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Sadgrove NJ, Padilla-González GF, Green A, Langat MK, Mas-Claret E, Lyddiard D, Klepp J, Legendre SVAM, Greatrex BW, Jones GL, Ramli IM, Leuner O, Fernandez-Cusimamani E. The Diversity of Volatile Compounds in Australia's Semi-Desert Genus Eremophila (Scrophulariaceae). PLANTS 2021; 10:plants10040785. [PMID: 33923613 PMCID: PMC8073941 DOI: 10.3390/plants10040785] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/09/2021] [Accepted: 04/13/2021] [Indexed: 12/20/2022]
Abstract
Australia’s endemic desert shrubs are commonly aromatic, with chemically diverse terpenes and phenylpropanoids in their headspace profiles. Species from the genus Eremophila (Scrophulariaceae ex. Myoporaceae) are the most common, with 215 recognised taxa and many more that have not yet been described, widely spread across the arid parts of the Australian continent. Over the years, our research team has collected multiple specimens as part of a survey to investigate the chemical diversity of the genus and create leads for further scientific enquiry. In the current study, the diversity of volatile compounds is studied using hydrodistilled essential oils and leaf solvent extracts from 30 taxa. Several rare terpenes and iridoids were detected in chemical profiles widely across the genus, and three previously undescribed sesquiterpenes were isolated and are assigned by 2D NMR—E-11(12)-dehydroisodendrolasin, Z-11-hydroxyisodendrolasin and 10-hydroxydihydro-α-humulene acetate. Multiple sampling from Eremophila longifolia, Eremophila arbuscular, Eremophila latrobei, Eremophila deserti, Eremophila sturtii, Eremophila oppositifolia and Eremophila alternifolia coneys that species in Eremophila are highly chemovariable. However, taxa are generally grouped according to the expression of (1) furanosesquiterpenes, (2) iridoids or oxides, (3) mixtures of 1 and 2, (4) phenylpropanoids, (5) non-furanoid terpenes, (6) mixtures of 4 and 5, and less commonly (7) mixtures of 1 and 5. Furthermore, GC–MS analysis of solvent-extracted leaves taken from cultivated specimens conveys that many heavier ‘volatiles’ with lower vapour pressure are not detected in hydrodistilled essential oils and have therefore been neglected in past chemical studies. Hence, our data reiterate that chemical studies of the genus Eremophila will continue to describe new metabolites and that taxon determination has limited predictive value for the chemical composition.
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Affiliation(s)
- Nicholas J. Sadgrove
- Jodrell Science Laboratory, Royal Botanic Gardens Kew, Richmond TW9 3DS, UK; (G.F.P.-G.); (A.G.); (M.K.L.); (E.M.-C.)
- Correspondence: (N.J.S.); (E.F.-C.); Tel.: +44-785-756-9823 (N.J.S.); +420-224-382-183 (E.F.-C.)
| | - Guillermo F. Padilla-González
- Jodrell Science Laboratory, Royal Botanic Gardens Kew, Richmond TW9 3DS, UK; (G.F.P.-G.); (A.G.); (M.K.L.); (E.M.-C.)
| | - Alison Green
- Jodrell Science Laboratory, Royal Botanic Gardens Kew, Richmond TW9 3DS, UK; (G.F.P.-G.); (A.G.); (M.K.L.); (E.M.-C.)
| | - Moses K. Langat
- Jodrell Science Laboratory, Royal Botanic Gardens Kew, Richmond TW9 3DS, UK; (G.F.P.-G.); (A.G.); (M.K.L.); (E.M.-C.)
| | - Eduard Mas-Claret
- Jodrell Science Laboratory, Royal Botanic Gardens Kew, Richmond TW9 3DS, UK; (G.F.P.-G.); (A.G.); (M.K.L.); (E.M.-C.)
| | - Dane Lyddiard
- School of Science and Technology and School of Rural Medicine, University of New England, Armidale, NSW 2351, Australia; (D.L.); (J.K.); (S.V.A.-M.L.); (B.W.G.); (G.L.J.); (I.M.R.)
| | - Julian Klepp
- School of Science and Technology and School of Rural Medicine, University of New England, Armidale, NSW 2351, Australia; (D.L.); (J.K.); (S.V.A.-M.L.); (B.W.G.); (G.L.J.); (I.M.R.)
| | - Sarah V. A.-M. Legendre
- School of Science and Technology and School of Rural Medicine, University of New England, Armidale, NSW 2351, Australia; (D.L.); (J.K.); (S.V.A.-M.L.); (B.W.G.); (G.L.J.); (I.M.R.)
| | - Ben W. Greatrex
- School of Science and Technology and School of Rural Medicine, University of New England, Armidale, NSW 2351, Australia; (D.L.); (J.K.); (S.V.A.-M.L.); (B.W.G.); (G.L.J.); (I.M.R.)
| | - Graham L. Jones
- School of Science and Technology and School of Rural Medicine, University of New England, Armidale, NSW 2351, Australia; (D.L.); (J.K.); (S.V.A.-M.L.); (B.W.G.); (G.L.J.); (I.M.R.)
| | - Iskandar M. Ramli
- School of Science and Technology and School of Rural Medicine, University of New England, Armidale, NSW 2351, Australia; (D.L.); (J.K.); (S.V.A.-M.L.); (B.W.G.); (G.L.J.); (I.M.R.)
| | - Olga Leuner
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 129, 16500 Prague, Czech Republic;
| | - Eloy Fernandez-Cusimamani
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 129, 16500 Prague, Czech Republic;
- Correspondence: (N.J.S.); (E.F.-C.); Tel.: +44-785-756-9823 (N.J.S.); +420-224-382-183 (E.F.-C.)
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Bhat BA, Rashid S, Mehta G. Progress in the Total Synthesis of Natural Products Embodying Diverse Furofuranone Motifs: A New Millennium Update. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000401] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Bilal A. Bhat
- CSIR-Medicinal Chemistry Division Indian Institute of Integrative Medicine Sanat Nagar Srinagar 190005 India
- Academy of Scientific and Innovative Research CSIR-Indian Institute of Integrative Medicine Canal Road Jammu 180001 India
| | - Showkat Rashid
- CSIR-Medicinal Chemistry Division Indian Institute of Integrative Medicine Sanat Nagar Srinagar 190005 India
- Academy of Scientific and Innovative Research CSIR-Indian Institute of Integrative Medicine Canal Road Jammu 180001 India
- School of Chemistry, University of Hyderabad Hyderabad 500046 India
| | - Goverdhan Mehta
- School of Chemistry, University of Hyderabad Hyderabad 500046 India
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Muhit MA, Umehara K, Noguchi H. Five furofuranone lignan glucosides from Terminalia citrina inhibit in vitro E2-enhanced breast cancer cell proliferation. Fitoterapia 2016; 113:74-9. [PMID: 27425446 DOI: 10.1016/j.fitote.2016.07.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 07/02/2016] [Accepted: 07/13/2016] [Indexed: 10/21/2022]
Abstract
Five new polyalkoxylated furofuranone lignan glucosides, terminalosides L-P (1-5), were isolated from EtOAc extracts of the leaves of Terminalia citrina, a Bangladeshi medicinal plant. The structures of the isolates were deduced primarily by NMR spectroscopy, and four of the isolates were found to contain rare tetraoxygenated aryl groups in their structures. The absolute configurations and conformations of the furofuranone ring were confirmed by ECD spectroscopy. All of the isolates were evaluated for their estrogenic and/or antiestrogenic properties using two estrogen responsive breast cancer cell lines, T47D and MCF-7. At a concentration of 10nM, terminaloside L (1) suppressed E2-enhanced T47D cell proliferation by 90%, while terminaloside M (2) showed 90% antiestrogenic activity against MCF-7 cells. Compared to 2, the antiestrogenic activity of terminaloside O (4) and P (5) was weak, possibly due to the different attachment positions of the sugar moiety that they share in common. This is the first report of furofuranone lignans from any Terminalia species, and also of their antiestrogenic activity.
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Affiliation(s)
- Md Abdul Muhit
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan; Department of Clinical Pharmacy and Pharmacology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Kaoru Umehara
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan.
| | - Hiroshi Noguchi
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan
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Kawabe Y, Ishikawa R, Akao Y, Yoshida A, Inai M, Asakawa T, Hamashima Y, Kan T. Stereocontrolled Total Synthesis of Hedyotol A. Org Lett 2014; 16:1976-9. [DOI: 10.1021/ol500524y] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yusuke Kawabe
- School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Ryo Ishikawa
- School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yusuke Akao
- School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Atsushi Yoshida
- School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Makoto Inai
- School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Tomohiro Asakawa
- School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yoshitaka Hamashima
- School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Toshiyuki Kan
- School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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Edlin CD, Faulkner J, Helliwell M, Knight CK, Parker J, Quayle P, Raftery J. Atom transfer radical cyclization reactions (ATRC): synthetic applications. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.01.038] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Malarz J, Stojakowska A, Szneler E, Kisiel W. Furofuran lignans from a callus culture of Cichorium intybus. PLANT CELL REPORTS 2005; 24:246-9. [PMID: 15809887 DOI: 10.1007/s00299-005-0953-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2005] [Revised: 02/28/2005] [Accepted: 03/02/2005] [Indexed: 05/24/2023]
Abstract
Three new and one known furofuran lignans--syringaresinol derivatives--along with the known phenylpropanoids cichoriin and syringin were isolated from a callus tissue of Cichorium intybus. The compounds were characterised by spectral methods. This is the first report on the presence of furofuran lignans in Cichorium species.
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Affiliation(s)
- J Malarz
- Department of Phytochemistry, Institute of Pharmacology, Polish Academy of Sciences, Smetna 12, 31-343 Krakow, Poland.
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