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Zhou PJ, Zhao ZY, Zhu JX, Zang Y, Benjamin MM, Xiong J, Li J, Hu JF. Phytochemical and biological studies on rare and endangered plants endemic to China. Part XXXVI. Tsugaforrestiacids A-O: Structurally diverse C-18 carboxylated diterpenoids from the twigs and needles of the 'vulnerable' conifer Tsuga forrestii and their inhibitory effects on ATP-citrate lyase. PHYTOCHEMISTRY 2024; 226:114221. [PMID: 39002688 DOI: 10.1016/j.phytochem.2024.114221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 07/10/2024] [Accepted: 07/10/2024] [Indexed: 07/15/2024]
Abstract
An extensive phytochemical investigation on the EtOAc-soluble fraction of the 90% MeOH extract from the twigs and needles of the 'vulnerable' Chinese endemic conifer Tsuga forrestii (Forrest's hemlock) led to the isolation and characterization of 50 structurally diverse diterpenoids, including 15 unreported C-18 carboxylated ones (tsugaforrestiacids A-O, 1-15, resp.). Among them, compounds 1-7 are abieten-18-oic acids, compound 8 is an abieten-18-succinate, and compounds 10-12 are podocarpen-18-oic acids, whereas compounds 13-15 are pimarane-type, isopimarane-type, and totarane-type diterpenoid acids, respectively. Their structures and absolute configurations were determined by a combination of spectroscopic methods, GIAO NMR calculations and DP4+ probability analyses, electronic circular dichroism (ECD) data, and single crystal X-ray diffraction analyses. All the isolates were evaluated for their inhibitory activities against the ATP-citrate lyase (ACL), a key enzyme in cellular metabolism. Tsugaforrestiacids E (5) and H (8) were found to have significant inhibitory effects against ACL, with IC50 values of 5.3 and 6.2 μM, respectively. The interactions of the bioactive molecules with the ACL enzyme were examined by molecular docking studies. The isolated diterpenoids also provide chemotaxonomic evidence to support the delimitation of Tsuga from its closest sister group (Nothotsuga). The above findings highlight the importance of protecting plant species with unique and diverse secondary metabolites, which may be potential sources of new therapeutic agents for the treating ACL-associated diseases.
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Affiliation(s)
- Peng-Jun Zhou
- School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, PR China; Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, PR China
| | - Ze-Yu Zhao
- School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, PR China; Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, PR China
| | - Jin-Xin Zhu
- School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, PR China
| | - Yi Zang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai 201203, PR China
| | - Menny M Benjamin
- Colleges of Pharmacy and Medicine, Medical University of South Carolina, Charleston 29425-5700, USA
| | - Juan Xiong
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, PR China.
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai 201203, PR China
| | - Jin-Feng Hu
- School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, PR China; Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, PR China; Colleges of Pharmacy and Medicine, Medical University of South Carolina, Charleston 29425-5700, USA.
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2
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Tang LY, Zhang YZ, Gao Y, Tsering T, Jia J, Wang A. Diterpenoid glucosides with anti-inflammatory activity from Sigesbeckia glabrescens. Fitoterapia 2024; 175:105954. [PMID: 38583638 DOI: 10.1016/j.fitote.2024.105954] [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: 02/19/2024] [Revised: 04/02/2024] [Accepted: 04/04/2024] [Indexed: 04/09/2024]
Abstract
Six previously undescribed diterpenoid glucosides, along with four known compounds, were isolated from the aerial parts of Sigesbeckia glabrescens. The structures and absolute configurations of undescribed compounds were elucidated using extensive spectroscopic techniques, ECD calculations and chemical methods. Compounds 1 and 8 exhibited anti-inflammatory activity against LPS-induced NO production in RAW 264.7 macrophages, with compound 8 demonstrating significant inhibitory activity compared to positive control minocycline, boasting an IC50 value at 14.20 μM.
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Affiliation(s)
- Lian-Yu Tang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Ya-Zhao Zhang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Yun Gao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Tashi Tsering
- Traditional Tibetan Medical Research & Study Institute of Regional Traditional Tibetan Medical Hospital, Lhasa, People's Republic of China.
| | - Jingming Jia
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.
| | - Anhua Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.
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Zhang X, Zheng R, Hu S, Cao W, Tan J, Yang W, Chen J. Ent-Pimaranes isolated from Flickingeria fimbriata and their acetylcholinesterase inhibitory activities. Fitoterapia 2023; 171:105687. [PMID: 37769998 DOI: 10.1016/j.fitote.2023.105687] [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: 07/07/2023] [Revised: 08/14/2023] [Accepted: 09/23/2023] [Indexed: 10/03/2023]
Abstract
Two new and six known ent-pimaranes were isolated from Flickingeria fimbriata. One of them possesses a rare carbon skeleton. It is the first time such a compound with this specific carbon skeleton has been isolated from a natural source. The structure and absolute configuration were determined by NMR, MS, and X-ray diffraction analysis. The biosynthetic pathway of the rare skeleton was proposed and suggested a new pathway for these nor-ent-pimarane analogues. All isolated compounds were screened for inhibitory activity against acetylcholinesterase (AChE). The compound 4 exhibits potent inhibitory effect on AChE with the 50% inhibitory concentration (IC50) being 5.8 μM, which is close to that of the positive control (Huperzine A). This is the first report about inhibitory activity on AChE of ent-pimaranes.
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Affiliation(s)
- Xuan Zhang
- School of Chemistry & Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Ruihan Zheng
- School of Chemistry & Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Suping Hu
- Jiangxi Vocational Technical College of Industry & Trade, Nanchang 330038, China
| | - Wei Cao
- Jiangxi Drug Inspector Center, Shangrao 334000, China
| | - Jinmei Tan
- School of Chemistry & Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Weiran Yang
- School of Chemistry & Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Jinlong Chen
- School of Chemistry & Chemical Engineering, Nanchang University, Nanchang 330031, China.
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Zhao Y, Huang HH, Wei JC, Wang Q, Long GQ, Wang AH, Jia JM. Antiproliferative ent-abietane diterpenoids from Euphorbia fischeriana. Nat Prod Res 2023; 37:4081-4088. [PMID: 36661108 DOI: 10.1080/14786419.2023.2169686] [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: 09/15/2022] [Accepted: 01/04/2023] [Indexed: 01/21/2023]
Abstract
Euphorfinoids M and N (1 and 2), two previously undescribed ent-abietane diterpenoids, together with seven known analogues (3-9), were isolated from the roots of wild Euphorbia fischeriana. Their structures were elucidated by spectroscopic analysis, including extensive NMR, HR-ESIMS, ECD, and comparison with structurally related known analogues. Bioassays against proliferative effects of HeLa cell line showed that compound 1 was the most active with IC50 3.62 ± 0.31 μM.
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Affiliation(s)
- Ye Zhao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Hui-Hui Huang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Jiang-Chun Wei
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Qing Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Guo-Qing Long
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - An-Hua Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Jing-Ming Jia
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
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5
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Li Y, Fu S, Liu B. Asymmetric syntheses of ent-pimarane diterpenoids. Org Biomol Chem 2023; 21:4409-4413. [PMID: 37194415 DOI: 10.1039/d3ob00575e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Aromatic ent-pimaranes are a group of aromatized tricyclic diterpenoids that exhibit diverse bioactivities. In this work, the first total syntheses of two aromatic ent-pimaranes were achieved via a C-ABC construction sequence enabled by chiral auxiliary controlled asymmetric radical polyene cyclization, and the subsequent substrate-controlled stereo-/regio-specific hydroboration of alkene allowed for access to both natural products with C19 oxidation modifications.
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Affiliation(s)
- Yunzhou Li
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Shaomin Fu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Bo Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
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Wang Y, Yan H, Zhao L, He XL, Bao TRG, Sun XD, Yang YC, Zhu SY, Gao XX, Wang AH, Jia JM. An integrated network pharmacology approach reveals that Darutigenol reduces inflammation and cartilage degradation in a mouse collagen-induced arthritis model by inhibiting the JAK-STAT3 pathway. JOURNAL OF ETHNOPHARMACOLOGY 2023; 314:116574. [PMID: 37160212 DOI: 10.1016/j.jep.2023.116574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 04/27/2023] [Accepted: 05/01/2023] [Indexed: 05/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Darutigenol (DL) is a natural active product derived from the Chinese herbal medicine Sigesbeckia glabrescens (Makino) Makino. It is administered as a traditional Chinese medicine (TCM) to dispel rheumatism, benefit the joints, and detoxify. However, its potential mechanism in the treatment of rheumatoid arthritis (RA) remains unknown. AIMS OF THE STUDY The objectives of this research were to determine the effects and elucidate the modes of action of DL on RA-related joint inflammation. MATERIALS AND METHODS Network pharmacology and molecular docking were used to screen and validate candidate DL targets for RA treatment, respectively. A DBA/1 mouse rheumatoid arthritis model was induced with bovine type II collagen. Intragastric DL administration was followed by the calculation of the clinical arthritis index. A section of the ankle joint was excised and stained and the pathological changes in it were observed. Enzyme-linked immunosorbent assays (ELISA) and western blotting (WB) were used to clarify the mechanisms of DL in RA treatment. RESULTS DL effectively attenuated the inflammation, mitigated the articular cartilage degradation, and bone erosion, and alleviated the inflammatory joints associated with RA. Network pharmacology screened six key targets of DL while molecular docking revealed that it docked well with its protein targets. The DL treatment group presented with significantly less ankle joint redness and swelling, a lower arthritis index scores and serum and bone marrow supernatant IL-6 levels, more complete ankle joint surfaces, and less synovial inflammation, cartilage degradation, and bone erosion than the collagen-induced arthritis (CIA) group. The DL treatment also substantially downregulated the Janus kinase (JAK)1, JAK3, matrix metalloproteinase (MMP)2, MMP9, and phospho-signal transducer and activator of transcription (p-STAT)3 proteins in the joints. CONCLUSIONS To the best of our knowledge, the present work was the first to demonstrate that DL has significant anti-inflammatory efficacy and reduces cartilage degradation and bone erosion. It also demonstrated that the anti-RA effect of DL may be explained by its ability to inhibit joint inflammation and reduce articular cartilage degradation through the interleukin (IL)-6/JAK1,3/STAT3 axis and downregulate MMP2 and MMP9. Hence, DL might play a therapeutic role in a mouse RA model.
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Affiliation(s)
- Yong Wang
- Teaching and Research Department of Chinese Materia Medica Resources, College of Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Hui Yan
- Teaching and Research Department of Chinese Materia Medica Resources, College of Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Long Zhao
- Teaching and Research Department of Chinese Materia Medica Resources, College of Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Xue-Lai He
- School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, 442000, People's Republic of China; Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Shiyan, 442000, People's Republic of China
| | - Te-Ri-Gen Bao
- Teaching and Research Department of Chinese Materia Medica Resources, College of Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Xian-Duo Sun
- Teaching and Research Department of Chinese Materia Medica Resources, College of Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Yong-Cheng Yang
- Teaching and Research Department of Chinese Materia Medica Resources, College of Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Shu-Yi Zhu
- Teaching and Research Department of Chinese Materia Medica Resources, College of Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Xiao-Xu Gao
- Teaching and Research Department of Chinese Materia Medica Resources, College of Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - An-Hua Wang
- Teaching and Research Department of Chinese Materia Medica Resources, College of Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China.
| | - Jing-Ming Jia
- Teaching and Research Department of Chinese Materia Medica Resources, College of Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China.
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Liu N, Luo TT, Wu C, Sun YL, Wang P, Zhang H, Ge D. ent-Pimarane Diterpenes from the Aerial Parts of Siegesbeckia pubescens. Chem Biodivers 2023; 20:e202201090. [PMID: 36728645 DOI: 10.1002/cbdv.202201090] [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: 11/18/2022] [Revised: 02/01/2023] [Accepted: 02/01/2023] [Indexed: 02/03/2023]
Abstract
Five new ent-pimarane diterpenes (1-5) and five known analogs (6-10) were isolated from the aerial parts of Siegesbeckia pubescens. Their structures, including absolute configurations, were determined by comprehensive spectroscopic methods especially 1D and 2D NMR and quantum chemical electronic circular dichroism calculations. All the isolated compounds were evaluated for their cytotoxicity against human BT549, A549 and H157 cancer cell lines. Among them, compounds 1 and 2 showed mild cytotoxicity against lung cancer cell lines H157 with IC50 values of 16.35±2.59 and 18.86±4.83 μM, respectively.
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Affiliation(s)
- Na Liu
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, P. R. China
| | - Ting-Ting Luo
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, P. R. China
| | - Cong Wu
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, P. R. China
| | - Yu-Lin Sun
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, P. R. China
| | - Peng Wang
- Shandong Jincheng Pharmaceutical Group Co., Ltd., Zibo, 255100, P. R. China
| | - Hua Zhang
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, P. R. China
| | - Di Ge
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, P. R. China
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8
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Gao X, Zheng Y, Zhang X, Hu G, Jia J, Wang A.
ent
‐Pimarane
Diterpenoid Dimers from
Sigesbeckia glabrescens
with Potent Anti‐inflammatory Activities. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Xiao‐Xu Gao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University Shenyang Liaoning 110016 China
| | - Ying‐Ying Zheng
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University Shenyang Liaoning 110016 China
| | - Xiao‐Yu Zhang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University Shenyang Liaoning 110016 China
| | - Gao‐Sheng Hu
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University Shenyang Liaoning 110016 China
| | - Jing‐Ming Jia
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University Shenyang Liaoning 110016 China
| | - An‐Hua Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University Shenyang Liaoning 110016 China
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Gao X, Shen X, Zheng Y, Yang L, Zhang X, Hu G, Jia J, Wang A. Sesquiterpene Lactones from Sigesbeckia glabrescens Possessing Potent Anti-inflammatory Activity by Directly Binding to IKKα/β. JOURNAL OF NATURAL PRODUCTS 2021; 84:2808-2821. [PMID: 34726063 DOI: 10.1021/acs.jnatprod.1c00416] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Chromatographic fractionation of Sigesbeckia glabrescens led to the identification of 10 new sesquiterpene lactones, named siegesbeckialides I-O (1-7) and glabrescones A-C (8-10), along with 14 known analogues. An anti-inflammatory activity assay showed that siegesbeckialide I (1) most potently inhibited LPS-induced NO production in RAW264.7 murine macrophages. Furthermore, siegesbeckialide I suppressed the protein expression of iNOS and COX2, as well as the release of PGE2, IL-1β, IL-6, and TNF-α in LPS-stimulated RAW264.7 cells. Mechanistically, siegesbeckialide I directly binds to inhibitors of IKKα/β and suppresses their phosphorylation. This leads to the inhibition of IKKα/β-mediated phosphorylation and degradation of inhibitor α of NF-κB (IκBα), as well as the activation of NF-κB signaling.
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Affiliation(s)
- Xiaoxu Gao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Xiaofei Shen
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, People's Republic of China
| | - Yingying Zheng
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Luyao Yang
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, People's Republic of China
| | - Xiaoyu Zhang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Gaosheng Hu
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Jingming Jia
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Anhua Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
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10
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Hu G, Gao X, Wang D, Long G, Jia J, Wang A. Sigesbeckia K and L, two new diterpenoids from Sigesbeckia glabrescens with anti-inflammatory activity. Nat Prod Res 2021; 36:1282-1287. [PMID: 33461328 DOI: 10.1080/14786419.2020.1871342] [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] [Indexed: 01/25/2023]
Abstract
A chemical investigation of Sigesbeckia glabrescens Makino identified four compounds. On the basis of spectroscopic data, they were determined to be ent-pimarane-type diterpenoids and their analogues, among which were two previously undescribed compounds, Sigesbeckia K (1) and Sigesbeckia L (2). The anti-inflammatory effects of these compounds were evaluated by testing their inhibition of LPS-induced NO production in BV2 microglial cells, which revealed potential inhibitory effects with IC50 value at 62.56 μM and compared with the positive control minocycline (IC50 32.84 μM).
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Affiliation(s)
- GaoSheng Hu
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - XiaoXu Gao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - DongDong Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - GuoQing Long
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - JingMing Jia
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - AnHua Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
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11
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Sun Z, Zhang Y, Zhou H, Xu J, Gu Q. Diverse diterpenoids and sesquiterpenoids from Siegesbeckia pubescens and their activity against RANKL-induced osteoclastogenesis. Bioorg Chem 2020; 107:104537. [PMID: 33342566 DOI: 10.1016/j.bioorg.2020.104537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/17/2020] [Accepted: 12/04/2020] [Indexed: 10/22/2022]
Abstract
Phytochemical investigation of the aerial parts of Siegesbeckia pubescens led to seventeen diterpenoids (1-17) and twelve sesquiterpenoids (18-29). Their structures were varied including twelve ent-pimarane (1-12), three ent-kaurane (13-15), two acyclic diterpenoids (16-17), ten germacrene (18-27), one guaiane (28), and one caryolane (29) sesquiterpenoids. Eight of twenty-nine were new ones (1, 3, 4, 16-18, 23, and 28). Their structures were elucidated by extensive spectroscopic analysis. The absolute configurations of compounds 1 and 2 were identified using X-ray diffraction analysis, and of compounds 18, 23, and 28 were elucidated by the experimental and calculated electronic circular dichroism (ECD) spectra. All the isolated compounds (1-29) were assayed for their inhibition of RANKL-induced osteoclastogenesis in bone marrow macrophages (BMMs). Four sesquiterpenoids 18, 25, 26, and 27 exhibited potent inhibition of osteoclastogenesis with IC50 value of 0.51, 0.80, 0.50, and 0.83 μM, respectively. Here we demonstrated that S. pubescens may be a resource for discovery of anti-osteoporosis agents.
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Affiliation(s)
- Zhejun Sun
- Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Yuting Zhang
- Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Huihao Zhou
- Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Jun Xu
- Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China.
| | - Qiong Gu
- Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China.
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