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Li J, Cai Z, Li XW, Zhuang C. Natural Product-Inspired Targeted Protein Degraders: Advances and Perspectives. J Med Chem 2022; 65:13533-13560. [PMID: 36205223 DOI: 10.1021/acs.jmedchem.2c01223] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Targeted protein degradation (TPD), a promising therapeutic strategy in drug discovery, has great potential to regulate the endogenous degradation of undruggable targets with small molecules. As vital resources that provide diverse structural templates for drug discovery, natural products (NPs) are a rising and robust arsenal for the development of therapeutic TPD. The first proof-of-concept study of proteolysis-targeting chimeras (PROTACs) was a natural polyketide ovalicin-derived degrader; since then, NPs have shown great potential to promote TPD technology. The use of NP-inspired targeted protein degraders has been confirmed to be a promising strategy to treat many human conditions, including cancer, inflammation, and nonalcoholic fatty liver disease. Nevertheless, the development of NP-inspired degraders is challenging, and the field is currently in its infancy. In this review, we summarize the bioactivities and mechanisms of NP-inspired degraders and discuss the associated challenges and future opportunities in this field.
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Affiliation(s)
- Jiao Li
- Clinical Medicine Scientific and Technical Innovation Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.,School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Zhenyu Cai
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Xu-Wen Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China.,Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, Shandong 264117, China
| | - Chunlin Zhuang
- Clinical Medicine Scientific and Technical Innovation Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.,School of Pharmacy, Second Military Medical University, Shanghai 200433, China
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Wei J, Zhou X, Dong M, Yang L, Zhao C, Lu R, Bao G, Hu F. Metabolites and novel compounds with anti-microbial or antiaging activities from Cordyceps fumosorosea. AMB Express 2022; 12:40. [PMID: 35366116 PMCID: PMC8976864 DOI: 10.1186/s13568-022-01379-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 03/15/2022] [Indexed: 11/10/2022] Open
Abstract
High-resolution mass spectrometry (HRMS) and nuclear magnetic resonance (NMR) analysis revealed that there are 20 main components in spores and mycelia extract of Cordyceps fumosorosea strain RCEF 6672 including mannitol (1), uridine (2), adenine (3). N6-(2-hydroxyethyl)-adenosine (4). N6-(2-hydroxyethylacetate)-adenosine (5), fumosoroseanoside A (6) and B (7), ovalicin-4α-alcohol (8), 1-linoleoyl-sn-glycero-3-phosphocholine (9) and its isomer (10), fumosoroseain A (11) and its isomer (12), 5 non-ribosomal peptides (13 to 17) and 3 fatty acids (18 to 20). The compounds 5, 6, 7, 9 and 11 were prepared with preparative and semi-preparative HPLC and identified with 1D and 2D NMR. Compounds 4 and 5 were the first time identified from C. fumosorosea. Compounds 6, 7 and 11 are novel compounds. Compounds 6 and 7 showed antibacterial and antifungal activities, and 11 showed antiaging activity. All the secondary metabolites (4 to 8 and 11 to 17) have strong bioactivities indicating that the metabolites have pharmaceutical development potentiality.
Clarified small molecular metabolites of C. fumosorosea for the first time.
Identified three novel compounds with antimicrobial or antiaging activities. The fungus has development potentiality for rich in bioactive metabolites.
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Jenssen M, Kristoffersen V, Motiram-Corral K, Isaksson J, Rämä T, Andersen JH, Hansen EH, Hansen KØ. Chlovalicin B, a Chlorinated Sesquiterpene Isolated from the Marine Mushroom Digitatispora marina. Molecules 2021; 26:molecules26247560. [PMID: 34946641 PMCID: PMC8703342 DOI: 10.3390/molecules26247560] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/07/2021] [Accepted: 12/09/2021] [Indexed: 11/16/2022] Open
Abstract
As part of our search for bioactive metabolites from understudied marine microorganisms, the new chlorinated metabolite chlovalicin B (1) was isolated from liquid cultures of the marine basidiomycete Digitatispora marina, which was collected and isolated from driftwood found at Vannøya, Norway. The structure of the novel compound was elucidated by spectroscopic methods including 1D and 2D NMR and analysis of HRMS data, revealing that 1 shares its molecular scaffold with a previously isolated compound, chlovalicin. This represents the first compound isolated from the Digitatispora genus, and the first reported fumagillin/ovalicin-like compound isolated from Basidiomycota. Compound 1 was evaluated for antibacterial activities against a panel of five bacteria, its ability to inhibit bacterial biofilm formation, for antifungal activity against Candida albicans, and for cytotoxic activities against malignant and non-malignant human cell lines. Compound 1 displayed weak cytotoxic activity against the human melanoma cell line A2058 (~50% survival at 50 µM). No activity was detected against biofilm formation or C. albicans at 50 µM, or against bacterial growth at 100 µM nor against the production of cytokines by the human acute monocytic leukemia cell line THP-1 at 50 µM.
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Affiliation(s)
- Marte Jenssen
- Marbio, Norwegian College of Fishery Science, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway; (M.J.); (V.K.); (T.R.); (J.H.A.); (E.H.H.)
| | - Venke Kristoffersen
- Marbio, Norwegian College of Fishery Science, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway; (M.J.); (V.K.); (T.R.); (J.H.A.); (E.H.H.)
| | - Kumar Motiram-Corral
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, Bellaterra, E-08193 Barcelona, Spain;
| | - Johan Isaksson
- Department of Chemistry, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway;
| | - Teppo Rämä
- Marbio, Norwegian College of Fishery Science, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway; (M.J.); (V.K.); (T.R.); (J.H.A.); (E.H.H.)
| | - Jeanette H. Andersen
- Marbio, Norwegian College of Fishery Science, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway; (M.J.); (V.K.); (T.R.); (J.H.A.); (E.H.H.)
| | - Espen H. Hansen
- Marbio, Norwegian College of Fishery Science, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway; (M.J.); (V.K.); (T.R.); (J.H.A.); (E.H.H.)
| | - Kine Østnes Hansen
- Marbio, Norwegian College of Fishery Science, UiT—The Arctic University of Norway, N-9037 Tromsø, Norway; (M.J.); (V.K.); (T.R.); (J.H.A.); (E.H.H.)
- Correspondence: ; Tel.: +47-7-764-9272
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Choo KL, Mirabi B, Demmans KZ, Lautens M. Enantioselective Synthesis of Spiro-oxiranes: An Asymmetric Addition/Aldol/Spirocyclization Domino Cascade. Angew Chem Int Ed Engl 2021; 60:21189-21194. [PMID: 34324779 DOI: 10.1002/anie.202105562] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Indexed: 01/11/2023]
Abstract
Enantioenriched spiro-oxiranes bearing three contiguous stereocenters were synthesized using a rhodium-catalyzed asymmetric addition/aldol/spirocyclization sequence. Starting from a linear substrate, the cascade enabled the formation of a spirocyclic framework in a single step. sp2 - and sp-hybridized carbon nucleophiles were found to be competent initiators for this cascade, giving arylated or alkynylated products, respectively. Derivatization studies demonstrated the synthetic versatility of both the epoxide and the alkyne moieties of the products. DFT calculations were used to reconcile spectroscopic discrepancies observed between the solution- and solid-state structures of the products.
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Affiliation(s)
- Ken-Loon Choo
- Davenport Chemical Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S 3H6, Canada
| | - Bijan Mirabi
- Davenport Chemical Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S 3H6, Canada
| | - Karl Z Demmans
- Davenport Chemical Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S 3H6, Canada
| | - Mark Lautens
- Davenport Chemical Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, M5S 3H6, Canada
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Choo K, Mirabi B, Demmans KZ, Lautens M. Enantioselective Synthesis of Spiro‐oxiranes: An Asymmetric Addition/Aldol/Spirocyclization Domino Cascade. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ken‐Loon Choo
- Davenport Chemical Laboratories Department of Chemistry University of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Bijan Mirabi
- Davenport Chemical Laboratories Department of Chemistry University of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Karl Z. Demmans
- Davenport Chemical Laboratories Department of Chemistry University of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Mark Lautens
- Davenport Chemical Laboratories Department of Chemistry University of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
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Jaszczewska‐Adamczak JA, Mlynarski J. Asymmetric Epoxidation of Enones Promoted by Dinuclear Magnesium Catalyst. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Jacek Mlynarski
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
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8
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Romsdahl J, Wang CCC. Recent advances in the genome mining of Aspergillus secondary metabolites (covering 2012-2018). MEDCHEMCOMM 2019; 10:840-866. [PMID: 31303983 PMCID: PMC6590338 DOI: 10.1039/c9md00054b] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/11/2019] [Indexed: 02/01/2023]
Abstract
Secondary metabolites (SMs) produced by filamentous fungi possess diverse bioactivities that make them excellent drug candidates. Whole genome sequencing has revealed that fungi have the capacity to produce a far greater number of SMs than have been isolated, since many of the genes involved in SM biosynthesis are either silent or expressed at very low levels in standard laboratory conditions. There has been significant effort to activate SM biosynthetic genes and link them to their downstream products, as the SMs produced by these "cryptic" pathways offer a promising source for new drug discovery. Further, an understanding of the genes involved in SM biosynthesis facilitates product yield optimization of first-generation molecules and genetic engineering of second-generation analogs. This review covers advances made in genome mining SMs produced by Aspergillus nidulans, Aspergillus fumigatus, Aspergillus niger, and Aspergillus terreus in the past six years (2012-2018). Genetic identification and molecular characterization of SM biosynthetic gene clusters, along with proposed biosynthetic pathways, will be discussed in depth.
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Affiliation(s)
- Jillian Romsdahl
- Department of Pharmacology and Pharmaceutical Sciences , School of Pharmacy , University of Southern California , 1985 Zonal Avenue , Los Angeles , CA 90089 , USA . ; Tel: (323) 442 1670
| | - Clay C C Wang
- Department of Pharmacology and Pharmaceutical Sciences , School of Pharmacy , University of Southern California , 1985 Zonal Avenue , Los Angeles , CA 90089 , USA . ; Tel: (323) 442 1670
- Department of Chemistry , Dornsife College of Letters, Arts, and Sciences , University of Southern California , 3551 Trousdale Pkwy , Los Angeles , CA 90089 , USA
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Lin HC, Tsunematsu Y, Dhingra S, Xu W, Fukutomi M, Chooi YH, Cane D, Calvo AM, Watanabe K, Tang Y. Generation of complexity in fungal terpene biosynthesis: discovery of a multifunctional cytochrome P450 in the fumagillin pathway. J Am Chem Soc 2014; 136:4426-36. [PMID: 24568283 PMCID: PMC3985917 DOI: 10.1021/ja500881e] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Indexed: 01/01/2023]
Abstract
Fumagillin (1), a meroterpenoid from Aspergillus fumigatus, is known for its antiangiogenic activity due to binding to human methionine aminopeptidase 2. 1 has a highly oxygenated structure containing a penta-substituted cyclohexane that is generated by oxidative cleavage of the bicyclic sesquiterpene β-trans-bergamotene. The chemical nature, order, and biochemical mechanism of all the oxygenative tailoring reactions has remained enigmatic despite the identification of the biosynthetic gene cluster and the use of targeted-gene deletion experiments. Here, we report the identification and characterization of three oxygenases from the fumagillin biosynthetic pathway, including a multifunctional cytochrome P450 monooxygenase, a hydroxylating nonheme-iron-dependent dioxygenase, and an ABM family monooxygenase for oxidative cleavage of the polyketide moiety. Most significantly, the P450 monooxygenase is shown to catalyze successive hydroxylation, bicyclic ring-opening, and two epoxidations that generate the sesquiterpenoid core skeleton of 1. We also characterized a truncated polyketide synthase with a ketoreductase function that controls the configuration at C-5 of hydroxylated intermediates.
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Affiliation(s)
- Hsiao-Ching Lin
- Department of Chemical and Biomolecular
Engineering,
and Department of Chemistry
and Biochemistry, University of California, Los Angeles, California 90095
| | - Yuta Tsunematsu
- Department
of Pharmaceutical Sciences, University of
Shizuoka, Shizuoka 422-8526, Japan
| | - Sourabh Dhingra
- Department
of Biological Sciences, Northern Illinois
University, DeKalb, Illinois 60115, United
States
| | - Wei Xu
- Department of Chemical and Biomolecular
Engineering,
and Department of Chemistry
and Biochemistry, University of California, Los Angeles, California 90095
| | - Manami Fukutomi
- Department
of Pharmaceutical Sciences, University of
Shizuoka, Shizuoka 422-8526, Japan
| | - Yit-Heng Chooi
- Research
School of Biology, Australian National University, Canberra, ACT
0200, Australia
| | - David
E. Cane
- Department
of Chemistry, Box H, Brown University, Providence, Rhode Island 02912, United States
| | - Ana M. Calvo
- Department
of Biological Sciences, Northern Illinois
University, DeKalb, Illinois 60115, United
States
| | - Kenji Watanabe
- Department
of Pharmaceutical Sciences, University of
Shizuoka, Shizuoka 422-8526, Japan
| | - Yi Tang
- Department of Chemical and Biomolecular
Engineering,
and Department of Chemistry
and Biochemistry, University of California, Los Angeles, California 90095
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Madden KS, Mosa FA, Whiting A. Non-isoprenoid polyene natural products – structures and synthetic strategies. Org Biomol Chem 2014; 12:7877-99. [DOI: 10.1039/c4ob01337a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yin M, He S, Yu Z, Wu K, Wang L, Sun C. Effect of alumina support on catalytic performance of Pt-Sn/Al2O3 catalysts in one-step synthesis of N-phenylbenzylamine from aniline and benzyl alcohol. CHINESE JOURNAL OF CATALYSIS 2013. [DOI: 10.1016/s1872-2067(12)60608-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Lin HC, Chooi YH, Dhingra S, Xu W, Calvo AM, Tang Y. The fumagillin biosynthetic gene cluster in Aspergillus fumigatus encodes a cryptic terpene cyclase involved in the formation of β-trans-bergamotene. J Am Chem Soc 2013; 135:4616-9. [PMID: 23488861 PMCID: PMC3652892 DOI: 10.1021/ja312503y] [Citation(s) in RCA: 133] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Fumagillin 1 is a meroterpenoid from Aspergillus fumigatus that is known for its anti-angiogenic activity by binding to human methionine aminopeptidase 2. The genetic and molecular basis for biosynthesis of 1 had been an enigma despite the availability of the A. fumigatus genome sequence. Here, we report the identification and verification of the fma gene cluster, followed by characterization of the polyketide synthase and acyltransferase involved in biosynthesis of the dioic acid portion of 1. More significantly, we uncovered the elusive β-trans-bergamotene synthase in A. fumigatus as a membrane-bound terpene cyclase.
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Affiliation(s)
- Hsiao-Ching Lin
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095
| | - Yit-Heng Chooi
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095
| | - Sourabh Dhingra
- Department of Biological Sciences, Northern Illinois University, DeKalb, Illinois 60115
| | - Wei Xu
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095
| | - Ana M. Calvo
- Department of Biological Sciences, Northern Illinois University, DeKalb, Illinois 60115
| | - Yi Tang
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095
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Li F, Sun C, Shan H, Zou X, Xie J. From Regioselective Condensation to Regioselective N-Alkylation: A Novel and Environmentally Benign Strategy for the Synthesis ofN,N′-Alkyl Aryl Ureas andN,N′-Dialkyl Ureas. ChemCatChem 2013. [DOI: 10.1002/cctc.201200648] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Zbidah M, Lupescu A, Jilani K, Lang F. Stimulation of suicidal erythrocyte death by fumagillin. Basic Clin Pharmacol Toxicol 2012; 112:346-51. [PMID: 23121865 DOI: 10.1111/bcpt.12033] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Accepted: 10/24/2012] [Indexed: 01/30/2023]
Abstract
Fumagillin, a cyclohexane isolated from fungus Aspergillus fumigatus, has anti-infective and anti-cancer potency. Fumagillin is at least partially effective by inducing suicidal death or apoptosis. In analogy to apoptosis of nucleated cells, eryptosis is the suicidal death of erythrocytes characterized by cell shrinkage and cell membrane scrambling with phosphatidylserine exposure at the cell surface. Stimulators of eryptosis include increase of cytosolic Ca(2+)-activity ([Ca(2+)](i)) and ceramide. The present study explored whether fumagillin (5-100 μM) could stimulate eryptosis. To this end, [Ca(2+)](i) was estimated from Fluo3 fluorescence, ceramide by utilizing specific antibodies, cell volume from forward scatter, phosphatidylserine exposure from annexin V binding and haemolysis from haemoglobin release. As a result, a 48-hr exposure to fumagillin significantly increased [Ca(2+)](i) (≥10 μM), enhanced ceramide abundance (100 μM), triggered annexin V binding (≥10 μM) and decreased forward scatter (≥10 μM). Fumagillin exposure was followed by slight but significant increase of haemolysis. Removal of extracellular Ca(2+) significantly blunted but did not abolish the effect of fumagillin (100 μM) on annexin V binding. The present observations disclose a novel effect of fumagillin, that is, stimulation of eryptosis, paralleled by Ca(2+) entry, ceramide formation, phosphatidylserine exposure and decrease of cell volume.
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Affiliation(s)
- Mohanad Zbidah
- Department of Physiology, University of Tuebingen, Tuebingen, Germany
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Yu X, Jiang L, Li Q, Xie Y, Xu Q. Palladium-CatalyzedN-Alkylation of Amides and Amines with Alcohols Employing the Aerobic Relay Race Methodology. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201200462] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Funktionalisierung von C-H-Bindungen: neue Synthesemethoden für Naturstoffe und Pharmazeutika. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201666] [Citation(s) in RCA: 756] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Yamaguchi J, Yamaguchi AD, Itami K. CH Bond Functionalization: Emerging Synthetic Tools for Natural Products and Pharmaceuticals. Angew Chem Int Ed Engl 2012; 51:8960-9009. [DOI: 10.1002/anie.201201666] [Citation(s) in RCA: 2423] [Impact Index Per Article: 201.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Indexed: 01/04/2023]
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Yuan K, Jiang F, Sahli Z, Achard M, Roisnel T, Bruneau C. Iridium-Catalyzed Oxidant-Free Dehydrogenative CH Bond Functionalization: Selective Preparation of N-Arylpiperidines through Tandem Hydrogen Transfers. Angew Chem Int Ed Engl 2012; 51:8876-80. [DOI: 10.1002/anie.201204582] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Indexed: 11/06/2022]
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Yuan K, Jiang F, Sahli Z, Achard M, Roisnel T, Bruneau C. Iridium-Catalyzed Oxidant-Free Dehydrogenative CH Bond Functionalization: Selective Preparation of N-Arylpiperidines through Tandem Hydrogen Transfers. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204582] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Herndon JW. The chemistry of the carbon–transition metal double and triple bond: Annual survey covering the year 2010. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.02.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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24
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Monopoli A, Cotugno P, Cortese M, Calvano CD, Ciminale F, Nacci A. Selective N-Alkylation of Arylamines with Alkyl Chloride in Ionic Liquids: Scope and Applications. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200202] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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He L, Qian Y, Ding RS, Liu YM, He HY, Fan KN, Cao Y. Highly efficient heterogeneous gold-catalyzed direct synthesis of tertiary and secondary amines from alcohols and urea. CHEMSUSCHEM 2012; 5:621-624. [PMID: 22415929 DOI: 10.1002/cssc.201100581] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Revised: 11/01/2011] [Indexed: 05/31/2023]
Abstract
Urea, the white gold: The efficient synthesis of tertiary and secondary amines is achieved by heterogeneous gold-catalyzed direct amination of stoichiometric alcohols with urea in good to excellent yields. Via a hydrogen autotransfer pathway, the reactions of primary alcohols with urea give tertiary amines exclusively, while secondary alcohols selectively afford secondary amines.
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Affiliation(s)
- Lin He
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, PR China
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Schöberl C, Jäger V. 3- and 4-Uloses Derived from N-Acetyl-D-glucosamine: A Unique Pair of Complementary Organocatalysts for Asymmetric Epoxidation of Alkenes. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100735] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Balthaser BR, Maloney MC, Beeler AB, Porco JA, Snyder JK. Remodelling of the natural product fumagillol employing a reaction discovery approach. Nat Chem 2012; 3:969-73. [PMID: 22213919 PMCID: PMC3254213 DOI: 10.1038/nchem.1178] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In the search for new biologically active molecules, diversity-oriented synthetic strategies break through the limitation of traditional library synthesis by sampling new chemical space. Many natural products can be regarded as intriguing starting points for diversity-oriented synthesis, wherein stereochemically rich core structures may be reorganized into chemotypes that are distinctly different from the parent structure. Ideally, to be suited to library applications, such transformations should be general and involve few steps. With this objective in mind, the highly oxygenated natural product fumagillol has been successfully remodelled in several ways using a reaction-discovery-based approach. In reactions with amines, excellent regiocontrol in a bis-epoxide opening/cyclization sequence can be obtained by size-dependent interaction of an appropriate catalyst with the parent molecule, forming either perhydroisoindole or perhydroisoquinoline products. Perhydroisoindoles can be further remodelled by cascade processes to afford either morpholinone or bridged 4,1-benzoxazepine-containing structures.
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Affiliation(s)
- Bradley R Balthaser
- Department of Chemistry, Center for Chemical Methodology and Library Development, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
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Rigoli JW, Moyer SA, Pearce SD, Schomaker JM. α,β-Unsaturated imines via Ru-catalyzed coupling of allylic alcohols and amines. Org Biomol Chem 2012; 10:1746-9. [DOI: 10.1039/c2ob06921k] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Shimizu KI, Ohshima K, Tai Y, Tamura M, Satsuma A. Size- and support-dependent selective amine cross-coupling with platinum nanocluster catalysts. Catal Sci Technol 2012. [DOI: 10.1039/c2cy00476c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Cui X, Zhang C, Shi F, Deng Y. Au/Ag–Mo nano-rods catalyzed reductive coupling of nitrobenzenes and alcohols using glycerol as the hydrogen source. Chem Commun (Camb) 2012; 48:9391-3. [DOI: 10.1039/c2cc34178f] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bähn S, Imm S, Neubert L, Zhang M, Neumann H, Beller M. The Catalytic Amination of Alcohols. ChemCatChem 2011. [DOI: 10.1002/cctc.201100255] [Citation(s) in RCA: 584] [Impact Index Per Article: 44.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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He W, Wang L, Sun C, Wu K, He S, Chen J, Wu P, Yu Z. Pt-Sn/γ-Al2O3-catalyzed highly efficient direct synthesis of secondary and tertiary amines and imines. Chemistry 2011; 17:13308-17. [PMID: 21997929 DOI: 10.1002/chem.201101725] [Citation(s) in RCA: 151] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Indexed: 11/09/2022]
Abstract
Versatile syntheses of secondary and tertiary amines by highly efficient direct N-alkylation of primary and secondary amines with alcohols or by deaminative self-coupling of primary amines have been successfully realized by means of a heterogeneous bimetallic Pt-Sn/γ-Al(2)O(3) catalyst (0.5 wt % Pt, Pt/Sn molar ratio=1:3) through a borrowing-hydrogen strategy. In the presence of oxygen, imines were also efficiently prepared from the tandem reactions of amines with alcohols or between two primary amines. The proposed mechanism reveals that an alcohol or amine substrate is initially dehydrogenated to an aldehyde/ketone or NH-imine with concomitant formation of a [PtSn] hydride. Condensation of the aldehyde/ketone species or deamination of the NH-imine intermediate with another molecule of amine forms an N-substituted imine which is then reduced to a new amine product by the in-situ generated [PtSn] hydride under a nitrogen atmosphere or remains unchanged as the final product under an oxygen atmosphere. The Pt-Sn/γ-Al(2)O(3) catalyst can be easily recycled without Pt metal leaching and has exhibited very high catalytic activity toward a wide range of amine and alcohol substrates, which suggests potential for application in the direct production of secondary and tertiary amines and N-substituted imines.
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Affiliation(s)
- Wei He
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, PR China
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De Luca L, Porcheddu A. Microwave-Assisted Synthesis of Polysubstituted Benzimidazoles by Heterogeneous Pd-Catalyzed Oxidative C-H Activation of Tertiary Amines. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101001] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Park JH, Kim SM, Chung YK. Rh-Catalyzed Reductive Cyclization of Enynes Using Ethanol as a Source of Hydrogen. Chemistry 2011; 17:10852-6. [DOI: 10.1002/chem.201101745] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Indexed: 11/07/2022]
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Luo J, Wu M, Xiao F, Deng G. Ruthenium-catalyzed direct amination of alcohols with tertiary amines. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.03.084] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Shimizu KI, Shimura K, Nishimura M, Satsuma A. Silver cluster-promoted heterogeneous copper catalyst for N-alkylation of amines with alcohols. RSC Adv 2011. [DOI: 10.1039/c1ra00560j] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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