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Xue Y, Savchenko AI, Agnew-Francis KA, Miles JA, Holt T, Lu H, Chow S, Forster PI, Boyle GM, Ross BP, Fischer K, Kutateladze AG, Williams CM. seco-Pregnane Glycosides from Australian Caustic Vine ( Cynanchum viminale subsp. australe). JOURNAL OF NATURAL PRODUCTS 2023; 86:490-497. [PMID: 36795946 DOI: 10.1021/acs.jnatprod.2c01037] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Cynanchum viminale subsp. australe, more commonly known as caustic vine, is a leafless succulent that grows in the northern arid zone of Australia. Toxicity toward livestock has been reported for this species, along with use in traditional medicine and its potential anticancer activity. Disclosed herein are novel seco-pregnane aglycones cynavimigenin A (5) and cynaviminoside A (6), together with new pregnane glycosides cynaviminoside B (7) and cynavimigenin B (8). Cynavimigenin B (8) contains an unprecedented 7-oxobicyclo[2.2.1]heptane moiety in the seco-pregnane series, likely arising from a pinacol-type rearrangement. Interestingly, these isolates displayed only limited cytotoxicity in cancer and normal human cell lines, in addition to low activity against acetylcholinesterase and Sarcoptes scabiei bioassays, suggesting that 5-8 are not associated with the reported toxicity of this plant species.
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Affiliation(s)
- Yongbo Xue
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072 Queensland, Australia
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-Sen University, Shenzhen, 518107, People's Republic of China
| | - Andrei I Savchenko
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072 Queensland, Australia
| | - Kylie A Agnew-Francis
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072 Queensland, Australia
| | - Jared A Miles
- School of Pharmacy, University of Queensland, Brisbane, 4072 Queensland, Australia
| | - Tina Holt
- Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80208, United States
| | - Hieng Lu
- QIMR Berghofer Medical Research Institute, PO Royal Brisbane Hospital, Brisbane, 4029 Queensland, Australia
| | - Sharon Chow
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072 Queensland, Australia
| | - Paul I Forster
- Department of Environment and Science, Brisbane Botanic Gardens, Mt Coot-tha, Queensland Herbarium, Brisbane, 4066 Queensland, Australia
| | - Glen M Boyle
- QIMR Berghofer Medical Research Institute, PO Royal Brisbane Hospital, Brisbane, 4029 Queensland, Australia
| | - Benjamin P Ross
- School of Pharmacy, University of Queensland, Brisbane, 4072 Queensland, Australia
| | - Katja Fischer
- QIMR Berghofer Medical Research Institute, PO Royal Brisbane Hospital, Brisbane, 4029 Queensland, Australia
| | - Andrei G Kutateladze
- Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80208, United States
| | - Craig M Williams
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072 Queensland, Australia
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Gyrdymova YV, Rumyantcev RV, Esaulkova YL, Belyaevskaya SV, Zarubaev VV, Kayumov AR, Rubtsova SA. New trifluoromethylated sesquiterpenoids: synthesis, rearrangement, and biological activity. NEW J CHEM 2022. [DOI: 10.1039/d2nj04611c] [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]
Abstract
The tandem isomerization and trifluoromethylation reactions are a simple, convenient, and atom-economical strategy for the synthesis of various products in high yields from simple substrates.
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Affiliation(s)
- Yulia V. Gyrdymova
- Laboratory of Medicinal Chemistry, Institute of Chemistry, Ural Branch of the Russian Academy of Sciences, Syktyvkar, 167000, Russia
| | - Roman V. Rumyantcev
- G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences, Nizhny Novgorod, 603950, Russia
| | - Yana L. Esaulkova
- Pasteur Institute of Epidemiology and Microbiology, St. Petersburg, 197101, Russia
| | | | - Vladimir V. Zarubaev
- Pasteur Institute of Epidemiology and Microbiology, St. Petersburg, 197101, Russia
| | - Airat R. Kayumov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia
| | - Svetlana A. Rubtsova
- Laboratory of Medicinal Chemistry, Institute of Chemistry, Ural Branch of the Russian Academy of Sciences, Syktyvkar, 167000, Russia
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Tan YP, Savchenko AI, Agnew-Francis KA, Boyle GM, Bernhardt PV, Fraser JA, Williams CM. Kalparinol, a Salvialane (Isodaucane) Sesquiterpenoid Derived from Native Australian Dysphania Species That Suggests a Putative Biogenetic Link to Zerumbone. JOURNAL OF NATURAL PRODUCTS 2020; 83:1473-1479. [PMID: 32302147 DOI: 10.1021/acs.jnatprod.9b01039] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Dysphania is a genus of plants endemic to the Australian continent, occurring primarily in arid and temperate zones. Despite their prevalence, very little in the way of phytochemical and/or bioactivity investigation of native Dysphania has been performed. Herein reported is the isolation and elucidation of (6E,9E)-zerumbone epoxide and a hitherto unreported isomer, (6Z,9E)-zerumbone epoxide, from D. kalpari. In addition, a novel isodaucane sesquiterepene, kalparinol, was isolated from both D. kalpari and D. rhadinostachya. The coisolation of the humulene and isodaucane skeletons, combined with the lack of any cadalane systems, could suggest an alternate novel biogenetic pathway originating from zerumbone, which is unlike any other proposals for the isodaucene system.
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Affiliation(s)
- Yuen Ping Tan
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072 Queensland, Australia
| | - Andrei I Savchenko
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072 Queensland, Australia
| | - Kylie A Agnew-Francis
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072 Queensland, Australia
| | - Glen M Boyle
- QIMR Berghofer Medical Research Institute, PO Royal Brisbane Hospital, Brisbane, 4029 Queensland, Australia
| | - Paul V Bernhardt
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072 Queensland, Australia
| | - James A Fraser
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072 Queensland, Australia
| | - Craig M Williams
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072 Queensland, Australia
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