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Jiang HL, Zhang YY, Mao HY, Zhang Y, Cao YX, Yu HY, Dong XY, Tao L, Yang CS. Strophiofimbrins A and B: Two Rearranged Norditerpenoids with Novel Tricyclic Carbon Skeletons from Strophioblachia fimbricalyx. J Org Chem 2023; 88:5936-5943. [PMID: 37043752 DOI: 10.1021/acs.joc.3c00301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Two rearranged norditerpenoids with novel tricyclic carbon skeletons, strophiofimbrin A (1) and strophiofimbrin B (2), were isolated from Strophioblachia fimbricalyx. Their structures were established by 1D/2D NMR spectroscopy, HRESIMS, quantum chemistry calculations, and X-ray diffraction analyses. 1 and 2 represented the first examples of diterpenoids with unprecedented 5/6/7-fused ring systems. In the proposed biosynthetic pathway, they were suspected to derive from cleistanthane norditerpenoids via ring opening, expansion, cyclization, and rearrangement based on the existence of phenanthrenone and cleistanthane diterpenoids from Strophioblachia and Trigonostemon, two closely related genera of the Euphorbiaceae family. Furthermore, compounds 1 and 2 exhibited significant proliferation inhibition and obvious neuroprotective effects.
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Affiliation(s)
- Hou-Li Jiang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, Jiangsu 225009, China
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, Jiangsu 225009, China
- The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou, Jiangsu 225009, China
| | - Yan-Yan Zhang
- Testing Center, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Hao-Yu Mao
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Yue Zhang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Yin-Xue Cao
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Hong-Yan Yu
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Xiao-Yun Dong
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, Jiangsu 225009, China
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Li Tao
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, Jiangsu 225009, China
- The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou, Jiangsu 225009, China
| | - Chang-Shui Yang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, Jiangsu 225009, China
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, Jiangsu 225009, China
- The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou, Jiangsu 225009, China
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2
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Li WF, Liang ZM, Zhao CL, Tsang NY, Li JX, Liu YH, He K, Pan LT, Rong L, Zou J, Zhang HJ. 3,4- Seco-Isopimarane Diterpenes from the Twigs and Leaves of Isodon Flavidus. Molecules 2022; 27:molecules27103098. [PMID: 35630575 PMCID: PMC9143206 DOI: 10.3390/molecules27103098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/20/2022] [Accepted: 05/09/2022] [Indexed: 11/16/2022] Open
Abstract
Three isopimarane diterpenes [fladins B (1), C (2), and D (3)] were isolated from the twigs and leaves of Chinese folk medicine, Isodon flavidus. The chemical structures were determined by the analysis of the comprehensive spectroscopic data, and the absolute configuration was confirmed by X-ray crystallographic analysis. The structures of 1–3 were formed from isopimaranes through the rearrangement of ring A by the bond break at C-3 and C-4 to form a new δ-lactone ring system between C-3 and C-9. This structure type represents the first discovery of a natural isopimarane diterpene with an unusual lactone moiety at C-9 and C-10. In the crystal of 1, molecules are linked to each other by intermolecular O-H···O bonds, forming chains along the b axis. Compounds 1–3 were evaluated for their bioactivities against different diseases. None of these compounds displayed cytotoxic activities against HCT116 and A549 cancer cell lines, antifungal activities against Trichophyton rubrum and T. mentagrophytes, or antiviral activities against HIV entry at 20 µg/mL (62.9–66.7) µM. Compounds 1 and 3 did not show antiviral activities against Ebola entry at 20 µg/mL either; only 2 was found to show an 81% inhibitory effect against Ebola entry activity at 20 µg/mL (66.7 µM). The bioactivity evidence suggested that this type of compound could be a valuable antiviral lead for further structure modification to improve the antiviral potential.
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Affiliation(s)
- Wan-Fei Li
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Dongqing South Road, Guiyang 550025, China; (W.-F.L.); (C.-L.Z.); (J.-X.L.); (Y.-H.L.); (K.H.); (L.-T.P.)
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; (Z.-M.L.); (N.Y.T.)
| | - Zheng-Ming Liang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; (Z.-M.L.); (N.Y.T.)
| | - Chen-Liang Zhao
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Dongqing South Road, Guiyang 550025, China; (W.-F.L.); (C.-L.Z.); (J.-X.L.); (Y.-H.L.); (K.H.); (L.-T.P.)
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; (Z.-M.L.); (N.Y.T.)
| | - Nga Yi Tsang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; (Z.-M.L.); (N.Y.T.)
| | - Ji-Xin Li
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Dongqing South Road, Guiyang 550025, China; (W.-F.L.); (C.-L.Z.); (J.-X.L.); (Y.-H.L.); (K.H.); (L.-T.P.)
| | - Ya-Hua Liu
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Dongqing South Road, Guiyang 550025, China; (W.-F.L.); (C.-L.Z.); (J.-X.L.); (Y.-H.L.); (K.H.); (L.-T.P.)
| | - Kang He
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Dongqing South Road, Guiyang 550025, China; (W.-F.L.); (C.-L.Z.); (J.-X.L.); (Y.-H.L.); (K.H.); (L.-T.P.)
| | - Lu-Tai Pan
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Dongqing South Road, Guiyang 550025, China; (W.-F.L.); (C.-L.Z.); (J.-X.L.); (Y.-H.L.); (K.H.); (L.-T.P.)
| | - Lijun Rong
- Department of Microbiology and Immunology, College of Medicine, University of Illinois at Chicago, 909 South Wolcott Avenue, Chicago, IL 60612, USA;
| | - Juan Zou
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Dongqing South Road, Guiyang 550025, China; (W.-F.L.); (C.-L.Z.); (J.-X.L.); (Y.-H.L.); (K.H.); (L.-T.P.)
- Correspondence: (J.Z.); (H.-J.Z.); Tel.: +852-34112956 (H.-J.Z.)
| | - Hong-Jie Zhang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; (Z.-M.L.); (N.Y.T.)
- Correspondence: (J.Z.); (H.-J.Z.); Tel.: +852-34112956 (H.-J.Z.)
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3
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Di Q, Zhao X, Zhang R, Ma X, Liang X, Li X, Gao J, Tang H, Chen W, Xiao W. Novel clerodane-type diterpenoid Cintelactone A suppresses lipopolysaccharide -induced inflammation by promoting ubiquitination, proteasomal degradation of TRAF6. Pharmacol Res 2021; 164:105386. [PMID: 33352228 DOI: 10.1016/j.phrs.2020.105386] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/13/2020] [Accepted: 12/14/2020] [Indexed: 12/29/2022]
Abstract
Cellular inflammation is the underlying cause of several diseases and development of a safe and effective anti-inflammatory drug is need-of-the hour for treatment of diseases like lung inflammation. Callicarpa integerrima Champ. is a well-known herbal medicine with hemostatic and anti-inflammatory functions. However, the exact ingredient exhibiting anti-inflammatory activity in C. integerrima Champ. is largely unknown. Here, we first isolated, purified and characterized a novel clerodane-type diterpenoid Cintelactone A (CA) from C. integerrima Champ. We demonstrated that CA could significantly inhibit lipopolysaccharide (LPS)-induced pro-inflammatory cytokines and mediators production both in mouse peritoneal macrophages and THP1 cells. Consistently, CA also relieved inflammation and reduced LPS-induced lung injury in mice. We systematically elucidated the mechanism of action as well. CA interacted with Arg78 of tumor necrosis factor receptor-associated factor 6 (TRAF6) by hydrogen bonding. It further promoted the K48-linked ubiquitination and proteasomal degradation of TRAF6, and suppressed the activation of NF-κB and MAPKs signaling pathways. Collectively, our study reveals that new clerodane-type diterpenoid CA suppresses LPS-induced inflammation by promoting TRAF6 degradation, suggesting that CA as the potential therapeutic candidate for the treatment of inflammation associated diseases.
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Affiliation(s)
- Qianqian Di
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Immunology, Shenzhen University School of Medicine, Shenzhen, 518060, China
| | - Xibao Zhao
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Immunology, Shenzhen University School of Medicine, Shenzhen, 518060, China
| | - Ruihan Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource of Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Xingyu Ma
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Immunology, Shenzhen University School of Medicine, Shenzhen, 518060, China
| | - Xinxin Liang
- Key Laboratory of Medicinal Chemistry for Natural Resource of Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Xiaoli Li
- Key Laboratory of Medicinal Chemistry for Natural Resource of Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Junbo Gao
- Key Laboratory of Medicinal Chemistry for Natural Resource of Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Haimei Tang
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Immunology, Shenzhen University School of Medicine, Shenzhen, 518060, China
| | - Weilin Chen
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Immunology, Shenzhen University School of Medicine, Shenzhen, 518060, China.
| | - Weilie Xiao
- Key Laboratory of Medicinal Chemistry for Natural Resource of Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China.
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Wein LA, Wurst K, Angyal P, Weisheit L, Magauer T. Synthesis of (-)-Mitrephorone A via a Bioinspired Late Stage C-H Oxidation of (-)-Mitrephorone B. J Am Chem Soc 2019; 141:19589-19593. [PMID: 31770485 DOI: 10.1021/jacs.9b11646] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We present a bioinspired late-stage C-H oxidation of the ent-trachylobane natural product mitrephorone B to mitrephorone A. The realization of this unprecedented transformation was accomplished by either an iron-catalyzed or electrochemical oxidation and enabled access to the densely substituted oxetane in one step. Formation of mitrephorone C, which is lacking the central oxetane unit but features a keto-function at C2, was not formed under these conditions.
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Affiliation(s)
- Lukas Anton Wein
- Institute of Organic Chemistry and Center for Molecular Biosciences , Leopold-Franzens-University Innsbruck , Innrain 80-82 , 6020 Innsbruck , Austria
| | - Klaus Wurst
- Institute of General, Inorganic and Theoretical Chemistry , Leopold-Franzens-University Innsbruck , Innrain 80-82 , 6020 Innsbruck , Austria
| | - Peter Angyal
- Institute of Organic Chemistry , Research Centre for Natural Sciences , Magyar tudósok körútja 2 , 1117 Budapest , Hungary
| | - Lara Weisheit
- Institute of Organic Chemistry and Center for Molecular Biosciences , Leopold-Franzens-University Innsbruck , Innrain 80-82 , 6020 Innsbruck , Austria
| | - Thomas Magauer
- Institute of Organic Chemistry and Center for Molecular Biosciences , Leopold-Franzens-University Innsbruck , Innrain 80-82 , 6020 Innsbruck , Austria
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5
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Liu KX, Qin DP, Zhu YX, Wang SX, Jiao YB, Ge PL, Cheng YX. Populeuphrines A and B, two new cembrane diterpenoids from the resins of Populus euphratica. Nat Prod Res 2019; 34:3108-3116. [PMID: 31264446 DOI: 10.1080/14786419.2019.1610753] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Two new cembrane diterpenoids, named populeuphrines A and B (1 and 2), together with three known analogues (3-5) were isolated from the resins of Populus euphratica. The planar structures and relative configurations of 1 and 2 were elucidated by detailed 1 D and 2 D NMR spectroscopic analyses. The absolute configurations of 1 and 2 were determined by X-ray diffraction analysis and quantum chemical computation. Biological activities of all the isolates against proliferation of human cancer cells and umbilical cord mesenchymal stem cells were evaluated.
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Affiliation(s)
- Kai-Xin Liu
- Department of Pharmacology, School of Basic Medical Sciences, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Da-Peng Qin
- School of Pharmaceutical Sciences, Shenzhen University Health Science Center, Shenzhen, China
| | - Yan-Xia Zhu
- School of Basic Medicine, Shenzhen University Health Science Center, Shenzhen, China
| | - Shao-Xiang Wang
- School of Pharmaceutical Sciences, Shenzhen University Health Science Center, Shenzhen, China
| | - Ya-Bin Jiao
- School of Pharmaceutical Sciences, Shenzhen University Health Science Center, Shenzhen, China
| | - Peng-Ling Ge
- Department of Pharmacology, School of Basic Medical Sciences, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Yong-Xian Cheng
- School of Pharmaceutical Sciences, Shenzhen University Health Science Center, Shenzhen, China
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6
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Salazar FJ, Quintero A, de Domínguez NG, Concepción JL, Acosta ME, Tropper E, Villamizar JE. Synthesis, Antimalarial and Antileishmanial Activity of Novel 13-Benzyl-15,16-Bisnorlabdane Derivatives. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/174751913x13794472538261] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Franklin J. Salazar
- Centro de Química, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas 1020-A, Venezuela
| | - Alberto Quintero
- Departamento de Química Medicinal, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas 1020-A, Venezuela
| | - Neira Gamboa de Domínguez
- Unidad de Bioquimica, Facultad de Farmacia, Universidad Central de Venezuela (UCV), Caracas 1051, Venezuela
| | - Juan L. Concepción
- Laboratorio de Enzimología de Parásitos, Facultad de Ciencias, Universidad de Los Andes (ULA), Mérida 5101, Venezuela
| | - María E. Acosta
- Unidad de Bioquimica, Facultad de Farmacia, Universidad Central de Venezuela (UCV), Caracas 1051, Venezuela
| | - Eleonora Tropper
- Centro de Química, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas 1020-A, Venezuela
| | - José E. Villamizar
- Centro de Química, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas 1020-A, Venezuela
- Departamento de Química Medicinal, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas 1020-A, Venezuela
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7
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Hong YJ, Tantillo DJ. A Maze of Dyotropic Rearrangements and Triple Shifts: Carbocation Rearrangements Connecting Stemarene, Stemodene, Betaerdene, Aphidicolene, and Scopadulanol. J Org Chem 2018; 83:3780-3793. [PMID: 29494166 DOI: 10.1021/acs.joc.8b00138] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Results of quantum chemical investigations shed new light on the mechanisms of formation of the stemarene, stemodene, betaerdene, aphidicolene, and scopadulanol diterpenes from syn-copalyl diphosphate ( syn-CPP). These terpenes are shown to be connected by a complex network of reaction pathways involving concerted but asynchronous dyotropic rearrangements and triple shift rearrangements. The interconnection of these pathways leads to multiple routes for formation of each diterpene, which could lead to different origins for some carbon atoms in a given diterpenes under different conditions.
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Affiliation(s)
- Young J Hong
- Department of Chemistry , University of California-Davis , Davis , California 95616 , United States
| | - Dean J Tantillo
- Department of Chemistry , University of California-Davis , Davis , California 95616 , United States
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8
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García-Sosa K, Aldana-Pérez R, Moo RVE, Simá-Polanco P, Peña-Rodríguez LM. Dinimbidiol Ether, a Novel Bioactive Dimeric Diterpene from the Root Extract of Cnidoscolus souzae. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200903] [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
The radical scavenging assay-guided fractionation of the root extract of Cnidoscolus souzae resulted in the isolation and identification of a novel bioactive dimeric diterpene with an ether linkage which has been designated as dinimbidiol ether (2). Evaluation of the antioxidant activity using the DPPH reduction assay showed that 2 is the most active metabolite in the crude extract of the plant.
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Affiliation(s)
- Karlina García-Sosa
- Laboratorio de Química Orgánica, Unidad de Biotecnología, Centro de investigación Científica de Yucatán, Calle 43 No.130, Col. Chuburná de Hidalgo, CP 97205, Mérida, Yucatán, México
| | - Rodolfo Aldana-Pérez
- Laboratorio de Química Orgánica, Unidad de Biotecnología, Centro de investigación Científica de Yucatán, Calle 43 No.130, Col. Chuburná de Hidalgo, CP 97205, Mérida, Yucatán, México
| | - Reyna V. Ek Moo
- Laboratorio de Química Orgánica, Unidad de Biotecnología, Centro de investigación Científica de Yucatán, Calle 43 No.130, Col. Chuburná de Hidalgo, CP 97205, Mérida, Yucatán, México
| | - Paulino Simá-Polanco
- Unidad de Recursos Naturales, Centro de investigación Científica de Yucatán, Calle 43 No.130, Col. Chuburná de Hidalgo, CP 97205, Mérida, Yucatán, México
| | - Luis M. Peña-Rodríguez
- Laboratorio de Química Orgánica, Unidad de Biotecnología, Centro de investigación Científica de Yucatán, Calle 43 No.130, Col. Chuburná de Hidalgo, CP 97205, Mérida, Yucatán, México
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9
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Yilmaz A, Crowley RS, Sherwood AM, Prisinzano TE. Semisynthesis and Kappa-Opioid Receptor Activity of Derivatives of Columbin, a Furanolactone Diterpene. JOURNAL OF NATURAL PRODUCTS 2017; 80:2094-2100. [PMID: 28718638 PMCID: PMC5665014 DOI: 10.1021/acs.jnatprod.7b00327] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Columbin (1) is a furanolactone diterpene isolated from the roots of Jateorhiza and Tinospora species. These species generally grow in Asia and Africa and have been used in folk medicine for their apparent analgesic and antipyretic activities. Columbin (1) is of particular interest due to its structural similarity to the known kappa-opioid receptor (KOR) agonist salvinorin A. Given that the KOR is of interest in the study of many serious diseases, such as anxiety, depression, and drug addiction, obtaining natural or semisynthetic molecules with KOR activity recently has gained much interest. For this reason, in the present study, derivatives of 1 were designed and synthesized using known structure-activity relationships of salvinorin A at KORs. The structures of the columbin analogues prepared were elucidated by NMR spectroscopy and mass spectroscopy, and their KOR activity was investigated in vitro by inhibition of forskolin-induced cAMP accumulation. Slight improvements in KOR activity were observed in columbin derivatives over their parent compound. However, despite the structural similarities to salvinorin A, neither columbin (1) nor its derivatives were potent KOR ligands. This work represents not only the first evaluation of columbin (1) at the KOR but also one of the first works to explore synthetic strategies that are tolerated on the columbin core.
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Affiliation(s)
- Anil Yilmaz
- Department of Chemistry, Faculty of Arts and Sciences, Istanbul Technical University, 34469 Maslak, İstanbul, Turkey
| | - Rachel Saylor Crowley
- Department of Medicinal Chemistry, School of Pharmacy, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Alexander M. Sherwood
- Department of Medicinal Chemistry, School of Pharmacy, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Thomas E. Prisinzano
- Department of Medicinal Chemistry, School of Pharmacy, The University of Kansas, Lawrence, Kansas 66045, United States
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11
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Marcos I, Moro R, Gil-Mesón A, Díez D. 7-6-5 Tricarbocyclic Diterpenes. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2016. [DOI: 10.1016/b978-0-444-63602-7.00005-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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12
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13
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Usui K, Kanbe M, Nakada AM. Total Synthesis of (−)-Bucidarasin A Starting from an Original Chiral Building Block. Org Lett 2014; 16:4734-7. [DOI: 10.1021/ol502129u] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kenji Usui
- Department of Chemistry and
Biochemistry, Faculty of Science and Engineering, Waseda University 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Misaki Kanbe
- Department of Chemistry and
Biochemistry, Faculty of Science and Engineering, Waseda University 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - and Masahisa Nakada
- Department of Chemistry and
Biochemistry, Faculty of Science and Engineering, Waseda University 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
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14
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Liu SJ, Liao ZX, Liu C, Ji LJ, Sun HF. Two new sesquiterpenes from Artemisia sieversiana. Fitoterapia 2014; 97:43-9. [DOI: 10.1016/j.fitote.2014.05.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 05/12/2014] [Accepted: 05/16/2014] [Indexed: 10/25/2022]
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15
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Fabio GD, Romanucci V, De Marco A, Zarrelli A. Triterpenoids from Gymnema sylvestre and their pharmacological activities. Molecules 2014; 19:10956-81. [PMID: 25072200 PMCID: PMC6270848 DOI: 10.3390/molecules190810956] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/03/2014] [Accepted: 07/04/2014] [Indexed: 11/16/2022] Open
Abstract
Because plants are estimated to produce over 200,000 metabolites, research into new natural substances that can be used in the pharmaceutical, agrochemical and agro-industrial production of drugs, biopesticides and food additives has grown in recent years. The global market for plant-derived drugs over the last decade has been estimated to be approximately 30.69 billion USD. A relevant specific example of a plant that is very interesting for its numerous pharmacological properties, which include antidiabetic, anticarcinogenic, and neuroprotective effects is Gymnema sylvestre, used as a medicinal plant in Asia for thousands of years. Its properties are attributed to triterpenoidic saponins. In light of the considerable interest generated in the chemistry and pharmacological properties of G. sylvestre triterpenes and their analogues, we have undertaken this review in an effort to summarise the available literature on these promising bioactive natural products. The review will detail studies on the isolation, chemistry and bioactivity of the triterpenoids, which are presented in the tables. In particular the triterpenoids oxidised at C-23; their isolation, distribution in different parts of the plant, and their NMR spectral data; their names and physico-chemical characterisation; and the biological properties associated with these compounds, with a focus on their potential chemotherapeutic applications.
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Affiliation(s)
- Giovanni Di Fabio
- Department of Chemical Sciences, University Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, IT-80126 Napoli, Italy.
| | - Valeria Romanucci
- Department of Chemical Sciences, University Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, IT-80126 Napoli, Italy.
| | - Anna De Marco
- Department of Biology, University Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, IT-80126 Napoli, Italy.
| | - Armando Zarrelli
- Department of Chemical Sciences, University Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, IT-80126 Napoli, Italy.
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Lou H, Zheng S, Li T, Zhang J, Fei Y, Hao X, Liang G, Pan W. Vulgarisin A, a New Diterpenoid with a Rare 5/6/4/5 Ring Skeleton from the Chinese Medicinal Plant Prunella vulgaris. Org Lett 2014; 16:2696-9. [DOI: 10.1021/ol5009763] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Huayong Lou
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Shan Zheng
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Tianlei Li
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Jianxin Zhang
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Yue Fei
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Xiaojiang Hao
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Guangyi Liang
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
| | - Weidong Pan
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, PR China
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17
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Li RJ, Lin ZM, Kang YQ, Guo YX, Lv X, Zhou JC, Wang S, Lou HX. Cembrane-type diterpenoids from the Chinese liverworts Chandonanthus hirtellus and C. birmensis. JOURNAL OF NATURAL PRODUCTS 2014; 77:339-345. [PMID: 24491225 DOI: 10.1021/np400936t] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Six new cembrane-type diterpenoids (1-6) were isolated from two species of Chandonanthus: Chandonanones A, B, and D-F (1, 2, and 4-6) were isolated from C. hirtellus, and chandonanones B, C, E, and F (2, 3, 5, and 6) from C. birmensis. Five known diterpenoids, (8E)-4α-acetoxy-12α,13α-epoxycembra-1(15),8-diene (7), isochandonanthone (8), chandonanthone (9), anadensin (10), and 2,10,14-triacetoxy-7,8,18,19-diepoxydolabell-3(E)-ene (11), were also obtained. The structures of the new metabolites were established by analyses of their spectroscopic data (1D NMR, 2D NMR, HRESIMS, and IR). The absolute configurations of compounds 1 and 2 were unequivocally confirmed using single-crystal X-ray diffraction analysis with Cu Kα radiation. Cytotoxicity tests of the isolated diterpenoids against seven cancer cell lines (DU145, PC3, A549, PC12, NCI-H292, NCI-H1299, and A172) revealed that some of the diterpenoids had weak activity.
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Affiliation(s)
- Rui-Juan Li
- Department of Natural Products Chemistry, Key Lab of Chemical Biology of the Ministry of Education, School of Pharmaceutical Science, Shandong University , Jinan 250012, People's Republic of China
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18
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Wang H, Li MY, Katele FZ, Satyanandamurty T, Wu J, Bringmann G. Decandrinin, an unprecedented C9-spiro-fused 7,8-seco-ent-abietane from the Godavari mangrove Ceriops decandra. Beilstein J Org Chem 2014; 10:276-81. [PMID: 24605147 PMCID: PMC3943825 DOI: 10.3762/bjoc.10.23] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 12/18/2013] [Indexed: 11/23/2022] Open
Abstract
Decandrinin (1), an unprecedented C9-spiro-fused 7,8-seco-ent-abietane, was obtained from the bark of an Indian mangrove, Ceriops decandra, collected in the estuary of Godavari, Andhra Pradesh. The constitution and the relative configuration of 1 were determined by HRMS (ESI) and extensive NMR investigations, and the absolute configuration by circular dichroism (CD) and optical-rotatory dispersion (ORD) spectroscopy in combination with quantum-chemical calculations. Decandrinin is the first 7,8-seco-ent-abietane.
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Affiliation(s)
- Hui Wang
- Key Laboratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, P. R. China
- Hubei Key Laboratory of Natural Products Research and Development, College of Chemistry and Life Science, China Three Gorges University, Yichang 443002, P. R. China
| | - Min-Yi Li
- Marine Drugs Research Center, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, P. R. China
| | - Félix Zongwe Katele
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, Würzburg 97074, Germany
| | | | - Jun Wu
- Marine Drugs Research Center, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, P. R. China
| | - Gerhard Bringmann
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, Würzburg 97074, Germany
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19
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Yang Q, Draghici C, Njardarson JT, Li F, Smith BR, Das P. Evolution of an oxidative dearomatization enabled total synthesis of vinigrol. Org Biomol Chem 2014; 12:330-44. [PMID: 24258093 PMCID: PMC3901359 DOI: 10.1039/c3ob42191k] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The evolution of the synthetic strategy resulting in a total synthesis of vinigrol is presented. Oxidative dearomatization/intramolecular Diels-Alder cycloaddition has served as the successful cornerstone for all of the approaches. Extensive radical cyclization efforts to form the tetracyclic core resulted in interesting and surprising reaction outcomes, none of which could be advanced to vinigrol. These cyclization obstacles were successfully overcome by using Heck instead of radical cyclizations. The total synthesis features a trifluoroethyl ether protecting group being used for the first time in organic synthesis. The logic of its selection and the group's importance beyond protecting the C8a hydroxyl group is presented along with a discussion of strategies for its removal. Because of the compact tetracyclic cage the route is built around many unusual reaction observations and solutions have emerged. For example, a first of its kind Grob fragmentation reaction featuring a trifluoroethyl leaving group has been uncovered, interesting interrupted selenium dioxide allylic oxidations have been observed as well as intriguing catalyst and counterion dependent directed hydrogenations.
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Affiliation(s)
- Qingliang Yang
- Department of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, Ithaca, NY 14853, USA
| | - Cristian Draghici
- Department of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, Ithaca, NY 14853, USA
| | - Jon T. Njardarson
- Department of Chemistry and Biochemistry, University of Arizona, 1306 E. University Blvd., Tucson, AZ 85721, USA. Fax: (+1) 520-621-8407; Tel: (+1) 520 621-0754
| | | | - Brandon R. Smith
- Department of Chemistry and Biochemistry, University of Arizona, 1306 E. University Blvd., Tucson, AZ 85721, USA. Fax: (+1) 520-621-8407; Tel: (+1) 520 621-0754
| | - Pradipta Das
- Department of Chemistry and Biochemistry, University of Arizona, 1306 E. University Blvd., Tucson, AZ 85721, USA. Fax: (+1) 520-621-8407; Tel: (+1) 520 621-0754
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20
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Wang B, Wang L, Li Y, Liu Y. Heterocyclic terpenes: linear furano- and pyrroloterpenoids. RSC Adv 2014. [DOI: 10.1039/c3ra48040b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This review of furano- and pyrroloterpenoids covers the literature, 180 articles in all, published from January 2006 to December 2013.
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Affiliation(s)
- Bin Wang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology
- South China Sea Institute of Oceanology
- Chinese Academy of Sciences
- Guangzhou, China
- Shenzhen Shajing Affiliated Hospital of Guangzhou Medical University
| | - Lishu Wang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology
- South China Sea Institute of Oceanology
- Chinese Academy of Sciences
- Guangzhou, China
- Jilin Provincial Academy of Chinese Medicine Sciences
| | - Yinglei Li
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology
- South China Sea Institute of Oceanology
- Chinese Academy of Sciences
- Guangzhou, China
- Jilin Provincial Academy of Chinese Medicine Sciences
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology
- South China Sea Institute of Oceanology
- Chinese Academy of Sciences
- Guangzhou, China
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21
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Hutt OE, Doan TL, Georg GI. Synthesis of skeletally diverse and stereochemically complex library templates derived from isosteviol and steviol. Org Lett 2013; 15:1602-5. [PMID: 23530630 PMCID: PMC3638842 DOI: 10.1021/ol400385w] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We have applied a diversity-oriented approach for the synthesis of skeletally diverse and stereochemically complex templates for small-molecule library production by performing Beckmann rearrangement and Beckmann fragmentation reactions on the bicyclo[3.2.1]octane rings of steviol and isosteviol, aglycones derived from the diterpene natural product stevioside. The optimization of these two reaction pathways is presented along with the successful application of a photo-Beckmann rearrangement. This work also led to the discovery of cyano-Prins-type and Thorpe-Ziegler-type cyclization reactions.
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Affiliation(s)
- Oliver E Hutt
- Institute for Therapeutics Discovery and Development, Department of Medicinal Chemistry, College of Pharmacy, University of Minnesota, 717 Delaware Street SE, Minneapolis, Minnesota 55414, United States
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22
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Yang R, Chen JB, Dai XY, Huang R, Xiao CF, Gao ZY, Yang B, Yang LJ, Yan SJ, Hong-Bin Zhang, Qing C, Lin J. Inclusion complex of GA-13315 with cyclodextrins: Preparation, characterization, inclusion mode and properties. Carbohydr Polym 2012; 89:89-97. [DOI: 10.1016/j.carbpol.2012.02.054] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Revised: 02/18/2012] [Accepted: 02/20/2012] [Indexed: 11/26/2022]
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23
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Zhou YJ, Gao W, Rong Q, Jin G, Chu H, Liu W, Yang W, Zhu Z, Li G, Zhu G, Huang L, Zhao ZK. Modular pathway engineering of diterpenoid synthases and the mevalonic acid pathway for miltiradiene production. J Am Chem Soc 2012; 134:3234-41. [PMID: 22280121 DOI: 10.1021/ja2114486] [Citation(s) in RCA: 275] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Microbial production can be advantageous over the extraction of phytoterpenoids from natural plant sources, but it remains challenging to rationally and rapidly access efficient pathway variants. Previous engineering attempts mainly focused on the mevalonic acid (MVA) or methyl-d-erythritol phosphate (MEP) pathways responsible for the generation of precursors for terpenoids biosynthesis, and potential interactions between diterpenoids synthases were unexplored. Miltiradiene, the product of the stepwise conversion of (E,E,E)-geranylgeranyl diphosphate (GGPP) catalyzed by diterpene synthases SmCPS and SmKSL, has recently been identified as the precursor to tanshionones, a group of abietane-type norditerpenoids rich in the Chinese medicinal herb Salvia miltiorrhiza . Here, we present the modular pathway engineering (MOPE) strategy and its application for rapid assembling synthetic miltiradiene pathways in the yeast Saccharomyces cerevisiae . We predicted and analyzed the molecular interactions between SmCPS and SmKSL, and engineered their active sites into close proximity for enhanced metabolic flux channeling to miltiradiene biosynthesis by constructing protein fusions. We show that the fusion of SmCPS and SmKSL, as well as the fusion of BTS1 (GGPP synthase) and ERG20 (farnesyl diphosphate synthase), led to significantly improved miltiradiene production and reduced byproduct accumulation. The MOPE strategy facilitated a comprehensive evaluation of pathway variants involving multiple genes, and, as a result, our best pathway with the diploid strain YJ2X reached miltiradiene titer of 365 mg/L in a 15-L bioreactor culture. These results suggest that terpenoids synthases and the precursor supplying enzymes should be engineered systematically to enable an efficient microbial production of phytoterpenoids.
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Affiliation(s)
- Yongjin J Zhou
- Division of Biotechnology, Dalian Institute of Chemical Physics, CAS, Dalian 116023, People's Republic of China
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Shiono Y, Kikuchi M, Koseki T, Murayama T, Kwon E, Aburai N, Kimura KI. Isopimarane diterpene glycosides, isolated from endophytic fungus Paraconiothyrium sp. MY-42. PHYTOCHEMISTRY 2011; 72:1400-1405. [PMID: 21612804 DOI: 10.1016/j.phytochem.2011.04.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Revised: 02/18/2011] [Accepted: 04/21/2011] [Indexed: 05/30/2023]
Abstract
Six isopimarane diterpenes, compounds 1-6, were isolated from the endophytic fungus Paraconiothyrium sp. MY-42. Compound 1 possesses a 19-glucopyranosyloxy group. Its structure was first elucidated by spectroscopic data analysis and finally confirmed by X-ray crystallography, whereas structures 2-6 were mainly elucidated based on the analysis of spectroscopic evidence. Compounds 2 and 3 showed moderate cytotoxicities against the human promyelocytic leukemia cell line HL60 (IC₅₀ 6.7 μM value for 2 and 9.8 μM for 3).
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Affiliation(s)
- Yoshihito Shiono
- Department of Bioresource Engineering, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata 997-8555, Japan.
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25
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Bonito MC, Cicala C, Marcotullio MC, Maione F, Mascolo N. Biological Activity of Bicyclic and Tricyclic Diterpenoids from Salvia Species of Immediate Pharmacological and Pharmaceutical Interest. Nat Prod Commun 2011. [DOI: 10.1177/1934578x1100600839] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Diterpenoids are a class of compounds that derive from the condensation of four isoprene units that leads to a wide variety of complex chemical structures, including acyclic bi-, tri-and tetra-cyclic compounds; in Salvia species, only bi-, tri-and tetra-cyclic compounds have been found. This review covers a wide range of biological activities and mode of action of diterpenoids isolated from Salvia species that might raise some pharmacological and pharmaceutical interest. We have produced a synoptic table where the biological activities of the main active principles are summarized. Our analysis emphasizes that diterpenoids from Salvia species continue to be a plant defence system since their antimicrobic activity. Experimental studies show that most of diterpenoids considered have cytotoxic and / or antiproliferative activity. Some of them have also cardiovascular and central effects. In a less extended manner, diterpenoids from Salvia species show gastrointestinal, urinary, antinflammatory, antidiabetic, ipolipidemic and antiaggregating effects. In the last decade, several clinical trials have been developed in order to investigate the real value of Salvia extracts treatment; results obtained are promising and confer scientific basis in the use of medicinal plants from folk medicine.
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Affiliation(s)
- Maria Carmela Bonito
- Department of Experimental Pharmacology, University of Naples Federico II, via Domenico Montesano 49, 80131 Naples, Italy
| | - Carla Cicala
- Department of Experimental Pharmacology, University of Naples Federico II, via Domenico Montesano 49, 80131 Naples, Italy
| | - Maria Carla Marcotullio
- Department of Pharmaceutical Chemistry and Technology, University of Perugia, via del Liceo 1, 06123 Perugia, Italy
| | - Francesco Maione
- Department of Experimental Pharmacology, University of Naples Federico II, via Domenico Montesano 49, 80131 Naples, Italy
| | - Nicola Mascolo
- Department of Experimental Pharmacology, University of Naples Federico II, via Domenico Montesano 49, 80131 Naples, Italy
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26
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Abstract
Diketopiperazines (DKPs), which are cyclic dipeptides, have been detected in a variety of natural resources. Recently, the interest in these compounds increased significantly because of their remarkable bioactivity. This review deals with the chemical structures, biosynthetic pathways, and biological activities of DKPs from marine microorganisms, sponges, sea stars, tunicates (ascidians), and red algae. The literature has been covered up to December 2008, and a total 124 DKPs from 104 publications have been discussed and reviewed. Some of these compounds have been found to possess various bioactivities including cytotoxicity, and antibacterial, antifungal, antifouling, plant-growth regulatory, and other activities.
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Affiliation(s)
- Riming Huang
- Research Center for Marine Microbes, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, P R China
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27
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A novel 18-norclerodane diterpenoid from the roots of Tinospora sagittata var. yunnanensis. Molecules 2010; 15:8360-5. [PMID: 21081856 PMCID: PMC6259588 DOI: 10.3390/molecules15118360] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 11/04/2010] [Accepted: 11/10/2010] [Indexed: 11/16/2022] Open
Abstract
A novel 18-nor-clerodane diterpenoid named sagitone (1) was isolated from the 95% ethanol extract of dry roots of Tinospora sagittata var. yunnanensis together with the five known diterpenoids columbin (2), palmatoside C (3), fibleucin (4), tinophylloloside (5) and epitinophylloloside (6). The structure of the new compound 1 was determined based on MS, IR, 1D and 2D NMR spectral data. The compounds 1~6 did not show significant cytotoxic activity against cancer cell lines K562 and HL-60.
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28
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Electronic Control of Product Distribution in the [5+5]-Coupling of ortho-Alkynylbenzaldehyde Derivatives and γ,δ-Unsaturated Carbene Complexes. Tetrahedron 2010; 66:4954-4960. [PMID: 20711418 DOI: 10.1016/j.tet.2010.04.117] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The coupling of highly oxygenated ortho-alkynylbenzaldehyde derivatives with γ,δ-carbene complexes was evaluated systematically. In all of the electron-rich systems investigated the exclusive product of the reaction is the dihydrophenanthrene derivative. Only the extremely electron withdrawing methanesulfonate group can prevent this process from occurring. The use of the base additive collidine resulted in a surprising yield enhancement but no other discernable effect on the course of the reaction. Dihydrophenanthrene formation was attributed to rapid dehydration after the opening of a benzo-oxanorbornene intermediate.
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Hong YJ, Tantillo DJ. Formation of Beyerene, Kaurene, Trachylobane, and Atiserene Diterpenes by Rearrangements That Avoid Secondary Carbocations. J Am Chem Soc 2010; 132:5375-86. [DOI: 10.1021/ja9084786] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Young J. Hong
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616
| | - Dean J. Tantillo
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616
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30
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First Example of Diterpenoids from 14,15-Cyclopimarane in the Roots of Linum usitatissimum. Helv Chim Acta 2009. [DOI: 10.1002/hlca.200900104] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Chen J, Sun Z, Zhang Y, Zeng X, Qing C, Liu J, Li L, Zhang H. Synthesis of gibberellin derivatives with anti-tumor bioactivities. Bioorg Med Chem Lett 2009; 19:5496-9. [DOI: 10.1016/j.bmcl.2009.07.090] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2009] [Revised: 06/26/2009] [Accepted: 07/14/2009] [Indexed: 11/27/2022]
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33
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Rijo P, Simões MF, Duarte A, Rodríguez B. Isopimarane diterpenoids from Aeollanthus rydingianus and their antimicrobial activity. PHYTOCHEMISTRY 2009; 70:1161-1165. [PMID: 19631355 DOI: 10.1016/j.phytochem.2009.06.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Revised: 06/08/2009] [Accepted: 06/11/2009] [Indexed: 05/28/2023]
Abstract
Four acyloxy-isopimarane derivatives along with two known isopimarane diterpenoids, the flavone cirsimaritin and the sterols beta-sitosterol and stigmasterol were isolated from the aerial parts of Aeollanthus rydingianus. The structures of the compounds were established on the basis of spectroscopic analysis and chemical evidence. The isolated substances were screened for antimicrobial activity against Gram-positive and Gram-negative bacteria and a yeast strain. 19-Acetoxy-7,15-isopimaradien-3beta-ol and 7,15-isopimaradien-19-ol showed minimum inhibitory concentration (MIC) values of 3.90-15.62 microg/ml for Staphylococcus aureus and of 7.81microg/ml for Enterococcus hirae.
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Affiliation(s)
- Patricia Rijo
- Faculdade de Farmácia da Universidade de Lisboa, iMed. UL, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Maria Fátima Simões
- Faculdade de Farmácia da Universidade de Lisboa, iMed. UL, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Aida Duarte
- Faculdade de Farmácia da Universidade de Lisboa, iMed. UL, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Benjamín Rodríguez
- Instituto de Química Orgánica, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain.
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Prisinzano TE. Natural products as tools for neuroscience: discovery and development of novel agents to treat drug abuse. JOURNAL OF NATURAL PRODUCTS 2009; 72:581-7. [PMID: 19099466 PMCID: PMC2788013 DOI: 10.1021/np8005748] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Much of what we know about the neurosciences is the direct result of studying psychoactive natural products. Unfortunately, there are many gaps in our understanding of the basic biological processes that contribute to the etiology of many CNS disorders. The investigation of psychoactive natural products offers an excellent approach to identify novel agents to treat CNS disorders and to find new chemical tools to better elucidate their biological mechanisms. This review will detail recent progress in a program directed toward investigating psychoactive natural products with the goal of treating drug abuse by targeting kappa opioid receptors.
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Affiliation(s)
- Thomas E Prisinzano
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66045, USA.
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35
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Blunt JW, Copp BR, Hu WP, Munro MHG, Northcote PT, Prinsep MR. Marine natural products. Nat Prod Rep 2009; 26:170-244. [PMID: 19177222 DOI: 10.1039/b805113p] [Citation(s) in RCA: 408] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This review covers the literature published in 2007 for marine natural products, with 948 citations(627 for the period January to December 2007) referring to compounds isolated from marine microorganisms and phytoplankton, green algae, brown algae, red algae, sponges, cnidarians,bryozoans, molluscs, tunicates, echinoderms and true mangrove plants. The emphasis is on new compounds (961 for 2007), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.1 Introduction, 2 Reviews, 3 Marine microorganisms and phytoplankton, 4 Green algae, 5 Brown algae, 6 Red algae, 7 Sponges, 8 Cnidarians, 9 Bryozoans, 10 Molluscs, 11 Tunicates (ascidians),12 Echinoderms, 13 Miscellaneous, 14 Conclusion, 15 References.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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37
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Ungur N, Grinco M, Kulciţki V, Barba A, Bîzîcci T, Vlad PF. Isolation of Ent-Kaur-16-En-19-Oic and Ent-Trachiloban-19-Oic Acids from the Sunflower Helianthus Annuus L.Dry Waste. CHEMISTRY JOURNAL OF MOLDOVA 2008. [DOI: 10.19261/cjm.2008.03(2).01] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
A relatively simple method for isolation of the mixture of ent-kaur-16-en-19-oic (1) and ent-trachiloban-19-oic (2) acids from dry waste of sunflower processing has been elaborated, and it has been shown that the waste can serve as an accessible source of ent-kauranic and ent-trachilobanic diterpenoids.
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38
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Marcos I, Castañeda L, Basabe P, Díez D, Urones J. Synthesis of sibiricinone A, sibiricinone B and leoheterin. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.09.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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39
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Reboul I, Boddaert T, Coquerel Y, Rodriguez J. Synthetic Studies towards Guaianolide Sesquiterpene Lactones. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800825] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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Tang W, Hioki H, Harada K, Kubo M, Fukuyama Y. Clerodane diterpenoids with NGF-potentiating activity from Ptychopetalum olacoides. JOURNAL OF NATURAL PRODUCTS 2008; 71:1760-1763. [PMID: 18821798 DOI: 10.1021/np8004002] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Four new clerodane-type diterpenoids, ptychonolide (1), 20-O-methylptychonal acetal (2), and an equilibrium mixture of ptychonal hemiacetal (3) and ptychonal (4), were isolated from the MeOH extract of the bark of a Brazilian plant, Ptychopetalum olacoides. The structure of 1 was elucidated as a clerodane-type diterpenoid on the basis of spectroscopic data, whereas 2 was assigned to an acetal derivative of 1. Compounds 3 and 4 existed as an equilibrium mixture. A mixture of compounds 3 and 4 was found to exhibit neurite outgrowth-promoting activities on NGF-mediated PC12 cells at concentrations ranging from 0.1 to 10.0 microM.
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Affiliation(s)
- Wanxia Tang
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan
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Ortega MJ, Zubía E, Sánchez MC, Carballo JL. Cembrane diterpenes from the gorgonian Leptogorgia laxa. JOURNAL OF NATURAL PRODUCTS 2008; 71:1637-1639. [PMID: 18698819 DOI: 10.1021/np8002639] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The new cembrane diterpenes leptodienone A (2) and leptodienone B (3) and the known compounds lopholide, lophodiol B, lophodione, and lophotoxin (1) have been isolated from the gorgonian Leptogorgia laxa collected in the Gulf of California. The structures of the new metabolites have been established by spectroscopic techniques. The in vitro cytotoxicity of the new compounds has been tested against three human tumor cell lines.
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Affiliation(s)
- María J Ortega
- Departamento de Química Orgánica, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Apartado 40, 11510-Puerto Real (Cádiz), Spain
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Marcos I, Castañeda L, Basabe P, Díez D, Urones J. Synthetic studies to highly functionalised B ring labdanes. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.06.083] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Boukouvalas J, Wang JX. Structure Revision and Synthesis of a Novel Labdane Diterpenoid from Zingiber ottensii. Org Lett 2008; 10:3397-9. [DOI: 10.1021/ol8011919] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- John Boukouvalas
- Département de Chimie, Université Laval, Quebec City, Quebec G1K 7P4, Canada
| | - Jian-Xin Wang
- Département de Chimie, Université Laval, Quebec City, Quebec G1K 7P4, Canada
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Esquivel B. Rearranged Clerodane and Abietane Derived Diterpenoids from American Salvia Species. Nat Prod Commun 2008. [DOI: 10.1177/1934578x0800300628] [Citation(s) in RCA: 3] [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 genus Salvia L. (Tribe Mentheae) is the largest of the Lamiaceae with 1000 species widespread throughout the world. Phytochemical studies of several Salvia species have established an interesting chemical profile for the genus including sterols, flavonoids and triterpenoids. However, the most characteristic secondary metabolites of the genus are diterpenoids. One of the most distinguishing features of Salvia genus is the number of rearranged diterpene skeletons isolated from these plants. Until now, over 30 rearranged diterpene skeletons have been described for both Old and New World representatives of the genus. In this review, a survey of recent literature data regarding rearranged clerodane and abietane diterpenoids from American Salvia species is presented.
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Affiliation(s)
- Baldomero Esquivel
- Instituto de Química de la Universidad Nacional Autónoma de México, Circuito Exterior de Ciudad Universitaria, Coyoacan 04510, México D.F., México
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