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Zhu YT, Liu XN, Lu BT, Cheng YX, Wang YZ. Novel Sesquiterpenoids with Renoprotective Activities from the Fruits of Alpinae oxyphylla as Potent TGF-β1/Smads Phosphorylation Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:13138-13153. [PMID: 38814319 DOI: 10.1021/acs.jafc.4c01720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
The fruit of Alpinia oxyphylla Miq is an important food spice in southern China and has been used in the treatment of kidney disorders for centuries. In order to discover the natural products with potent renoprotective activities in A. oxyphylla and provide some references for its usage, systematic phytochemical studies were carried out and 24 new diverse sesquiterpenoids, including seven guaiane sesquiterpenoids (1-7), 10 eudesmane sesquiterpenoids (9-13, 18, 19, and 21-23), six cadinane sesquiterpenoids (31-35 and 38), and an eremophilane sesquiterpenoid (40), along with 24 known analogues were isolated and elucidated by analysis of spectroscopic data and quantum-chemical calculations. Biological evaluation showed that 6 sesquiterpenoids could significantly inhibit the expression of extracellular matrix components, α-SMA in TGF-β1 induced kidney proximal tubular cells (NRK-52e) at low concentrations, and 9 sesquiterpenoids could also downregulate fibronectin and collagen I in a concentration-dependent manner, showing their potential in renal fibrosis. Further action mechanism study displayed that TGF-β1/Smads pathway might be involved in the antifibrotic effects of active sesquiterpenoids 15 and 43. These studies suggest that A. oxyphylla may have a potential to serve as a functional food in preventing renal fibrosis-associated diseases.
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Affiliation(s)
- Yue-Tong Zhu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
| | - Xiao-Ning Liu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
- Institute for Inheritance-Based Innovation of Chinese Medicine, School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, P. R. China
| | - Bo-Tao Lu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
| | - Yong-Xian Cheng
- Institute for Inheritance-Based Innovation of Chinese Medicine, School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, P. R. China
| | - Yan-Zhi Wang
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
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2
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Sun Y, Fu S, Liu B. Asymmetric synthesis of the fully functionalized six-membered A-ring of siphonol A. Org Biomol Chem 2024; 22:2958-2962. [PMID: 38483290 DOI: 10.1039/d4ob00104d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
A synthetic study toward the construction of the fully functionalized six-membered A-ring of siphonol A is described. The salient features include the introduction of a six-membered ring system through a HWE reaction, the construction of a stereocenter at C5 via a hetero-Diels-Alder reaction, and the installation of the fully functionalized six-membered A-ring of siphonol A through photolytic decarboxylation.
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Affiliation(s)
- Ying Sun
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Shaomin Fu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Bo Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
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3
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Dong J, Zhou M, Qin Q, Li T, Yao X, Geng J, Yu Y. Structurally diverse new eudesmane sesquiterpenoids with anti-inflammatory activity from the fruits of Alpinia oxyphylla. Bioorg Chem 2023; 134:106431. [PMID: 36857933 DOI: 10.1016/j.bioorg.2023.106431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/17/2023] [Accepted: 01/20/2023] [Indexed: 02/22/2023]
Abstract
The phytochemical investigation of the fruits of Alpinia oxyphylla led to the isolation and identification of 40 structurally diverse sesquiterpenoids, including 17 new eudesmane sesquiterpenoids (1-17) and 23 known analogues (18-40). Among the isolates, 14 and 17 were unusual rearranged eudesmane sesquiterpenoids, featuring rare 5/6-fused and 6/8-fused bicyclic carbon skeleton, respectively; 15 and 16 were the novel 6,7-seco-eudesmane sesquiterpenoids isolated from plant-origin for the first time, 1 and 3-6 were rare nor-eudesmane sesquiterpenoids. Their structures were elucidated by comprehensive spectroscopic data analysis (NMR, HRESIMS, IR, UV), single crystal X-ray diffraction, and quantum chemistry calculations (ECD and 13C NMR). Moreover, all isolates were evaluated by measuring their inhibitory effect on nitric oxide (NO) in LPS-stimulated BV-2 cells. As a result, compounds 11, 20, 24 and 40 showed moderate to strong inhibition on NO productions, with IC50 values ranging from 21.63 to 60.70 μM. Meanwhile, these compounds also partially decreased the secretion of TNF-α and IL-6 in LPS-stimulated BV-2 cells. Furthermore, 20 could down-regulate protein expressions (COX-2 and iNOS) and observably inhibit the mRNA expressions of TNF-α, IL-6, COX-2 and iNOS. In this study, the discovery of structurally diverse anti-inflammatory sesquiterpenoids from the fruits of A. oxyphylla could benefit the further development and utilization of this plant.
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Affiliation(s)
- Jie Dong
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China and Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China
| | - Mi Zhou
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China and Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China
| | - Qianyu Qin
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China and Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China
| | - Ting Li
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China and Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China
| | - Xinsheng Yao
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China and Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China.
| | - Jianliang Geng
- College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Yang Yu
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China and Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China.
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4
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Pazur EJ, Wipf P. Recent syntheses and biological profiling of quassinoids. Org Biomol Chem 2022; 20:3870-3889. [PMID: 35506992 DOI: 10.1039/d2ob00490a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Quassinoid natural products have gained considerable recognition for their diverse biological properties and their synthetically challenging, highly oxygenated polycyclic structures. Herein, we discuss strategies and tactics in the total synthesis of quassinoids that have been evolving over the past 15 years. Additionally, recent structure-activity relationships and potential biological mechanisms of actions are briefly summarized.
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Affiliation(s)
- Ethan J Pazur
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Peter Wipf
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.,School of Pharmacy, University of Eastern Finland, FI-70210 Kuopio, Finland
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5
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Shivam, Tiwari G, Kumar M, Chauhan ANS, Erande RD. Recent advances in cascade reactions and their mechanistic insights: a concise strategy to synthesize complex natural products and organic scaffolds. Org Biomol Chem 2022; 20:3653-3674. [PMID: 35416224 DOI: 10.1039/d2ob00452f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The beauty of cascade reactions to bestow us with cumbersome organic scaffolds has made them a cutting-edge area of research. Although the planning of cascades may require intuition, their results can be highly impactful. The development of cascades to provide specific targeted molecules of an appropriate structural and stereochemical framework poses a significant challenge but can serve as one of the most impressive tools in organic synthesis. This review shares a broad interest in compiling cascade transformations towards the construction of polycyclic frameworks, induction of chirality/asymmetry in the protocol, etc. to solve diverse challenges in organic synthesis pursuits, as cascades enable the rapid and efficient construction of complex architectures from simple molecules. The studies highlighted herein manifest the utilization of a range of cascade reactions under various classifications for generating natural product skeletons such as palau'amine, benzosimuline, arcutinine, and others from simple building blocks, with emphasis on breakthroughs and potential for asymmetric synthesis. The exquisite synthetic designs of recently completed total synthesis of natural products with a focus on strategic concerns are also highlighted in this review.
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Affiliation(s)
- Shivam
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | - Geetika Tiwari
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | - Manish Kumar
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | | | - Rohan D Erande
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
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Kreibich M, Petrović D, Brückner R. Mechanistic Studies of the Deslongchamps Annulation. J Org Chem 2018; 83:1116-1133. [PMID: 29131961 DOI: 10.1021/acs.joc.7b02341] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Cs2CO3-mediated annulations ("Deslongchamps annulations") of three spirocyclic benzoquinone monoketals 5b-d with an ester or acyl substituent at C-2 to two tert-butyl esters of γ,δ-unsaturated β-ketocarboxyl acids ("Nazarov reagents"; 2a,b) were monitored 1H NMR spectroscopically. This revealed that a primary product, by all likelihood the Michael adduct, forms fast and prior to the appearance of the Deslongchamps adduct. These primary products form reversibly. This was proved by two crossover and four scavenging experiments. Therein, components already incorporated in one of the mentioned primary products ended up in Deslongchamps adducts different from the one, which would have resulted if the respective primary product had reacted alone. However, these experiments leave open whether our primary products are intermediates en route to Deslongchamps products or whether they represent dead ends.
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Affiliation(s)
- Michael Kreibich
- Institut für Organische Chemie, Albert-Ludwigs-Universität , Albertstraße 21, D-79104 Freiburg im Breisgau, Germany
| | - Denis Petrović
- Institut für Organische Chemie, Albert-Ludwigs-Universität , Albertstraße 21, D-79104 Freiburg im Breisgau, Germany.,Noramco GmbH , Badische Bahnhofstrasse 16, CH-8212 Neuhausen, Switzerland
| | - Reinhard Brückner
- Institut für Organische Chemie, Albert-Ludwigs-Universität , Albertstraße 21, D-79104 Freiburg im Breisgau, Germany
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7
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Lindsay VNG, Murphy RA, Sarpong R. Effect of protic additives in Cu-catalysed asymmetric Diels-Alder cycloadditions of doubly activated dienophiles: towards the synthesis of magellanine-type Lycopodium alkaloids. Chem Commun (Camb) 2017; 53:10291-10294. [PMID: 28869258 PMCID: PMC6289252 DOI: 10.1039/c7cc06367a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pronounced beneficial effect of a precise amount of protic additive in an enantioselective Cu-catalysed Diels-Alder reaction is reported. This reaction, which employs a cyclic alkylidene β-ketoester as a dienophile, represents one of the first examples of a transformation where these extremely versatile, though highly unstable reaction partners participate effectively in catalytic asymmetric cycloaddition with a functionalised diene. The cycloadduct was used as an intermediate towards the synthesis of magellanine-type Lycopodium alkaloids featuring a Stille cross-coupling of a highly congested enol triflate and a unique Meinwald rearrangement/cyclopropanation sequence.
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Affiliation(s)
- Vincent N. G. Lindsay
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Rebecca A. Murphy
- Pfizer Inc., 10770 Science Center Drive, La Jolla, California 92121, USA
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, California 94720, USA,
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8
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Gallier F, Martel A, Dujardin G. Enantioselective Access to Robinson Annulation Products and Michael Adducts as Precursors. Angew Chem Int Ed Engl 2017; 56:12424-12458. [PMID: 28436571 DOI: 10.1002/anie.201701401] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Indexed: 12/26/2022]
Abstract
The Robinson annulation is a reaction that has been useful for numerous syntheses since its discovery in 1935, especially in the field of steroid synthesis. The products are usually obtained after three consecutive steps: the formation of an enolate (or derivative), a conjugate addition, and an aldol reaction. Over the years, several methodological improvements have been made for each individual step or alternative routes have been devised to access the Robinson annulation products. The first part of this Review outlines the most relevant developments towards the formation of monocarbonyl-derived Robinson annulation products (MRA products, MRAPs) and activated monocarbonyl-derived Robinson annulation products (AMRA products, AMRAPs). The following sections are then devoted to the diastereoselective and enantioselective synthesis of these products, while the last section describes the enantiomeric resolution of racemic mixtures.
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Affiliation(s)
- Florian Gallier
- Laboratoire de Chimie Biologique, EA 4505, Université de Cergy-Pontoise, 5 Mail Gay-Lussac, 95031, Cergy-Pontoise, France
| | - Arnaud Martel
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS Université du Maine, Avenue O. Messiaen, Le Mans, France
| | - Gilles Dujardin
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS Université du Maine, Avenue O. Messiaen, Le Mans, France
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9
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Gallier F, Martel A, Dujardin G. Enantioselektive Synthese von Robinson‐Anellierungsprodukten und Michael‐Addukten als Vorstufen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701401] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Florian Gallier
- Laboratoire de Chimie Biologique, EA 4505 Université de Cergy-Pontoise 5 Mail Gay-Lussac 95031 Cergy-Pontoise Frankreich
| | - Arnaud Martel
- Institut des Molécules et Matériaux du Mans UMR 6283 CNRS Université du Maine Avenue O. Messiaen Le Mans Frankreich
| | - Gilles Dujardin
- Institut des Molécules et Matériaux du Mans UMR 6283 CNRS Université du Maine Avenue O. Messiaen Le Mans Frankreich
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10
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Huang SH, Liang KH, Lu JS, Chang WS, Su MD, Yang TF. Total Synthesis of (+)-Antrocin and Its Diastereomer and Clarification of the Absolute Stereochemistry of (-)-Antrocin. J Org Chem 2017; 82:9576-9584. [PMID: 28825480 DOI: 10.1021/acs.joc.7b01600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Using 2,2-dimethyl cyclohexanone as the starting compound, (+)-antrocin and its diastereomer have been synthesized. The absolute stereochemistry of (-)-antrocin, a natural sesqui-terpenoid and an antagonist in some types of cancer cells, was clarified using the character data of (+)-antrocin. The synthetic procedure involved two key steps: (1) the reaction of vinyl magnesium bromide with 2,2-dimethyl-6-t-butyl-dimethyl-silyoxy-methyl-1-cyclo-hexanone to give a vinyl cyclohexanol derivative and (2) a highly stereoselective intramolecular Diels-Alder (IMDA) reaction of the camphanate-containing triene intermediate. The relative energy levels of the possible transition states of the IMDA reaction of the camphanate-containing triene were obtained from density functional theory calculations, proving the stereospecific formation of the target molecule.
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Affiliation(s)
- Sheng-Han Huang
- Department of Applied Chemistry, National Chi Nan University , 1 University Road, Puli, 545 Nantou, Taiwan
| | - Kai-Hsiang Liang
- Department of Applied Chemistry, National Chi Nan University , 1 University Road, Puli, 545 Nantou, Taiwan
| | - Jia-Syun Lu
- Department of Applied Chemistry, National Chiayi University , 60004 Chiayi, Taiwan
| | - Wei-Sheng Chang
- Department of Applied Chemistry, National Chi Nan University , 1 University Road, Puli, 545 Nantou, Taiwan
| | - Ming-Der Su
- Department of Applied Chemistry, National Chiayi University , 60004 Chiayi, Taiwan.,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University , 80708 Kaohsiung, Taiwan
| | - Te-Fang Yang
- Department of Applied Chemistry, National Chi Nan University , 1 University Road, Puli, 545 Nantou, Taiwan
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Recent Advances in Substrate-Controlled Asymmetric Cyclization for Natural Product Synthesis. Molecules 2017; 22:molecules22071069. [PMID: 28672881 PMCID: PMC6152324 DOI: 10.3390/molecules22071069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Accepted: 06/21/2017] [Indexed: 02/03/2023] Open
Abstract
Asymmetric synthesis of naturally occurring diverse ring systems is an ongoing and challenging research topic. A large variety of remarkable reactions utilizing chiral substrates, auxiliaries, reagents, and catalysts have been intensively investigated. This review specifically describes recent advances in successful asymmetric cyclization reactions to generate cyclic architectures of various natural products in a substrate-controlled manner.
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Abstract
This review focuses on total syntheses of diterpenoids starting from carvone (1) since 2006 in the alphabetical order of compound names.
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Affiliation(s)
- Hisahiro Hagiwara
- Graduate School of Science and Technology, Niigata University, 8050, 2-Nocho, Ikarashi, Nishi-ku, Niigata, 950-2181, Japan
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14
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Dhambri S, Mohammad S, Van Buu ON, Galvani G, Meyer Y, Lannou MI, Sorin G, Ardisson J. Recent advances in the synthesis of natural multifunctionalized decalins. Nat Prod Rep 2015; 32:841-64. [PMID: 25891138 DOI: 10.1039/c4np00142g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This review highlights recent innovative synthetic strategies developed for the stereoselective construction of natural complex decalin systems. It offers an insight into various synthetic targets and approaches and provides information for developments within the area of natural products as well as synthetic methodology.
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Affiliation(s)
- S Dhambri
- Paris Descartes University, Sorbonne Paris Cité, Faculté des Sciences Pharmaceutiques et Biologiques, Unité CNRS UMR 8638 COMÈTE, 4 avenue de l'observatoire, 75270 PARIS Cedex 06.
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15
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Abstract
This review covers the isolation and chemistry of diterpenoids from terrestrial as opposed to marine sources and includes labdanes, clerodanes, pimaranes, abietanes, kauranes, gibberellins, cembranes and their cyclization products. The literature from January to December 2013 is reviewed.
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Ravindar K, Caron PY, Deslongchamps P. Anionic Polycyclization Entry to Tricycles Related to Quassinoids and Terpenoids: A Stereocontrolled Total Synthesis of (+)-Cassaine. J Org Chem 2014; 79:7979-99. [DOI: 10.1021/jo501122k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kontham Ravindar
- Département
de Chimie, Faculté des Sciences et de Génie, Pavillon
Alexandre-Vachon, Université Laval, 1045 avenue de la Médecine, Québec, Québec G1V 0A6, Canada
| | - Pierre-Yves Caron
- Département
de Chimie, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - Pierre Deslongchamps
- Département
de Chimie, Faculté des Sciences et de Génie, Pavillon
Alexandre-Vachon, Université Laval, 1045 avenue de la Médecine, Québec, Québec G1V 0A6, Canada
- Département
de Chimie, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
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Peña J, Moro RF, Marcos IS, Sanz F, Díez D. Highly functionalised cyclohexa-1,3-dienes by sulfonyl Nazarov reagents. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.04.076] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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