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Tori M. Cumulative Data of 1H and 13C NMR Signals and Specific Rotations of Eremophilane Sesquiterpenoids. 2. Bicyclic Eremophilanes (2). Nat Prod Commun 2022. [DOI: 10.1177/1934578x221141172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
1H and 13C NMR signals and specific rotations of eremophilane sesquiterpenoids are cumulated as a series of review articles. In the second chapter of this review, 124 bicyclic eremophilanes without furan or lactone rings (except for epoxides) and with 3-OR functionality (some have OH) are listed in 25 tables. Those bearing long chain acyloxy groups without 3-oxygen functions and some bi- or tri-cyclic compounds are also included in this chapter. These data may help chemists working in the area of natural products chemistry as well as synthetic scientists.
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Affiliation(s)
- Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, Japan
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2
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Liang JJ, Lv TM, Xu ZY, Huang XX, Song SJ. Aquilaria sinensis (Lour.) Spreng: Phytochemical review and Chemotaxonomic values. BIOCHEM SYST ECOL 2022. [DOI: 10.1016/j.bse.2022.104413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tori M, Kuroda C. Chemical Constituents of Ligularia Species (Asteraceae) and Their Diversity in East Asia. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2021; 113:1-247. [PMID: 33721145 DOI: 10.1007/978-3-030-53028-0_1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
More than 100 Ligularia species and those of several related genera (Cremanthodium, Cacalia, Senecio, and others) in the plant family Senecioneae grow in East Asia. For many years, researchers have studied the chemical constituents of these plants, and terpenoids, flavonoids, sterols, alkaloids, and aromatic compounds have been isolated. Among these, in particular, numerous sesquiterpenoids were reported. In this contribution, relevant chemical studies are described mainly from literature reports appearing since 2000, inclusive of investigations performed by the present authors, on the diversity in secondary metabolites of Ligularia growing in the Hengduan Mountains area of China, focusing on eremophilane sesquiterpenoids and other metabolites. Terpenoids and aromatic compounds (totaling 1049), both new and known, are listed. Genetic studies and synthesis investigations are also reviewed briefly.
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Affiliation(s)
- Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, Japan.
| | - Chiaki Kuroda
- Department of Chemistry, Rikkyo University, Tokyo, Japan
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Liu B, Fu S, Zhou C. Naturally occurring [4 + 2] type terpenoid dimers: sources, bioactivities and total syntheses. Nat Prod Rep 2020; 37:1627-1660. [DOI: 10.1039/c9np00037b] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
This review article highlights recent progress on their sources, bioactivities, biosynthetic hypotheses and total chemical syntheses of naturally occurring [4 + 2] type terpenoid dimers.
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Affiliation(s)
- Bo Liu
- Key Laboratory of Green Chemistry & Technology of the Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu
- China
| | - Shaomin Fu
- Key Laboratory of Green Chemistry & Technology of the Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu
- China
| | - Chengying Zhou
- Key Laboratory of Green Chemistry & Technology of the Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu
- China
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Inose K, Tanaka K, Yamada T, Koshino H, Hashimoto M. Isolation of Peribysins O, P, and Q from Periconia macrospinosa KT3863 and Configurational Reinvestigation of Peribysin E Diacetate from Periconia byssoides OUPS-N133. JOURNAL OF NATURAL PRODUCTS 2019; 82:911-918. [PMID: 30767529 DOI: 10.1021/acs.jnatprod.8b01001] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Peribysins O (1), P (3), and Q (4) were isolated from Periconia macrospinosa KT3863. The relative configuration of the 6,7-epoxide of 1 was elucidated by performing quantitative NOE experiments. The structure of 2, which is a tautomer of 1 present in CDCl3 solutions in 5% abundance, was also fully characterized by NMR analysis. Their absolute configurations were independently determined by the modified Mosher's method (for 1 and 3), the electronic circular dichroism (ECD) exciton coupling theory after conversion into dibenzoate 9 (for 3), and theoretical ECD calculations (for 1, 3, and 4). The obtained relative structures 1, 3, and 4 were verified by calculating their 13C chemical shifts using density functional theory (DFT). Although the established (4 S)-enantiomer for 1-4 is in accordance with that of other peribysins isolated from the related fungus Periconia byssoides OUPS-N133, Danishefsky's total synthesis of peribysin E (5) led to the subsequent revision of the (2 R,4 S,5 R,6 S,7 S,8 R,10 S)-enantiomer to the (2 S,4 R,5 S,6 R,7 R,8 S,10 R)-enantiomer. This discordance led us to reinvestigate the configuration using time-dependent DFT-based ECD spectral calculations, which supported the original (4 S)-enantiomer.
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Affiliation(s)
- Kota Inose
- Faculty of Agriculture and Life Science , Hirosaki University , 3-Bunkyo-cho , Hirosaki , 036-8561 , Japan
| | - Kazuaki Tanaka
- Faculty of Agriculture and Life Science , Hirosaki University , 3-Bunkyo-cho , Hirosaki , 036-8561 , Japan
| | - Takeshi Yamada
- Osaka University of Pharmaceutical Sciences , 4-20-1, Nasahara , Takatsuki, Osaka , 569-1094 , Japan
| | - Hiroyuki Koshino
- RIKEN Center for Sustainable Resource Science , Wako , 351-0198 , Japan
| | - Masaru Hashimoto
- Faculty of Agriculture and Life Science , Hirosaki University , 3-Bunkyo-cho , Hirosaki , 036-8561 , Japan
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Ye Y, Dawa D, Liu GH, Zhao M, Tseden D, Gu YC, Ding LS, Cao ZX, Zhou Y. Antiproliferative Sesquiterpenoids from Ligularia rumicifolia with Diverse Skeletons. JOURNAL OF NATURAL PRODUCTS 2018; 81:1992-2003. [PMID: 30212198 DOI: 10.1021/acs.jnatprod.8b00197] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Twenty-two new sesquiterpenoids with four skeletal types and 15 known analogues were isolated from the whole plants of Ligularia rumicifolia. The structures of the isolates were elucidated based on comprehensive spectroscopic data analysis. Compound 1 is a C14 nor-sesquiterpenoid featuring a 6/6/6 tricyclic skeleton with a 9,13-ether bridge. The absolute configuration of 2 was established through single-crystal X-ray diffraction data. Compounds 13-16 exhibited in vitro antiproliferative activity against the four human tumor cell lines A-549, HGC-27, HeLa, and MV4-11. Specifically, compounds 13 and 16 showed antiproliferative activity against the MV4-11 cell line with IC50 values of 0.5 ± 0.2 and 1.1 ± 0.5 μM, respectively.
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Affiliation(s)
- Ye Ye
- Chengdu Institute of Biology, Chinese Academy of Sciences , Chengdu 610041 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Drolma Dawa
- Tibet Autonomous Region Institute for Food and Drug Control , Lhasa 850000 , People's Republic of China
| | - Guang-Hui Liu
- Chengdu Institute of Biology, Chinese Academy of Sciences , Chengdu 610041 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Min Zhao
- Chengdu Institute of Biology, Chinese Academy of Sciences , Chengdu 610041 , People's Republic of China
| | - Dorje Tseden
- Tibet Autonomous Region Institute for Food and Drug Control , Lhasa 850000 , People's Republic of China
| | - Yu-Cheng Gu
- Syngenta Jealott's Hill International Research Centre, Berkshire RG42 6EY , U.K
| | - Li-Sheng Ding
- Chengdu Institute of Biology, Chinese Academy of Sciences , Chengdu 610041 , People's Republic of China
| | - Zhi-Xing Cao
- Pharmacy College , Chengdu University of Traditional Chinese Medicine , Chengdu 611137 , People's Republic of China
| | - Yan Zhou
- Chengdu Institute of Biology, Chinese Academy of Sciences , Chengdu 610041 , People's Republic of China
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Agulló-Ortuño MT, Díaz CE, González-Coloma A, Reina M. Structure-Dependent Cytotoxic Effects of Eremophilanolide Sesquiterpenes. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The aim of this research was to determine the cytotoxic action of sixteen structurally-related eremophilane-type sesquiterpenes, isolated from several species of Senecio, against a panel of cancer cell lines. The cytotoxic activities were evaluated by WST-1 test and the IC50 values calculated. The investigated compounds exerted dose-dependent cytotoxic actions against selected cancer cell lines and no-tumoral HS5 cell line. The comparative structure-activity relationships demonstrated the importance of C-1, C-6, and C-8 substituents in the molecule. Our results show that eremophilane-type sesquiterpenes may represent an important source of novel potential antitumor agents due to their pronounced cytotoxic actions towards malignant cells.
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Affiliation(s)
- M. Teresa Agulló-Ortuño
- Laboratory of Translational Oncology, Instituto de Investigación Hospital 12 de Octubre, 28041 Madrid, Spain
| | - Carmen E. Díaz
- Instituto de Productos Naturales y Agrobiología, CSIC, 38206 La Laguna, Tenerife, Spain
| | | | - Matías Reina
- Instituto de Productos Naturales y Agrobiología, CSIC, 38206 La Laguna, Tenerife, Spain
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Tori M. [Diversity of Plants Belonging to the Genus Ligularia (Asteraceae) Based on Terpenoids and Synthetic Studies on Some Terpenoids]. YAKUGAKU ZASSHI 2016; 136:309-27. [PMID: 26831809 DOI: 10.1248/yakushi.15-00238] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The terpenoid constituents of Ligularia virgaurea (30 samples), Ligularia pleurocaulis (8 samples), Ligularia dictyoneura (8 samples), Ligularia brassicoides (5 samples), Ligularia lingiana (1 sample), and Ligularia liatroides (1 sample)(all belonging to section Senecillis of Ligularia, Asteraceae and collected in Yunnan, Sichuan, Qinghai, and Gansu provinces, China), from which 220 compounds were isolated, including 113 novel ones, are reviewed. Five chemotypes were identified in L. virgaurea based on their chemical constituents, while three clades were detected from the base sequences. Although intra-specific diversity was found in L. virgaurea, more samples were needed of other species in order to reach a definite conclusion. Inter-specific diversity was also examined in section Senecillis but was restricted due to the scarcity of samples. Synthetic studies on chiral natural products to determine their absolute configurations, especially those of riccardiphenols A and B as well as crispatanolide, which were all isolated from the liverwort, are briefly reviewed.
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Affiliation(s)
- Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University
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Wu L, Liao Z, Liu C, Jia H, Sun J. Eremophilane Sesquiterpenes from the GenusLigularia. Chem Biodivers 2016; 13:645-71. [DOI: 10.1002/cbdv.201500169] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 09/25/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Ling Wu
- Department of Pharmaceutical Engineering; School of Chemistry and Chemical Engineering; Southeast University; Nanjing 211189 P. R. China
| | - Zhixin Liao
- Department of Pharmaceutical Engineering; School of Chemistry and Chemical Engineering; Southeast University; Nanjing 211189 P. R. China
| | - Chao Liu
- Institute of Agro-Food Science and Technology; Shangdong Academy of Agricultural Sciences; 202 Gongyue North Road Jinan 250110 P. R. China
| | - Haiyang Jia
- Department of Pharmaceutical Engineering; School of Chemistry and Chemical Engineering; Southeast University; Nanjing 211189 P. R. China
| | - Jinyue Sun
- Institute of Agro-Food Science and Technology; Shangdong Academy of Agricultural Sciences; 202 Gongyue North Road Jinan 250110 P. R. China
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