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Li H, Tang Y, Liang KY, Zang Y, Osman EEA, Jin ZX, Li J, Xiong J, Li J, Hu JF. Phytochemical and biological studies on rare and endangered plants endemic to China. Part XXII. Structurally diverse diterpenoids from the leaves and twigs of the endangered conifer Torreya jackii and their bioactivities. PHYTOCHEMISTRY 2022; 198:113161. [PMID: 35283166 DOI: 10.1016/j.phytochem.2022.113161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 03/04/2022] [Accepted: 03/04/2022] [Indexed: 06/14/2023]
Abstract
A phytochemical investigation on the MeOH extract of the leaves and twigs of the endangered conifer Torreya jackii Chun led to the isolation and characterization of 21 structurally diverse diterpenoids. Among them, six are previously undescribed, including four abietane-type (torreyins A-D, resp.) and two labdane-type diterpenoids (torreyins E and F). Their structures and absolute configurations were determined by a combination of spectroscopic methods, calculated/experimental electronic circular dichroism (ECD) data, and single-crystal X-ray diffraction analyses. In particular, torreyins A-C are rare 11,12-seco-abietane type diterpenoids possessing a dilactone moiety, and their biosynthetic pathway starting from a co-occurring abietane derivative (i.e., cyrtophyllone B) was briefly proposed. Among the isolates, 7-oxo-dehydroabietic acid and 15-methoxy-7,13-abietadien-18-oic acid showed considerable inhibitory effects against acetyl-coenzyme A carboxylase 1 (ACC1) and protein tyrosine phosphatase 1 B (PTP1B), with IC50 values of 3.1 and 6.8 μM, respectively.
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Affiliation(s)
- Hao Li
- Institute of Natural Medicine and Health Products, School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China; School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Yu Tang
- School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Kai-Yuan Liang
- Institute of Natural Medicine and Health Products, School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China; School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Yi Zang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai, 201203, PR China
| | - Ezzat E A Osman
- School of Pharmacy, Fudan University, Shanghai, 201203, PR China; Department of Biochemistry, Molecular Biology and Medicinal Chemistry, Theodor Bilharz Research Institute, P. O. Box 30 Imbaba, Giza, 12411, Egypt
| | - Ze-Xin Jin
- Institute of Natural Medicine and Health Products, School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai, 201203, PR China
| | - Juan Xiong
- School of Pharmacy, Fudan University, Shanghai, 201203, PR China.
| | - Junmin Li
- Institute of Natural Medicine and Health Products, School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China.
| | - Jin-Feng Hu
- Institute of Natural Medicine and Health Products, School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China; School of Pharmacy, Fudan University, Shanghai, 201203, PR China.
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Chemical constituents from the fruits of Vitex trifolia L. (Verbenaceae) and their chemotaxonomic significance. BIOCHEM SYST ECOL 2021. [DOI: 10.1016/j.bse.2021.104305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kim JG, Lee JW, Le TPL, Han JS, Kwon H, Lee D, Hong JT, Kim Y, Lee MK, Hwang BY. Diterpenoids and Diacetylenes from the Roots of Aralia cordata with Inhibitory Effects on Nitric Oxide Production. JOURNAL OF NATURAL PRODUCTS 2021; 84:230-238. [PMID: 33476145 DOI: 10.1021/acs.jnatprod.0c00842] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Bioactivity-guided isolation of a MeOH extract of Aralia cordata led to the isolation of four new ent-pimarane diterpenoids (1-4) and a diacetylene (5) together with 21 known compounds (6-26). Their structures were established based on the interpretation of one- and two-dimensional NMR and HRESIMS data. The absolute configurations of the new isolates were determined by electronic circular dichroism data analysis, single crystal X-ray diffraction, and Mosher's esterification method. All compounds exhibited inhibitory effects on lipopolysaccharide-induced nitric oxide production in RAW 264.7 macrophages with IC50 values ranging from 1.1 to 69.4 μM.
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Affiliation(s)
- Jun Gu Kim
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
| | - Jin Woo Lee
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
| | - Thi Phuong Linh Le
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
| | - Jae Sang Han
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
| | - Haeun Kwon
- Department of Plant Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Korea
| | - Dongho Lee
- Department of Plant Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Korea
| | - Jin Tae Hong
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
| | - Youngsoo Kim
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
| | - Mi Kyeong Lee
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
| | - Bang Yeon Hwang
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
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Wu XD, Ding LF, Chen B, Li XN, Peng LY, Zhao QS. Cunlanceloic acids A–D: unprecedented labdane diterpenoid dimers with AChE inhibitory and cytotoxic activities from Cunninghamia lanceolata. Org Chem Front 2021. [DOI: 10.1039/d1qo00999k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four unprecedented labdane diterpenoid dimers with new carbon skeletons, cunlanceloic acids A–D (1–4), were isolated from the cones of Cunninghamia lanceolata.
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Affiliation(s)
- Xing-De Wu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Lin-Fen Ding
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming 650500, People's Republic of China
| | - Bin Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Li-Yan Peng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Qin-Shi Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
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Antiviral Activities of Compounds Isolated from Pinus densiflora (Pine Tree) against the Influenza A Virus. Biomolecules 2020; 10:biom10050711. [PMID: 32375402 PMCID: PMC7278015 DOI: 10.3390/biom10050711] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 04/27/2020] [Accepted: 04/29/2020] [Indexed: 12/13/2022] Open
Abstract
Pinus densiflora was screened in an ongoing project to discover anti-influenza candidates from natural products. An extensive phytochemical investigation provided 26 compounds, including two new megastigmane glycosides (1 and 2), 21 diterpenoids (3–23), and three flavonoids (24–26). The chemical structures were elucidated by a series of chemical reactions, including modified Mosher’s analysis and various spectroscopic measurements such as LC/MS and 1D- and 2D-NMR. The anti-influenza A activities of all isolates were screened by cytopathic effect (CPE) inhibition assays and neuraminidase (NA) inhibition assays. Ten candidates were selected, and detailed mechanistic studies were performed by various assays, such as Western blot, immunofluorescence, real-time PCR and flow cytometry. Compound 5 exerted its antiviral activity not by direct neutralizing virion surface proteins, such as HA, but by inhibiting the expression of viral mRNA. In contrast, compound 24 showed NA inhibitory activity in a noncompetitive manner with little effect on viral mRNA expression. Interestingly, both compounds 5 and 24 were shown to inhibit nitric oxide (NO) production and inducible nitric oxide synthase (iNOS) expression in a dose-dependent manner. Taken together, these results provide not only the chemical profiling of P. densiflora but also anti-influenza A candidates.
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Tang T, Li CH, Li DS, Jing SX, Hua J, Luo SH, Liu Y, Li SH. Peltate glandular trichomes of Colquhounia vestita harbor diterpenoid acids that contribute to plant adaptation to UV radiation and cold stresses. PHYTOCHEMISTRY 2020; 172:112285. [PMID: 32035325 DOI: 10.1016/j.phytochem.2020.112285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 01/27/2020] [Accepted: 01/27/2020] [Indexed: 05/11/2023]
Abstract
Plant glandular trichomes (GTs) are adaptive epidermal structures that synthesize and accumulate diverse specialized metabolites well-known as defense chemicals against biotic attacks, but their roles against abiotic challenges including UV radiation and cold climates remain largely unexplored. Colquhounia vestita Wall is a Chinese-Himalayan Lamiaceae plant with dense peltate and capitate GTs on its leaf and stem surfaces under a scanning electron microscope. Three diterpenoid acids, including a clerodane 5-epi-hardwickiic acid and two labdanes polyalthic acid and E-communic acid, were identified from the peltate GTs of C. vestita through laser microdissection coupled with UPLC-MS/MS. Under UV radiation and cold stresses, the major GT component polyalthic acid increased the biomass of Arabidopsis thaliana seedlings and decreased their malondialdehyde content. Furthermore, polyalthic acid promoted photosynthetic efficiency and the expression of genes encoding peroxidative enzymes under UV radiation, and stimulated Ca2+ elevation and the expression of calmodulin binding transcription activator gene CAMTA3 and two downstream cold-responsive genes CBF3 and RD29A under cold stress. Therefore, polyalthic acid in GTs is likely to endow the plant with enhanced tolerance to UV radiation and cold stresses, which extends the current understanding of the function of GT compounds in plant adaptation to abiotic environments.
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Affiliation(s)
- Ting Tang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China
| | - Chun-Huan Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China
| | - De-Sen Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Shu-Xi Jing
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China
| | - Juan Hua
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China
| | - Shi-Hong Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China
| | - Yan Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China.
| | - Sheng-Hong Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China.
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Yu JH, Yu ZP, Wu DX, Yan X, Wang YY, Zhang H. Cuceolatins A-D: New Bioactive Diterpenoids from the Leaves of Cunninghamia lanceolata. Chem Biodivers 2019; 16:e1900317. [PMID: 31264344 DOI: 10.1002/cbdv.201900317] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 07/02/2019] [Indexed: 11/09/2022]
Abstract
Four new diterpenoids named cuceolatins A-D, including three labdane-type (1-3) and one abietane-type (4) as well as three known labdane analogs (5-7), were reported from the leaves of Cunninghamia lanceolata. Structural assignments for these compounds were conducted by analyses of spectroscopic data, and their absolute configurations were determined by time-dependent density functional theory (TD-DFT) based electronic circular dichroism (ECD) calculations. Among them, the abietane-type diterpenoid (11-hydroxy-12-methoxyabieta-8,11,13-trien-3-one (4)) showed significant cytotoxicity against human MDA-MB-231, MCF-7, and HeLa tumor cell lines with IC50 measurements of 4.3, 2.8 and 4.5 μm, respectively, while the labdane-type diterpenoids with a 4α-carboxy group (1-3 and 5) exhibited moderate antibacterial activity towards Bacillus subtilis and Staphylococcus aureus with IC50 values all below 25 μm.
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Affiliation(s)
- Jin-Hai Yu
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, P. R. China
| | - Zhi-Pu Yu
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, P. R. China.,School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, P. R. China
| | - Dong-Xiang Wu
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, P. R. China
| | - Xue Yan
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, P. R. China.,School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, P. R. China
| | - Yin-Yin Wang
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, P. R. China
| | - Hua Zhang
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, P. R. China
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Zhao S, Ling J, Li Z, Wang S, Hu J, Wang N. Nine new diterpenes from the leaves of plantation-grown Cunninghamia lanceolata. Bioorg Med Chem Lett 2015; 25:1483-9. [DOI: 10.1016/j.bmcl.2015.02.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 02/02/2015] [Accepted: 02/12/2015] [Indexed: 11/26/2022]
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10
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Gao H, Zhu T, Li D, Gu Q, Liu W. Prenylated indole diketopiperazine alkaloids from a mangrove rhizosphere soil derived fungus Aspergillus effuses H1-1. Arch Pharm Res 2013; 36:952-6. [DOI: 10.1007/s12272-013-0107-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 03/20/2013] [Indexed: 10/27/2022]
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Xu X, Zhang W, Yao C, Cao X, Xue S. [Quantitative analysis of hinokiol from cell suspension cultures of Cephalotaxus fortunei]. Se Pu 2012; 29:567-70. [PMID: 22032171 DOI: 10.3724/sp.j.1123.2011.00567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
A high performance liquid chromatography (HPLC) method was developed for the separation of secondary metabolites and quantitative analysis of hinokiol from cell suspension cultures of Cephalotaxus fortunei. The samples were prepared by extraction using methanol followed by partitioning between ammonium hydroxide and chloroform. The HPLC separation was achieved on an Apollo C18 column (250 mm x 4.6 mm, 5 microm) with gradient elution using methanol and water at 1 mL/min and 30 degrees C. The detection was carried out at 290 nm. A good linear correlation between the hinokiol peak area and mass concentration was observed over the mass concentration range of 0.012 5 - 0.2 g/L. The proposed method was applied to the determination of hinokiol in the actual samples with recoveries of 87.2% - 94.7% and with the relative standard deviations of 0.9% - 4.2%. This method is reliable and reproducible and is suitable for the analysis of hinokiol in plant cell cultures.
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Affiliation(s)
- Xiaohui Xu
- Marine Bioproducts Engineering Group, Dalian Institute of Chemical Physics, Chinese Academy of Science Dalian 116023, China
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Gao H, Liu W, Zhu T, Mo X, Mándi A, Kurtán T, Li J, Ai J, Gu Q, Li D. Diketopiperazine alkaloids from a mangrove rhizosphere soil derived fungus Aspergillus effuses H1-1. Org Biomol Chem 2012; 10:9501-6. [DOI: 10.1039/c2ob26757h] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hou XF, Yao S, Mándi A, Kurtán T, Tang CP, Ke CQ, Li XQ, Ye Y. Bicunningines A and B, Two New Dimeric Diterpenes from Cunninghamia lanceolata. Org Lett 2011; 14:460-3. [DOI: 10.1021/ol202915r] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xian-Feng Hou
- State Key Laboratory of Drug Research and SIMM-CUHK Joint Research Laboratory of Promoting Globlization of Traditional Chinese Medicines, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China, and Department of Organic Chemistry, University of Debrecen, POB 20, H-4010 Debrecen, Hungary
| | - Sheng Yao
- State Key Laboratory of Drug Research and SIMM-CUHK Joint Research Laboratory of Promoting Globlization of Traditional Chinese Medicines, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China, and Department of Organic Chemistry, University of Debrecen, POB 20, H-4010 Debrecen, Hungary
| | - Attila Mándi
- State Key Laboratory of Drug Research and SIMM-CUHK Joint Research Laboratory of Promoting Globlization of Traditional Chinese Medicines, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China, and Department of Organic Chemistry, University of Debrecen, POB 20, H-4010 Debrecen, Hungary
| | - Tibor Kurtán
- State Key Laboratory of Drug Research and SIMM-CUHK Joint Research Laboratory of Promoting Globlization of Traditional Chinese Medicines, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China, and Department of Organic Chemistry, University of Debrecen, POB 20, H-4010 Debrecen, Hungary
| | - Chun-Ping Tang
- State Key Laboratory of Drug Research and SIMM-CUHK Joint Research Laboratory of Promoting Globlization of Traditional Chinese Medicines, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China, and Department of Organic Chemistry, University of Debrecen, POB 20, H-4010 Debrecen, Hungary
| | - Chang-Qiang Ke
- State Key Laboratory of Drug Research and SIMM-CUHK Joint Research Laboratory of Promoting Globlization of Traditional Chinese Medicines, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China, and Department of Organic Chemistry, University of Debrecen, POB 20, H-4010 Debrecen, Hungary
| | - Xi-Qiang Li
- State Key Laboratory of Drug Research and SIMM-CUHK Joint Research Laboratory of Promoting Globlization of Traditional Chinese Medicines, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China, and Department of Organic Chemistry, University of Debrecen, POB 20, H-4010 Debrecen, Hungary
| | - Yang Ye
- State Key Laboratory of Drug Research and SIMM-CUHK Joint Research Laboratory of Promoting Globlization of Traditional Chinese Medicines, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China, and Department of Organic Chemistry, University of Debrecen, POB 20, H-4010 Debrecen, Hungary
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Xiao ZY, Wang XC, Zhang GP, Huang ZL, Hu LH. Terpenoids from Roots ofChloranthus spicatus. Helv Chim Acta 2010. [DOI: 10.1002/hlca.200900299] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Arai M, Kobatake E, Koyano T, Kowithayakorn T, Kato S, Ishibashi M. A Method for the Rapid Discovery of Naturally Occurring Products by Proteins Immobilized on Magnetic Beads and Reverse Affinity Chromatography. Chem Asian J 2009; 4:1802-1808. [DOI: 10.1002/asia.200900357] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Lee CK, Yeh MH, Lee TH, Chiu HL, Kuo YH. Four New Lignans with a Bicyclo[3.3.1]nonadienemethanol Skeleton fromCunninghamia lanceolata. Helv Chim Acta 2009. [DOI: 10.1002/hlca.200900082] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Oikawa H, Tokiwano T. Enzymatic catalysis of the Diels–Alder reaction in the biosynthesis of natural products. Nat Prod Rep 2004; 21:321-52. [PMID: 15162222 DOI: 10.1039/b305068h] [Citation(s) in RCA: 203] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recent studies on enzymes catalyzing the Diels- Alder reaction. often named "Diels-Alderases", clearlydemonstrated the involvement of this synthetically useful reaction in the biosynthesis of natural products.This review covers natural Diels-Alder type cycloadducts. synthetic efforts on the chemical feasibility ofthe biosynthctic Diels - Alder reaction and a brief history of studies on Diels-Alderases. In addition,reaction mechanisms of artificial and natural Diels--Alderases are discussed.
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Affiliation(s)
- Hideaki Oikawa
- Division of Chemistry, Graduate School of Science, Hokkaido University, Kita-ku Kita 10 Jo Nishi 8 Chome, Sapporo 060-0810, Japan
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Akihisa T, Yasukawa K, Tokuda H. Potentially Cancer Chemopreventive And Anti-Inflammatory Terpenoids From Natural Sources. BIOACTIVE NATURAL PRODUCTS (PART J) 2003. [DOI: 10.1016/s1572-5995(03)80005-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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