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Rosales Martínez A, Rodríguez-García I. Marine Puupehenone and Puupehedione: Synthesis and Future Perspectives. Mar Drugs 2023; 21:322. [PMID: 37367647 DOI: 10.3390/md21060322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 05/21/2023] [Accepted: 05/24/2023] [Indexed: 06/28/2023] Open
Abstract
Puupehenone and puupehedione are natural products isolated from marine organisms. These compounds display a broad spectrum of biological activities, the in vitro antitubercular activity of puupehenone being a stand out, and are equipped with an interesting structural complexity. These products have served to stimulate the continual interest of the synthetic community. The first part of this article is a review of their total synthesis, using natural compounds which have the potential to be transformed into these marine compounds as starting materials; the synthetic routes employed to generate the basic skeleton; and the advances made to synthesize the pyran C ring with the required diastereoselectivity to obtain the natural products. Finally, this perspective shows a personal reflection of the authors on a possible unified and efficient retrosynthetic route that could allow easy access to these natural products, as well as their epimers at the C8 carbon and which could be used to address future biological issues in the production of pharmacologically active compounds.
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Affiliation(s)
- Antonio Rosales Martínez
- Department of Chemical Engineering, Escuela Politécnica Superior, University of Sevilla, 41011 Sevilla, Spain
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2
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Eichhorn E, Schroeder F. From Ambergris to (-)-Ambrox: Chemistry Meets Biocatalysis for Sustainable (-)-Ambrox Production. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:5042-5052. [PMID: 36961824 DOI: 10.1021/acs.jafc.2c09010] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
(-)-Ambrox, the most prominent olfactive component of ambergris is one of the most widely used biodegradable fragrance ingredients. Traditionally it is produced from the diterpene sclareol, modified and cyclized into (-)-ambrox by classical chemistry steps. The availability of the new feedstock (E)-β-farnesene produced by fermentation opened new pathways to (E,E)-homofarnesol as a precursor to (-)-ambrox. Combining chemical transformation of (E)-β-farnesene to (E,E)-homofarnesol and its enzymatic cyclization at the industrial scale to (-)-ambrox with an engineered squalene hopene cyclase illustrates the potential of biotechnology for a more sustainable process, thus meeting the increasing consumers' demand for sustainably produced high quality perfumery and consumer goods. This review traces back to the origin of ambergris and the search for the source of its mysterious odor, leading to the discovery of (-)-ambrox as its main olfactive principle. It discusses the plethora of ways explored for its synthesis from diverse starting materials and presents the development of a process with significantly improved carbon efficiency for the industrial production of (-)-ambrox as 100% renewable Ambrofix.
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Affiliation(s)
- Eric Eichhorn
- Fragrances S&T, Ingredients Research, Givaudan Schweiz AG, Kemptpark 50, CH-8310 Kemptthal, Switzerland
| | - Fridtjof Schroeder
- Fragrances S&T, Ingredients Research, Givaudan Schweiz AG, Kemptpark 50, CH-8310 Kemptthal, Switzerland
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3
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Synthesis and Biological Evaluation of Sclareolide-Indole Conjugates and Their Derivatives. Molecules 2023; 28:molecules28041737. [PMID: 36838727 PMCID: PMC9961340 DOI: 10.3390/molecules28041737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
Sclareolide is a sesquiterpene lactone isolated from various plant sources in tons every year and is commercially used as a flavor ingredient in the cosmetic and food industries. Antitumor and antiviral activities of sclareolide have been previously reported. However, biological studies of sclareolide synthetic analogous are few. In view of these, we developed a robust synthetic method that allows the assembly of 36 novel sclareolide-indole conjugates and their derivatives. The synthetic method was based on TiCl4-promoted nucleophilic substitution of sclareolide-derived hemiacetal 4, while electron-rich aryles including indoles, polyphenol ethers, and pyrazolo [1,5-a]pyridine were good substrates. The stereochemistry of the final products was confirmed by single-crystal X-ray diffraction analysis, while the antiproliferative activities of selected final products were tested in K562 and MV4-11 cancer cell lines. Cytometric flow analysis shows that lead compounds 8k- and 10-induced robust apoptosis in MV4-11 cancer cells, while they exhibited weak impact on cell cycle progression. Taken together, our study suggests that sclareolide could be a good template and substrate for the synthesis of novel antiproliferative compounds.
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4
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Fang Y, Wang Z, Shi Y, Liu F, Wang J, Yang T, Xin Y, Gu Z, Zhang L. Efficient Biotransformation of Sclareol to Sclareolide by Filobasidium magnum JD1025. Appl Biochem Biotechnol 2023; 195:1184-1196. [PMID: 36342623 DOI: 10.1007/s12010-022-04225-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/21/2022] [Indexed: 11/09/2022]
Abstract
In this study, a newly isolated strain Filobasidium magnum JD1025 was investigated for its production of sclareolide, which was verified to be a valuable raw material in various industrial fields. Together with a comprehensive analysis of the genome sequence, effective fermentation method to convert sclareol to sclareolide via the isolated strain was explored and optimized by taking the selected co-solvent and nitrogen source into account. The results showed that the final conversion rate could be achieved at 88.79 ± 1.06% with the initial sclareol concentration of 30 g·L-1 after 72 h in baffled flask. The corresponding yield concentration of sclareolide was 21.62 ± 0.26 g·L-1 and the conversion rate per unit thallus attained to 6.11 ± 0.06 % g-1·L-1. Overall, the current study suggested a valid method for the application of Filobasidium magnum JD1025 as bio-transformer to produce sclareolide from sclareol.
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Affiliation(s)
- Yakun Fang
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China.,Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Zilong Wang
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China.,Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Yi Shi
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China.,Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Fan Liu
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China.,Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Junhua Wang
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China.,Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Ting Yang
- Wuxi Food Safety Inspection and Test Center, Technology Innovation Center of Special Food for State Market Regulation, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Yu Xin
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China. .,Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China.
| | - Zhenghua Gu
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China.,Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China
| | - Liang Zhang
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China. .,Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, 214122, Jiangsu, People's Republic of China.
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5
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Zhang C, Li Y, Chu Z, Yuan S, Qiao Y, Zhang J, Li L, Zhang Y, Tian R, Tang Y, Lou H. Rearranged 19-nor-7,8-seco-labdane diterpenoids and Diels−Alder cycloadducts from the Chinese liverwort Pallavicinia ambigua: Structural elucidation, photoinduced rearrangement, and cytotoxic activity. CHINESE CHEM LETT 2023. [DOI: 10.1016/j.cclet.2023.108206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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6
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Ciocarlan A. From (-)-sclareol to Norlabdane Heterocyclic Hybrid Compounds. CHEMISTRY JOURNAL OF MOLDOVA 2022. [DOI: 10.19261/cjm.2022.958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
This review relates to chemistry of the well-known biologically active natural labdane diterpenoid (-)-sclareol easily available from Clary sage (Salvia sclarea L.). It is mainly used in industry, especially for synthesis of fragrance compounds and natural analogs. The paper covers achievements on the synthesis, structure determination and biological activity of molecular hybrid compounds bearing hydrazide and thiosemicarbazone fragments or diazine, 1,2,4-triazole, carbazole, 1,3-thiazole, 1,3,4-oxadiazole, 1,3,4-thiadiazole units prepared based on it.
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Affiliation(s)
- Alexandru Ciocarlan
- Institute of Chemistry, 3 Academiei str., Chisinau MD 2028, Republic of Moldova
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7
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Donadio G, Chini MG, Parisi V, Mensitieri F, Malafronte N, Bifulco G, Bisio A, De Tommasi N, Bader A. Diterpenoid Constituents of Psiadia punctulata and Evaluation of Their Antimicrobial Activity. JOURNAL OF NATURAL PRODUCTS 2022; 85:1667-1680. [PMID: 35748331 PMCID: PMC9315948 DOI: 10.1021/acs.jnatprod.1c01093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Sixteen diterpenes (1-16), along with 10 previously described compounds, including four flavonoids and six diterpenes, were isolated from the aerial parts of Psiadia punctulata growing in Saudi Arabia. The diterpene structures were elucidated using NMR spectroscopy and mass spectrometry data. Furthermore, a DFT/NMR procedure was used to suggest the relative configuration of several compounds. The labdane-derived skeletons, namely, ent-atisane, ent-beyerene, ent-trachylobane, and ent-kaurene, were identified. The extracts, fractions, and pure compounds were then tested against Staphylococcus aureus, Streptococcus mutans, Treponema denticola, and Lactobacillus plantarum. One diterpenoid, namely, psiadin, showed an additive effect with the antiseptic chlorhexidine, with a fractional inhibitory concentration index of less than 1. Additionally, psiadin showed a prospective inhibition activity for bacterial efflux pumps.
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Affiliation(s)
- Giuliana Donadio
- Department
of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Maria Giovanna Chini
- Department
of Biosciences and Territory, University
of Molise, Contrada Fonte Lappone, I-86090, Pesche, Isernia, Italy
| | - Valentina Parisi
- Department
of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, Salerno, Italy
- Ph.D.
Program in Drug Discovery and Development, Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Francesca Mensitieri
- Department
of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Via Salvador Allende, 84081, Baronissi, Italy
| | - Nicola Malafronte
- Department
of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Giuseppe Bifulco
- Department
of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Angela Bisio
- Department
of Pharmacy, University of Genova, Viale Cembrano 4, 16148, Genova, Italy
| | - Nunziatina De Tommasi
- Department
of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Ammar Bader
- Department
of Pharmacognosy, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
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8
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Kolat SP, Patil H. Biocatalytic transformations of bioactive labdane diterpenoids from Andrographis paniculata (Burm f.) Nees: A review. BIOCATAL BIOTRANSFOR 2021. [DOI: 10.1080/10242422.2021.2002305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Swati P. Kolat
- Bharatiya Jain Sanghatana’s Arts, Science and Commerce College, Savitribai Phule Pune University, Pune, Maharashtra, India
| | - Harshal Patil
- Moreshwar Arts, Science and Commerce College, Bhokardan Dr. Baba Saheb Ambedkar Marathwada University, Aurangabad, Maharashtra, India
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Ma L, Li F, Zhang X, Chen H, Huang Q, Su J, Liu X, Sun T, Fang B, Liu K, Tang D, Wu D, Zhang W, Du L, Li S. Development of MEMS directed evolution strategy for multiplied throughput and convergent evolution of cytochrome P450 enzymes. SCIENCE CHINA-LIFE SCIENCES 2021; 65:550-560. [PMID: 34480693 DOI: 10.1007/s11427-021-1994-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 08/16/2021] [Indexed: 11/26/2022]
Abstract
Directed evolution (DE) inspired by natural evolution (NE) has been achieving tremendous successes in protein/enzyme engineering. However, the conventional "one-protein-for-one-task" DE cannot match the "multi-proteins-for-multi-tasks" NE in terms of screening throughput and efficiency, thus often failing to meet the fast-growing demands for biocatalysts with desired properties. In this study, we design a novel "multi-enzymes-for-multi-substrates" (MEMS) DE model and establish the proof-of-concept by running a NE-mimicking and higher-throughput screening on the basis of "two-P450s-against-seven-substrates" (2P×7S) in one pot. With the multiplied throughput and improved hit rate, we witness a series of convergent evolution events of the two archetypal cytochrome P450 enzymes (P450 BM3 and P450cam) in laboratory. It is anticipated that the new strategy of MEMS DE will find broader application for a larger repertoire of enzymes in the future. Furthermore, structural and substrate docking analysis of the two functionally convergent P450 variants provide important insights into how distinct P450 active-sites can reach a common catalytic goal.
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Affiliation(s)
- Li Ma
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Fengwei Li
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Xingwang Zhang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China
| | - Hui Chen
- Shandong Provincial Key Laboratory of Synthetic Biology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Qian Huang
- College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Jing Su
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China
| | - Xiaohui Liu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Tianjian Sun
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Bo Fang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Kun Liu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Dandan Tang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Dalei Wu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Wei Zhang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Lei Du
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Shengying Li
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China.
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China.
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10
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Ciocarlan A. (+)-Larixol and Larixyl Acetate: Syntheses, Phytochemical Studies and Biological Activity Assessments. CHEMISTRY JOURNAL OF MOLDOVA 2021. [DOI: 10.19261/cjm.2021.836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
(+)-Larixol is a well-known labdane-type diterpenoid widely used in organic synthesis. The present review covers the (+)-larixol based chemical transformations, the results of phytochemical analysis of new (+)-larixol containing species, as well as recent data on biological activity of (+)-larixol and practical applications where it is mentioned.
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11
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Rodríguez-Silverio J, Sánchez-Mendoza ME, Rocha-González HI, Reyes-García JG, Flores-Murrieta FJ, López-Lorenzo Y, Quiñonez-Bastidas GN, Arrieta J. Evaluation of the Antinociceptive, Antiallodynic, Antihyperalgesic and Anti-Inflammatory Effect of Polyalthic Acid. Molecules 2021; 26:2921. [PMID: 34069033 PMCID: PMC8155873 DOI: 10.3390/molecules26102921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 05/11/2021] [Indexed: 11/16/2022] Open
Abstract
Nonsteroidal anti-inflammatory drugs (NSAIDs) are very commonly used, but their adverse effects warrant investigating new therapeutic alternatives. Polyalthic acid, a labdane-type diterpenoid, is known to produce gastroprotection, tracheal smooth muscle relaxation, and antitumoral, antiparasitic and antibacterial activity. This study aimed to evaluate the antinociceptive, antiallodynic, antihyperalgesic and anti-inflammatory effect of polyalthic acid on rats. Moreover, the effectiveness of treating hyperalgesia with a combination of polyalthic acid and naproxen was analyzed, as well as the type of drug-drug interaction involved. Nociception was examined by injecting 1% formalin into the right hind paw and thermal hyperalgesia and inflammation by injecting a 1% carrageenan solution into the left hind paw of rats. Allodynia was assessed on an L5/L6 spinal nerve ligation model. Polyalthic acid generated significant antinociceptive (56-320 mg/kg), antiallodynic (100-562 mg/kg), and antihyperalgesic and anti-inflammatory (10-178 mg/kg) effects. Antinociception mechanisms were explored by pretreating the rats with naltrexone, ODQ and methiothepin, finding the effect blocked by the former two compounds, which indicates the participation of opioid receptors and guanylate cyclase. An isobolographic analysis suggests synergism between polyalthic acid and naproxen in the combined treatment of hyperalgesia.
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Affiliation(s)
- Juan Rodríguez-Silverio
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Colonia Casco de Santo Tomás, Miguel Hidalgo, Ciudad de México 11340, Mexico; (J.R.-S.); (M.E.S.-M.); (H.I.R.-G.); (J.G.R.-G.); (F.J.F.-M.); (Y.L.-L.); (G.N.Q.-B.)
| | - María Elena Sánchez-Mendoza
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Colonia Casco de Santo Tomás, Miguel Hidalgo, Ciudad de México 11340, Mexico; (J.R.-S.); (M.E.S.-M.); (H.I.R.-G.); (J.G.R.-G.); (F.J.F.-M.); (Y.L.-L.); (G.N.Q.-B.)
| | - Héctor Isaac Rocha-González
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Colonia Casco de Santo Tomás, Miguel Hidalgo, Ciudad de México 11340, Mexico; (J.R.-S.); (M.E.S.-M.); (H.I.R.-G.); (J.G.R.-G.); (F.J.F.-M.); (Y.L.-L.); (G.N.Q.-B.)
| | - Juan Gerardo Reyes-García
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Colonia Casco de Santo Tomás, Miguel Hidalgo, Ciudad de México 11340, Mexico; (J.R.-S.); (M.E.S.-M.); (H.I.R.-G.); (J.G.R.-G.); (F.J.F.-M.); (Y.L.-L.); (G.N.Q.-B.)
| | - Francisco Javier Flores-Murrieta
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Colonia Casco de Santo Tomás, Miguel Hidalgo, Ciudad de México 11340, Mexico; (J.R.-S.); (M.E.S.-M.); (H.I.R.-G.); (J.G.R.-G.); (F.J.F.-M.); (Y.L.-L.); (G.N.Q.-B.)
- Unidad de Investigación en Farmacología, Instituto Nacional de Enfermedades Respiratorias Ismael Cosió Villegas, Secretaría de Salud, Ciudad de México 14080, Mexico
| | - Yaraset López-Lorenzo
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Colonia Casco de Santo Tomás, Miguel Hidalgo, Ciudad de México 11340, Mexico; (J.R.-S.); (M.E.S.-M.); (H.I.R.-G.); (J.G.R.-G.); (F.J.F.-M.); (Y.L.-L.); (G.N.Q.-B.)
| | - Geovanna Nallely Quiñonez-Bastidas
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Colonia Casco de Santo Tomás, Miguel Hidalgo, Ciudad de México 11340, Mexico; (J.R.-S.); (M.E.S.-M.); (H.I.R.-G.); (J.G.R.-G.); (F.J.F.-M.); (Y.L.-L.); (G.N.Q.-B.)
| | - Jesús Arrieta
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Colonia Casco de Santo Tomás, Miguel Hidalgo, Ciudad de México 11340, Mexico; (J.R.-S.); (M.E.S.-M.); (H.I.R.-G.); (J.G.R.-G.); (F.J.F.-M.); (Y.L.-L.); (G.N.Q.-B.)
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12
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Morarescu O, Traistari M, Barba A, Duca G, Ungur N, Kulcițki V. One-step Selective Synthesis of 13-epi-manoyl Oxide. CHEMISTRY JOURNAL OF MOLDOVA 2021. [DOI: 10.19261/cjm.2021.820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The selective one-step synthesis of 13-epi-manoyl oxide is reported based on a low-temperature superacidic cyclization of sclareol. The reaction conditions have been finely tuned in order to achieve a 9:1 ratio between epimeric oxides in favor of the desired 13-epi-oxide.
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13
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Chai XN, Ludwig FA, Müglitz A, Schaefer M, Yin HY, Brust P, Regenthal R, Krügel U. Validation of an LC-MS/MS Method to Quantify the New TRPC6 Inhibitor SH045 (Larixyl N-methylcarbamate) and Its Application in an Exploratory Pharmacokinetic Study in Mice. Pharmaceuticals (Basel) 2021; 14:ph14030259. [PMID: 33805686 PMCID: PMC8000919 DOI: 10.3390/ph14030259] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/09/2021] [Accepted: 03/11/2021] [Indexed: 02/06/2023] Open
Abstract
TRPC6 (transient receptor potential cation channels; canonical subfamily C, member 6) is widespread localized in mammalian tissues like kidney and lung and associated with progressive proteinuria and pathophysiological pulmonary alterations, e.g., reperfusion edema or lung fibrosis. However, the understanding of TRPC6 channelopathies is still at the beginning stages. Recently, by chemical diversification of (+)-larixol originating from Larix decidua resin traditionally used for inhalation, its methylcarbamate congener, named SH045, was obtained and identified in functional assays as a highly potent, subtype-selective inhibitor of TRPC6. To pave the way for use of SH045 in animal disease models, this study aimed at developing a capable bioanalytical method and to provide exploratory pharmacokinetic data for this promising derivative. According to international guidelines, a robust and selective LC-MS/MS method based on MRM detection in positive ion mode was established and validated for quantification of SH045 in mice plasma, whereby linearity and accuracy were demonstrated for the range of 2–1600 ng/mL. Applying this method, the plasma concentration time course of SH045 following single intraperitoneal administration (20 mg/kg body weight) revealed a short half-life of 1.3 h. However, the pharmacological profile of SH045 is promising, as five hours after administration, plasma levels still remained sufficiently higher than published low nanomolar IC50 values. Summarizing, the LC-MS/MS method and exploratory pharmacokinetic data provide essential prerequisites for experimental pharmacological TRPC6 modulation and translational treatment of TRPC6 channelopathies.
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Affiliation(s)
- Xiao-Ning Chai
- Rudolf Boehm Institute for Pharmacology and Toxicology, Leipzig University, 04107 Leipzig, Germany; (X.-N.C.); (A.M.); (M.S.)
- Acupuncture and Tuina School, Chengdu University of Traditional, Chinese Medicine, Chengdu 610075, China;
| | - Friedrich-Alexander Ludwig
- Department of Neuroradiopharmaceuticals, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, 04318 Leipzig, Germany; (F.-A.L.); (P.B.)
| | - Anne Müglitz
- Rudolf Boehm Institute for Pharmacology and Toxicology, Leipzig University, 04107 Leipzig, Germany; (X.-N.C.); (A.M.); (M.S.)
| | - Michael Schaefer
- Rudolf Boehm Institute for Pharmacology and Toxicology, Leipzig University, 04107 Leipzig, Germany; (X.-N.C.); (A.M.); (M.S.)
| | - Hai-Yan Yin
- Acupuncture and Tuina School, Chengdu University of Traditional, Chinese Medicine, Chengdu 610075, China;
| | - Peter Brust
- Department of Neuroradiopharmaceuticals, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, 04318 Leipzig, Germany; (F.-A.L.); (P.B.)
| | - Ralf Regenthal
- Clinical Pharmacology, Rudolf Boehm Institute for Pharmacology and Toxicology, Leipzig University, 04107 Leipzig, Germany;
| | - Ute Krügel
- Rudolf Boehm Institute for Pharmacology and Toxicology, Leipzig University, 04107 Leipzig, Germany; (X.-N.C.); (A.M.); (M.S.)
- Correspondence:
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14
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Grant PS, Brimble MA. seco-Labdanes: A Study of Terpenoid Structural Diversity Resulting from Biosynthetic C-C Bond Cleavage. Chemistry 2021; 27:6367-6389. [PMID: 33289161 DOI: 10.1002/chem.202004574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Indexed: 11/08/2022]
Abstract
The cleavage of a C-C bond is a complexity generating process, which complements oxidation and cyclisation events in the biosynthesis of terpenoids. This process leads to increased structural diversity in a cluster of related secondary metabolites by modification of the parent carbocyclic core. In this review, we highlight the diversifying effect of C-C bond cleavage by examining the literature related to seco-labdanes-a class of diterpenoids arising from such C-C bond cleavage events.
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Affiliation(s)
- Phillip S Grant
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand
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15
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Zhao B, Zhang Z, Ge Y, Li P, Miao T, Wang L. Photochemical synthesis of 3-hydroxyphenanthro[9,10-c]furan-1(3H)-ones from α-keto acids and alkynes. Org Chem Front 2021. [DOI: 10.1039/d0qo01487g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel and efficient method for the synthesis of 3-hydroxyphenanthro[9,10-c]furan-1(3H)-ones has been achieved from α-keto acids and alkynes through photo-initiated transformation, providing a range of products in good to excellent yields.
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Affiliation(s)
- Beibei Zhao
- Department of Chemistry; Key Laboratory of Green and Precise Synthetic Chemistry
- Ministry of Education
- Huaibei Normal University
- Huaibei
- P. R. China
| | - Zhen Zhang
- Department of Chemistry; Key Laboratory of Green and Precise Synthetic Chemistry
- Ministry of Education
- Huaibei Normal University
- Huaibei
- P. R. China
| | - Yu Ge
- Department of Chemistry; Key Laboratory of Green and Precise Synthetic Chemistry
- Ministry of Education
- Huaibei Normal University
- Huaibei
- P. R. China
| | - Pinhua Li
- Department of Chemistry; Key Laboratory of Green and Precise Synthetic Chemistry
- Ministry of Education
- Huaibei Normal University
- Huaibei
- P. R. China
| | - Tao Miao
- Department of Chemistry; Key Laboratory of Green and Precise Synthetic Chemistry
- Ministry of Education
- Huaibei Normal University
- Huaibei
- P. R. China
| | - Lei Wang
- Department of Chemistry; Key Laboratory of Green and Precise Synthetic Chemistry
- Ministry of Education
- Huaibei Normal University
- Huaibei
- P. R. China
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16
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De S, Mahal E, Haque MA, Jana CK, Koley D. Computational Investigation of Multifaceted Cationic Rearrangement and Stereo- and Regioselectivity in the Formation of Dysideanone's Analogues. J Org Chem 2021; 86:1133-1140. [PMID: 33331777 DOI: 10.1021/acs.joc.0c02609] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Mechanistic studies of regiodivergent arylations of cycloalkanols to furnish enantioenriched dysideanone's analogues are performed by employing density functional theory (DFT) calculations (B3LYP-D3(SMD)/6-311++G**//B3LYP-D3/6-31+G** level of theory). On the basis of our calculations, remote γ'-C-H arylation is preferred for unsubstituted carbinol 1, an outcome from combined factors like carbocationic stability, less steric hindrance during C-C coupling, and facile dearomatization. Meanwhile, in the presence of dimethyl substituent 1Me, regioselective γ-arylation is favored by 3.4 kcal/mol, and both findings are in agreement with the reported experimental observations. Most importantly, we concur that the barrier associated with the formation of carbocation 6 and its substituted analogues correlates with the C-H arylation outcomes. Furthermore, the β-arylation route remains unlikely for all the reaction pathways explored in this study.
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Affiliation(s)
- Sriman De
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741 246, India
| | - Eti Mahal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741 246, India
| | - Md Ashraful Haque
- Department of Chemistry, Indian Institute of Technology (IIT) Guwahati, Guwahati 781 039, India
| | - Chandan K Jana
- Department of Chemistry, Indian Institute of Technology (IIT) Guwahati, Guwahati 781 039, India
| | - Debasis Koley
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741 246, India
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17
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Ncube EN, Steenkamp L, Dubery IA. Ambrafuran (Ambrox TM) Synthesis from Natural Plant Product Precursors. Molecules 2020; 25:molecules25173851. [PMID: 32854176 PMCID: PMC7504449 DOI: 10.3390/molecules25173851] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/11/2020] [Accepted: 08/17/2020] [Indexed: 11/23/2022] Open
Abstract
Ambergris, an excretion product of sperm whales, has been a valued agent in the formulation of perfumes. The composition of ambergris consists of two major components: 40–46% cholestanol type steroids and approximately 25–45% of a triterpenoid known as ambrein. Ambergris undergoes oxidative decomposition in the environment to result in odorous compounds, such as ambraoxide, methylambraoxide, and ambracetal. Its oxidized form, ambrafuran (IUPAC name: 3a,6,6,9a-tetramethyl-2,4,5,5a,7,8,9,9b-octahydro-1H-benzo[e][1]benzofuran), is a terpene furan with a pleasant odor and unique olfactive and fixative properties. The current state of the fragrance industry uses ambrafuran materials entirely from synthetic or semisynthetic sources. However, natural compounds with the potential to be converted to ambergris-like odorants have been extracted from several different types of plants. Here we review plant terpenoids suitable as starting materials for the semisyntheses of ambrafuran or intermediates, such as ambradiol, that can be used in biocatalytic transformations to yield ambrafuran.
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Affiliation(s)
- Efficient N. Ncube
- Research Centre for Plant Metabolomics, Department of Biochemistry, University of Johannesburg, P.O. Box 524, Auckland Park 2006, South Africa;
| | - Lucia Steenkamp
- Chemicals Cluster, Council for Scientific and Industrial Research (CSIR), P.O. Box 395, Pretoria 0001, South Africa;
| | - Ian A. Dubery
- Research Centre for Plant Metabolomics, Department of Biochemistry, University of Johannesburg, P.O. Box 524, Auckland Park 2006, South Africa;
- Correspondence: ; Tel.: +27-11-559-2401
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18
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Pitsinos EN, Mavridis I, Tzouma E, Vidali VP. Enantioselective Synthesis of Cassane-Type Furanoditerpenoids: Total Synthesis of Sucutiniranes C and D. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000724] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Emmanuel N. Pitsinos
- Institute of Nanoscience and Nanotechnology; National Centre of Scientific Research “Demokritos”; P.O. Box 60037 15310 Agia Paraskevi Attikis Greece
| | - Ioannis Mavridis
- Institute of Nanoscience and Nanotechnology; National Centre of Scientific Research “Demokritos”; P.O. Box 60037 15310 Agia Paraskevi Attikis Greece
| | - Eirini Tzouma
- Institute of Nanoscience and Nanotechnology; National Centre of Scientific Research “Demokritos”; P.O. Box 60037 15310 Agia Paraskevi Attikis Greece
| | - Veroniki P. Vidali
- Institute of Nanoscience and Nanotechnology; National Centre of Scientific Research “Demokritos”; P.O. Box 60037 15310 Agia Paraskevi Attikis Greece
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19
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Veena KS, Taniya MS, Ravindran J, Thangarasu AK, Priya S, Lankalapalli RS. Semi-synthetic diversification of coronarin D, a labdane diterpene, under Ugi reaction conditions. Nat Prod Res 2020; 36:334-340. [PMID: 32586133 DOI: 10.1080/14786419.2020.1782406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The prevalence of 5-hydroxydihydrofuran-2(3H)-one moiety in natural products is exploited for the first time using coronarin D, a labdane diterpene, to afford Ugi reaction product 1a and interrupted Ugi product 2a. The potential of the Ugi reaction was further extended to l-phenylalanine, 2-aminopyridine, and d-glucosamine, which afforded Ugi reaction products 3a-f, 4, and 5a-d, respectively. Cytotoxicity studies in RAW cells reveal that compounds 3e and 5b were non-toxic up to 50 µM, and these compounds were able to reduce the LPS stimulated NO production in RAW cells in par with the standard anti-inflammatory drug dexamethasone.
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Affiliation(s)
- Kollery S Veena
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Murikkinthara S Taniya
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India.,Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, Kerala, India
| | - Jaice Ravindran
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Arun Kumar Thangarasu
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Sulochana Priya
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India.,Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, Kerala, India
| | - Ravi Shankar Lankalapalli
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
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20
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21
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Fungal biocatalysts for labdane diterpene hydroxylation. Bioprocess Biosyst Eng 2020; 43:1051-1059. [PMID: 32020446 DOI: 10.1007/s00449-020-02303-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 01/27/2020] [Indexed: 01/23/2023]
Abstract
Labdane diterpenes and their derivatives have shown remarkable biological activities and are useful as chiral building blocks for the synthesis of a variety of bioactive compounds. There is great interest in developing biocatalyst technology to achieve regio- and stereoselective hydroxylation of unactivated C-H bonds in complex natural products, since the functionalization of unactivated C-H bonds generally requires hard reaction conditions and highly reactive oxidizing agents, which are limited regarding the control of regio- and stereoselectivity. Filamentous fungi are efficient biocatalysts capable of catalyzing a wide variety of hydroxylation reactions, and the use of whole cell biocatalysts provides advantages regarding cofactor regeneration and is much less expensive. Therefore, the goal of this study was to select biocatalysts to develop biotransformation processes that can be scalable under mild reaction conditions for hydroxylation of a labdane diterpene, 3β-acetoxy-copalic acid, which contains the trans-decalin moiety and a side chain dienic system appropriate for the preparation of a variety of compounds. Biotransformation processes were carried out and five filamentous fungi were selected as capable of producing hydroxylated diterpenes at positions C-3, C-6, C-7 and C-18 of the trans-decalin moiety and C-13 of the side chain dienic system. Hydroxylation reactions occurred with regio- and stereoselectivity by using some fungi that produced only the 6α, 7α and 13α-hydroxyl derivatives. The chemical structures of the hydroxylated diterpenes were determined from spectrometric and spectroscopic data, and the relative stereochemistry of stereogenic centers was established from coupling constants, by NOE-diff experiments and/or by computational calculations.
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22
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Li J, Li F, King-Smith E, Renata H. Merging chemoenzymatic and radical-based retrosynthetic logic for rapid and modular synthesis of oxidized meroterpenoids. Nat Chem 2020; 12:173-179. [PMID: 31959962 PMCID: PMC7250629 DOI: 10.1038/s41557-019-0407-6] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 12/06/2019] [Indexed: 11/09/2022]
Abstract
Meroterpenoids are natural products of hybrid biosynthetic origins-derived from both terpenoid and polyketide pathways-with a wealth of biological activities. Given their therapeutic potential, a general strategy to access these natural products in a concise and divergent fashion is highly desirable. Here, we report a modular synthesis of a suite of oxidized meroterpenoids using a hybrid synthetic strategy that is designed to harness the power of both biocatalytic and radical-based retrosynthetic logic. This strategy enables direct introduction of key hydroxyl groups and rapid construction of key bonds and stereocentres, facilitating the development of a concise route (7-12 steps from commercial materials) to eight oxidized meroterpenoids from two common molecular scaffolds. This work lays the foundation for rapid access to a wide range of oxidized meroterpenoids through the use of similar hybrid strategy that combines two synthetic approaches.
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Affiliation(s)
- Jian Li
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL, USA
| | - Fuzhuo Li
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL, USA
| | - Emma King-Smith
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL, USA
| | - Hans Renata
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL, USA.
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23
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Pontes de Sousa I, Ferreira AG, Miller Crotti AE, Alves Dos Santos R, Kiermaier J, Kraus B, Heilmann J, Jacometti Cardoso Furtado NA. New antifungal ent-labdane diterpenes against Candida glabrata produced by microbial transformation of ent-polyalthic acid. Bioorg Chem 2020; 95:103560. [PMID: 31918399 DOI: 10.1016/j.bioorg.2019.103560] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 12/06/2019] [Accepted: 12/27/2019] [Indexed: 12/18/2022]
Abstract
Candida glabrata, the most common non-albicans Candida species and one of the primary causes of candidemia, exhibits decreased susceptibility to azoles and more recently to echinocandins. Polyalthic acid 1, a furan diterpene, has been shown promising biological potential and in this study ent-polyalthic acid derivatives with antifungal activity against Candida glabrata were produced by microbial transformation. Incubation of 1 with Aspergillus brasiliensis afforded two known (compounds 5 and 10) and eight new derivatives (compounds 2-4, 6-9 and 11). The most common reaction was hydroxylation, but isomerization of the double bond and acetylation were also detected. None of the tested compounds showed cytotoxicity against HeLa, MCF-7 and MCF-10A cell lines showing IC50 values ranging from 62.6 µM to > 500 µM. Compounds 1, 5, 6, 8 and 11 showed fungistatic effects (ranging from 34.1 µM to 39.5 µM) on C. glabrata at lower concentrations than fluconazole (163.2 µM). Compounds 1, 6 and 8 were more potent fungicides (ranging from 79.0 to 143.6 µM) than fluconazole, which showed fungicidal effect at concentrations higher than 163.2 µM. These results suggest that ent-polyalthic acid and some of its derivatives could be used as lead compounds to develop new antifungal agents.
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Affiliation(s)
- Ingrid Pontes de Sousa
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil.
| | - Antônio Gilberto Ferreira
- Laboratory of Nuclear Magnetic Resonance, Chemistry Department, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Antônio Eduardo Miller Crotti
- Department of Chemistry, School of Philosophy, Sciences and Languages of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
| | | | - Josef Kiermaier
- Department of Pharmaceutical Biology, Faculty of Chemistry and Pharmacy, University of Regensburg, Regensburg, Germany.
| | - Birgit Kraus
- Department of Pharmaceutical Biology, Faculty of Chemistry and Pharmacy, University of Regensburg, Regensburg, Germany.
| | - Jörg Heilmann
- Department of Pharmaceutical Biology, Faculty of Chemistry and Pharmacy, University of Regensburg, Regensburg, Germany.
| | - Niege Araçari Jacometti Cardoso Furtado
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil.
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24
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Huang T, Ying SH, Li JY, Chen HW, Zang Y, Wang WX, Li J, Xiong J, Hu JF. Phytochemical and biological studies on rare and endangered plants endemic to China. Part XV. Structurally diverse diterpenoids and sesquiterpenoids from the vulnerable conifer Pseudotsuga sinensis. PHYTOCHEMISTRY 2020; 169:112184. [PMID: 31678787 DOI: 10.1016/j.phytochem.2019.112184] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 10/14/2019] [Accepted: 10/19/2019] [Indexed: 06/10/2023]
Abstract
An extensive phytochemical investigation on the chemical constituents from the needles and twigs of the vulnerable conifer Pseudotsuga sinensis yielded 19 diterpenoids and 21 sesquiterpenoids with various carbocyclic skeletons. Among them, 13 (named pseudosinins A-M, resp.) were undescribed compounds. Their structures with absolute configurations were characterized by a combination of spectroscopic methods, calculated and experimental electronic circular dichroism (ECD) data, quantum chemical calculations of the chemical shifts, and single crystal X-ray diffraction analyses. In particular, an array of labdane-derived norditerpenoids with C19-, C18-, and C16-skeletons, and related drimane-type sesquitepenoids with C15- and C13-skeletons were found in the title plant. The possible biogenetic relationships of these degraded terpenoids were briefly discussed. Among the isolates, pseudosinin D, cis-communic acid, and 4β,15-dihydroxy-19-norabieta-8,11,13-trien-7-one showed moderate inhibitory activities against the enzyme ATP-citrate lyase (ACL), a potential drug target for the treatment of hyperlipidemia and hypercholesterolemia.
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Affiliation(s)
- Ting Huang
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Sheng-Hui Ying
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Jing-Ya Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, PR China
| | - Hao-Wei Chen
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Yi Zang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, PR China
| | - Wen-Xuan Wang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, Hubei, 430074, PR China
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, PR China
| | - Juan Xiong
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai, 201203, PR China.
| | - Jin-Feng Hu
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai, 201203, PR China.
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25
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Blaja S. Synthesis of New Di- and Trinorlabdane Compounds with 2-amino-1,3-thiazole Units. CHEMISTRY JOURNAL OF MOLDOVA 2019. [DOI: 10.19261/cjm.2019.609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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26
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Su JC, Cheng W, Song JG, Zhong YL, Huang XJ, Jiang RW, Li YL, Li MM, Ye WC, Wang Y. Macrocyclic Diterpenoids from Euphorbia helioscopia and Their Potential Anti-inflammatory Activity. JOURNAL OF NATURAL PRODUCTS 2019; 82:2818-2827. [PMID: 31550154 DOI: 10.1021/acs.jnatprod.9b00519] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Guided by 1H NMR spectroscopic experiments using the aromatic protons as probes, 11 macrocyclic diterpenes (1-11) were isolated from the aerial parts of Euphorbia helioscopia. Their full three-dimensional structures, including absolute configurations, were established unambiguously by spectroscopic analysis and single-crystal X-ray crystallographic experiments. Among the isolated compounds, compound 1 is the third member thus far of a rare class of Euphorbia diterpenes featuring an unusual 5/10 fused ring system, and 2-4 are new jatrophane diterpenes. Based on the NMR data of the jatrophane diterpenes obtained in this study as well as those with crystallographic structures reported in the literature, the correlations of the chemical shifts of the relevant carbons and the configurations of C-2, C-13, and C-14 of their flexible macrocyclic ring were considered. Moreover, the anti-inflammatory activities of 1-11 were investigated by monitoring their inhibitory effects on nitric oxide production in lipopolysaccharide-stimulated RAW 264.7 cells. Compound 1 showed an IC50 of 7.4 ± 0.6 μM, which might be related to the regulation of the NF-κB signaling pathway by suppressing the translocation of the p65 subunit and the consequent reduction of IL-6 and TNF-α secretions.
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27
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Gao S, Wang D, Chai H, Xu J, Li T, Niu Y, Chen X, Qiu F, Li Y, Li H, Chen L. Unusual ent-Labdane Diterpenoid Dimers and their Selective Activation of TRPV Channels. J Org Chem 2019; 84:13595-13603. [DOI: 10.1021/acs.joc.9b01864] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Suyu Gao
- Wuya College of Innovation, School of Pharmaceutical Engineering, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Dun Wang
- Wuya College of Innovation, School of Pharmaceutical Engineering, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Hao Chai
- State Key Laboratory of Drug Research and Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Jiamin Xu
- Wuya College of Innovation, School of Pharmaceutical Engineering, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Tianyu Li
- State Key Laboratory of Drug Research and Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Yingxue Niu
- Wuya College of Innovation, School of Pharmaceutical Engineering, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xinxin Chen
- Wuya College of Innovation, School of Pharmaceutical Engineering, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Feng Qiu
- School of Chinese Materia Medica and Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
| | - Yang Li
- State Key Laboratory of Drug Research and Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Hua Li
- Wuya College of Innovation, School of Pharmaceutical Engineering, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Lixia Chen
- Wuya College of Innovation, School of Pharmaceutical Engineering, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
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28
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Kuan KK, Markwell-Heys AW, Cruickshank MC, Tran DP, Adlington RM, Baldwin JE, George JH. Biomimetic synthetic studies on meroterpenoids from the marine sponge Aka coralliphaga: Divergent total syntheses of siphonodictyal B, liphagal and corallidictyals A–D. Bioorg Med Chem 2019; 27:2449-2465. [DOI: 10.1016/j.bmc.2019.02.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 02/18/2019] [Indexed: 10/27/2022]
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Monteiro AF, Righetto GM, Simões LV, Almeida LCD, Costa-Lotufo LV, Camargo ILBDC, Castro-Gamboa I. Oxidative functionalization of a halimane diterpenoid achieved by fungal transformation. Bioorg Chem 2019; 86:550-556. [PMID: 30782573 DOI: 10.1016/j.bioorg.2019.02.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/07/2019] [Accepted: 02/08/2019] [Indexed: 12/29/2022]
Abstract
Regio and stereoselective activation of sp3 CH bonds remain one of the major advantages of biocatalysis over traditional chemocatalytic methods. Herein, we describe the oxy-functionalization of halimane diterpenoid 1 by whole cells of three filamentous fungi, aiming to obtain derivatives with desirable biological properties. After incubating 1 with Fusarium oxysporum, Myrothecium verrucaria, and Rhinocladiella similis at different concentrations and incubation times, four known (3, 5, 6, and 7) and three new (2, 4, and 8) halimane derivatives were obtained and characterized. F. oxysporum catalyzed the hydroxylation of positions C-2 (2) and C-7 (4), while R. similis simultaneously mediated the 2-oxo-functionalization and the hydration of 13,14-(CC)double bond belonging to an α,β-unsaturated carbonyl system (8). Compounds 1-7 were non-cytotoxic against HCT-116 and MCF-7 cancer cell lines at tested concentrations. However, substrate 1 displayed moderate reduction ability against biofilm produced by Staphylococcus epidermidis ATCC35984 (84% at 1.6 mM), and this effect was retained to some extent by derivatives 4 and 7. These results emphasize the prominent potential of filamentous fungi associated with the microbiota of medicinal plants as versatile catalysts for singularly useful reactions through their complex enzymatic machinery, as well as the high susceptibility of halimane-diterpenoid substrates.
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Affiliation(s)
- Afif Felix Monteiro
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Universidade Estadual Paulista (UNESP), Instituto de Química, Departamento de Química Orgância, Francisco Degni, 55, 14800-900, Araraquara, SP, Brazil.
| | - Gabriela Marinho Righetto
- São Carlos Institute of Physics, University of São Paulo, PO Box 369, 135560-970, São Carlos, SP, Brazil
| | - Laura Vilar Simões
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Universidade Estadual Paulista (UNESP), Instituto de Química, Departamento de Química Orgância, Francisco Degni, 55, 14800-900, Araraquara, SP, Brazil
| | - Larissa Costa de Almeida
- Universidade de São Paulo (USP), Instituto de Ciências Biomédicas, Av. Lineu Prestes, 1524, 05508-900, São Paulo, SP, Brazil
| | - Letícia Veras Costa-Lotufo
- Universidade de São Paulo (USP), Instituto de Ciências Biomédicas, Av. Lineu Prestes, 1524, 05508-900, São Paulo, SP, Brazil
| | | | - Ian Castro-Gamboa
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Universidade Estadual Paulista (UNESP), Instituto de Química, Departamento de Química Orgância, Francisco Degni, 55, 14800-900, Araraquara, SP, Brazil.
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Díaz K, Espinoza J, Espinoza L, González C, Madrid A. Labdanes: antifungal compounds isolates from the resinous exudate of Madia sativa against Phytophthora cinnamomi Rands. Nat Prod Res 2018; 34:2310-2314. [PMID: 30585076 DOI: 10.1080/14786419.2018.1531402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In this study, resinous exudate from Madia sativa was analyzed by GC-MS. The major bioactive compounds 13,14,15-trihydroxylabd-7-ene (14) and 3,14,15-trihydroxylabd-8-ene (15) were isolated and their structures were determined by NMR. The antifungal activity of the resinous exudate and the labdanes compounds was evaluated using the inhibitory effects on the mycelial growth of plant pathogen Phytophthora cinnamomi causing root rot of various crops. The evaluation of the resinous exudate showed no inhibition over 50% at 75 mg/L, while compound 15 had the stronger effect on the myceliar growth of P. cinnamomi, with a 94.6% inhibition at 175 mg/L. The same way, the mixture of both compounds in equal parts did not show a synergistic effect but showed similar percentages of mycelial growth inhibition from 25 mg/L with respect to the compounds separately.
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Affiliation(s)
- Katy Díaz
- Departamento de Química, Universidad Técnica Federico Santa María, Valparaíso, Chile
| | | | - Luis Espinoza
- Departamento de Química, Universidad Técnica Federico Santa María, Valparaíso, Chile
| | - César González
- Departamento de Química, Universidad Técnica Federico Santa María, Valparaíso, Chile
| | - Alejandro Madrid
- Departamento de Química, Facultad de Ciencias Naturales y Exactas, Universidad de Playa Ancha, Playa Ancha, Valparaíso, Chile
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Zentar H, Arias F, Haidour A, Alvarez-Manzaneda R, Chahboun R, Alvarez-Manzaneda E. Protecting-Group-Free Synthesis of Cassane-Type Furan Diterpenes via a Decarboxylative Dienone–Phenol Rearrangement. Org Lett 2018; 20:7007-7010. [DOI: 10.1021/acs.orglett.8b02867] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Houda Zentar
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
| | - Fabio Arias
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
| | - Ali Haidour
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
| | - Ramón Alvarez-Manzaneda
- Àrea de Química Orgánica, Departamento de Química y Física, Universidad de Almería, 04120 Almería, Spain
| | - Rachid Chahboun
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
| | - Enrique Alvarez-Manzaneda
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
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Zhang S, Wang X, Hao J, Li D, Csuk R, Li S. Expediently Scalable Synthesis and Antifungal Exploration of (+)-Yahazunol and Related Meroterpenoids. JOURNAL OF NATURAL PRODUCTS 2018; 81:2010-2017. [PMID: 30207477 DOI: 10.1021/acs.jnatprod.8b00310] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The efficient synthesis and antifungal exploration of (+)-yahazunol and related natural products are described. Central to this strategy is the Barton decarboxylative coupling, comprising a one-pot radical decarboxylation and quinone addition cascade. The scalable synthesis of (+)-yahazunol was accomplished in five longest linear sequences (LLS) starting from commercially available and inexpensive (-)-sclareol. The divergent translational potential of (+)-yahazunol was demonstrated by the expedient preparation of (-)-zonarone, (-)-isozonarone, (-)-zonarol, (-)-isozonarol, (+)-chromazonarol, and (+)-yahazunone. This approach also enables the formal synthesis of puupehenol, puupehedione, and hongoquercin A. Antifungal evaluation was performed, and this represents the first biological profiles for (+)-yahazunone, (+)-8- O-acetylyahazunone, and (+)-8- O-acetylyahazunol. (+)-Chromazonarol and (+)-yahazunone are promising candidates against Sclerotinia scleotiorum, with EC50 values of 24.1 and 28.7 μM, respectively, demonstrating advantages over the original model (DM) and synthesized heterocyclic mimic (3a) of meroterpenoids. This will favor the establishment of a chemical repertoire in the management of different plant diseases.
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Affiliation(s)
- Shasha Zhang
- Department of Pesticide Science, College of Plant Protection , Nanjing Agricultural University , Weigang 1 , Xuanwu District, Nanjing 210095 , People's Republic of China
| | - Xia Wang
- Department of Pesticide Science, College of Plant Protection , Nanjing Agricultural University , Weigang 1 , Xuanwu District, Nanjing 210095 , People's Republic of China
| | - Jin Hao
- Department of Pesticide Science, College of Plant Protection , Nanjing Agricultural University , Weigang 1 , Xuanwu District, Nanjing 210095 , People's Republic of China
| | - Dangdang Li
- R & D Center , Jiangsu New Energy Crop Protection Co., Ltd. , 5 Xinmofan Road , Nanjing 210009 , People's Republic of China
| | - René Csuk
- Organic Chemistry , Martin-Luther-University Halle-Wittenberg , Kurt-Mothes-Straße 2 , D-06120 Halle (Saale) , Germany
| | - Shengkun Li
- Department of Pesticide Science, College of Plant Protection , Nanjing Agricultural University , Weigang 1 , Xuanwu District, Nanjing 210095 , People's Republic of China
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de Sousa IP, Sousa Teixeira MV, Jacometti Cardoso Furtado NA. An Overview of Biotransformation and Toxicity of Diterpenes. Molecules 2018; 23:E1387. [PMID: 29890639 PMCID: PMC6100218 DOI: 10.3390/molecules23061387] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 06/01/2018] [Accepted: 06/05/2018] [Indexed: 12/20/2022] Open
Abstract
Diterpenes have been identified as active compounds in several medicinal plants showing remarkable biological activities, and some isolated diterpenes are produced at commercial scale to be used as medicines, food additives, in the synthesis of fragrances, or in agriculture. There is great interest in developing methods to obtain derivatives of these compounds, and biotransformation processes are interesting tools for the structural modification of natural products with complex chemical structures. Biotransformation processes also have a crucial role in drug development and/or optimization. The understanding of the metabolic pathways for both phase I and II biotransformation of new drug candidates is mandatory for toxicity and efficacy evaluation and part of preclinical studies. This review presents an overview of biotransformation processes of diterpenes carried out by microorganisms, plant cell cultures, animal and human liver microsomes, and rats, chickens, and swine in vivo and highlights the main enzymatic reactions involved in these processes and the role of diterpenes that may be effectively exploited by other fields.
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Affiliation(s)
- Ingrid P de Sousa
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Preto, São Paulo 14040903, Brazil.
| | - Maria V Sousa Teixeira
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Preto, São Paulo 14040903, Brazil.
| | - Niege A Jacometti Cardoso Furtado
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Preto, São Paulo 14040903, Brazil.
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Viveiros R, Rebocho S, Casimiro T. Green Strategies for Molecularly Imprinted Polymer Development. Polymers (Basel) 2018; 10:E306. [PMID: 30966341 PMCID: PMC6415187 DOI: 10.3390/polym10030306] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 03/01/2018] [Accepted: 03/06/2018] [Indexed: 11/24/2022] Open
Abstract
Molecular imprinting is a powerful technology to create artificial receptors within polymeric matrices. Although it was reported for the first time by Polyakov, eighty-four years ago, it remains, nowadays, a very challenging research area. Molecularly imprinted polymers (MIPs) have been successfully used in several applications where selective binding is a requirement, such as immunoassays, affinity separation, sensors, and catalysis. Conventional methods used on MIP production still use large amounts of organic solvents which, allied with stricter legislation on the use and release of chemicals to the environment and the presence of impurities on final materials, will boost, in our opinion, the use of new cleaner synthetic strategies, in particular, with the application of the principles of green chemistry and engineering. Supercritical carbon dioxide, microwave, ionic liquids, and ultrasound technology are some of the green strategies which have already been applied in MIP production. These strategies can improve MIP properties, such as controlled morphology, homogeneity of the binding sites, and the absence of organic solvents. This review intends to give examples reported in literature on green approaches to MIP development, from nano- to micron-scale applications.
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Affiliation(s)
- Raquel Viveiros
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.
| | - Sílvia Rebocho
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.
| | - Teresa Casimiro
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.
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35
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Li FZ, Li S, Zhang PP, Huang ZH, Zhang WB, Gong J, Yang Z. A chiral pool approach for asymmetric syntheses of (-)-antrocin, (+)-asperolide C, and (-)-trans-ozic acid. Chem Commun (Camb) 2018; 52:12426-12429. [PMID: 27711326 DOI: 10.1039/c6cc06794h] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ozonolysis of aromatic abietane (+)-carnosic acid (4) is used to create an important intermediate in an enantiomerically pure form, resulting in a simple, concise, readily scalable, and asymmetric synthesis of (-)-antrocin (1). This strategy not only provides an efficient approach to (-)-antrocin (1) synthesis but can also be readily adopted for the syntheses of optically pure (+)-asperolide C (2) and (-)-trans-ozic acid (3) from the naturally abundant aromatic abietanes (+)-podocarpic acid (5) and (+)-dehydroabietic acid (6). The strategy presented here is an example of the use of naturally occurring aromatic abietanes as a chiral pool and offers an account of the asymmetric synthesis of terpenoids.
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Affiliation(s)
- Fu-Zhuo Li
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Shuang Li
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Peng-Peng Zhang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Zhi-Hui Huang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Wei-Bin Zhang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Jianxian Gong
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Zhen Yang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China.
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36
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Monteiro AF, Seidl C, Severino VGP, Cardoso CL, Castro-Gamboa I. Biotransformation of labdane and halimane diterpenoids by two filamentous fungi strains. ROYAL SOCIETY OPEN SCIENCE 2017. [PMID: 29291077 DOI: 10.5061/dryad.fb7r5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Biotransformation of natural products by filamentous fungi is a powerful and effective approach to achieve derivatives with valuable new chemical and biological properties. Although diterpenoid substrates usually exhibit good susceptibility towards fungi enzymes, there have been no studies concerning the microbiological transformation of halimane-type diterpenoids up to now. In this work, we investigated the capability of Fusarium oxysporum (a fungus isolated from the rhizosphere of Senna spectabilis) and Myrothecium verrucaria (an endophyte) to transform halimane (1) and labdane (2) acids isolated from Hymenaea stigonocarpa (Fabaceae). Feeding experiments resulted in the production of six derivatives, including hydroxy, oxo, formyl and carboxy analogues. Incubation of 1 with F. oxysporum afforded 2-oxo-derivative (3), while bioconversion with M. verrucaria provided 18,19-dihydroxy (4), 18-formyl (5) and 18-carboxy (6) bioproducts. Transformation of substrate 2 mediated by F. oxysporum produced a 7α-hydroxy (7) derivative, while M. verrucaria yielded 7α- (7) and 3β-hydroxy (8) metabolites. Unlike F. oxysporum, which showed a preference to transform ring B, M. verrucaria exhibited the ability to hydroxylate both rings A and B from substrate 2. Additionally, compounds 1-8 were evaluated for inhibitory activity against Hr-AChE and Hu-BChE enzymes through ICER-IT-MS/MS assay.
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Affiliation(s)
- Afif F Monteiro
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Universidade Estadual Paulista (UNESP), Instituto de Química, Departamento de Química Orgânica, Francisco Degni 55, Araraquara, 14800-900, Brazil
| | - Cláudia Seidl
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-901, São Paulo, Brazil
| | - Vanessa G P Severino
- Universidade Federal de Goiás (UFG), Instituto de Química, Campus Samambaia, Goiânia, 74690-900, Brazil
| | - Carmen Lúcia Cardoso
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-901, São Paulo, Brazil
| | - Ian Castro-Gamboa
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Universidade Estadual Paulista (UNESP), Instituto de Química, Departamento de Química Orgânica, Francisco Degni 55, Araraquara, 14800-900, Brazil
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Monteiro AF, Seidl C, Severino VGP, Cardoso CL, Castro-Gamboa I. Biotransformation of labdane and halimane diterpenoids by two filamentous fungi strains. ROYAL SOCIETY OPEN SCIENCE 2017; 4:170854. [PMID: 29291077 PMCID: PMC5717651 DOI: 10.1098/rsos.170854] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 10/10/2017] [Indexed: 06/07/2023]
Abstract
Biotransformation of natural products by filamentous fungi is a powerful and effective approach to achieve derivatives with valuable new chemical and biological properties. Although diterpenoid substrates usually exhibit good susceptibility towards fungi enzymes, there have been no studies concerning the microbiological transformation of halimane-type diterpenoids up to now. In this work, we investigated the capability of Fusarium oxysporum (a fungus isolated from the rhizosphere of Senna spectabilis) and Myrothecium verrucaria (an endophyte) to transform halimane (1) and labdane (2) acids isolated from Hymenaea stigonocarpa (Fabaceae). Feeding experiments resulted in the production of six derivatives, including hydroxy, oxo, formyl and carboxy analogues. Incubation of 1 with F. oxysporum afforded 2-oxo-derivative (3), while bioconversion with M. verrucaria provided 18,19-dihydroxy (4), 18-formyl (5) and 18-carboxy (6) bioproducts. Transformation of substrate 2 mediated by F. oxysporum produced a 7α-hydroxy (7) derivative, while M. verrucaria yielded 7α- (7) and 3β-hydroxy (8) metabolites. Unlike F. oxysporum, which showed a preference to transform ring B, M. verrucaria exhibited the ability to hydroxylate both rings A and B from substrate 2. Additionally, compounds 1-8 were evaluated for inhibitory activity against Hr-AChE and Hu-BChE enzymes through ICER-IT-MS/MS assay.
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Affiliation(s)
- Afif F. Monteiro
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Universidade Estadual Paulista (UNESP), Instituto de Química, Departamento de Química Orgânica, Francisco Degni 55, Araraquara, 14800-900, Brazil
| | - Cláudia Seidl
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-901, São Paulo, Brazil
| | - Vanessa G. P. Severino
- Universidade Federal de Goiás (UFG), Instituto de Química, Campus Samambaia, Goiânia, 74690-900, Brazil
| | - Carmen Lúcia Cardoso
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-901, São Paulo, Brazil
| | - Ian Castro-Gamboa
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Universidade Estadual Paulista (UNESP), Instituto de Química, Departamento de Química Orgânica, Francisco Degni 55, Araraquara, 14800-900, Brazil
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Tran QT, Wong WF, Chai CL. Labdane diterpenoids as potential anti-inflammatory agents. Pharmacol Res 2017; 124:43-63. [DOI: 10.1016/j.phrs.2017.07.019] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 07/21/2017] [Accepted: 07/21/2017] [Indexed: 01/20/2023]
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Haque MA, Jana CK. Regiodivergent Remote Arylation of Cycloalkanols to Dysideanone's Fused Carbotetracycles and Its Bridged Isomers. Chemistry 2017; 23:13300-13304. [PMID: 28771837 DOI: 10.1002/chem.201703094] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Indexed: 01/22/2023]
Abstract
Regiodivergent γ and γ' arylations across an all-carbon quaternary center of cycloalkanols to access enantioenriched fused and bridged carbotetracycles are reported. The conformation of the carbocation guided either sequential stereospecific β-C-Me/γ-C-H-shifts or β-C-Me/γ'-C-H-shifts, providing fused carbotetracyclic analogs of dysideanone or bridged tetracycles, respectively. The reaction is highly stereoselective in building three contiguous stereocenters, where one, two, or three could be all-carbon quaternary centers. Interestingly, mechanistic studies revealed a crucial role of a methyl substituent in controlling regioselectivity.
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Affiliation(s)
- Md Ashraful Haque
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Chandan K Jana
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
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Alza NP, Murray AP, Salvador GA. Cativic acid-caffeic acid hybrid exerts cytotoxic effects and induces apoptotic death in human neuroblastoma cells. Naunyn Schmiedebergs Arch Pharmacol 2017; 390:1229-1238. [DOI: 10.1007/s00210-017-1421-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 08/23/2017] [Indexed: 12/27/2022]
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Martins I, Varela A, Frija LMT, Estevão MAS, Planchon S, Renaut J, Afonso CAM, Silva Pereira C. Proteomic Insights on the Metabolism of Penicillium janczewskii during the Biotransformation of the Plant Terpenoid Labdanolic Acid. Front Bioeng Biotechnol 2017; 5:45. [PMID: 28824907 PMCID: PMC5534450 DOI: 10.3389/fbioe.2017.00045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 07/10/2017] [Indexed: 01/24/2023] Open
Abstract
Plant terpenoids compose a natural source of chemodiversity of exceptional value. Many of these compounds own biological/pharmacological activity, others are regarded as unique chemical skeletons for the synthesis of derivatives with improved properties. Functional chemical modification of terpenoids through biotransformation frequently relies on the use of Ascomycota strains, but information on major cellular responses is still largely lacking. Penicillium janczewskii mediates a stereo-selective hydroxylation of labdanolic acid (LA)-terpenoid found abundantly in Cistus ladanifer-producing 3β-hydroxy-labdanolic acid with yields >90%. Herein, combined analyses of mycelial and extracellular differential proteomes demonstrated that the plant terpenoid increased stress responses, especially against oxidative stress (e.g., accumulation of superoxide dismutase) and apparently altered mitochondria functioning. One putative cytochrome P450 monooxygenase differentially accumulated in the secretome and the terpenoid bioconversion was inhibited in vivo in the presence of a P450 inhibitor. The stereo-selective hydroxylation of the plant terpenoid is likely mediated by P450 enzymes, yet its unequivocal identity remains unclear. To the best of our knowledge, this is the first time that proteomics was used to investigate how a plant terpenoid impacts the metabolism of a filamentous fungus during its efficiently biotransformation. Our findings may encourage the development of new strategies for the valorization of plant natural resources through biotechnology.
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Affiliation(s)
- Isabel Martins
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB NOVA), Oeiras, Portugal
| | - Adélia Varela
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB NOVA), Oeiras, Portugal
- Instituto Nacional Investigação Agrária e Veterinária, Oeiras, Portugal
| | - Luís M. T. Frija
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - Mónica A. S. Estevão
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - Sébastien Planchon
- Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology, Belvaux, Luxembourg
| | - Jenny Renaut
- Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology, Belvaux, Luxembourg
| | - Carlos A. M. Afonso
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - Cristina Silva Pereira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB NOVA), Oeiras, Portugal
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42
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Kemper K, Hirte M, Reinbold M, Fuchs M, Brück T. Opportunities and challenges for the sustainable production of structurally complex diterpenoids in recombinant microbial systems. Beilstein J Org Chem 2017; 13:845-854. [PMID: 28546842 PMCID: PMC5433224 DOI: 10.3762/bjoc.13.85] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 04/11/2017] [Indexed: 01/24/2023] Open
Abstract
With over 50.000 identified compounds terpenes are the largest and most structurally diverse group of natural products. They are ubiquitous in bacteria, plants, animals and fungi, conducting several biological functions such as cell wall components or defense mechanisms. Industrial applications entail among others pharmaceuticals, food additives, vitamins, fragrances, fuels and fuel additives. Central building blocks of all terpenes are the isoprenoid compounds isopentenyl diphosphate and dimethylallyl diphosphate. Bacteria like Escherichia coli harbor a native metabolic pathway for these isoprenoids that is quite amenable for genetic engineering. Together with recombinant terpene biosynthesis modules, they are very suitable hosts for heterologous production of high value terpenes. Yet, in contrast to the number of extracted and characterized terpenes, little is known about the specific biosynthetic enzymes that are involved especially in the formation of highly functionalized compounds. Novel approaches discussed in this review include metabolic engineering as well as site-directed mutagenesis to expand the natural terpene landscape. Focusing mainly on the validation of successful integration of engineered biosynthetic pathways into optimized terpene producing Escherichia coli, this review shall give an insight in recent progresses regarding manipulation of mostly diterpene synthases.
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Affiliation(s)
- Katarina Kemper
- Professorship for Industrial Biocatalysis, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Max Hirte
- Professorship for Industrial Biocatalysis, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Markus Reinbold
- Professorship for Industrial Biocatalysis, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Monika Fuchs
- Professorship for Industrial Biocatalysis, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Thomas Brück
- Professorship for Industrial Biocatalysis, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
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43
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Li F, Tu Q, Chen S, Zhu L, Lan Y, Gong J, Yang Z. Bioinspired Asymmetric Synthesis of Hispidanin A. Angew Chem Int Ed Engl 2017; 56:5844-5848. [PMID: 28332749 DOI: 10.1002/anie.201700838] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Indexed: 11/08/2022]
Abstract
The first enantiospecific synthesis of hispidanin A (4), a dimeric diterpenoid from the rhizomes of Isodon hispida, was achieved with a longest linear sequence of 12 steps in 6.5 % overall yield. A key component is the use of the abundant and naturally occurring diterpenoids (+)-sclareolide and (+)-sclareol as starting materials, which enables the gram-scale preparation of the key intermediates totarane (1) and s-trans-12E,14-labdadien-20,8β-olide (2). Subsequently a thermal or an erbium-catalyzed intermolecular Diels-Alder reaction of totarane (1) with labdadienolide (2) provide convergent and rapid access to the natural product hispidanin A (4). The synthetic studies have offered significant impetus for the efficient construction of these architecturally complex natural products.
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Affiliation(s)
- Fuzhuo Li
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Qian Tu
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Sijia Chen
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Lei Zhu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400030, China
| | - Yu Lan
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400030, China
| | - Jianxian Gong
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Zhen Yang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.,Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China.,Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
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44
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Li F, Tu Q, Chen S, Zhu L, Lan Y, Gong J, Yang Z. Bioinspired Asymmetric Synthesis of Hispidanin A. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700838] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Fuzhuo Li
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Shenzhen 518055 China
| | - Qian Tu
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Shenzhen 518055 China
| | - Sijia Chen
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Shenzhen 518055 China
| | - Lei Zhu
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 China
| | - Yu Lan
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 China
| | - Jianxian Gong
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Shenzhen 518055 China
| | - Zhen Yang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology; Peking University Shenzhen Graduate School; Shenzhen 518055 China
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, and Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 China
- Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology; Ocean University of China; 5 Yushan Road Qingdao 266003 China
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45
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Lin SC, Chein RJ. Total Synthesis of the Labdane Diterpenes Galanal A and B from Geraniol. J Org Chem 2017; 82:1575-1583. [PMID: 28035834 DOI: 10.1021/acs.joc.6b02766] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first total synthesis of galanal A and B has been achieved from naturally occurring geraniol. Key steps in this synthesis are the use of a Lewis acid assisted chiral Brønsted acid (chiral LBA) mediated cationic polyene cyclization and a titanocene-mediated radical cyclization for the asymmetric assembly of the "AB" ring and the construction of the all-carbon quaternary center at the junction of the "BC" ring, respectively.
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Affiliation(s)
- Shih-Che Lin
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan
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46
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Pandey SK, Khan MF, Awasthi S, Sangwan R, Jain S. A Quantum Theory of Atoms-in-Molecules Perspective and DFT Study of Two Natural Products: Trans-Communic Acid and Imbricatolic Acid. Aust J Chem 2017. [DOI: 10.1071/ch16406] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The topological features of the charge densities, ρ(r), and the chemical reactivity of two most biologically relevant and chemically interesting scaffold systems i.e. trans-communic acid and imbricatolic acid have been determined using density functional theory. To identify, characterize, and quantify efficiently, the non-covalent interactions of the atoms in the molecules have been investigated quantitatively using Bader's quantum theory of atoms-in-molecules (QTAIM) technique. The bond path is shown to persist for a range of weak H···H as well as C···H internuclear distances (in the range of 2.0–3.0 Å). These interactions exhibit all the hallmarks of a closed-shell weak interaction. To get insights into both systems, chemical reactivity descriptors, such as HOMO–LUMO, ionization potential, and chemical hardness, have been calculated and used to probe the relative stability and chemical reactivity. Some other useful information is also obtained with the help of several other electronic parameters, which are closely related to the chemical reactivity and reaction paths of the products investigated. Trans-communic acid seems to be chemically more sensitive when compared with imbricatolic acid due to its experimentally observed higher half-maximal inhibitory concentration (bioactivity parameter) value, which is in accordance with its higher chemical reactivity as theoretically predicted using density functional theory-based reactivity index. The quantum chemical calculations have also been performed in solution using different solvents, and the relative order of their structural and electronic properties as well as QTAIM-based parameters show patterns similar to those observed in gas phase only. This study further exemplifies the use and successful application of the bond path concept and the quantum theory of atoms-in-molecules.
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47
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Wu XD, Luo D, Tu WC, Deng ZT, Chen XJ, Su J, Ji X, Zhao QS. Hypophyllins A–D, Labdane-Type Diterpenoids with Vasorelaxant Activity from Hypoestes phyllostachya “Rosea”. Org Lett 2016; 18:6484-6487. [PMID: 27978671 DOI: 10.1021/acs.orglett.6b03388] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Xing-De Wu
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China
| | - Dan Luo
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China
| | - Wen-Chao Tu
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China
| | - Zhen-Tao Deng
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China
| | - Xue-Jiao Chen
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China
| | - Jia Su
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China
| | - Xu Ji
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China
| | - Qin-Shi Zhao
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China
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48
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Bouanou H, Gil JA, Alvarez-Manzaneda R, Chahboun R, Alvarez-Manzaneda E. Oxidative Coupling of (-)-Sclareol and Related Diols Leading to Oxepane Terpenoids. J Org Chem 2016; 81:10002-10008. [PMID: 27689238 DOI: 10.1021/acs.joc.6b01834] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Treatment of (-)-sclareol and related compounds with lead tetraacetate affords tetracyclic compounds bearing a 2,8-dioxabicyclo[5.2.0]nonane moiety with complete regio- and stereoselectivity. This process, which is also applicable to 1,5-diols with a similar substitution pattern, facilitates the development of efficient syntheses toward oxepane terpenoids, such as aplysistatin derivatives.
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Affiliation(s)
- Hanane Bouanou
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Granada , 18071 Granada, Spain
| | - Juan A Gil
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Granada , 18071 Granada, Spain
| | - Ramón Alvarez-Manzaneda
- Área de Química Orgánica, Departamento de Química y Física, Universidad de Almería , 04120 Almería, Spain
| | - Rachid Chahboun
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Granada , 18071 Granada, Spain
| | - Enrique Alvarez-Manzaneda
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Granada , 18071 Granada, Spain
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49
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Zhou J, Zhang J, Li R, Liu J, Fan P, Li Y, Ji M, Dong Y, Yuan H, Lou H. Hapmnioides A-C, Rearranged Labdane-Type Diterpenoids from the Chinese Liverwort Haplomitrium mnioides. Org Lett 2016; 18:4274-6. [PMID: 27513610 DOI: 10.1021/acs.orglett.6b01854] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Many exceptional labdane-type diterpenoids have been exclusively found in liverworts, which serve as taxonomic molecules or play important ecological roles in interactions among organisms. Three unprecedented labdane-type diterpenoids hapmnioides A (1), B (2), and C (3) formed through cascade rearrangement from the Chinese liverwort Haplomitrium mnioides are reported. Their structures were established by comprehensive spectroscopic analysis coupled with single-crystal X-ray diffraction, and their anti-inflammatory activities were also preliminarily tested.
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Affiliation(s)
- Jinchuan Zhou
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Jiaozhen Zhang
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Ruijuan Li
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Jun Liu
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Peihong Fan
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Yi Li
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Mei Ji
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Yiwen Dong
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Huiqing Yuan
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Hongxiang Lou
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
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50
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Ohtawa M, Hishinuma Y, Takagi E, Yamada T, Ito F, Arima S, Uchida R, Kim YP, Ōmura S, Tomoda H, Nagamitsu T. Synthesis and Structural Revision of Cyslabdan. Chem Pharm Bull (Tokyo) 2016; 64:1370-7. [DOI: 10.1248/cpb.c16-00382] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Masaki Ohtawa
- Graduate School of Pharmaceutical Sciences, Kitasato University
| | | | - Eiji Takagi
- Graduate School of Pharmaceutical Sciences, Kitasato University
| | - Takafumi Yamada
- Graduate School of Pharmaceutical Sciences, Kitasato University
| | - Fumihiro Ito
- Graduate School of Pharmaceutical Sciences, Kitasato University
| | - Shiho Arima
- Graduate School of Pharmaceutical Sciences, Kitasato University
| | - Ryuji Uchida
- Graduate School of Pharmaceutical Sciences, Kitasato University
| | | | - Satoshi Ōmura
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University
| | - Hiroshi Tomoda
- Graduate School of Pharmaceutical Sciences, Kitasato University
| | - Tohru Nagamitsu
- Graduate School of Pharmaceutical Sciences, Kitasato University
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