1
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Tostado J, Milián A, Vaquero JJ, Fernández-Rodríguez MA. Synthesis of Seven- and Eight-Membered Rings by a Brønsted Acid Catalyzed Cationic Carbocyclization of Biphenyl Embedded Enynes. Org Lett 2024; 26:3343-3348. [PMID: 38603574 PMCID: PMC11059095 DOI: 10.1021/acs.orglett.4c00647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/09/2024] [Accepted: 04/10/2024] [Indexed: 04/13/2024]
Abstract
A Brønsted acid catalyzed cyclization of o-alkenyl-o'-alkynylbiaryls for the synthesis of biologically relevant dibenzo-fused medium-sized rings has been developed. The outcome of the cyclization is determined by the nature of the substituent at the alkyne, with arenes favoring seven-membered rings and alkyl substituents producing eight-membered rings. These reactions proceed via a vinyl cation, which is captured by water and, notably, by C-nucleophiles, such as electron-rich (hetero)arenes.
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Affiliation(s)
- Jaime Tostado
- Universidad de Alcalá (IRYCIS).
Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química “Andrés
M. del Río” (IQAR), Autovía A-II, Km 33.1, 28805-Alcalá de Henares, Madrid, Spain
| | - Ana Milián
- Universidad de Alcalá (IRYCIS).
Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química “Andrés
M. del Río” (IQAR), Autovía A-II, Km 33.1, 28805-Alcalá de Henares, Madrid, Spain
| | - Juan J. Vaquero
- Universidad de Alcalá (IRYCIS).
Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química “Andrés
M. del Río” (IQAR), Autovía A-II, Km 33.1, 28805-Alcalá de Henares, Madrid, Spain
| | - Manuel A. Fernández-Rodríguez
- Universidad de Alcalá (IRYCIS).
Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química “Andrés
M. del Río” (IQAR), Autovía A-II, Km 33.1, 28805-Alcalá de Henares, Madrid, Spain
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2
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Zhang Y, Liu WQ, Li J. Constructing an artificial short route for cell-free biosynthesis of the phenethylisoquinoline scaffold. Synth Syst Biotechnol 2023; 8:610-617. [PMID: 37781172 PMCID: PMC10534260 DOI: 10.1016/j.synbio.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 09/01/2023] [Accepted: 09/15/2023] [Indexed: 10/03/2023] Open
Abstract
Plant-originated natural products are important drug sources. However, total biosynthesis of these compounds is often not achievable due to their uncharacterized, lengthy biosynthetic pathways. In nature, phenethylisoquinoline alkaloids (PIAs) such as colchicine are biosynthesized via a common precursor 6,7-dihydroxy-1-(4-hydroxyphenylethyl)-1,2,3,4-tetrahydroisoquinoline (i.e., phenethylisoquinoline scaffold, PIAS). PIAS is naturally synthesized in plants by using two upstream substrates (l-phenylalanine and l-tyrosine) catalyzed by eight enzymes. To shorten this native pathway, here we designed an artificial route to synthesize PIAS with two enzymatic steps from two alternative substrates of 3-(4-hydroxyphenyl) propanol (4-HPP) and dopamine. In the two-step bioconversion, an alcohol dehydrogenase selected from yeast (i.e., ADH7) was able to oxidize its non-native alcohol substrate 4-HPP to form the corresponding aldehyde product, which was then condensed with dopamine by the (S)-norcoclaurine synthase (NCS) to synthesize PIAS. After optimization, the final enzymatic reaction system was successfully scaled up by 200 times from 50 μL to 10 mL, generating 5.4 mM of PIAS. We envision that this study will provide an easy and sustainable approach to produce PIAS and thus lay the foundation for large-scale production of PIAS-derived natural products.
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Affiliation(s)
- Yuhao Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Wan-Qiu Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Jian Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
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3
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Dutta L, Mondal A, Maurya JP, Mukhopadhyay D, Ramasastry SSV. Conceptual advances in nucleophilic organophosphine-promoted transformations. Chem Commun (Camb) 2023; 59:11045-11056. [PMID: 37656437 DOI: 10.1039/d3cc03648k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Catalysis by trivalent nucleophilic organophosphines has emerged as an essential tool in organic synthesis. Several new organic transformations promoted by phosphines substantiate and complement the existing synthetic chemistry tools. Mere design of the substrate and reagent combinations has introduced new modes of reactivity patterns, which are otherwise difficult to achieve. These design considerations have led to the rapid build-up of complex molecular entities and laid a solid foundation to synthesise bioactive natural products and pharmaceuticals. This article presents an overview of some of the conceptual advances, including our contributions to nucleophilic organophosphine chemistry. The scope, limitations, mechanistic insights, and applications of these metal-free transformations are discussed elaborately.
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Affiliation(s)
- Lona Dutta
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
| | - Atanu Mondal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
| | - Jay Prakash Maurya
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
| | - Dipto Mukhopadhyay
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
| | - S S V Ramasastry
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
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4
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Zhu S, Pan Y, Sun Y, Hong X, Chen X, Han Y, Yan C, Shi Y, Hou H. Copper-Catalyzed Bromo-cyanomethylative Cyclization of Enynes. J Org Chem 2022; 87:4455-4459. [PMID: 35258964 DOI: 10.1021/acs.joc.1c02949] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A copper-catalyzed bromo-cyanomethylative cyclization of 1,6-enynes is demonstrated. The treatment of 2-bromoacetonitrile with CuI enables the alkyl radical generation and triggers the radical addition/cyclization/bromination sequence, giving various vinyl C-Br bonds containing functionalized heterocycles in good yields.
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Affiliation(s)
- Shaoqun Zhu
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Yingjie Pan
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Yue Sun
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Xiaoyan Hong
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Xiaoyun Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212005, China
| | - Ying Han
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Chaoguo Yan
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Yaocheng Shi
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Hong Hou
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
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5
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Enayati A, Banach M, Jamialahmadi T, Sahebkar A. Protective role of nutraceuticals against myocarditis. Biomed Pharmacother 2021; 146:112242. [PMID: 34953630 DOI: 10.1016/j.biopha.2021.112242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 09/18/2021] [Accepted: 09/22/2021] [Indexed: 01/22/2023] Open
Abstract
Myocarditis is an inflammatory disease of the myocardium that mostly affects young adults. The disease is commonly caused by viral infection, medications, autoimmune disorders, and inflammatory conditions. Nearly 50% of the cases of myocarditis are due to post-viral immune response in a setting of an identifiable or non-identifiable infection. The clinical manifestation is nonspecific ranging from asymptomatic courses to sudden death in infants and young patients. This review describes the properties of phytochemicals as plant-derived active ingredients which can be used in the prevention and treatment of myocarditis and its associated risk factors. Meanwhile, it has illustrated epidemiological analyses, mechanism of action, and the metabolism of phytochemicals in animal and human clinical trials. We also mentioned the precise mechanism of action by which phytochemicals elicit their anti-viral, anti-inflammatory, antioxidant, and immunomodulatory effects and how they regulate signal transduction pathways. Nevertheless, comprehensive clinical trials are required to study the properties of phytochemicals in vivo, in vitro, and in silico for a proper management of myocarditis. Our findings indicate that phytochemicals function as potent adjunctive therapeutic drugs in myocarditis and its related complications.
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Affiliation(s)
- Ayesheh Enayati
- Ischemic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Maciej Banach
- Department of Preventive Cardiology and Lipidology, Chair of Nephrology and Hypertension, Medical University of Lodz, Poland; Cardiovascular Research Centre, University of Zielona Gora, Zielona Gora, Poland.
| | - Tannaz Jamialahmadi
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhossein Sahebkar
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; School of Medicine, The University of Western Australia, Perth, Australia; School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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6
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Stereoselective construction of novel biaryl bridged seven-membered ring scaffolds via intramolecular [3 + 2] cycloaddition reactions. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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7
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Poddighe D, Romano M, Garcia-Bournissen F, Demirkaya E. Conventional and novel therapeutic options in children with familial Mediterranean fever: A rare autoinflammatory disease. Br J Clin Pharmacol 2021; 88:2484-2499. [PMID: 34799863 DOI: 10.1111/bcp.15149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 11/01/2021] [Accepted: 11/04/2021] [Indexed: 12/15/2022] Open
Abstract
Familial Mediterranean fever (FMF) is the most common monogenic autoinflammatory disease and is usually diagnosed in childhood, especially in the first decade of life. Paediatric FMF is characterized by a protean clinical expression and a variable therapeutic response, which can make its medical management very challenging. However, even if long-term complications of untreated FMF (e.g. amyloidosis and related organ damage) are less frequent in children compared to adults, they are not uncommon. Colchicine is the mainstay of the therapy in paediatric FMF; however, if children develop colchicine intolerance and/or resistance, biologics, particularly interleukin-1 antagonists, must be considered. Other conventional or biological therapeutic options do not currently have appropriate evidence-based support, except for some specific clinical presentations (e.g., arthritis). In this review, we discuss the biological basis and the clinical evidence for the current pharmacological treatment options available for paediatric FMF.
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Affiliation(s)
- Dimitri Poddighe
- Department of Medicine, Nazarbayev University School of Medicine, Nur-Sultan, Kazakhstan.,Clinical Academic Department of Pediatrics, National Research Center of Maternal and Child Health, University Medical Center, Nur-Sultan, Kazakhstan
| | - Micol Romano
- Schulich School of Medicine & Dentistry, Department of Pediatrics, Division of Pediatric Rheumatology, University of Western Ontario, London, ON, Canada.,Schulich School of Medicine & Dentistry, Department of Pediatrics, Canadian Behcet and Autoinflammatory Center (CAN BE AID), University of Western Ontario, London, ON, Canada
| | - Facundo Garcia-Bournissen
- Schulich School of Medicine & Dentistry, Department of Pediatrics, Division of Pharmacology, University of Western Ontario, London, ON, Canada.,Schulich School of Medicine & Dentistry, Department of Epidemiology and Biostatistics, University of Western Ontario, London, ON, Canada
| | - Erkan Demirkaya
- Schulich School of Medicine & Dentistry, Department of Pediatrics, Division of Pediatric Rheumatology, University of Western Ontario, London, ON, Canada.,Schulich School of Medicine & Dentistry, Department of Pediatrics, Canadian Behcet and Autoinflammatory Center (CAN BE AID), University of Western Ontario, London, ON, Canada.,Schulich School of Medicine & Dentistry, Department of Pediatrics, Division of Pharmacology, University of Western Ontario, London, ON, Canada
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8
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Mondal A, Shivangi, Tung P, Wagulde SV, Ramasastry SSV. Annulative Morita-Baylis-Hillman reaction to synthesise chiral dibenzocycloheptanes. Chem Commun (Camb) 2021; 57:9260-9263. [PMID: 34519294 DOI: 10.1039/d1cc02765d] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the first metal-free and organocatalytic strategy to access highly functionalised dibenzocycloheptanes via a phosphine-promoted annulative Morita-Baylis-Hillman (MBH) reaction. The method is manipulated to access to chiral dibenzocycloheptanes as well. This work represents a rare entry for the construction of seven-membered carbocycles via the MBH route. The realisation of several bioactive molecules possessing the dibenzocycloheptane core makes this an attractive strategy.
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Affiliation(s)
- Atanu Mondal
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
| | - Shivangi
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
| | - Pinku Tung
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
| | - Siddhant V Wagulde
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
| | - S S V Ramasastry
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Manauli PO, S. A. S. Nagar, Punjab 140306, India.
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9
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Yi D, Bayer T, Badenhorst CPS, Wu S, Doerr M, Höhne M, Bornscheuer UT. Recent trends in biocatalysis. Chem Soc Rev 2021; 50:8003-8049. [PMID: 34142684 PMCID: PMC8288269 DOI: 10.1039/d0cs01575j] [Citation(s) in RCA: 122] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Indexed: 12/13/2022]
Abstract
Biocatalysis has undergone revolutionary progress in the past century. Benefited by the integration of multidisciplinary technologies, natural enzymatic reactions are constantly being explored. Protein engineering gives birth to robust biocatalysts that are widely used in industrial production. These research achievements have gradually constructed a network containing natural enzymatic synthesis pathways and artificially designed enzymatic cascades. Nowadays, the development of artificial intelligence, automation, and ultra-high-throughput technology provides infinite possibilities for the discovery of novel enzymes, enzymatic mechanisms and enzymatic cascades, and gradually complements the lack of remaining key steps in the pathway design of enzymatic total synthesis. Therefore, the research of biocatalysis is gradually moving towards the era of novel technology integration, intelligent manufacturing and enzymatic total synthesis.
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Affiliation(s)
- Dong Yi
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University GreifswaldFelix-Hausdorff-Str. 4D-17487 GreifswaldGermany
| | - Thomas Bayer
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University GreifswaldFelix-Hausdorff-Str. 4D-17487 GreifswaldGermany
| | - Christoffel P. S. Badenhorst
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University GreifswaldFelix-Hausdorff-Str. 4D-17487 GreifswaldGermany
| | - Shuke Wu
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University GreifswaldFelix-Hausdorff-Str. 4D-17487 GreifswaldGermany
| | - Mark Doerr
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University GreifswaldFelix-Hausdorff-Str. 4D-17487 GreifswaldGermany
| | - Matthias Höhne
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University GreifswaldFelix-Hausdorff-Str. 4D-17487 GreifswaldGermany
| | - Uwe T. Bornscheuer
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University GreifswaldFelix-Hausdorff-Str. 4D-17487 GreifswaldGermany
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10
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Zhu S, Cheng Q, Yang H, Chen X, Han Y, Yan C, Shi Y, Hou H. Three-Component Radical Iodonitrosylative Cyclization of 1,6-Enynes under Metal-Free Conditions. Org Lett 2021; 23:5044-5048. [PMID: 34110172 DOI: 10.1021/acs.orglett.1c01576] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A three-component, metal-free radical cascade iodonitrosylative cyclization reaction was described. The nitroso radical was generated from tert-butyl nitrite and triggered the radical addition/cyclization/iodination/oxidation sequences. A variety of 1,6-enynes were tested and proved to be compatible, delivering various highly functionalized hetero- and all-carbon cycles and nitro and vinyl C-I bonds containing pyrrolidines, tetrahydrofuran, and cyclopentane in moderate to excellent isolated yields.
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Affiliation(s)
- Shaoqun Zhu
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Qi Cheng
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Haibo Yang
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Xiaoyun Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212005, China
| | - Ying Han
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Chaoguo Yan
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Yaocheng Shi
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
| | - Hong Hou
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225009, China
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11
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Nguyen TD, Dang TTT. Cytochrome P450 Enzymes as Key Drivers of Alkaloid Chemical Diversification in Plants. FRONTIERS IN PLANT SCIENCE 2021; 12:682181. [PMID: 34367208 PMCID: PMC8336426 DOI: 10.3389/fpls.2021.682181] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 06/01/2021] [Indexed: 05/30/2023]
Abstract
Plants produce more than 20,000 nitrogen-containing heterocyclic metabolites called alkaloids. These chemicals serve numerous eco-physiological functions in the plants as well as medicines and psychedelic drugs for human for thousands of years, with the anti-cancer agent vinblastine and the painkiller morphine as the best-known examples. Cytochrome P450 monooxygenases (P450s) play a key role in generating the structural variety that underlies this functional diversity of alkaloids. Most alkaloid molecules are heavily oxygenated thanks to P450 enzymes' activities. Moreover, the formation and re-arrangement of alkaloid scaffolds such as ring formation, expansion, and breakage that contribute to their structural diversity and bioactivity are mainly catalyzed by P450s. The fast-expanding genomics and transcriptomics databases of plants have accelerated the investigation of alkaloid metabolism and many players behind the complexity and uniqueness of alkaloid biosynthetic pathways. Here we discuss recent discoveries of P450s involved in the chemical diversification of alkaloids and how these inform our approaches in understanding plant evolution and producing plant-derived drugs.
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12
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Wang X, Lei J, Li G, Meng J, Li C, Li J, Sun K. Synthetic methods for compounds containing fluoro-lactam units. Org Biomol Chem 2020; 18:9762-9774. [PMID: 33237116 DOI: 10.1039/d0ob02168g] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
In recent years, considerable attention has been devoted to the exploration of novel synthetic methods for fluoro-lactams due to their significant biological and pharmaceutical activities. This review summarizes recently established strategies for synthesizing fluorine-substituted lactams, including fluoro-β-lactams, fluoro-γ-lactams, and fluoro-δ-lactams. Additionally, the reaction scopes, limitations, and mechanisms are discussed.
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Affiliation(s)
- Xin Wang
- School of Chemistry and Chemical Engineering, YanTai University, Yantai, 264005, Shandong, P. R. China.
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13
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Zhu S, Yang H, Jiang A, Zhou B, Han Y, Yan C, Shi Y, Hou H. Copper-Catalyzed Bromodifluoroacetylative Cyclization of Enynes. J Org Chem 2020; 85:15667-15675. [PMID: 33176101 DOI: 10.1021/acs.joc.0c02114] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A copper-catalyzed bromodifluoroacetylative cyclization reaction is described. The treatment of bromodifluoroacete derivatives by CuI and B2Pin2 enables difluoroalkyl radical generation and triggers the radical addition/cyclization/bromination sequences. Bromodifluoroacetyl-derived ester, amide, and ketone were compatible and gave various vinyl C-Br bonds containing functionalized heterocycles in good yields.
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Affiliation(s)
- Shaoqun Zhu
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Haibo Yang
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Along Jiang
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Bing Zhou
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Ying Han
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Chaoguo Yan
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Yaocheng Shi
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
| | - Hong Hou
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225009, China
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14
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Stander EA, Papon N, Courdavault V. Puzzling Out the Colchicine Biosynthetic Pathway. ChemMedChem 2020; 16:621-623. [PMID: 33166069 DOI: 10.1002/cmdc.202000633] [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: 08/20/2020] [Indexed: 12/18/2022]
Abstract
Colchicine is among the oldest plant natural products (NPs) still used for treating a broad spectrum of human diseases including gout and other articular inflammation disorders. This molecule is synthesized by several herbaceous species related to the Liliaceae family, but in very low quantities in whole plants. As for many pharmaceutical compounds from plants, the production of colchicine still depends on the natural resource from which it is extracted. From the past decade, metabolic engineering has progressively become a credible alternative for the cost-effective large-scale production of several valuable NPs. In the same vein, Nett and colleagues recently reported an unprecedented advance in the field for colchicine. By using a combination of transcriptomics, metabolomics and pathway reconstitution, Sattely's group deciphered a near-complete biosynthetic pathway to colchicine without prior knowledge of biosynthetic genes. Besides constituting a benchmark for the elucidation of natural product biosynthetic pathways, it opens unprecedented perspectives regarding metabolic engineering of colchicine biosynthesis.
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Affiliation(s)
| | - Nicolas Papon
- Host-Pathogen Interaction Study Group, Université Angers, GEIHP EA 3142, 49933, Angers, France.,Federative Structure of Research, Cellular Interactions and Therapeutic Applications, Université Angers, SFR 4208 ICAT, 49933, Angers, France
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15
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De novo transcriptome assembly and mining of EST-SSR markers in Gloriosa superba. J Genet 2020. [DOI: 10.1007/s12041-020-01235-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Pu LY, Yang F, Chen JQ, Xiong Y, Bin HY, Xie JH, Zhou QL. Enantioselective Total Syntheses of Pentacyclic Homoproaporphine Alkaloids. Org Lett 2020; 22:7526-7530. [PMID: 32937077 DOI: 10.1021/acs.orglett.0c02720] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Herein we report the first enantioselective total syntheses of pentacyclic homoproaporphine alkaloids by means of a route, which includes a tandem retro-oxa-Michael addition and nucleophilic substitution to generate the oxa-benzobicyclco[3.3.1]nonane core structure, a Pictet-Spengler cyclization to construct the fused B and C rings, and sequential Baeyer-Villiger oxidation and pinacol-type cyclization to install the hydroxyl-lactol moiety of D ring. With this unified route, six pentacyclic homoproaporphine alkaloids have been synthesized enantioselectively.
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Affiliation(s)
- Liu-Yang Pu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Fan Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ji-Qiang Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ying Xiong
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Huai-Yu Bin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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17
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Lichman BR. The scaffold-forming steps of plant alkaloid biosynthesis. Nat Prod Rep 2020; 38:103-129. [PMID: 32745157 DOI: 10.1039/d0np00031k] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Alkaloids from plants are characterised by structural diversity and bioactivity, and maintain a privileged position in both modern and traditional medicines. In recent years, there have been significant advances in elucidating the biosynthetic origins of plant alkaloids. In this review, I will describe the progress made in determining the metabolic origins of the so-called true alkaloids, specialised metabolites derived from amino acids containing a nitrogen heterocycle. By identifying key biosynthetic steps that feature in the majority of pathways, I highlight the key roles played by modifications to primary metabolism, iminium reactivity and spontaneous reactions in the molecular and evolutionary origins of these pathways.
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Affiliation(s)
- Benjamin R Lichman
- Centre for Novel Agricultural Products, Department of Biology, University of York, York YO10 5DD, UK.
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18
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19
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Nett RS, Lau W, Sattely ES. Discovery and engineering of colchicine alkaloid biosynthesis. Nature 2020; 584:148-153. [PMID: 32699417 PMCID: PMC7958869 DOI: 10.1038/s41586-020-2546-8] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 06/17/2020] [Indexed: 11/08/2022]
Abstract
Few complete pathways have been established for the biosynthesis of medicinal compounds from plants. Accordingly, many plant-derived therapeutics are isolated directly from medicinal plants or plant cell culture1. A lead example is colchicine, a US Food and Drug Administration (FDA)-approved treatment for inflammatory disorders that is sourced from Colchicum and Gloriosa species2-5. Here we use a combination of transcriptomics, metabolic logic and pathway reconstitution to elucidate a near-complete biosynthetic pathway to colchicine without prior knowledge of biosynthetic genes, a sequenced genome or genetic tools in the native host. We uncovered eight genes from Gloriosa superba for the biosynthesis of N-formyldemecolcine, a colchicine precursor that contains the characteristic tropolone ring and pharmacophore of colchicine6. Notably, we identified a non-canonical cytochrome P450 that catalyses the remarkable ring expansion reaction that is required to produce the distinct carbon scaffold of colchicine. We further used the newly identified genes to engineer a biosynthetic pathway (comprising 16 enzymes in total) to N-formyldemecolcine in Nicotiana benthamiana starting from the amino acids phenylalanine and tyrosine. This study establishes a metabolic route to tropolone-containing colchicine alkaloids and provides insights into the unique chemistry that plants use to generate complex, bioactive metabolites from simple amino acids.
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Affiliation(s)
- Ryan S Nett
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
- Howard Hughes Medical Institute, Stanford, CA, USA
| | - Warren Lau
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
| | - Elizabeth S Sattely
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA.
- Howard Hughes Medical Institute, Stanford, CA, USA.
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20
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Phytochemical Profile and Biological Properties of Colchicum triphyllum (Meadow Saffron). Foods 2020; 9:foods9040457. [PMID: 32276367 PMCID: PMC7231061 DOI: 10.3390/foods9040457] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/03/2020] [Accepted: 04/07/2020] [Indexed: 12/21/2022] Open
Abstract
In this work, the phytochemical profile and the biological properties of Colchicum triphyllum (an unexplored Turkish cultivar belonging to Colchicaceae) have been comprehensively investigated for the first time. Herein, we focused on the evaluation of the in vitro antioxidant and enzyme inhibitory effects of flower, tuber, and leaf extracts, obtained using different extraction methods, namely maceration (both aqueous and methanolic), infusion, and Soxhlet. Besides, the complete phenolic and alkaloid untargeted metabolomic profiling of the different extracts was investigated. In this regard, ultra-high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC-QTOF-MS) allowed us to putatively annotate 285 compounds when considering the different matrix extracts, including mainly alkaloids, flavonoids, lignans, phenolic acids, and tyrosol equivalents. The most abundant polyphenols were flavonoids (119 compounds), while colchicine, demecolcine, and lumicolchicine isomers were some of the most widespread alkaloids in each extract analyzed. In addition, our findings showed that C. triphyllum tuber extracts were a superior source of both total alkaloids and total polyphenols, being on average 2.89 and 10.41 mg/g, respectively. Multivariate statistics following metabolomics allowed for the detection of those compounds most affected by the different extraction methods. Overall, C. triphyllum leaf extracts showed a strong in vitro antioxidant capacity, in terms of cupric reducing antioxidant power (CUPRAC; on average 96.45 mg Trolox Equivalents (TE)/g) and ferric reducing antioxidant power (FRAP) reducing power (on average 66.86 mg TE/g). Interestingly, each C. triphyllum methanolic extract analyzed (i.e., from tuber, leaf, and flower) was active against the tyrosinase in terms of inhibition, recording the higher values for methanolic macerated leaves (i.e., 125.78 mg kojic acid equivalent (KAE)/g). On the other hand, moderate inhibitory activities were observed against AChE and α-amylase. Strong correlations (p < 0.01) were also observed between the phytochemical profiles and the biological activities determined. Therefore, our findings highlighted, for the first time, the potential of C. triphhyllum extracts in food and pharmaceutical applications.
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21
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Hao DC, Xiao PG. Pharmaceutical resource discovery from traditional medicinal plants: Pharmacophylogeny and pharmacophylogenomics. CHINESE HERBAL MEDICINES 2020; 12:104-117. [PMID: 36119793 PMCID: PMC9476761 DOI: 10.1016/j.chmed.2020.03.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 09/11/2019] [Accepted: 09/25/2019] [Indexed: 01/25/2023] Open
Abstract
The worldwide botanical and medicinal culture diversity are astonishing and constitute a Pierian spring for innovative drug R&D. Here, the latest awareness and the perspectives of pharmacophylogeny and pharmacophylogenomics, as well as their expanding utility in botanical drug R&D, are systematically summarized and highlighted. Chemotaxonomy is based on the fact that closely related plants contain the same or similar chemical profiles. Correspondingly, it is better to combine morphological characters, DNA markers and chemical markers in the inference of medicinal plant phylogeny. Medicinal plants within the same phylogenetic groups may have the same or similar therapeutic effects, thus forming the core of pharmacophylogeny. Here we systematically review and comment on the versatile applications of pharmacophylogeny in (1) looking for domestic resources of imported drugs, (2) expanding medicinal plant resources, (3) quality control, identification and expansion of herbal medicines, (4) predicting the chemical constituents or active ingredients of herbal medicine and assisting in the identification and determination of chemical constituents, (5) the search for new drugs sorting out, and (6) summarizing and improving herbal medicine experiences, etc. Such studies should be enhanced within the context of deeper investigations of molecular biology and genomics of traditional medicinal plants, phytometabolites and metabolomics, and ethnomedicine-based pharmacological activity, thus enabling the sustainable conservation and utilization of traditional medicinal resources.
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Affiliation(s)
- Da-cheng Hao
- Biotechnology Institute, School of Environment and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China
- Corresponding author.
| | - Pei-gen Xiao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China
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22
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Davies SG, Fletcher AM, Roberts PM, Thomson JE, Yeung A. N-Acetylcolchinol Methyl Ether (a Natural Product); Suhailamine (a Phantom Natural Product). JOURNAL OF NATURAL PRODUCTS 2019; 82:2659-2663. [PMID: 31486642 DOI: 10.1021/acs.jnatprod.9b00595] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The reported characterization data for the allocolchicinoid alkaloid suhailamine, isolated from Colchicum decaisnei and known to have an erroneous structure, have been reanalyzed. This analysis has led to the current proposal that suhailamine has the same structure as N-acetylcolchinol methyl ether (NCME), an assertion that is supported by comparison with previously reported data for NCME. Suhailamine is therefore a phantom natural product, while NCME represents a naturally occurring allocolchicinoid rather than a purely synthetic entity.
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Affiliation(s)
- Stephen G Davies
- Department of Chemistry, Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , U.K
| | - Ai M Fletcher
- Department of Chemistry, Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , U.K
| | - Paul M Roberts
- Department of Chemistry, Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , U.K
| | - James E Thomson
- Department of Chemistry, Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , U.K
| | - Angus Yeung
- Department of Chemistry, Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , U.K
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23
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Paz WHP, de Oliveira RN, Heerdt G, Angolini CFF, S de Medeiros L, Silva VR, Santos LS, Soares MBP, Bezerra DP, Morgon NH, Almeida JRGS, da Silva FMA, Costa EV, Koolen HHF. Structure-Based Molecular Networking for the Target Discovery of Oxahomoaporphine and 8-Oxohomoaporphine Alkaloids from Duguetia surinamensis. JOURNAL OF NATURAL PRODUCTS 2019; 82:2220-2228. [PMID: 31403289 DOI: 10.1021/acs.jnatprod.9b00287] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In addition to seven known alkaloids (2, 6-11) and 1,2,4-trimethoxybenzene (1), three isoquinoline-derived alkaloids (3-5), namely, duguetinine (3), a compound based on an unprecedented oxahomoaporphine scaffold, and two new 8-oxohomoaporphine alkaloids, duguesuramine (4) and 11-methoxyduguesuramine (5), and a new asarone-derived phenylpropanoid (10) were isolated from the bark of Duguetia surinamensis. The isolation workflow was guided by HPLC-HRESIMS/MS and molecular networking-based analyses. Twenty-four known alkaloids were dereplicated from the D. surinamensis alkaloid-rich fraction network and were assigned by manual MS/MS interpretation. Their cytotoxic potential was evaluated.
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Affiliation(s)
- Weider H P Paz
- Metabolomics and Mass Spectrometry Research Group , Amazonas State University , Manaus 690065-130 , Brazil
- Department of Chemistry , Federal University of Amazonas , Manaus 69077-000 , Brazil
| | - Rodolfo N de Oliveira
- Department of Chemistry , Federal University of Amazonas , Manaus 69077-000 , Brazil
| | - Gabriel Heerdt
- Department of Chemistry , Federal University of Minas Gerais , Belo Horizonte 31270-901 , Brazil
| | - Célio F F Angolini
- Center of Human and Natural Sciences , Federal University of ABC , 09210-580 Santo André , Brazil
| | - Lívia S de Medeiros
- Department of Chemistry , Federal University of São Paulo , 09920-540 Diadema , Brazil
| | - Valdenizia R Silva
- Gonçalo Moniz Institute , Oswaldo Cruz Foundation , Salvador 40296-710 , Brazil
| | - Luciano S Santos
- Gonçalo Moniz Institute , Oswaldo Cruz Foundation , Salvador 40296-710 , Brazil
| | - Milena B P Soares
- Gonçalo Moniz Institute , Oswaldo Cruz Foundation , Salvador 40296-710 , Brazil
| | - Daniel P Bezerra
- Gonçalo Moniz Institute , Oswaldo Cruz Foundation , Salvador 40296-710 , Brazil
| | - Nelson H Morgon
- Institute of Chemistry , University of Campinas , Campinas 13083-970 , Brazil
| | - Jackson R G S Almeida
- Center for Study and Research of Medicinal Plants , Federal University of Vale do São Francisco , Petrolina 56304-205 , Brazil
| | - Felipe M A da Silva
- Department of Chemistry , Federal University of Amazonas , Manaus 69077-000 , Brazil
| | - Emmanoel V Costa
- Department of Chemistry , Federal University of Amazonas , Manaus 69077-000 , Brazil
| | - Hector H F Koolen
- Metabolomics and Mass Spectrometry Research Group , Amazonas State University , Manaus 690065-130 , Brazil
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24
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Sequestration of the plant secondary metabolite, colchicine, by the noctuid moth Polytela gloriosae (Fab.). CHEMOECOLOGY 2019. [DOI: 10.1007/s00049-019-00283-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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25
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Sun K, Wang S, Feng R, Zhang Y, Wang X, Zhang Z, Zhang B. Copper-Catalyzed Radical Selenodifluoromethylation of Alkenes: Access to CF 2-Containing γ-Lactams. Org Lett 2019; 21:2052-2055. [PMID: 30896184 DOI: 10.1021/acs.orglett.9b00240] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, a practical Cu-catalyzed selenodifluoromethylation protocol was developed, using readily available diselenides as the selenium source under external-oxidant-free conditions. Various structurally diverse 4-seleno-substituted α,α-difluoro-γ-lactams were obtained in moderate to excellent yields. Easy scaleup and the potential for product derivatization make this method attractive for the preparation of other valuable fIuorinated γ-lactams. Mechanistic studies suggest that the catalytic system may involve a radical pathway.
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Affiliation(s)
- Kai Sun
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , People's Republic of China
| | - Songnan Wang
- School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , 453007 , People's Republic of China
| | - Ranran Feng
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , People's Republic of China
| | - Yixiao Zhang
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , People's Republic of China
| | - Xin Wang
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , People's Republic of China
| | - Zhiguo Zhang
- School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , 453007 , People's Republic of China
| | - Bing Zhang
- College of Chemistry and Energy , Zhengzhou University , Zhengzhou 450001 , People's Republic of China
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26
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Mai WP, Wang F, Zhang XF, Wang SM, Duan QP, Lu K. Nickel-catalysed radical tandem cyclisation/arylation: practical synthesis of 4-benzyl-3,3-difluoro-γ-lactams. Org Biomol Chem 2019; 16:6491-6498. [PMID: 30155541 DOI: 10.1039/c8ob01389f] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enabled by nickel catalysis, a practical access to the synthesis of 4-benzyl-3,3-difluoro-γ-lactams has been developed via radical tandem cyclisation/arylation. This method features a nickel catalyst, high reaction efficiency, and good substrate tolerance and scope. This protocol proceeds through an intramolecular radical addition to form a primary alkyl radical followed by intermolecular Suzuki-type coupling.
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Affiliation(s)
- Wen-Peng Mai
- School of Materials and Chemical Engineering, Henan University of Engineering, Zhengzhou, 450006, China.
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27
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Sugisawa N, Ohnuma S, Ueda H, Murakami M, Sugiyama K, Ohsawa K, Kano K, Tokuyama H, Doi T, Aoki J, Ishida M, Kudoh K, Naitoh T, Ambudkar SV, Unno M. Novel Potent ABCB1 Modulator, Phenethylisoquinoline Alkaloid, Reverses Multidrug Resistance in Cancer Cell. Mol Pharm 2018; 15:4021-4030. [PMID: 30052463 DOI: 10.1021/acs.molpharmaceut.8b00457] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
ATP-binding cassette (ABC) transporters, which are concerned with the efflux of anticancer drugs from cancer cells, have a pivotal role in multidrug resistance (MDR). In particular, ABCB1 is a well-known ABC transporter that develops MDR in many cancer cells. Some ABCB1 modulators can reverse ABCB1-mediated MDR; however, no modulators with clinical efficacy have been approved. The aim of this study was to identify novel ABCB1 modulators by using high-throughput screening. Of the 5861 compounds stored at Tohoku University, 13 compounds were selected after the primary screening via a fluorescent plate reader-based calcein acetoxymethylester (AM) efflux assay. These 13 compounds were validated in a flow cytometry-based calcein AM efflux assay. Two isoquinoline derivatives were identified as novel ABCB1 inhibitors, one of which was a phenethylisoquinoline alkaloid, (±)-7-benzyloxy-1-(3-benzyloxy-4-methoxyphenethyl)-1,2,3,4-tetrahydro-6-methoxy-2-methylisoquinoline oxalate. The compound, a phenethylisoquinoline alkaloid, was subsequently evaluated in the cytotoxicity assay and shown to significantly enhance the reversal of ABCB1-mediated MDR. In addition, the compound activated the ABCB1-mediated ATP hydrolysis and inhibited the photolabeling of ABCB1 with [125I]-iodoarylazidoprazosin. Furthermore, the compound also reversed the resistance to paclitaxel without increasing the toxicity in the ABCB1-overexpressing KB-V1 cell xenograft model. Overall, we concluded that the newly identified phenethylisoquinoline alkaloid reversed ABCB1-mediated MDR through direct interaction with the substrate-binding site of ABCB1. These findings may contribute to the development of more potent and less toxic ABCB1 modulators, which could overcome ABCB1-mediated MDR.
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Affiliation(s)
- Norihiko Sugisawa
- Department of Surgery , Tohoku University Graduate School of Medicine , Sendai 980-8574 , Japan
| | - Shinobu Ohnuma
- Department of Surgery , Tohoku University Graduate School of Medicine , Sendai 980-8574 , Japan
| | - Hirofumi Ueda
- Graduate School of Pharmaceutical Sciences , Tohoku University , Sendai 980-8578 , Japan
| | - Megumi Murakami
- Department of Surgery , Tohoku University Graduate School of Medicine , Sendai 980-8574 , Japan.,Laboratory of Cell Biology, Center for Cancer Research , National Cancer Institute, NIH , Bethesda , Maryland 20892 , United States
| | - Kyoko Sugiyama
- Graduate School of Pharmaceutical Sciences , Tohoku University , Sendai 980-8578 , Japan
| | - Kosuke Ohsawa
- Graduate School of Pharmaceutical Sciences , Tohoku University , Sendai 980-8578 , Japan
| | - Kuniyuki Kano
- Graduate School of Pharmaceutical Sciences , Tohoku University , Sendai 980-8578 , Japan
| | - Hidetoshi Tokuyama
- Graduate School of Pharmaceutical Sciences , Tohoku University , Sendai 980-8578 , Japan
| | - Takayuki Doi
- Graduate School of Pharmaceutical Sciences , Tohoku University , Sendai 980-8578 , Japan
| | - Junken Aoki
- Graduate School of Pharmaceutical Sciences , Tohoku University , Sendai 980-8578 , Japan
| | - Masaharu Ishida
- Department of Surgery , Tohoku University Graduate School of Medicine , Sendai 980-8574 , Japan
| | - Katsuyoshi Kudoh
- Department of Surgery , Tohoku University Graduate School of Medicine , Sendai 980-8574 , Japan
| | - Takeshi Naitoh
- Department of Surgery , Tohoku University Graduate School of Medicine , Sendai 980-8574 , Japan
| | - Suresh V Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research , National Cancer Institute, NIH , Bethesda , Maryland 20892 , United States
| | - Michiaki Unno
- Department of Surgery , Tohoku University Graduate School of Medicine , Sendai 980-8574 , Japan
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28
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In Silico Studies Applied to Natural Products with Potential Activity Against Alzheimer’s Disease. NEUROMETHODS 2018. [DOI: 10.1007/978-1-4939-7404-7_18] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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29
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Ghawanmeh AA, Chong KF, Sarkar SM, Bakar MA, Othaman R, Khalid RM. Colchicine prodrugs and codrugs: Chemistry and bioactivities. Eur J Med Chem 2017; 144:229-242. [PMID: 29274490 DOI: 10.1016/j.ejmech.2017.12.029] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 12/06/2017] [Accepted: 12/07/2017] [Indexed: 02/06/2023]
Abstract
Antimitotic colchicine possesses low therapeutic index due to high toxicity effects in non-target cell. However, diverse colchicine analogs have been derivatized as intentions for toxicity reduction and structure-activity relationship (SAR) studying. Hybrid system of colchicine structure with nontoxic biofunctional compounds modified further affords a new entity in chemical structure with enhanced activity and selectivity. Moreover, nanocarrier formulation strategies have been used for colchicine delivery. This review paper focuses on colchicine nanoformulation, chemical synthesis of colchicine prodrugs and codrugs with different linkers, highlights linker chemical nature and biological activity of synthesized compounds. Additionally, classification of colchicine prodrugs based on type of conjugates is discussed, as biopolymers prodrugs, fluorescent prodrug, metal complexes prodrug, metal-labile prodrug and bioconjugate prodrug. Finally, we briefly summarized the biological importance of colchicine nanoformulation, colchicine prodrugs and codrugs.
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Affiliation(s)
- Abdullah A Ghawanmeh
- Faculty of Industrial Sciences & Technology, University Malaysia Pahang, Gambang, 26300 Kuantan, Pahang, Malaysia.
| | - Kwok Feng Chong
- Faculty of Industrial Sciences & Technology, University Malaysia Pahang, Gambang, 26300 Kuantan, Pahang, Malaysia
| | - Shaheen M Sarkar
- Faculty of Industrial Sciences & Technology, University Malaysia Pahang, Gambang, 26300 Kuantan, Pahang, Malaysia
| | - Muntaz Abu Bakar
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, University Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
| | - Rizafizah Othaman
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, University Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
| | - Rozida M Khalid
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, University Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
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30
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Misra A, Shukla PK, Kumar B, Chand J, Kushwaha P, Khalid M, Singh Rawat AK, Srivastava S. High-performance Thin-layer Chromatographic-densitometric Quantification and Recovery of Bioactive Compounds for Identification of Elite Chemotypes of Gloriosa superba L. Collected from Sikkim Himalayas (India). Pharmacogn Mag 2017; 13:S700-S705. [PMID: 29142436 PMCID: PMC5669119 DOI: 10.4103/pm.pm_576_16] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/01/2017] [Indexed: 11/04/2022] Open
Abstract
Background Gloriosa superba L. (Colchicaceae) is used as adjuvant therapy in gout for its potential antimitotic activity due to high colchicine(s) alkaloids. Objective This study aimed to develop an easy, cheap, precise, and accurate high-performance thin-layer chromatographic (HPTLC) validated method for simultaneous quantification of bioactive alkaloids (colchicine and gloriosine) in G. superba L. and to identify its elite chemotype(s) from Sikkim Himalayas (India). Methods The HPTLC chromatographic method was developed using mobile phase of chloroform: acetone: diethyl amine (5:4:1) at λmax of 350 nm. Results Five germplasms were collected from targeted region, and on morpho-anatomical inspection, no significant variation was observed among them. Quantification data reveal that content of colchicine (Rf: 0.72) and gloriosine (Rf: 0.61) varies from 0.035%-0.150% to 0.006%-0.032% (dry wt. basis). Linearity of method was obtained in the concentration range of 100-400 ng/spot of marker(s), exhibiting regression coefficient of 0.9987 (colchicine) and 0.9983 (gloriosine) with optimum recovery of 97.79 ± 3.86 and 100.023% ± 0.01%, respectively. Limit of detection and limit of quantification were analyzed, respectively, as 6.245, 18.926 and 8.024, 24.316 (ng). Two germplasms, namely NBG-27 and NBG-26, were found to be elite chemotype of both the markers. Conclusion The developed method is validated in terms of accuracy, recovery, and precision studies as per the ICH guidelines (2005) and can be adopted for the simultaneous quantification of colchicine and gloriosine in phytopharmaceuticals. In addition, this study is relevant to explore the chemotypic variability in metabolite content for commercial and medicinal purposes. SUMMARY An easy, cheap, precise, and accurate high performance thin layer chromatographic (HPTLC) validated method for simultaneous quantification of bioactive alkaloids (colchicine and gloriosine) in G. superba L.Five germplasms were collected from targeted region, and on morpho anatomical inspection, no significant variation was observed among themQuantification data reveal that content of colchicine (Rf: 0.72) and gloriosine (Rf: 0.61) varies from 0.035%-0.150% to 0.006%-0.032% (dry wt. basis)Two germplasms, namely NBG 27 and NBG 26, were found to be elite chemotype of both the markers.
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Affiliation(s)
- Ankita Misra
- Pharmacognosy and Ethnopharmacology Division, CSIR-National Botanical Research Institute, Lucknow, Uttar Pradesh, India.,Department of Pharmacy, Integral University, Lucknow, Uttar Pradesh, India
| | - Pushpendra Kumar Shukla
- Pharmacognosy and Ethnopharmacology Division, CSIR-National Botanical Research Institute, Lucknow, Uttar Pradesh, India
| | - Bhanu Kumar
- Pharmacognosy and Ethnopharmacology Division, CSIR-National Botanical Research Institute, Lucknow, Uttar Pradesh, India
| | - Jai Chand
- Central Instrumentation Facility Division, CSIR-National Botanical Research Institute, Lucknow, Uttar Pradesh, India
| | - Poonam Kushwaha
- Department of Pharmacy, Integral University, Lucknow, Uttar Pradesh, India
| | - Md Khalid
- Department of Pharmacy, Integral University, Lucknow, Uttar Pradesh, India
| | - Ajay Kumar Singh Rawat
- Pharmacognosy and Ethnopharmacology Division, CSIR-National Botanical Research Institute, Lucknow, Uttar Pradesh, India
| | - Sharad Srivastava
- Pharmacognosy and Ethnopharmacology Division, CSIR-National Botanical Research Institute, Lucknow, Uttar Pradesh, India
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31
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Paymode D, Ramana CV. Total Synthesis of (±)-Allocolchicine and Its Analogues Using Co-Catalyzed Alkyne [2 + 2 + 2]-Cyclotrimerization. ACS OMEGA 2017; 2:5591-5600. [PMID: 31457824 PMCID: PMC6644368 DOI: 10.1021/acsomega.7b00980] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 08/24/2017] [Indexed: 06/10/2023]
Abstract
The total synthesis of (±)-allocolchicine has been completed by employing cobalt-catalyzed alkyne [2 + 2 + 2]-cyclotrimerization as the key reaction. The essential diyne has been synthesized from easily available 3,4,5-trimethoxybenzaldehyde following simple chemical transformations. In general, the cycloaddition gave a mixture of C(9) and C(10) isomers thus allowing the synthesis of both allocolchicine and its C(10)-carboxylate. Because this cycloaddition was employed at the penultimate stage, it allowed the synthesis of various analogues having the diverse functionality at C(9) and/or C(10) of ring C.
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Affiliation(s)
- Dinesh
J. Paymode
- Division
of Organic Chemistry, CSIR-National Chemical
Laboratory, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
- Academy
of Scientific and Innovative Research (AcSIR), New Delhi 110020, India
| | - Chepuri V. Ramana
- Division
of Organic Chemistry, CSIR-National Chemical
Laboratory, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
- Academy
of Scientific and Innovative Research (AcSIR), New Delhi 110020, India
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32
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Lv Y, Pu W, Wang Q, Chen Q, Niu J, Zhang Q. Copper-Catalyzed Aminodifluoroalkylation of Alkenes with α-Bromodifluoroacetamides: Synthesis of 3,3-Difluoropyrrolidin-2-ones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700559] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yunhe Lv
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang 455000, People's Republic of China
| | - Weiya Pu
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang 455000, People's Republic of China
| | - Qingqing Wang
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang 455000, People's Republic of China
| | - Qian Chen
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang 455000, People's Republic of China
| | - Jiejie Niu
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang 455000, People's Republic of China
| | - Qian Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Department of Chemistry; Northeast Normal University; Changchun 130024 People's Republic of China
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33
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Lv Y, Pu W, Chen Q, Wang Q, Niu J, Zhang Q. Cu-Catalyzed Aminodifluoroalkylation of Alkynes and α-Bromodifluoroacetamides. J Org Chem 2017; 82:8282-8289. [PMID: 28691826 DOI: 10.1021/acs.joc.7b01313] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The copper-catalyzed highly regioselective aminodifluoroalkylation of alkynes and α-bromodifluoroacetamides was realized for the first time. With this method, 3,3-difluoro-1H-pyrrol-2(3H)-ones were constructed in a single step from various alkynes and α-bromodifluoroacetamides substrates without using any extra oxidant.
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Affiliation(s)
- Yunhe Lv
- College of Chemistry and Chemical Engineering, Anyang Normal University , Anyang 455000, P. R. China
| | - Weiya Pu
- College of Chemistry and Chemical Engineering, Anyang Normal University , Anyang 455000, P. R. China
| | - Qian Chen
- College of Chemistry and Chemical Engineering, Anyang Normal University , Anyang 455000, P. R. China
| | - Qingqing Wang
- College of Chemistry and Chemical Engineering, Anyang Normal University , Anyang 455000, P. R. China
| | - Jiejie Niu
- College of Chemistry and Chemical Engineering, Anyang Normal University , Anyang 455000, P. R. China
| | - Qian Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University , Changchun 130024, P. R. China
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34
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Affiliation(s)
- Ganapathy Sivakumar
- Department of Engineering Technology, College of Technology, University of Houston, Houston, TX, USA
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35
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Shuler SA, Yin G, Krause SB, Vesper CM, Watson DA. Synthesis of Secondary Unsaturated Lactams via an Aza-Heck Reaction. J Am Chem Soc 2016; 138:13830-13833. [PMID: 27754648 DOI: 10.1021/jacs.6b08932] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The preparation of unsaturated secondary lactams via the palladium-catalyzed cyclization of O-phenyl hydroxamates onto a pendent alkene is reported. This method provides rapid access to a broad range of lactams that are widely useful building blocks in alkaloid synthesis. Mechanistic studies support an aza-Heck-type pathway.
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Affiliation(s)
- Scott A Shuler
- Department of Chemistry and Biochemistry, University of Delaware , Newark, Delaware 19716, United States
| | - Guoyin Yin
- Department of Chemistry and Biochemistry, University of Delaware , Newark, Delaware 19716, United States
| | - Sarah B Krause
- Department of Chemistry and Biochemistry, University of Delaware , Newark, Delaware 19716, United States
| | - Caroline M Vesper
- Department of Chemistry and Biochemistry, University of Delaware , Newark, Delaware 19716, United States
| | - Donald A Watson
- Department of Chemistry and Biochemistry, University of Delaware , Newark, Delaware 19716, United States
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36
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Mandhare A, Banerjee P. Therapeutic use of colchicine and its derivatives: a patent review. Expert Opin Ther Pat 2016; 26:1157-1174. [DOI: 10.1080/13543776.2016.1214268] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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37
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More AA, Ramana CV. Alkyne [2 + 2 + 2]-Cyclotrimerization Approach for Synthesis of 6,7-Cyclopropylallocolchicinoids. J Org Chem 2016; 81:3400-6. [DOI: 10.1021/acs.joc.6b00020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Atul A. More
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
| | - Chepuri V. Ramana
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
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38
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Lu D, Wan Y, Kong L, Zhu G. Copper-catalyzed cascade annulation between α-bromocarbonyls and biaryl or (Z)-arylvinylacetylenes enabling a direct synthesis of dibenzocycloheptanes and related compounds. Chem Commun (Camb) 2016; 52:13971-13974. [DOI: 10.1039/c6cc07727g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper-catalyzed cascade annulation of γ,δ-unsaturated α-bromocarbonyls with biaryl or (Z)-arylvinylacetylenes is presented, giving an expeditious access to dibenzocycloheptanes and related compounds in moderate to high yields.
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Affiliation(s)
- Danyang Lu
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Yimei Wan
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Lichun Kong
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Gangguo Zhu
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
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39
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Yadav DB, Taleli L, van der Westhuyzen AE, Fernandes MA, Dragoun M, Prokop A, Schmalz HG, de Koning CB, van Otterlo WAL. Synthesis of Diverse 6-Oxa-allocolchicinoids by a Suzuki-Miyaura Coupling, Acid-Catalyzed Intramolecular Transacetalization Strategy. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500573] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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40
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Kong W, Fuentes N, García-Domínguez A, Merino E, Nevado C. Stereoselective Synthesis of Highly Functionalized Indanes and Dibenzocycloheptadienes through Complex Radical Cascade Reactions. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201409659] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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41
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Kong W, Fuentes N, García-Domínguez A, Merino E, Nevado C. Stereoselective synthesis of highly functionalized indanes and dibenzocycloheptadienes through complex radical cascade reactions. Angew Chem Int Ed Engl 2015; 54:2487-91. [PMID: 25597296 DOI: 10.1002/anie.201409659] [Citation(s) in RCA: 139] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 11/22/2014] [Indexed: 12/23/2022]
Abstract
Two highly stereoselective radical-mediated syntheses of densely functionalized indanes and dibenzocycloheptadienes from ortho-vinyl- and ortho-vinylaryl-substituted N-(arylsulfonyl)-acrylamides, respectively, are presented here. The chemoselective addition of in situ generated radicals (X(·)) onto the styrene moieties triggers an unprecedented reaction cascade, resulting in the formation of one new C-X bond and two new C-C bonds, a formal 1,4-aryl migration, and the extrusion of SO2 to generate an amidyl radical intermediate. This intermediate, upon H abstraction, leads to the observed 5- and 7-membered ring carbocyclic products, respectively, in a highly efficient manner.
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Affiliation(s)
- Wangqing Kong
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich (Switzerland)
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