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Zhang ZY, Li Y, Yu JH, Zhao JX, Yue JM. Lauinoids A-X: Labdane-type diterpenoids with anti-inflammatory activity from Croton laui. PHYTOCHEMISTRY 2024; 223:114138. [PMID: 38762154 DOI: 10.1016/j.phytochem.2024.114138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 05/08/2024] [Accepted: 05/12/2024] [Indexed: 05/20/2024]
Abstract
Croton laui (Euphorbiaceae) is a traditional medicinal plant used by the Li ethnic group in China to treat headaches, stomachaches, and diphtheria. To understand the pharmacological basis of its medicinal use, an extensive investigation of the ethanolic extract of the bark of C. laui was performed. After repeated chromatography, twenty-four undescribed labdane-type diterpenoids, lauinoids A-X (1-24), and five known analogs (25-29) were isolated. Their structures and absolute configurations were established using a combination of spectroscopic analyses, electronic circular dichroism, nuclear magnetic resonance calculations, and single-crystal X-ray diffraction. Among them, compounds 1-3 exhibited an 11(12 → 13)-abeo-16-nor-labdane skeleton, which originated putatively from 9 through a plausible pathway that involves a semipinacol rearrangement process. Compounds 11 and 12 belong to the rare class of 14,15-dinor-labdane diterpenoids. Compounds 18 and 28 exhibited substantial inhibitory effects by suppressing lipopolysaccharide-induced NO production in RAW 264.7 macrophages, with IC50 values of 3.37 ± 0.23 and 5.82 ± 0.28 μM, respectively. This study has greatly expanded the chemical diversity of labdane diterpenoids from C. laui and will guide future research on this ethnomedicinal plant.
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Affiliation(s)
- Zong-Yi Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, People's Republic of China
| | - Ying Li
- Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, 198 East Binhai Road, Yantai, Shandong, 264117, People's Republic of China
| | - Jin-Hai Yu
- Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, 198 East Binhai Road, Yantai, Shandong, 264117, People's Republic of China
| | - Jin-Xin Zhao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China; Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, 198 East Binhai Road, Yantai, Shandong, 264117, People's Republic of China.
| | - Jian-Min Yue
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, People's Republic of China; Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, 198 East Binhai Road, Yantai, Shandong, 264117, People's Republic of China.
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Li F, Zhang DB, Li JT, He FJ, Zhu HL, Li N, Xiao XC, Ren L, Zheng W. Bioactive terpenoids from Croton laui. Nat Prod Res 2019; 35:2849-2857. [PMID: 31596143 DOI: 10.1080/14786419.2019.1675062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Two new highly-oxygenated neo-clerodane diterpenoids, 3S-acetoxyl-mollotucin D dilactone ester (1) and 6S-crotoeurin C (2), and a new lupane-type triterpene, 16β-hydroxyl-3β-O-trans-coumaroyl-betulin (6), as well as three known analogues (3-5) were obtained from the leaves of Croton laui. The structures of the new compounds were determined by extensive spectroscopic methods, and their absolute configurations were determined by combination of single-crystal X-ray diffraction analysis, electronic circular dichroism (ECD) spectra, and literature data. Compounds 2 and 3 exhibited inhibitory activities of lipopolysaccharide (LPS)-induced nitric oxide (NO) production in RAW 264.7 macrophages with IC50 values of 1.2 and 1.6 μM, respectively. Additionally, compound 6 exhibited activity against Col205 and HepG2 cell lines with IC50 values of 12.9 and 17.7 μM, respectively.
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Affiliation(s)
- Fei Li
- Shaanxi University of Chinese Medicine, Xianyang, P.R. China
| | - Dong-Bo Zhang
- Shaanxi University of Chinese Medicine, Xianyang, P.R. China.,Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi University of Chinese Medicine, Xianyang, P.R. China
| | - Jing-Tao Li
- The Affiliated Hospital to Shaanxi University of Chinese Medicine, Xianyang, P.R. China
| | - Feng-Jie He
- Shaanxi University of Chinese Medicine, Xianyang, P.R. China
| | - Hong-Li Zhu
- The Affiliated Hospital to Shaanxi University of Chinese Medicine, Xianyang, P.R. China
| | - Nan Li
- Shaanxi University of Chinese Medicine, Xianyang, P.R. China
| | - Xin-Chun Xiao
- Shaanxi University of Chinese Medicine, Xianyang, P.R. China
| | - Li Ren
- Shaanxi University of Chinese Medicine, Xianyang, P.R. China
| | - Wei Zheng
- Xi'an Employees's University, Xi'an, P.R. China
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Chemical Constituents from Croton Species and Their Biological Activities. Molecules 2018; 23:molecules23092333. [PMID: 30213129 PMCID: PMC6225158 DOI: 10.3390/molecules23092333] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/07/2018] [Accepted: 09/10/2018] [Indexed: 12/12/2022] Open
Abstract
The genus Croton belongs to the Euphorbiaceae family, which comprises approximately 1300 species. Many Croton species have been used as folk medicines. This review focuses on the chemical constituents from Croton species and their relevant biological activities, covering the period from 2006 to 2018. A total of 399 new compounds, including 339 diterpenoids, were reported. Diterpenoids are characteristic components of the Croton species. These isolated compounds exhibited a broad spectrum of bioactivities, including cytotoxic, anti-inflammatory, antifungal, acetylcholinesterase inhibitory, and neurite outgrowth-promoting properties. The present review provides a significant clue for further research of the chemical constituents from the Croton species as potential medicines.
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Shen T, Qian H, He YL, Li LM, Wang YD. Longifodiol, a Novel Rearranged Triquinane Norsesquiterpene from the Root of Leontopodium Longifolium. CHEM LETT 2018. [DOI: 10.1246/cl.171046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tong Shen
- College of Chemistry and Bioengineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Han Qian
- College of Chemistry and Bioengineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Yi-Lin He
- College of Chemistry and Bioengineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Le-Mei Li
- College of Chemistry and Bioengineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Yong-Dong Wang
- College of Chemistry and Bioengineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
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Abstract
This review covers the isolation and chemistry of diterpenoids from terrestrial as opposed to marine sources and includes labdanes, clerodanes, abietanes, pimaranes, kauranes, cembranes and their cyclization products. The literature from January to December, 2016 is reviewed.
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