1
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Tori M. Cumulative Data of 1H and 13C NMR Signals and Specific Rotations of Eremophilane Sesquiterpenoids. 1. Bicyclic Eremophilanes (1). Nat Prod Commun 2022. [DOI: 10.1177/1934578x221109527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
1H and 13C Nuclear Magnetic Resonance (NMR) signals and specific rotations of eremophilane sesquiterpenoids are cumulated as a series of review articles. In the first chapter of this review, 332 bicyclic eremophilanes, namely with no furan or lactone rings (except for epoxides), without 3-OR functionality (except for hydroxy, acetoxy, and carbonyl) are listed in tables. 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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Hanai R, Okamoto Y, Hashida T, Shiojiri K, Ohsaki A, Saito Y, Tori M, Gong X, Kuroda C. Chemical and Genetic Diversity of Ligularia kanaitzensis in the Hengduan Mountains Area. Chemical Relationship with L. subspicata. Chem Biodivers 2021; 18:e2100444. [PMID: 34605603 DOI: 10.1002/cbdv.202100444] [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] [Received: 06/07/2021] [Accepted: 10/04/2021] [Indexed: 11/06/2022]
Abstract
Root chemicals and the sequences of the internal transcribed spacers (ITSs) were analyzed for 9 Ligularia kanaitzensis and 3 L. subspicata samples collected in northwestern Yunnan and southwestern Sichuan, China. Subspicatins A and C were isolated from two L. kanaitzensis samples. Introgression of genes responsible for these compounds from L. subspicata was suggested by their strong connection with L. subspicata/L. lamarum and the geographical proximity of the samples to L. subspicata. DNA analysis of a set of 27 L. kanaitzensis samples including those analyzed previously showed that they belong to two clades, designated A and B. Together with the presence/absence of furanoeremophilane, the 27 samples were sorted into three groups: clade A/furan, clade B/furan, and clade B/non-furan. The ancestral plant presumably belonged to clade B/non-furan, because furanoeremophilanes are biosynthesized from eremophilan-8-ones. 1β-Angeloyloxyfukinone, a likely intermediate between fukinone and subspicatin C, was isolated for the first time. This finding allowed us to propose plausible biosynthetic pathways of subspicatins A and C.
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Affiliation(s)
- Ryo Hanai
- Department of Life Science and Research Center of Life Science, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
| | - Yasuko Okamoto
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514, Japan
| | - Takuya Hashida
- Department of Chemistry, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
| | - Kosuzu Shiojiri
- Department of Chemistry, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
| | - Ayumi Ohsaki
- College of Humanities and Sciences, Nihon University, Sakurajosui, Setagaya-ku, Tokyo, 156-8550, Japan
| | - Yoshinori Saito
- Graduate School of Biomedical Sciences, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514, Japan
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China
| | - Chiaki Kuroda
- Department of Chemistry, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan
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3
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Arizmendi N, Qian H, Li Y, Kulka M. Sesquiterpene-Loaded Co-Polymer Hybrid Nanoparticle Effects on Human Mast Cell Surface Receptor Expression, Granule Contents, and Degranulation. NANOMATERIALS 2021; 11:nano11040953. [PMID: 33917960 PMCID: PMC8068390 DOI: 10.3390/nano11040953] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/16/2021] [Accepted: 03/23/2021] [Indexed: 12/19/2022]
Abstract
Biodegradable polymeric nanoparticles (NPs) such as poly(lactic-co-glycolic acid) (PLGA) and polyvinyl alcohol (PVA) have been used as drug delivery systems for natural and synthetic compounds and are designed to control the loading and release of biodegradable materials to target cells, tissues, and organs. Eremophilane-type sesquiterpenes have anti-inflammatory properties but are lipophilic, cytotoxic, and not biocompatible with many cells. To determine whether biodegradable PLGA/PVA could improve the biocompatibility of sesquiterpenes, sesquiterpene-loaded NPs were synthesized and their effects on human mast cells (LAD2), the major effector cells of allergic inflammation, were determined. NPs composed of PLGA/PVA and two types of sesquiterpenes (fukinone, PLGA/PVA-21 and 10βH-8α,12-epidioxyeremophil-7(11)-en-8β-ol, PLGA/PVA-22) were produced using a microfluidic synthesis method. The NPs’ size distribution and morphology were evaluated by dynamic light scattering and cryogenic transmission electron microscopy (TEM). PLGA/PVA-21 and PLGA/PVA-22 were 60 to 70 nm and were readily internalized by LAD2 as shown by flow cytometry, fluorescence microscopy, and TEM. While unencapsulated sesquiterpenes decreased LAD2 cell viability by 20%, PLGA/PVA-21 and PLGA/PVA-22 did not alter LAD2 viability, showing that encapsulation improved the biocompatibility of the sesquiterpenes. PLGA/PVA-21 and PLGA/PVA-22 decreased the expression of genes encoding the subunits of the high affinity immunoglobulin E receptor (FcεR1α, FcεR1β, FcεR1γ) and the stem cell factor receptor (Kit,), suggesting that hybrid NPs could alter mast cell responses to antigens and shift their maturation. Similarly, PLGA/PVA-21 and PLGA/PVA-22 inhibited tryptase expression but had no effect on chymase expression, thereby promoting a shift to the tryptase-positive phenotype (MCT). Lastly, PLGA/PVA-21 and PLGA/PVA-22 inhibited mast cell degranulation when the LAD2 cells were activated by IgE crosslinking and FcεRI. Overall, our results suggest that PLGA/PVA-21 and PLGA/PVA-22 alter human mast cell phenotype and activation without modifying viability, making them a more biocompatible approach than treating cells with sesquiterpenes alone.
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Affiliation(s)
- Narcy Arizmendi
- Nanotechnology Research Centre, National Research Council Canada, Edmonton, AB TG6 2M9, Canada; (N.A.); (H.Q.)
- Department of Medical Microbiology and Immunology, Faculty of Medicine, University of Alberta, Edmonton, AB T6G 2S2, Canada
| | - Hui Qian
- Nanotechnology Research Centre, National Research Council Canada, Edmonton, AB TG6 2M9, Canada; (N.A.); (H.Q.)
| | - Yiming Li
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 250014, China;
| | - Marianna Kulka
- Nanotechnology Research Centre, National Research Council Canada, Edmonton, AB TG6 2M9, Canada; (N.A.); (H.Q.)
- Department of Medical Microbiology and Immunology, Faculty of Medicine, University of Alberta, Edmonton, AB T6G 2S2, Canada
- Correspondence: ; Tel.: +1-780-641-1687; Fax: +1-780-641-1601
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4
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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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5
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Okamoto Y, Fukui A, Hashida T, Shiojiri K, Kuroda C, Tori M, Gong X, Hanai R. Chemical Composition of Intergeneric Hybrids Between Ligularia and Cremanthodium Collected in Sichuan Province of China. Nat Prod Commun 2019. [DOI: 10.1177/1934578x19878931] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Two intergeneric hybrids between Ligularia nelumbifolia and Cremanthodium stenoglossum were examined with respect to the chemical composition of root extracts and the sequences of neutral DNA regions. The DNA data showed that the direction of hybridization was different between the individuals. Eremophilane sesquiterpenes were found in both hybrids and deduced to have come from their Cremanthodium parents, because sesquiterpenes were detected in C. stenoglossum but not in L. nelumbifolia.
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Affiliation(s)
- Yasuko Okamoto
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | - Arisa Fukui
- Department of Chemistry, Rikkyo University, Tokyo, Japan
| | - Takuya Hashida
- Department of Chemistry, Rikkyo University, Tokyo, Japan
| | | | - Chiaki Kuroda
- Department of Chemistry, Rikkyo University, Tokyo, Japan
| | - Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Science, China
| | - Ryo Hanai
- Department of Life Science and Research Center of Life Science, Rikkyo University, Tokyo, Japan
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6
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Saito Y, Iga S, Hoshiyama K, Nakashima K, Okamoto Y, Kuroda C, Gong X, Tori M. Eremophilane, bakkane, secoeremophilane, and secobakkane sesquiterpenoids from Ligularia virgaurea collected in China. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.02.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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7
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Heravi MM, Zadsirjan V, Saedi P, Momeni T. Applications of Friedel-Crafts reactions in total synthesis of natural products. RSC Adv 2018; 8:40061-40163. [PMID: 35558228 PMCID: PMC9091380 DOI: 10.1039/c8ra07325b] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 11/03/2018] [Indexed: 12/17/2022] Open
Abstract
Over the years, Friedel-Crafts (FC) reactions have been acknowledged as the most useful and powerful synthetic tools for the construction of a special kind of carbon-carbon bond involving an aromatic moiety. Its stoichiometric and, more recently, its catalytic procedures have extensively been studied. This reaction in recent years has frequently been used as a key step (steps) in the total synthesis of natural products and targeted complex bioactive molecules. In this review, we try to underscore the applications of intermolecular and intramolecular FC reactions in the total syntheses of natural products and complex molecules, exhibiting diverse biological properties.
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Affiliation(s)
- Majid M Heravi
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
| | - Vahideh Zadsirjan
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
| | - Pegah Saedi
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
| | - Tayebeh Momeni
- Department of Chemistry, School of Science, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
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8
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Saito Y, Ichihara M, Takashima Y, Okamoto Y, Gong X, Hanai R, Kuroda C, Tori M. Chemical constituents of hybrids of Ligularia cyathiceps and L. lamarum/L. subspicata collected in China: Structures of subspicatins M, N, O 1, and O 2, and related compounds. PHYTOCHEMISTRY 2017; 140:69-76. [PMID: 28460262 DOI: 10.1016/j.phytochem.2017.04.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 04/13/2017] [Accepted: 04/18/2017] [Indexed: 06/07/2023]
Abstract
Three natural hybrids and an introgressed individual of Ligularia were evaluated based on a combination of morphology, root chemicals, and nucleotide sequences of evolutionally neutral regions to understand the chemical outcomes of hybridization and introgression. Six previously undescribed eremophilane sesquiterpenes were isolated from hybrids between L. cyathiceps and L. lamarum/L. subspicata, and benzofurans were isolated from L. subspicata for the first time. Their structures were elucidated based on spectroscopic analyses. Some compounds produced by hybrids have not been detected in either parental species, indicating that the metabolic profile was altered by hybridization and introgression.
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Affiliation(s)
- Yoshinori Saito
- Graduate School of Biomedical Sciences, Nagasaki University, Bunkyo-machi, Nagasaki 852-8521, Japan; Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514 Japan.
| | - Mayu Ichihara
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514 Japan
| | - Yuriko Takashima
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514 Japan
| | - Yasuko Okamoto
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514 Japan
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, China
| | - Ryo Hanai
- Department of Life Science, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Chiaki Kuroda
- Department of Chemistry, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514 Japan
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9
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Ning H, Yu J, Gong X. Bidirectional natural hybridization between sympatric Ligularia vellerea and L. subspicata. PLANT DIVERSITY 2017; 39:214-220. [PMID: 30159514 PMCID: PMC6112292 DOI: 10.1016/j.pld.2017.07.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 07/05/2017] [Accepted: 07/12/2017] [Indexed: 05/14/2023]
Abstract
Natural hybridization has been regarded as a crucial pathway of speciation and provides the raw materials for the evolution of biodiversity. The interspecific natural hybridization of the genus Ligularia Cass. is universal and has been considered to be an important factor driving the high diversity of Ligularia species in the Hengduan Mountains, China. Although the natural hybridization between L. vellerea and L. subspicata was reported previously, the direction of hybridization was uncertain due to the limitation of sampling. Thus, in this study, we sampled more individuals and increased two fragments of chloroplast DNA on the basis of the previous study to further verify the natural hybridization between L. vellerea and L. subspicata and confirm the direction of hybridization. Based on DNA sequences (atpB-rbcL, trnL-rpl32, trnQ-5'rps16, and nuclear ribosomal internal transcribed spacer region) data, we concluded that putative hybrids were primary products of hybridization between L. vellerea and L. subspicata and the hybridization was bidirectional. Moreover, sympatric L. tongolensis was not apparently involved in the hybridization. Surprisingly, some pure L. subspicata individuals showed the disaccordance between morphology and DNA data, which might indicate that introgression occurs between L. vellerea and L. subspicata.
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Affiliation(s)
- Huai Ning
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiaojun Yu
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Xun Gong
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
- Corresponding author. No. 132, Lanhei Road, Panlong District, Kunming City, Yunnan Province, China. Fax: +86 871 65223625.
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10
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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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11
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Naveen T, Deb A, Maiti D. Copper/P(t
Bu)3
-Mediated Regiospecific Synthesis of Fused Furans and Naphthofurans. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609401] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Togati Naveen
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai 400076 India
| | - Arghya Deb
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai 400076 India
| | - Debabrata Maiti
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai 400076 India
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12
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Naveen T, Deb A, Maiti D. Copper/P(tBu) 3 -Mediated Regiospecific Synthesis of Fused Furans and Naphthofurans. Angew Chem Int Ed Engl 2016; 56:1111-1115. [PMID: 27996192 DOI: 10.1002/anie.201609401] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Indexed: 01/12/2023]
Abstract
A novel [3+2] cycloaddition between a variety of cyclic ketones and diverse olefins or alkynes can be effectively promoted by copper in combination with the tri-tert-butylphosphine [P(tBu)3 ] ligand. This protocol exhibits excellent selectivity and provides an exemplary set of fused heterocycles in good to excellent yields. Present strategy also represents an extremely simple and atom-economic way to construct substituted fused furans and naphthofurans from readily available starting materials under mild reaction conditions. The utility of the method is further demonstrated by the synthesis of chiral furans from (R)-(-)-carvone and (S)-(+)-carvone. A plausible mechanism involving the oxidative radical cyclization has been suggested based on experimental observations.
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Affiliation(s)
- Togati Naveen
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Arghya Deb
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
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13
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Saito Y, Takashima Y, Okamoto Y, Gong X, Hanai R, Kuroda C, Tori M. Three New Eremophilanes from a Ligularia Hybrid Collected in China. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Three new eremophilanes were isolated from a sample of Ligularia collected in Yunnan province of China and their structures were determined. The chemical constituents including eleven eremophilanes (major constituents: 6-acyloxyfuranoeremophilan-10β-ols) were similar to those of a hybrid of L. cyathiceps and L. subspicata, however, the base sequence of the ITS1-5.8S-ITS2 region was typical of L. cyathiceps, indicating backcrossing.
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Affiliation(s)
- Yoshinori Saito
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514 Japan
- Graduate School of Biomedical Sciences, Nagasaki University, Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Yuriko Takashima
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514 Japan
| | - Yasuko Okamoto
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514 Japan
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, China
| | - Ryo Hanai
- Department of Life Science and Research Center for Life Science, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Chiaki Kuroda
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514 Japan
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14
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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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15
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Okamoto Y, Taniguchi M, Terada K, Nakashima K, Gong X, Hanai R, Tori M, Kuroda C. Diversity in Chemical Constituents of Ligularia Longihastata Collected in China. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Root constituents of Ligularia longihastata were examined for the first time. Fourteen eremophilane sesquiterpenes, including two new eremophilanes identified as 3α-isobutyroyloxy-7β H-eremophila-9,11-dien-8-one and 3β-angeloyloxy-1β,10β-epoxyfuranoeremophilan-9-one, and three eudesmanes were isolated. From samples collected in Baiyu County, Sichuan Province, furanoeremophilane derivatives were isolated, while various eremophilan-8-ones were isolated from samples collected in Kangding County, Sichuan. The results suggest chemical diversity in the species.
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Affiliation(s)
- Yasuko Okamoto
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514 Japan
| | - Mizuho Taniguchi
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514 Japan
| | - Kaori Terada
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Katsuyuki Nakashima
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514 Japan
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, China
| | - Ryo Hanai
- Department of Life Science and Research Center for Life Science, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514 Japan
| | - Chiaki Kuroda
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
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Four New Sesquiterpenoids from Ligularia subspicata Collected in China; Isolation of a Bakkane-type Lactone, an Eremophilane-type Lactone, and Two Ortho Esters. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A bakkane type lactone, an eremophilane type lactone, and two ortho esters were isolated from Ligularia subspicata collected in Sichuan Province, China. The ortho ester type compound has been isolated from Ligularia for the first time.
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Yu J, Kuroda C, Gong X. Natural hybridization and introgression between Ligularia cymbulifera and L. tongolensis (Asteraceae, Senecioneae) in four different locations. PLoS One 2014; 9:e115167. [PMID: 25551379 PMCID: PMC4281107 DOI: 10.1371/journal.pone.0115167] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 11/19/2014] [Indexed: 11/18/2022] Open
Abstract
Natural hybridization has been considered to represent an important factor influencing the high diversity of the genus Ligularia Cass. in the Hengduan Mountains, China. Natural hybridization has been confirmed to occur frequently in Ligularia. To date, however, it has been demonstrated only within a single population. In this paper, we present evidence of natural hybridization in Ligularia from four different locations. The internal transcribed spacer (ITS) region of the nuclear ribosomal DNA and three chloroplast intergenic spacers (trnK-rps16, trnL-rpl32 and trnQ-5'rps16) of 149 accessions of putative hybrids and their putative parents (L. cymbulifera and L. tongolensis) were analyzed for evidence of hybridization. The ITS data clearly distinguished two putative parental species and sympatric L. vellerea and supported the hypothesis that those morphological intermediates were products of natural hybridization between L. cymbulifera and L. tongolensis. Moreover, several identified morphological parents were actual introgressed products. Because of hybridization and introgression, chloroplast DNA sequences generated a poorly resolved network. The present results indicate that varying degrees of hybridization and introgression occur differently depending on the habitat context. We conclude that gene flow caused by natural hybridization in Ligularia indeed plays an important role in the species diversity.
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Affiliation(s)
- Jiaojun Yu
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, P. R. China
- University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Chiaki Kuroda
- Department of Chemistry, Rikkyo University, Tokyo, Japan
| | - Xun Gong
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, P. R. China
- * E-mail:
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Saito Y, Kamada A, Okamoto Y, Gong X, Kuroda C, Tori M. Isolation and Structure of Three Bislactones, Eremopetasitenin B4 and Eremofarfugins F and G, from Ligularia przewalskii and Revision of the Structure of an Epoxy-lactone Isolated from Ligularia intermedia. CHEM LETT 2014. [DOI: 10.1246/cl.140745] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yoshinori Saito
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University
| | - Aya Kamada
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University
| | - Yasuko Okamoto
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Sciences
| | | | - Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University
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Shimizu A, Watanabe S, Hanai R, Okamoto Y, Tori M, Gong X, Kuroda C. Chemical and Genetic Studies on Hybrid ofLigularia subspicataandLigularia cyathicepsCollected in Yunnan Province of China. Chem Biodivers 2014; 11:1438-48. [DOI: 10.1002/cbdv.201400133] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Indexed: 11/09/2022]
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Structure and cytotoxic evaluation of five 12-oxygenated eremophilanes from Ligularia lingiana. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Shimizu A, Suzuki Y, Hanai R, Okamoto Y, Tori M, Gong X, Kuroda C. Chemical and genetic similarity and diversity of Ligularia anoleuca and L. fischeri collected in the Hengduan Mountains of China. PHYTOCHEMISTRY 2014; 102:137-144. [PMID: 24725977 DOI: 10.1016/j.phytochem.2014.03.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Revised: 10/21/2013] [Accepted: 03/18/2014] [Indexed: 06/03/2023]
Abstract
The sesquiterpenoid composition in the root and the DNA sequences of evolutionarily neutral regions were studied in Ligularia anoleuca and Ligularia fischeri (Asteraceae) collected in the Sichuan Province of China. LC-MS analysis showed that L. anoleuca populations from different localities had different chemical compositions. However, the isolated compounds were similar to each other, indicating that the differences in chemical composition were not large. The DNA analysis suggested that the two species were indistinguishable. Seventeen furanoeremophilanes and an eremophilane acetal were isolated.
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Affiliation(s)
- Anna Shimizu
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Yurika Suzuki
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Ryo Hanai
- Department of Life Science and Research Center for Life Science, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan.
| | - Yasuko Okamoto
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan.
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Science, Kunming 650204, China.
| | - Chiaki Kuroda
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan.
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Saito Y, Ichihara M, Okamoto Y, Gong X, Kuroda C, Tori M. Twelve new compounds from Ligularia melanothyrsa; isolation of melanothyrsins A–E, normelanothyrsin A, and other eremophilane sesquiterpenoids. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.02.080] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Saito Y, Mukai T, Iwamoto Y, Baba M, Takiguchi K, Okamoto Y, Gong X, Kawahara T, Kuroda C, Tori M. Germacranolides and Their Diversity of Eupatorium heterophyllum Collected in P. R. China. Chem Pharm Bull (Tokyo) 2014; 62:1092-9. [DOI: 10.1248/cpb.c14-00426] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yoshinori Saito
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University
| | - Tomomi Mukai
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University
| | - Yuko Iwamoto
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University
| | - Makiko Baba
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University
| | - Koji Takiguchi
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University
| | - Yasuko Okamoto
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Science
| | | | | | - Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University
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Kuroda C, Hanai R, Tori M, Okamoto Y, Saito Y, Nagano H, Ohsaki A, Hirota H, Kawahara T, Gong X. Diversity in Furanoeremophilane Composition Produced by Ligularia Species (Asteraceae) in the Hengduan Mountains Area of China. J SYN ORG CHEM JPN 2014. [DOI: 10.5059/yukigoseikyokaishi.72.717] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Saito Y, Ichihara M, Takiguchi K, Tanio Y, Okamoto Y, Hanai R, Kuroda C, Kawahara T, Gong X, Tori M. Chemical and genetic diversity of Cremanthodium lineare. PHYTOCHEMISTRY 2013; 96:184-190. [PMID: 24119572 DOI: 10.1016/j.phytochem.2013.08.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 05/28/2013] [Accepted: 08/13/2013] [Indexed: 06/02/2023]
Abstract
Chemical constituents and evolutionally neutral DNA sequences of six samples of Cremanthodium lineare Maxim., collected in the Sichuan Province of China, were studied. Three samples produced furanoeremophilanes and the other three, eremophilan-8-ones. The chemotypes were found to be correlated with DNA sequence types, suggesting that the chemical diversity observed has a genetic origin. Production of furanoeremophilanes by a Cremanthodium species suggests an evolutionary relationship between Cremanthodium and Ligularia species, and possibly to related genera.
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Affiliation(s)
- Yoshinori Saito
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan
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Liu DZ, Liu JK. Peroxy natural products. NATURAL PRODUCTS AND BIOPROSPECTING 2013; 3:161-206. [PMCID: PMC4131620 DOI: 10.1007/s13659-013-0042-7] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Accepted: 08/05/2013] [Indexed: 05/30/2023]
Abstract
This review covers the structures and biological activities of peroxy natural products from a wide variety of terrestrial fungi, higher plants, and marine organisms. Syntheses that confirm or revise structures or stereochemistries have also been included, and 406 references are cited. ![]()
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Affiliation(s)
- Dong-Ze Liu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Science, Tianjin, 300308 China
| | - Ji-Kai Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 China
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Handore KL, Seetharamsingh B, Reddy DS. Ready Access to Functionally Embellished cis-Hydrindanes and cis-Decalins: Protecting Group-Free Total Syntheses of (±)-Nootkatone and (±)-Noreremophilane. J Org Chem 2013; 78:8149-54. [DOI: 10.1021/jo401033j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kishor L. Handore
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008,
India
| | - B. Seetharamsingh
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008,
India
| | - D. Srinivasa Reddy
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008,
India
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Silva AL, Toscano RA, Maldonado LA. An Enantioselective Approach to Furanoeremophilanes: (+)-9-Oxoeuryopsin. J Org Chem 2013; 78:5282-92. [DOI: 10.1021/jo400399q] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ana L. Silva
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito
Exterior, Ciudad Universitaria, Coyoacán, México DF
04510, Mexico
| | - Rubén A. Toscano
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito
Exterior, Ciudad Universitaria, Coyoacán, México DF
04510, Mexico
| | - Luis A. Maldonado
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito
Exterior, Ciudad Universitaria, Coyoacán, México DF
04510, Mexico
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Saito Y. [Chemical and genetic diversity of Ligularia plants collected in the Hengduan Mountains, China]. YAKUGAKU ZASSHI 2012. [PMID: 23208053 DOI: 10.1248/yakushi.12-00207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The Hengduan Mountains area of China is rich in plant resources. The Ligularia species, which belong to Senecioneae and Asteraceae, distributed in this area are highly diversified and contain 6 sections and over 100 species, and are considered to be in on-going evolution and diversification. To understand the inter- and intra-specific diversity of these plants and to elucidate the mechanism of diversification, we analyzed Ligularia plants by chemical, genetic, geographical, ecological, and morphological approaches. We investigated 4 species, and isolated 26 novel compounds. Based on the chemical composition of root extract as well as nucleotide sequence variations in internal transcribed spacers (ITS), we obtained 3 findings. (i) L. virgaurea is classified into two groups, ligularol type and virgaurenone type from the view point of chemical constituents, which are phylogenetically distinguished from each other, (ii) L. subspicata and L. lamarum have an overlapped chemical spectrum, but showed no clear genetic correlation, and (iii) L. cyathiceps showed no significant variations in either chemical constituents or nucleotide sequences.
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Affiliation(s)
- Yoshinori Saito
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, Japan.
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Hanai R, Yamada H, Suzuki Y, Nagano H, Kawahara T, Yu JJ, Gong X, Kuroda C. Chemical Constituents of Ligularia Nelumbifolia and L. Subspicata Hybrid Collected in Shangrila County, Yunnan Province of China. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200701204] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Four Ligularia individuals possessing morphological characters of both L. nelumbifolia and L. subspicata were discovered in Shangrila County, Yunnan Province, China. DNA sequencing showed that the specimens were hybrids of the two species and their maternal parent was L. subspicata. The chemical composition of the root extract was examined for three of them as well as L. nelumbifolia and L. subspicata collected sympatrically. Nelumol was isolated from L. nelumbifolia, and furanoeremophilanes from L. subspicata. While nelumol and furanoeremophilanes were detected in two of the hybrid samples, only furanoeremophilanes were detected in the others.
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Affiliation(s)
- Ryo Hanai
- Department of Life Science and Research Center for Life Science, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Hiroka Yamada
- Department of Chemistry, Ochanomizu University, Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Yurika Suzuki
- Department of Chemistry, and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Hajime Nagano
- Department of Chemistry, Ochanomizu University, Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Takayuki Kawahara
- Shikoku Research Center, Forestry and Forest Products Research Institute, Asakuranishi-machi, Kochi, Kochi 780-8077, Japan
| | - Jiao-Jun Yu
- Kunming Institute of Botany, Chinese Academy of Science, Kunming 650204, China
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Science, Kunming 650204, China
| | - Chiaki Kuroda
- Department of Chemistry, and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
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Chemical and genetic diversity of Ligularia virgaurea collected in northern Sichuan and adjacent areas of China. Isolation of 13 new compounds. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.042] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Nagano H, Hanai R, Yamada H, Matsushima M, Miura Y, Hoya T, Ozawa M, Fujiwara M, Kodama H, Torihata A, Onuki H, Nezu Y, Kawai S, Yamazaki M, Hirota H, Saito Y, Tori M, Ohsaki A, Gong X, Kuroda C. Chemical and genetic study of Ligularia duciformis and related species in Sichuan and Yunnan Provinces of China. Chem Biodivers 2012; 9:789-805. [PMID: 22492496 DOI: 10.1002/cbdv.201100240] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The chemical constituents of the root extracts and the evolutionarily neutral DNA base sequences were studied for 28 samples of Ligularia duciformis, L. kongkalingensis, and L. nelumbifolia collected in Sichuan and Yunnan Provinces of China. The samples could be classified into four chemotypes (1-4). Sesquiterpenoids having eremophilane and oplopane skeletons were isolated from two (Chemotype 1) and three (Chemotype 2) samples, respectively. Two new oplopane derivatives were isolated and their structures were determined. In 18 samples, phenylpropenoids were the major components (Chemotype 3). In five samples, neither phenylpropenoids nor sesquiterpenoids were found (Chemotype 4). Despite this large chemical variety, no correlation was found between the chemotype and the morphological criteria of species identification. The analysis of the evolutionarily neutral DNA regions also indicated that the samples were not separated into distinct clades and that introgression was extensive.
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Affiliation(s)
- Hajime Nagano
- Department of Chemistry, Ochanomizu University, Otsuka, Bunkyo-ku, Tokyo, Japan.
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Phaeophytin analogues from Ligularia knorringiana. Molecules 2012; 17:5219-24. [PMID: 22565475 PMCID: PMC6268028 DOI: 10.3390/molecules17055219] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Revised: 04/25/2012] [Accepted: 04/27/2012] [Indexed: 11/17/2022] Open
Abstract
A new phaeophytin, ligulariaphytin A, together with five known phaeophytins, were isolated from the aerial parts of Ligularia knorringiana. The structure of ligulariaphytin A was elucidated as 131-hydroxy-131,132-peroxyphaeophorbide A ethyl ester (1), and the five known compounds were identified as 132-hydroxyphaeophorbide A ethyl ester (2), 173-ethoxyphaeophorbide A (3), phaeophytin B (4), phaeophytin A (5), and phaeophorbide B ethyl ester (6), respectively, based on spectroscopic analysis and by comparison of their spectral data with those reported previously in the literature. All compounds were evaluated for their in vitro cytotoxic activities against cultured Hela cell, and were found to show only very weak cytotoxicity.
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Hirota H, Horiguchi Y, Kawaii S, Kuroda C, Hanai R, Gong X. Four New Bisabolane-type Sesquiterpenes from Ligularia Lankongensis. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200700408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The chemical constituents of the roots of two Ligularia lankongensis samples collected in Yunnan and Sichuan Provinces, China, were investigated, together with the DNA sequence of the atpB-rbcL and ITS regions. Four new highly oxygenated bisabolane-type sesquiterpenes (1 – 4) were obtained. Intraspecific diversity in the DNA sequence was found to be limited.
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Affiliation(s)
- Hiroshi Hirota
- RIKEN Advanced Science Institute, Hirosawa, Wako 351-0198, Japan
- Cooperative Research and Development Center, Yokohama National University, Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Yurie Horiguchi
- RIKEN Advanced Science Institute, Hirosawa, Wako 351-0198, Japan
- Faculty of Science and Engineering, Tokyo Denki University, Hatoyama, Saitama 350-0394, Japan
| | - Satoru Kawaii
- Faculty of Science and Engineering, Tokyo Denki University, Hatoyama, Saitama 350-0394, Japan
| | - Chiaki Kuroda
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Ryo Hanai
- Department of Life Science and Research Center for Life Science, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Science, Kunming 654202, China
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Shimizu A, Suzuki Y, Torihata A, Hanai R, Saito Y, Tori M, Gong X, Kuroda C. Complex Diversity in Ligularia Kanaitzensis. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200700404] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Two samples of Ligularia kanaitzensis collected in the Shizhongshan Mountain region of Yunnan Province, as well as one sample collected in Sichuan Province, were analyzed with regard to root constituents and neutral DNA sequences. The two Shizhongshan samples were found to be different from each other and from other samples analyzed previously, indicating that the intra-specific diversity in the species was highly complex.
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Affiliation(s)
- Anna Shimizu
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Yurika Suzuki
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Atsushi Torihata
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Ryo Hanai
- Department of Life Science and Research Center for Life Science, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Yoshinori Saito
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514, Japan
| | - Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514, Japan
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Science, Kunming 650204, P. R. China
| | - Chiaki Kuroda
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
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Kuroda C, Hanai R, Nagano H, Tori M, Gong X. Diversity of Furanoeremophilanes in Major Ligularia Species in the Hengduan Mountains. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200700431] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The chemical and genetic diversity of Ligularia species in the Hengduan Mountains area of China is reviewed. A hypothesis that the production of furanoeremophilanes is ecologically advantageous is proposed.
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Affiliation(s)
- Chiaki Kuroda
- Department of Chemistry, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Ryo Hanai
- Department of Life Science, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Hajime Nagano
- Department of Chemistry, Ochanomizu University, Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Science, Kunming 650204, China
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38
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Affiliation(s)
- Braulio M Fraga
- Instituto de Productos Naturales y Agrobiología, CSIC, 38206-La Laguna, Tenerife, Canary Islands, Spain.
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Tori M, Saito Y, Takiguchi K, Gong X, Kuroda C. THREE NEW BISABOLANE-TYPE SESQUITERPENOIDS FROM CREMANTHODIUM rHODOCEPHALUM (ASTERACEAE). HETEROCYCLES 2012. [DOI: 10.3987/com-12-s(n)47] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Saito Y, Ichihara M, Okamoto Y, Gong X, Kuroda C, Tori M. Four eremophil-9-en-8-one derivatives from Cremanthodium stenactinium samples collected in China. Molecules 2011; 16:10645-52. [PMID: 22183888 PMCID: PMC6264706 DOI: 10.3390/molecules161210645] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Revised: 12/09/2011] [Accepted: 12/16/2011] [Indexed: 12/02/2022] Open
Abstract
Two samples of Cremanthodium stenactinium (Asteraceae) were collected in Sichuan Province, China. From the ethyl acetate extracts of the roots, three new eremophilane-type sesquiterpenoids and one new trinoreremophilane compound were isolated, together with other known eremophilanes. Their structures were determined based on the spectroscopic data. This is the first report of isolation of eremophilane-type compounds from the genus Cremanthodium.
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Affiliation(s)
- Yoshinori Saito
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514, Japan; (M.T.)
| | - Mayu Ichihara
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514, Japan; (M.T.)
| | - Yasuko Okamoto
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514, Japan; (M.T.)
| | - Xun Gong
- Kunming Institute of Botany, Chinese Academy of Science, Kunming 650204, China;
| | - Chiaki Kuroda
- Department of Chemistry, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan;
| | - Motoo Tori
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514, Japan; (M.T.)
- Author to whom correspondence should be addressed; ; Tel.: +81-88-602-8462; Fax: +81-88-655-3051
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Saito Y, Ichihara M, Okamoto Y, Gong X, Kuroda C, Tori M. Five new subspicatins and noreremophilane from Parasenecio petasitoides collected in China. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.09.063] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Yang JL, Wang R, Shi YP. Phytochemicals and biological activities of Ligularia species. NATURAL PRODUCTS AND BIOPROSPECTING 2011. [PMCID: PMC4131708 DOI: 10.1007/s13659-011-0003-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Ligularia, an important genus of the Compositae family, has captured the interest of natural product chemists for years. Phytochemical investigations on the title genus have led to isolation of hundreds of secondary metabolites with various skeletons. Herein, we summarized the chemical constituents of this genus and their biological activities over the past few decades.
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Affiliation(s)
- Jun-Li Yang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000 China
| | - Rui Wang
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 China
| | - Yan-Ping Shi
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000 China
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 China
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Liu Y, Jacobs HK, Gopalan AS. A new approach to fused furan ring systems and benzofurans: Intramolecular cyclization reactions of unsaturated acyloxy sulfone derivatives. Tetrahedron Lett 2011; 52:2935-2939. [PMID: 21731117 DOI: 10.1016/j.tetlet.2011.03.120] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Unsaturated acyloxy sulfones 3 undergo intramolecular cyclization upon deprotonation with LHMDS in THF. Dehydration and double bond isomerization of the products upon exposure to acid, gave the fused ring furans, 4, in good yields. This strategy could be readily adapted to 12 from the cyclization reactions of acyloxy sulfones 11 prepared from phenols. Finally, this approach could be successfully modified to access dihydropyrans and benzopyrans.
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Affiliation(s)
- Yuan Liu
- Department of Chemistry and Biochemistry, New Mexico State University Las Cruces, NM 88003-8001
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