael J Houghton
- Department of Nutrition, Dietetics and Food, Monash University, BASE Facility, 264 Ferntree Gully Road, Notting Hill, VIC 3168, Australia; Victorian Heart Institute, Monash University, Victorian Heart Hospital, 631 Blackburn Road, Clayton, VIC 3168, Australia
| | - Elizabeth Barber
- Department of Nutrition, Dietetics and Food, Monash University, BASE Facility, 264 Ferntree Gully Road, Notting Hill, VIC 3168, Australia; Victorian Heart Institute, Monash University, Victorian Heart Hospital, 631 Blackburn Road, Clayton, VIC 3168, Australia
| | - Gary Williamson
- Department of Nutrition, Dietetics and Food, Monash University, BASE Facility, 264 Ferntree Gully Road, Notting Hill, VIC 3168, Australia; Victorian Heart Institute, Monash University, Victorian Heart Hospital, 631 Blackburn Road, Clayton, VIC 3168, Australia.
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Mioc M, Milan A, Malița D, Mioc A, Prodea A, Racoviceanu R, Ghiulai R, Cristea A, Căruntu F, Șoica C. Recent Advances Regarding the Molecular Mechanisms of Triterpenic Acids: A Review (Part I). Int J Mol Sci 2022; 23:ijms23147740. [PMID: 35887090 PMCID: PMC9322890 DOI: 10.3390/ijms23147740] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/11/2022] [Accepted: 07/11/2022] [Indexed: 02/01/2023] Open
Abstract
Triterpenic acids are phytocompounds with a widespread range of biological activities that have been the subject of numerous in vitro and in vivo studies. However, their underlying mechanisms of action in various pathologies are not completely elucidated. The current review aims to summarize the most recent literature, published in the last five years, regarding the mechanism of action of three triterpenic acids (asiatic acid, oleanolic acid, and ursolic acid), corelated with different biological activities such as anticancer, anti-inflammatory, antidiabetic, cardioprotective, neuroprotective, hepatoprotective, and antimicrobial. All three discussed compounds share several mechanisms of action, such as the targeted modulation of the PI3K/AKT, Nrf2, NF-kB, EMT, and JAK/STAT3 signaling pathways, while other mechanisms that proved to only be specific for a part of the triterpenic acids discussed, such as the modulation of Notch, Hippo, and MALAT1/miR-206/PTGS1 signaling pathway, were highlighted as well. This paper stands as the first part in our literature study on the topic, which will be followed by a second part focusing on other triterpenic acids of therapeutic value.
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Affiliation(s)
- Marius Mioc
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania; (M.M.); (A.M.); (A.P.); (R.R.); (R.G.); (A.C.); (C.Ș.)
- Research Centre for Pharmaco-Toxicological Evaluation, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania
| | - Andreea Milan
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania; (M.M.); (A.M.); (A.P.); (R.R.); (R.G.); (A.C.); (C.Ș.)
- Research Centre for Pharmaco-Toxicological Evaluation, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania
| | - Daniel Malița
- Department of Radiology, “Victor Babes” University of Medicine and Pharmacy Timisoara, 300041 Timisoara, Romania
- Correspondence: (D.M.); (A.M.); Tel.: +40-256-494-604 (D.M. & A.M.)
| | - Alexandra Mioc
- Research Centre for Pharmaco-Toxicological Evaluation, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania
- Department of Anatomy, Physiology, Pathophysiology, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania
- Correspondence: (D.M.); (A.M.); Tel.: +40-256-494-604 (D.M. & A.M.)
| | - Alexandra Prodea
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania; (M.M.); (A.M.); (A.P.); (R.R.); (R.G.); (A.C.); (C.Ș.)
- Research Centre for Pharmaco-Toxicological Evaluation, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania
| | - Roxana Racoviceanu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania; (M.M.); (A.M.); (A.P.); (R.R.); (R.G.); (A.C.); (C.Ș.)
- Research Centre for Pharmaco-Toxicological Evaluation, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania
| | - Roxana Ghiulai
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania; (M.M.); (A.M.); (A.P.); (R.R.); (R.G.); (A.C.); (C.Ș.)
- Research Centre for Pharmaco-Toxicological Evaluation, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania
| | - Andreea Cristea
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania; (M.M.); (A.M.); (A.P.); (R.R.); (R.G.); (A.C.); (C.Ș.)
| | - Florina Căruntu
- Department of Medical Semiology II, Faculty of Medicine, “Victor Babeş” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu Street, 300041 Timisoara, Romania;
| | - Codruța Șoica
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania; (M.M.); (A.M.); (A.P.); (R.R.); (R.G.); (A.C.); (C.Ș.)
- Research Centre for Pharmaco-Toxicological Evaluation, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq., No. 2, 300041 Timisoara, Romania
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Shen M, Wang D, Sennari Y, Zeng Z, Baba R, Morimoto H, Kitamura N, Nakanishi T, Tsukada J, Ueno M, Todoroki Y, Iwata S, Yonezawa T, Tanaka Y, Osada Y, Yoshida Y. Pentacyclic triterpenoid ursolic acid induces apoptosis with mitochondrial dysfunction in adult T-cell leukemia MT-4 cells to promote surrounding cell growth. Med Oncol 2022; 39:118. [PMID: 35674939 DOI: 10.1007/s12032-022-01707-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 03/14/2022] [Indexed: 10/18/2022]
Abstract
We investigated the antitumor effects of oleanolic acid (OA) and ursolic acid (UA) on adult T-cell leukemia cells. OA and UA dose-dependently inhibited the proliferation of adult T-cell leukemia cells. UA-treated cells showed caspase 3/7 and caspase 9 activation. PARP cleavage was detected in UA-treated MT-4 cells. Activation of mTOR and PDK-1 was inhibited by UA. Autophagosomes were detected in MT-4 cells after UA treatment using electron microscopy. Consistently, mitophagy was observed in OA- and UA-treated MT-4 cells by confocal microscopy. The mitochondrial membrane potential in MT-4 cells considerably decreased, and mitochondrial respiration and aerobic glycolysis were significantly reduced following UA treatment. Furthermore, MT-1 and MT-4 cells were sorted into two regions based on their mitochondrial membrane potential. UA-treated MT-4 cells from both regions showed high activation of caspase 3/7, which were inhibited by Z-vad. Interestingly, MT-4 cells cocultured with sorted UA-treated cells showed enhanced proliferation. Finally, UA induced cell death and ex vivo PARP cleavage in peripheral blood mononuclear cells from patients with adult T-cell leukemia. Therefore, UA-treated MT-4 cells show caspase activation following mitochondrial dysfunction and may produce survival signals to the surrounding cells.
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Affiliation(s)
- Mengyue Shen
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Duo Wang
- Department of Radiobiology and Hygiene Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Yusuke Sennari
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Zirui Zeng
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Ryoko Baba
- Department of Anatomy (II), School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Hiroyuki Morimoto
- Department of Anatomy (II), School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Noriaki Kitamura
- Department of Hematology, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Tsukasa Nakanishi
- Department of Hematology, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Junichi Tsukada
- Department of Hematology, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Masanobu Ueno
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Yasuyuki Todoroki
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Shigeru Iwata
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Tomo Yonezawa
- Division of Functional Genomics and Therapeutic Innovation, Research Center for Advanced Genomics, Graduate School of Biomedical Sciences,, Nagasaki University, 1-12-14 Sakamoto, Nagasaki, 852-8523, Japan
| | - Yoshiya Tanaka
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Yoshio Osada
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Yasuhiro Yoshida
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan.
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Saravanakumar K, Park S, Mariadoss AVA, Sathiyaseelan A, Veeraraghavan VP, Kim S, Wang MH. Chemical composition, antioxidant, and anti-diabetic activities of ethyl acetate fraction of Stachys riederi var. japonica (Miq.) in streptozotocin-induced type 2 diabetic mice. Food Chem Toxicol 2021; 155:112374. [PMID: 34186120 DOI: 10.1016/j.fct.2021.112374] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 06/03/2021] [Accepted: 06/24/2021] [Indexed: 01/01/2023]
Abstract
This work analysed the chemical composition, antioxidant, and enzyme inhibitory activities of solvent extract (SJ-ME) and fractions (SJ-HF, SJ-EAF, and SJ-MF) of the Stachys riederi var. japonica (Miq.) (SJ). Furthermore, the effect of SJ-EAF in STZ induced type 2 diabetic mice was examined. Among the samples, SJ-EAF exhibited a lower IC50 concentration of 64.2 ± 0.48 μg/mL for DPPH and 82.6 ± 0.09 μg/mL for ABTS+. The SJ-EAF concentration of 2.89 ± 0.03 μg and 2.27 ± 0.98 μg was equivalent to 1 μg of acarbose mediated enzyme inhibitory effect against α-amylase and α -glucosidase, respectively. The SJ-EAF did not show cytotoxicity (<80%) to NIH3T3 nor HepG2 cells but enhanced the glucose uptake in the IR-HepG2. LC-MS/MS of SJ-EAF showed the presence of a total of 16 compounds. Among the identified compounds, rosmarinic acid, caffeic acid, oleanolic acid, and ursolic acid showed high catalytic activity of α-amylase and α-glucosidase. The treatments of SJ-EAF restored the level of blood glucose, body weight, insulin, HDL and mRNA level of IRS1, GLUT2, GLUT4 and Akt whereas it reduced the excess elevation of total cholesterol, total triglycerides, LDL, AST, ALT, ALP, BUN, and creatinine in STZ induced diabetic mice. Overall, the present study concluded that the SJ-EAF exhibited promising antidiabetic activity.
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MESH Headings
- Animals
- Antioxidants/chemistry
- Antioxidants/metabolism
- Antioxidants/therapeutic use
- Antioxidants/toxicity
- Cell Line, Tumor
- Diabetes Mellitus, Experimental/chemically induced
- Diabetes Mellitus, Experimental/drug therapy
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Type 2/chemically induced
- Diabetes Mellitus, Type 2/drug therapy
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Gene Expression/drug effects
- Humans
- Hypoglycemic Agents/chemistry
- Hypoglycemic Agents/metabolism
- Hypoglycemic Agents/therapeutic use
- Hypoglycemic Agents/toxicity
- Male
- Mice, Inbred ICR
- Molecular Docking Simulation
- Plant Extracts/chemistry
- Plant Extracts/metabolism
- Plant Extracts/therapeutic use
- Plant Extracts/toxicity
- Protein Binding
- Stachys/chemistry
- Streptozocin
- alpha-Amylases/metabolism
- alpha-Glucosidases/metabolism
- Mice
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Affiliation(s)
- Kandasamy Saravanakumar
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - SeonJu Park
- Chuncheon Center, Korea Basic Science Institute (KBSI), Chuncheon, 24341, Republic of Korea
| | | | - Anbazhagan Sathiyaseelan
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Vishnu Priya Veeraraghavan
- Department of Biochemistry, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 600077, India
| | - SeongJung Kim
- Department of Physical Therapy, College of Health and Science, Kangwon National University. Samcheok-si, 24949, Republic of Korea.
| | - Myeong-Hyeon Wang
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 24341, Republic of Korea.
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Wang C, Wang X, Zhao S, Sun W, Tong S. Preparative separation of structural isomeric pentacyclic triterpene oleanolic acid and ursolic acid from natural products by pH-zone-refining countercurrent chromatography. RSC Adv 2019; 9:38860-38866. [PMID: 35540200 PMCID: PMC9076006 DOI: 10.1039/c9ra06082k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 11/11/2019] [Indexed: 11/21/2022] Open
Abstract
In this work, pH-zone-refining countercurrent chromatography was investigated in the preparative separation of two bioactive components, oleanolic acid and ursolic acid, from three different natural products, Aralia chinensis, apple peels and Eriobotrya japonica Thunb. Oleanolic acid and ursolic acid are structurally isomeric pentacyclic triterpene acids that are widely distributed in many natural products. However, it was difficult to separate these components with high purity by conventional methods. A biphasic solvent system composed of n-hexane–dichloromethane–methanol–water (7 : 3 : 2 : 8, v/v) was selected, in which an optimized concentration of 10 mmol L−1 trifluoroacetic acid was added in the upper phase as the retainer and 10 mmol L−1 ammonia (with 25–28% NH3) was added in the aqueous phase as the eluter. Consequently, 38.56 mg of oleanolic acid with 99.01% purity was separated from 100 mg of the crude extract of Aralia chinensis, while 65.6 mg of a mixture of ursolic acid (90.98%) and oleanolic acid (6.51%) and 46.6 mg of a mixture of ursolic acid (74.35%) and oleanolic acid (23.61%) were separated from 100 mg of the crude extract of apple peels and 100 mg of the crude extract of Eriobotrya japonica Thunb., respectively, by pH-zone-refining countercurrent chromatography using the above selected biphasic solvent system. The results showed that pH-zone-refining countercurrent chromatography is an efficient method for the preparative separation of pentacyclic triterpene acids from natural products. pH-zone-refining countercurrent chromatography was investigated in preparative separation of oleanolic acid and ursolic acid from three different natural products, Aralia chinensis, apple peels and Eriobotrya japonica Thunb.![]()
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Affiliation(s)
- Chaoyue Wang
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou
- China
| | - Xiang Wang
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou
- China
| | - Shanshan Zhao
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou
- China
| | - Wenyu Sun
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou
- China
| | - Shengqiang Tong
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou
- China
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7
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Gao C, Gu X, Wang X, Cao H, Lin B, Liu Y, Di X. Corygaline A, a hexahydrobenzophenanthridine alkaloid with an unusual carbon skeleton from Corydalis bungeana Turcz. Org Biomol Chem 2018; 16:8710-8714. [DOI: 10.1039/c8ob02194e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A novel hexahydrobenzophenanthridine alkaloid, corygaline A (1), was isolated from Corydalis bungeana Turcz.
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Affiliation(s)
- Chang Gao
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Xiaoting Gu
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Xin Wang
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Huikun Cao
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Bin Lin
- School of Pharmaceutical Engineering
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Youping Liu
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Xin Di
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
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