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Yao G, Parris MR, Kuo WC, Pörzgen P, Castillo B, Mason ES, Chinchilla A, Huang J, Suzuki S, Ross R, Akana E, Vander Schuit S, Miller SP, Penner R, Sun HS, Feng ZP, Hull KG, Romo D, Fleig A, Horgen FD. Transient Receptor Potential Melastatin 7 (TRPM7) Ion Channel Inhibitors: Preliminary SAR and Conformational Studies of Xenicane Diterpenoids from the Hawaiian Soft Coral Sarcothelia edmondsoni. JOURNAL OF NATURAL PRODUCTS 2024; 87:783-797. [PMID: 38537009 DOI: 10.1021/acs.jnatprod.3c00942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
Waixenicin A, a xenicane diterpene from the octocoral Sarcothelia edmondsoni, is a selective, potent inhibitor of the TRPM7 ion channel. To study the structure-activity relationship (SAR) of waixenicin A, we isolated and assayed related diterpenes from S. edmondsoni. In addition to known waixenicins A (1) and B (2), we purified six xenicane diterpenes, 7S,8S-epoxywaixenicins A (3) and B (4), 12-deacetylwaixenicin A (5), waixenicin E (6), waixenicin F (7), and 20-acetoxyxeniafaraunol B (8). We elucidated the structures of 3-8 by NMR and MS analyses. Compounds 1, 2, 3, 4, and 6 inhibited TRPM7 activity in a cell-based assay, while 5, 7, and 8 were inactive. A preliminary SAR emerged showing that alterations to the nine-membered ring of 1 did not reduce activity, while the 12-acetoxy group, in combination with the dihydropyran, appears to be necessary for TRPM7 inhibition. The bioactive compounds are proposed to be latent electrophiles by formation of a conjugated oxocarbenium ion intermediate. Whole-cell patch-clamp experiments demonstrated that waixenicin A inhibition is irreversible, consistent with a covalent inhibitor, and showed nanomolar potency for waixenicin B (2). Conformational analysis (DFT) of 1, 3, 7, and 8 revealed insights into the conformation of waixenicin A and congeners and provided information regarding the stabilization of the proposed pharmacophore.
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Affiliation(s)
- Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Matthew R Parris
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348, United States
| | - W Cedric Kuo
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Peter Pörzgen
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Brandi Castillo
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Evan S Mason
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348, United States
| | - Andres Chinchilla
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348, United States
| | - Junhao Huang
- Laboratory of Cell and Molecular Signaling, Center for Biomedical Research at The Queen's Medical Center, Honolulu, Hawaii 96813, United States
| | - Sayuri Suzuki
- Laboratory of Cell and Molecular Signaling, Center for Biomedical Research at The Queen's Medical Center, Honolulu, Hawaii 96813, United States
| | - Rylee Ross
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Ellis Akana
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Savana Vander Schuit
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
| | - Steven P Miller
- Department of Pediatrics, University of British Columbia and BC Children's Hospital, Vancouver, British Columbia V6H 3N1, Canada
| | - Reinhold Penner
- Laboratory of Cell and Molecular Signaling, Center for Biomedical Research at The Queen's Medical Center, Honolulu, Hawaii 96813, United States
| | | | | | - Kenneth G Hull
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348, United States
- The Baylor Synthesis and Drug-Lead Discovery Laboratory, Baylor University, Waco, Texas 76798, United States
| | - Daniel Romo
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348, United States
| | - Andrea Fleig
- Laboratory of Cell and Molecular Signaling, Center for Biomedical Research at The Queen's Medical Center, Honolulu, Hawaii 96813, United States
| | - F David Horgen
- Chemistry and Biochemistry, Hawaii Pacific University, Kaneohe, Hawaii 96744, United States
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2
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13-Epi-9-Deacetylxenicin Derivatives from a Taiwanese Soft Coral Asterospicularia laurae and Treir Cytotoxic Activity. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03765-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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3
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Ng SY, Phan CS, Ishii T, Kamada T, Hamada T, Vairappan CS. Terpenoids from Marine Soft Coral of the Genus Xenia in 1977 to 2019. Molecules 2020; 25:molecules25225386. [PMID: 33217924 PMCID: PMC7698640 DOI: 10.3390/molecules25225386] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 01/02/2023] Open
Abstract
Members of the marine soft coral genus Xenia are rich in a diversity of diterpenes. A total of 199 terpenes consisting of 14 sesquiterpenes, 180 diterpenes, and 5 steroids have been reported to date. Xenicane diterpenes were reported to be the most common chemical skeleton biosynthesized by members of this genus. Most of the literature reported the chemical diversity of Xenia collected from the coral reefs in the South China Sea and the coastal waters of Taiwan. Although there was a brief review on the terpenoids of Xenia in 2015, the present review is a comprehensive overview of the structural diversity of secondary metabolites isolated from soft coral genus Xenia and their potent biological activity as reported between 1977 to 2019.
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Affiliation(s)
- Shean-Yeaw Ng
- Laboratory of Natural Products Chemistry, Institute for Tropical Biology and Conservation, Universiti Malaysia Sabah, Kota Kinabalu 88400, SBH, Malaysia; (S.-Y.N.); (C.-S.P.)
| | - Chin-Soon Phan
- Laboratory of Natural Products Chemistry, Institute for Tropical Biology and Conservation, Universiti Malaysia Sabah, Kota Kinabalu 88400, SBH, Malaysia; (S.-Y.N.); (C.-S.P.)
| | - Takahiro Ishii
- Department of Bioscience and Biotechnology, Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903-0213, Japan;
| | - Takashi Kamada
- Department of Materials and Life Science, Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan;
| | - Toshiyuki Hamada
- Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan;
| | - Charles Santhanaraju Vairappan
- Laboratory of Natural Products Chemistry, Institute for Tropical Biology and Conservation, Universiti Malaysia Sabah, Kota Kinabalu 88400, SBH, Malaysia; (S.-Y.N.); (C.-S.P.)
- Correspondence: ; Tel.: +60-88-320-000 (ext. 2353); Fax: +60-88-320-291
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4
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Su JH, Liu CI, Lu MC, Chang CI, Hsieh MY, Lin YC, Dai CF, Zhang YH, Lin ZY, Lin YS. New secondary metabolite with cytotoxicity from spawning soft coral Asterospicularia laurae in Taiwan. Nat Prod Res 2019; 35:967-975. [PMID: 31364881 DOI: 10.1080/14786419.2019.1614579] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We have conducted a long-term research on the Taiwanese soft coral Asterospicularia laurae, which resulted in many xenicane-type diterpenoids such as asterolaurins A-M from A. laurae coral tissues during the non-spawning period were isolated. Here, we report a new xenicane diterpenoid, asterolaurin N (1), along with three known xenicane-type monocarbocyclic diterpenes [13-epi-9-desacetylxenicin (2), xeniolide-B 9-acetate (3) and asterolaurin I (4)] from A. laurae during the spawning period. The structures of the new secondary metabolite were established with an extensive spectroscopic analysis. The 1D and 2D nuclear magnetic resonance (NMR) data of the compounds were discussed. We discovered that the C-15 of 1 contains two methyl groups on a carbon bearing an acetyl group, which has not been reported previously. In addition, Compounds 1, 3, and 4 showed selective cytotoxic activity against Molt 4, while 2 exhibited significant cytotoxicity against Molt 4, K562, Sup-T1 and U937 cell lines.
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Affiliation(s)
- Jui-Hsin Su
- National Museum of Marine Biology & Aquarium, Pingtung, Taiwan
| | - Chih-I Liu
- Department of Nursing, Meiho University, Pingtung, Taiwan
| | - Mei-Chin Lu
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan
| | - Chi-I Chang
- Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Min-Ying Hsieh
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan
| | - Yu-Chi Lin
- National Research Institute of Chinese Medicine, Taipei, Taiwan
| | - Chang-Feng Dai
- Institute of Oceanography, National Taiwan University, Taipei, Taiwan
| | - Ya-Han Zhang
- Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Zheng-Yu Lin
- Department of Biological Science and Technology, Meiho University, Pingtung, Taiwan
| | - Yun-Sheng Lin
- Department of Biological Science and Technology, Meiho University, Pingtung, Taiwan
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Huber T, Weisheit L, Magauer T. Synthesis of Xenia diterpenoids and related metabolites isolated from marine organisms. Beilstein J Org Chem 2015; 11:2521-2539. [PMID: 26734099 PMCID: PMC4685919 DOI: 10.3762/bjoc.11.273] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 11/27/2015] [Indexed: 11/29/2022] Open
Abstract
This review describes strategies for the chemical synthesis of xenicane diterpenoids and structurally related metabolites. Selected members from the four different subclasses of the Xenia diterpenoid family, the xenicins, xeniolides, xeniaphyllanes and xeniaethers, are presented. The synthetic strategies are discussed with an emphasis on the individual key reactions for the construction of the uncommon nine-membered carbocycle which is the characteristic structural feature of these natural products. Additionally, the putative biosynthetic pathway of xenicanes is illustrated.
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Affiliation(s)
- Tatjana Huber
- Department of Chemistry and Pharmacy, Ludwig-Maximilians-University Munich, Butenandtstraße 5-13, 81377 Munich, Germany
| | - Lara Weisheit
- Department of Chemistry and Pharmacy, Ludwig-Maximilians-University Munich, Butenandtstraße 5-13, 81377 Munich, Germany
| | - Thomas Magauer
- Department of Chemistry and Pharmacy, Ludwig-Maximilians-University Munich, Butenandtstraße 5-13, 81377 Munich, Germany
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Mukai C, Ueda M, Takahashi Y, Inagaki F. Concise Construction of Bicyclo[6.4.0] and -[7.4.0] Frameworks by [4+2] Cycloaddition of 3,4-Dimethylene-2,5-bis(phenylsulfonyl)cycloalk-1-enes. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500598] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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8
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Shen YC, Tzeng GL, Chen MH, Khalil AT. Three New Cadinene Derivatives fromXenia Puerto-Galerae. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200700191] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Lin YS, Fazary AE, Chen CH, Kuo YH, Shen YC. Asterolaurins G - J, New Xenicane Diterpenoids from the Taiwanese Soft Coral Asterospicularia laurae. Helv Chim Acta 2011. [DOI: 10.1002/hlca.201000192] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Drahl MA, Akhmedov NG, Williams LJ. Selective conversion of an enantioenriched cyclononadienone to the xeniolide, xenibellol, and florlide cores: an integrated routing strategy. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.11.050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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11
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Lin YC, Abd El-Razek MH, Hwang TL, Chiang MY, Kuo YH, Dai CF, Shen YC. Asterolaurins A-F, xenicane diterpenoids from the Taiwanese soft coral Asterospicularia laurae. JOURNAL OF NATURAL PRODUCTS 2009; 72:1911-1916. [PMID: 19863101 DOI: 10.1021/np900231e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Six new xenicane-type diterpenoids, designated as asterolaurins A-F (1-6), have been isolated from the organic extract of the soft coral Asterospicularia laurae, collected in southern Taiwan. Compounds 1-4 possess a xenicin skeleton with a 2-oxabicyclo[7.4.0]tridecane ring system, while 5 and 6 are xeniolide A-type compounds. The structures of the new secondary metabolites, including their configurations, were established on the basis of an extensive spectroscopic analysis, including 1D and 2D NMR (1H-1H COSY, HMQC, HMBC, and NOESY), and by comparison of their NMR data with those of the related compounds. The structure of asterolaurin A (1) was confirmed by X-ray diffraction analysis, and its absolute configuration was determined using the modified Mosher's method. Asterolaurin A (1) exhibited moderate cytotoxicity against HepG2 cells with an IC50 of 8.9 microM, while asterolaurin D (4) showed potent inhibition of elastase release and superoxide anion generation in vitro.
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Affiliation(s)
- Yu-Chi Lin
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei 100, Taiwan, Republic of China
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12
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Andrianasolo EH, Haramaty L, Degenhardt K, Mathew R, White E, Lutz R, Falkowski P. Induction of apoptosis by diterpenes from the soft coral Xenia elongata. JOURNAL OF NATURAL PRODUCTS 2007; 70:1551-7. [PMID: 17900165 PMCID: PMC2866001 DOI: 10.1021/np070088v] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Four new diterpenes ( 1- 4) were isolated from the soft coral Xenia elongata using a novel cell-based screen for apoptosis-inducing, potential anticancer compounds. The molecular structures of the diterpenes were determined using a combination of NMR and mass spectrometry. The bioactivities were confirmed using a specific apoptosis induction assay based on genetically engineered mammalian lines with differential, defined capacities for apoptosis. The diterpenes induce apoptosis in micromolar concentrations. This is the first report of apoptosis induction by marine diterpenes in xenicane skeletons.
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Affiliation(s)
- Eric H. Andrianasolo
- Center for Marine Biotechnology, Institute of Marine and Coastal Sciences, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08901-8521
| | - Liti Haramaty
- Center for Marine Biotechnology, Institute of Marine and Coastal Sciences, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08901-8521
| | - Kurt Degenhardt
- Center for Advanced Biotechnology and Medicine, Department of Molecular Biology and Biochemistry, Rutgers, The State University of New Jersey, 679, Hoes Lane, Piscataway, New Jersey 08854
| | - Robin Mathew
- University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, 675 Hoes Lane, Piscataway, New Jersey 08854
- The Cancer Institute of New Jersey, 195 Little Albany Street, New Brunswick, New Jersey 08903
| | - Eileen White
- Center for Advanced Biotechnology and Medicine, Department of Molecular Biology and Biochemistry, Rutgers, The State University of New Jersey, 679, Hoes Lane, Piscataway, New Jersey 08854
- University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, 675 Hoes Lane, Piscataway, New Jersey 08854
- The Cancer Institute of New Jersey, 195 Little Albany Street, New Brunswick, New Jersey 08903
| | - Richard Lutz
- Center for Marine Biotechnology, Institute of Marine and Coastal Sciences, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08901-8521
| | - Paul Falkowski
- Center for Marine Biotechnology, Institute of Marine and Coastal Sciences, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08901-8521
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13
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Cao S, Foster C, Lazo JS, Kingston DGI. Four diterpenoid inhibitors of Cdc25B phosphatase from a marine anemone. Bioorg Med Chem 2005; 13:5830-4. [PMID: 15993607 DOI: 10.1016/j.bmc.2005.05.057] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2005] [Revised: 05/24/2005] [Accepted: 05/24/2005] [Indexed: 11/22/2022]
Abstract
Three new diterpenoids and one known diterpenoid have been isolated from a sea anemone of the order Actiniara, and the structures of the new compounds, actiniarins A-C (1-3) were established on the basis of extensive 1D and 2D NMR spectroscopic data interpretation. Compound 1 has a six-membered ring hemiacetal ring, and the equilibrium of this ring is discussed. All the isolates were evaluated for their inhibition of Cdc25B and for cytotoxicity against the A2780 ovarian cancer cell line.
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Affiliation(s)
- Shugeng Cao
- Department of Chemistry, M/C 0212, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
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15
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El-Gamal AAH, Wang SK, Duh CY. Xenibellols A and B, New Diterpenoids from the Formosan Soft CoralXeniaumbellata. Org Lett 2005; 7:2023-5. [PMID: 15876045 DOI: 10.1021/ol0505205] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Xenibellols A (1) and B (2), possessing an unprecedented diterpenoid skeleton, were isolated from the soft coral Xenia umbellata. The structures of xenibellols A and B were established by extensive analysis of spectroscopic data.
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Affiliation(s)
- Ali A H El-Gamal
- Department of Marine Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
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16
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Miyaoka H, Mitome H, Nakano M, Yamada Y. Xeniaoxolane: A New Xenicane-type Diterpenoid from the Okinawan Soft Coral, Xenia sp.; Absolute Configurations of Xeniaoxolane, Xeniolide-A and Xenialactol. Tetrahedron 2000. [DOI: 10.1016/s0040-4020(00)00689-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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