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Ramos A, Griffin ED, Ho KH, Singh J, Jones SA, Walter SN, Castle SL. Synthesis of the Indolizidine Core of Virosinine A via a Microwave-Promoted Cascade Cyclization Involving Iminyl Radicals. Org Lett 2024. [PMID: 38197784 DOI: 10.1021/acs.orglett.3c03852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
The indolizidine core of virosinine A was synthesized by means of a microwave-promoted cascade reaction featuring 5-exo-trig iminyl radical cyclization, thiyl radical elimination, and intramolecular imine alkylation. The resulting bicyclic iminium ion underwent stereoselective reduction by Red-Al to deliver the target compound. DFT calculations suggested that both the radical cyclization and thiyl radical elimination steps are reversible at high reaction temperatures.
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Affiliation(s)
- Alexander Ramos
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Elias D Griffin
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Kai-Hang Ho
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Jatinder Singh
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Spencer A Jones
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Steven N Walter
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Steven L Castle
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
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2
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Jiang G, Huang C, Harrison W, Li H, Zhou M, Zhao H. Ene Reductase Enabled Intramolecular β-C-H Functionalization of Substituted Cyclohexanones for Efficient Synthesis of Bridged Bicyclic Nitrogen Scaffolds. Angew Chem Int Ed Engl 2023; 62:e202302125. [PMID: 37002909 PMCID: PMC10222568 DOI: 10.1002/anie.202302125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 03/24/2023] [Accepted: 03/31/2023] [Indexed: 04/03/2023]
Abstract
Herein we report that ene reductases (EREDs) can facilitate an unprecedented intramolecular β-C-H functionalization reaction for the synthesis of bridged bicyclic nitrogen heterocycles containing the 6-azabicyclo[3.2.1]octane scaffold. To streamline the synthesis of these privileged motifs, we developed a gram-scale one-pot chemoenzymatic cascade by combining iridium photocatalysis with EREDs, using readily available N-phenylglycines and cyclohexenones that can be obtained from biomass. Further derivatization using enzymatic or chemical methods can convert 6-azabicyclo[3.2.1]octan-3-one into 6-azabicyclo[3.2.1]octan-3α-ols, which can be potentially utilized for the synthesis of azaprophen and its analogues for drug discovery. Mechanistic studies revealed the reaction requires oxygen, presumably to produce oxidized flavin, which can selectively dehydrogenate the 3-substituted cyclohexanone derivatives to form the α,β-unsaturated ketone, which subsequently undergoes spontaneous intramolecular aza-Michael addition under basic conditions.
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Affiliation(s)
- Guangde Jiang
- Department of Chemical and Biomolecular Engineering, Center for Advanced Bioenergy and Bioproducts Innovation, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Chunshuai Huang
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Wesley Harrison
- Department of Chemical and Biomolecular Engineering, Center for Advanced Bioenergy and Bioproducts Innovation, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Hongxiang Li
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Megan Zhou
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Huimin Zhao
- Department of Chemical and Biomolecular Engineering, Center for Advanced Bioenergy and Bioproducts Innovation, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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3
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Kang G, Park S, Han S. Synthesis of High-Order and High-Oxidation State Securinega Alkaloids. Acc Chem Res 2023; 56:140-156. [PMID: 36594722 DOI: 10.1021/acs.accounts.2c00719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Securinega alkaloids, composed of more than 100 members characterized by the compact tetracyclic scaffold, have fascinated the synthetic community with their structural diversity and notable bioactivities. On the basis of the structural phenotype, oligomerizations and oxidations are major biosynthetic diversification modes of the basic Securinega framework. Despite the rich history of synthesis of basic monomeric Securinega alkaloids, the synthesis of oligomeric Securinega alkaloids, as well as oxidized derivatives, has remained relatively unexplored because of their extra structural complexity. In the first half of this Account, our synthetic studies toward high-order Securinega alkaloids are described. We aimed to establish a reliable synthetic method to form C14-C15' and C12-C15' bonds, which are prevalent connection modes between monomers. During our total synthesis of flueggenine C (9), we have invented an accelerated Rauhut-Currier reaction capable of forming the C14-C15' bond stereoselectively. Installation of the nucleophilic functionality to the Michael acceptor, which ushers the C-C bond forming conjugate addition to follow the intramolecular pathway, was the key to success. The C12-C15' linkage, which was inaccessible via an accelerated Rauhut-Currier reaction, was established by devising a complementary cross-coupling/conjugate reduction-based dimerization strategy that enabled the total synthesis of flueggenines D (11) and I (14). In this approach, the C12-C15' linkage was established via a Stille cross-coupling, and the stereochemistry of the C15' position was controlled during the following conjugate reduction step. In the later half of this Account, our achievements in the field of high-oxidation state Securinega alkaloids synthesis are depicted. We have developed oxidative transformations at the N1 and C2-C4 positions, where the biosynthetic oxidation event occurs most frequently. The discovery of a VO(acac)2-mediated regioselective Polonovski reaction allowed us to access the key 2,3-dehydroallosecurinine (112). Divergent synthesis of secu'amamine A (62) and fluvirosaones A (60) and B (61) was accomplished by exploiting the versatile reactivities of the C2/C3 enamine moiety in 112. We have also employed a fragment-coupling strategy between menisdaurilide and piperidine units, which allowed the installation of various oxygen-containing functionality on the piperidine ring. Combined with the late-stage, light-mediated epimerization and well-orchestrated oxidative modifications, collective total synthesis of seven C4-oxygenated securinine-type natural products was achieved. Lastly, the synthesis of flueggeacosine B (70) via two synthetic routes from allosecurinine (103) was illustrated. The first-generation synthesis (seven overall steps) employing Pd-catalyzed cross-coupling between stannane and thioester to form the key C3-C15' bond enabled the structural revision of the natural product. In the second-generation synthesis, we have invented visible-light-mediated, Cu-catalyzed cross-dehydrogenative coupling (CDC) between an aldehyde and electron-deficient olefin, which streamlined the synthetic pathway into four overall steps. Organisms frequently utilize dimerization (oligomerization) and oxidations during the biosynthesis as a means to expand the chemical space of their secondary metabolites. Therefore, methods and strategies for dimerizations and oxidations that we have developed using the Securinega alkaloids as a platform would be broadly applicable to other alkaloids. It is our sincere hope that lessons we have learned during our synthetic journey would benefit other chemists working on organic synthesis.
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Affiliation(s)
- Gyumin Kang
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sangbin Park
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sunkyu Han
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
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4
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Collective total synthesis of C4-oxygenated securinine-type alkaloids via stereocontrolled diversifications on the piperidine core. Nat Commun 2022; 13:5149. [PMID: 36056139 PMCID: PMC9440219 DOI: 10.1038/s41467-022-32902-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 08/23/2022] [Indexed: 11/08/2022] Open
Abstract
Securinega alkaloids have fascinated the synthetic chemical community for over six decades. Historically, major research foci in securinega alkaloid synthesis have been on the efficient construction of the fused tetracyclic framework that bears a butenolide moiety and tertiary amine-based heterocycles. These "basic" securinega alkaloids have evolved to undergo biosynthetic oxidative diversifications, especially on the piperidine core. However, a general synthetic solution to access these high-oxidation state securinega alkaloids is lacking. In this study, we have completed the total synthesis of various C4-oxygenated securinine-type alkaloids including securingines A, C, D, securitinine, secu'amamine D, phyllanthine, and 4-epi-phyllanthine. Our synthetic strategy features stereocontrolled oxidation, rearrangement, and epimerization at N1 and C2-C4 positions of the piperidine core within (neo)securinane scaffolds. Our discoveries provide a fundamental synthetic solution to all known securinine-type natural products with various oxidative and stereochemical variations around the central piperidine ring.
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5
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Kang G, Park S, Han S. The Chemistry of High‐Oxidation State Securinega Alkaloids. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001610] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gyumin Kang
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141, Republic of Korea E-mail: synthesis.kaist.ac.kr
| | - Sangbin Park
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141, Republic of Korea E-mail: synthesis.kaist.ac.kr
| | - Sunkyu Han
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141, Republic of Korea E-mail: synthesis.kaist.ac.kr
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6
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Yu L, Wang M, Yang Y, Xu F, Zhang X, Xie F, Gao L, Li X. Predicting therapeutic drugs for hepatocellular carcinoma based on tissue-specific pathways. PLoS Comput Biol 2021; 17:e1008696. [PMID: 33561121 PMCID: PMC7920387 DOI: 10.1371/journal.pcbi.1008696] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 03/01/2021] [Accepted: 01/12/2021] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is a significant health problem worldwide with poor prognosis. Drug repositioning represents a profitable strategy to accelerate drug discovery in the treatment of HCC. In this study, we developed a new approach for predicting therapeutic drugs for HCC based on tissue-specific pathways and identified three newly predicted drugs that are likely to be therapeutic drugs for the treatment of HCC. We validated these predicted drugs by analyzing their overlapping drug indications reported in PubMed literature. By using the cancer cell line data in the database, we constructed a Connectivity Map (CMap) profile similarity analysis and KEGG enrichment analysis on their related genes. By experimental validation, we found securinine and ajmaline significantly inhibited cell viability of HCC cells and induced apoptosis. Among them, securinine has lower toxicity to normal liver cell line, which is worthy of further research. Our results suggested that the proposed approach was effective and accurate for discovering novel therapeutic options for HCC. This method also could be used to indicate unmarked drug-disease associations in the Comparative Toxicogenomics Database. Meanwhile, our method could also be applied to predict the potential drugs for other types of tumors by changing the database.
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Affiliation(s)
- Liang Yu
- School of Computer Science and Technology, Xidian University, Shaanxi, China
| | - Meng Wang
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Advanced Medical Research Institute, Shandong University, 72, Jimo District, Qingdao, Shandong, China
| | - Yang Yang
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Advanced Medical Research Institute, Shandong University, 72, Jimo District, Qingdao, Shandong, China
| | - Fengdan Xu
- School of Computer Science and Technology, Xidian University, Shaanxi, China
| | - Xu Zhang
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Advanced Medical Research Institute, Shandong University, 72, Jimo District, Qingdao, Shandong, China
| | - Fei Xie
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Advanced Medical Research Institute, Shandong University, 72, Jimo District, Qingdao, Shandong, China
| | - Lin Gao
- School of Computer Science and Technology, Xidian University, Shaanxi, China
| | - Xiangzhi Li
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Advanced Medical Research Institute, Shandong University, 72, Jimo District, Qingdao, Shandong, China
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7
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Bonjoch J, Diaba F. Radical Reactions in Alkaloid Synthesis: A Perspective from Carbon Radical Precursors. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000391] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Josep Bonjoch
- Laboratori de Química Orgànica Facultat de Farmàcia, IBUB Universitat de Barcelona Av. Joan XXIII s/n 08028 Barcelona Spain
| | - Faiza Diaba
- Laboratori de Química Orgànica Facultat de Farmàcia, IBUB Universitat de Barcelona Av. Joan XXIII s/n 08028 Barcelona Spain
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8
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Fesenko AA, Yankov AN, Shutalev AD. A general and convenient synthesis of 4-(tosylmethyl)semicarbazones and their use in amidoalkylation of hydrogen, heteroatom, and carbon nucleophiles. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130527] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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9
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Brar A, Unruh DK, Ling N, Krempner C. BPh 3-Catalyzed [2+3] Cycloaddition of Ph 3PCCO with Aldonitrones: Access to 5-Isoxazolidinones with Exocyclic Phosphonium Ylide Moieties. Org Lett 2019; 21:6305-6309. [PMID: 31356091 DOI: 10.1021/acs.orglett.9b02192] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A method for the generation of 5-isoxazolidinones with exocyclic phosphonium ylide functionalities via [2+3] cycloaddition of Ph3PCCO and aldonitrones has been developed and applied in the synthesis of 4-alkylidene-5-isoxazolidinones via Wittig olefination. The reaction proceeds by BPh3 catalysis under mild conditions and with a broad substrate scope. A reaction pathway involving the activation of the aldonitrone via interactions with the Lewis acid BPh3 is proposed.
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Affiliation(s)
- Amandeep Brar
- Department of Chemistry & Biochemistry , Texas Tech University , Box 41061, Lubbock , Texas 79409-1061 , United States
| | - Daniel K Unruh
- Department of Chemistry & Biochemistry , Texas Tech University , Box 41061, Lubbock , Texas 79409-1061 , United States
| | - Natalie Ling
- Department of Chemistry & Biochemistry , Texas Tech University , Box 41061, Lubbock , Texas 79409-1061 , United States
| | - Clemens Krempner
- Department of Chemistry & Biochemistry , Texas Tech University , Box 41061, Lubbock , Texas 79409-1061 , United States
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10
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Antien K, Lacambra A, Cossío FP, Massip S, Deffieux D, Pouységu L, Peixoto PA, Quideau S. Bio‐inspired Total Synthesis of Twelve
Securinega
Alkaloids: Structural Reassignments of (+)‐Virosine B and (−)‐Episecurinol A. Chemistry 2019; 25:11574-11580. [DOI: 10.1002/chem.201903122] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 07/19/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Kevin Antien
- Univ. Bordeaux, ISM (CNRS-UMR 5255) 351 cours de la Libération 33405 Talence Cedex France
| | - Aitor Lacambra
- Univ. Bordeaux, ISM (CNRS-UMR 5255) 351 cours de la Libération 33405 Talence Cedex France
- Departamento de Química Orgánica IUniversidad del País Vasco Avda. Tolosa 72, Edificio Korta 20018 San Sebastián Spain
| | - Fernando P. Cossío
- Departamento de Química Orgánica IUniversidad del País Vasco Avda. Tolosa 72, Edificio Korta 20018 San Sebastián Spain
| | - Stéphane Massip
- Univ. BordeauxInstitut Européen de Chimie et Biologie (CNRS-UMS 3033) 2 rue Robert Escarpit 33607 Pessac Cedex France
| | - Denis Deffieux
- Univ. Bordeaux, ISM (CNRS-UMR 5255) 351 cours de la Libération 33405 Talence Cedex France
| | - Laurent Pouységu
- Univ. Bordeaux, ISM (CNRS-UMR 5255) 351 cours de la Libération 33405 Talence Cedex France
| | - Philippe A. Peixoto
- Univ. Bordeaux, ISM (CNRS-UMR 5255) 351 cours de la Libération 33405 Talence Cedex France
| | - Stéphane Quideau
- Univ. Bordeaux, ISM (CNRS-UMR 5255) 351 cours de la Libération 33405 Talence Cedex France
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11
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Gan LS, Yue JM. Alkaloids from the Root of Flueggea Virosa. Nat Prod Commun 2019. [DOI: 10.1177/1934578x0600101002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Nine alkaloids, including one new norsecurinine derivative norsecurinic acid (1), and two artificial alkaloid products, 15β-butoxy-14,15-dihydronorsecurinine (2) and 15α-butoxy-14,15-dihydronorsecurinine (3), were isolated from the root of Flueggea virosa. Their structures and configurations were elucidated by chemical and spectroscopic methods, especially 2D NMR techniques.
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Affiliation(s)
- Li-She Gan
- State Key Laboratory of Drug Research, Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chongzhi Road, Zhangjiang Hi-Tech Park, Shanghai, P. R. China 201203
| | - Jian-Min Yue
- State Key Laboratory of Drug Research, Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chongzhi Road, Zhangjiang Hi-Tech Park, Shanghai, P. R. China 201203
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12
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Brar A, Unruh DK, Aquino AJ, Krempner C. Lewis acid base chemistry of Bestmann's ylide, Ph3PCCO, and its bulkier analogue, (cyclohexyl)3PCCO. Chem Commun (Camb) 2019; 55:3513-3516. [DOI: 10.1039/c9cc01239g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The phosphoranylideneketenes R3PCCO (R = phenyl, cyclohexyl) and their Lewis acid base adducts were synthesized and structurally as well as spectroscopically characterized.
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Affiliation(s)
- Amandeep Brar
- Department of Chemistry and Biochemistry
- Texas Tech University
- Memorial Dr & Boston
- Lubbock
- USA
| | - Daniel K. Unruh
- Department of Chemistry and Biochemistry
- Texas Tech University
- Memorial Dr & Boston
- Lubbock
- USA
| | - Adelia J. Aquino
- School of Pharmaceutical Science and Technology
- Tianjin University
- 300072 Tianjin
- People's Republic of China
| | - Clemens Krempner
- Department of Chemistry and Biochemistry
- Texas Tech University
- Memorial Dr & Boston
- Lubbock
- USA
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13
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Yu S, de Bruijn HM, Svatunek D, Hamlin TA, Bickelhaupt FM. Factors Controlling the Diels-Alder Reactivity of Hetero-1,3-Butadienes. ChemistryOpen 2018; 7:995-1004. [PMID: 30524925 PMCID: PMC6276106 DOI: 10.1002/open.201800193] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Indexed: 12/29/2022] Open
Abstract
We have quantum chemically explored the Diels-Alder reactivities of a systematic series of hetero-1,3-butadienes with ethylene by using density functional theory at the BP86/TZ2P level. Activation strain analyses provided physical insight into the factors controlling the relative cycloaddition reactivity of aza- and oxa-1,3-butadienes. We find that dienes with a terminal heteroatom, such as 2-propen-1-imine (NCCC) or acrolein (OCCC), are less reactive than the archetypal 1,3-butadiene (CCCC), primarily owing to weaker orbital interactions between the more electronegative heteroatoms with ethylene. Thus, the addition of a second heteroatom at the other terminal position (NCCN and OCCO) further reduces the reactivity. However, the introduction of a nitrogen atom in the backbone (CNCC) leads to enhanced reactivity, owing to less Pauli repulsion resulting from polarization of the diene HOMO in CNCC towards the nitrogen atom and away from the terminal carbon atom. The Diels-Alder reactions of ethenyl-diazene (NNCC) and 1,3-diaza-butadiene (NCNC), which contain heteroatoms at both the terminal and backbone positions, are much more reactive due to less activation strain compared to CCCC.
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Affiliation(s)
- Song Yu
- Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - Hans M de Bruijn
- Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Leiden Institute of Chemistry, Gorlaeus Laboratories Leiden University P.O. Box 9502 2300 RA Leiden The Netherlands
| | - Dennis Svatunek
- Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Institut für Angewandte Synthesechemie Technische Universität Wien (TU Wien) Getreidemarkt 9 1060 Vienna Austria
| | - Trevor A Hamlin
- Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - F Matthias Bickelhaupt
- Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Institute for Molecules and Materials (IMM) Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
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14
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Rhodium-Catalyzed Enantioselective Formal [4+1] Cycloaddition of Diazooxindoles and the Danishefsky Diene. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201700639] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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15
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Iwanejko J, Wojaczyńska E. Cyclic imines – preparation and application in synthesis. Org Biomol Chem 2018; 16:7296-7314. [DOI: 10.1039/c8ob01874j] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Cyclic imines, available from various nitrogen-containing reactants, serve as versatile synthetic intermediates for biologically active compounds.
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Affiliation(s)
- Jakub Iwanejko
- Department of Organic Chemistry
- Wrocław University of Science and Technology
- 50 370 Wrocław
- Poland
| | - Elżbieta Wojaczyńska
- Department of Organic Chemistry
- Wrocław University of Science and Technology
- 50 370 Wrocław
- Poland
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16
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Wehlauch R, Gademann K. Securinega
Alkaloids: Complex Structures, Potent Bioactivities, and Efficient Total Syntheses. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700142] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Robin Wehlauch
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Karl Gademann
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
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17
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18
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Yeh MCP, Chang YM, Lin HH. Stereoselective Synthesis of 7-(E
)-Arylidene-2-chloro-6-azabicyclo[3.2.1]octanes via
Aluminum Chloride-Promoted Cyclization/Chlorination of Six-Membered Ring 3-Enynamides. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700271] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ming-Chang P. Yeh
- Department of Chemistry; National Taiwan Normal University; 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Yi-Mei Chang
- Department of Chemistry; National Taiwan Normal University; 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Hsin-Hui Lin
- Department of Chemistry; National Taiwan Normal University; 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
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19
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Cao MH, Green NJ, Xu SZ. Application of the aza-Diels–Alder reaction in the synthesis of natural products. Org Biomol Chem 2017; 15:3105-3129. [DOI: 10.1039/c6ob02761j] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Diels–Alder reaction that involves a nitrogen atom in the diene or dienophile is termed the aza-Diels–Alder reaction.
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Affiliation(s)
- Min-Hui Cao
- College of Science
- Huazhong Agricultural University
- Wuhan
- China
- Department of Pharmacy
| | - Nicholas J. Green
- Research School of Chemistry
- Australian National University
- ACT
- Canberra
- Australia
| | - Sheng-Zhen Xu
- College of Science
- Huazhong Agricultural University
- Wuhan
- China
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20
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Li XH, Zhu M, Wang ZX, Liu XY, Song H, Zhang D, Wang FP, Qin Y. Synthesis of Atisine, Ajaconine, Denudatine, and Hetidine Diterpenoid Alkaloids by a Bioinspired Approach. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609882] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Xiao-Huan Li
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Min Zhu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Zhi-Xiu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Hao Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Dan Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Feng-Peng Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
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21
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Li XH, Zhu M, Wang ZX, Liu XY, Song H, Zhang D, Wang FP, Qin Y. Synthesis of Atisine, Ajaconine, Denudatine, and Hetidine Diterpenoid Alkaloids by a Bioinspired Approach. Angew Chem Int Ed Engl 2016; 55:15667-15671. [PMID: 27860043 DOI: 10.1002/anie.201609882] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Indexed: 02/02/2023]
Affiliation(s)
- Xiao-Huan Li
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Min Zhu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Zhi-Xiu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Hao Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Dan Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Feng-Peng Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
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22
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Han JC, Li CC. Ruthenium-Catalyzed Metathesis Cascade Reactions in Natural Products Synthesis. CHEM REC 2016; 17:499-517. [PMID: 27775863 DOI: 10.1002/tcr.201600110] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 09/12/2016] [Indexed: 12/20/2022]
Abstract
In this account, we provide a brief summary of recent developments in ruthenium-catalyzed metathesis cascade reactions towards the total synthesis of natural products. We also highlight recent progress from our own laboratory regarding the synthesis of securinega alkaloids and humulanolides, which has resulted in the development of novel ruthenium-catalyzed metathesis cascade reactions. Inspired and guided by the pioneering and elegant research conducted in this area, we developed a regio-controlled relay dienyne metathesis cascade reaction and a cyclobutene-promoted RCM/ROM/RCM cascade reaction for the synthesis of securinega alkaloids and humulanolides, respectively.
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Affiliation(s)
- Jing-Chun Han
- Department of Chemistry, South University of Science and Technology of China, Shenzhen, 518055, China
| | - Chuang-Chuang Li
- Department of Chemistry, South University of Science and Technology of China, Shenzhen, 518055, China
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23
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Ayala CE, Dange NS, Stepherson JR, Henry JL, Fronczek FR, Kartika R. Functionalization of Silyldienol Ethers at the γ-Position via 2-Silyloxypentadienyl Cations. Org Lett 2016; 18:1084-7. [PMID: 26867094 DOI: 10.1021/acs.orglett.6b00196] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This report describes Brønsted acid catalyzed de novo synthesis of silyldienol ethers bearing tetrasubstituted double bonds via an intermediacy of 2-silyloxypentadienyl cations. The reactivity of these novel cationic intermediates could be modulated and harnessed toward direct nucleophilic additions regioselectively at the γ-position to produce highly functionalized silyldienol ethers with tunable control of the resulting double bond geometry.
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Affiliation(s)
- Caitlan E Ayala
- Department of Chemistry, Louisiana State University , 232 Choppin Hall, Baton Rouge, Louisiana 70803, United States
| | - Nitin S Dange
- Department of Chemistry, Louisiana State University , 232 Choppin Hall, Baton Rouge, Louisiana 70803, United States
| | - Jacob R Stepherson
- Department of Chemistry, Louisiana State University , 232 Choppin Hall, Baton Rouge, Louisiana 70803, United States
| | - Jeffrey L Henry
- Department of Chemistry, Louisiana State University , 232 Choppin Hall, Baton Rouge, Louisiana 70803, United States
| | - Frank R Fronczek
- Department of Chemistry, Louisiana State University , 232 Choppin Hall, Baton Rouge, Louisiana 70803, United States
| | - Rendy Kartika
- Department of Chemistry, Louisiana State University , 232 Choppin Hall, Baton Rouge, Louisiana 70803, United States
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24
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Zhang H, Han YS, Wainberg MA, Yue JM. Anti-HIV Securinega alkaloid oligomers from Flueggea virosa. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.10.064] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Zhang H, Zhang CR, Han YS, Wainberg MA, Yue JM. New Securinega alkaloids with anti-HIV activity from Flueggea virosa. RSC Adv 2015. [DOI: 10.1039/c5ra22191a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of Securinega alkaloid hybrids and oligomers with anti-HIV activity were isolated and identified from Flueggea virosa.
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Affiliation(s)
- Hua Zhang
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- P. R. China
| | - Chuan-Rui Zhang
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- P. R. China
| | - Ying-Shan Han
- McGill University Aids Centre
- The Lady Davis Institute for Medical Research
- Jewish General Hospital
- Montreal
- Canada
| | - Mark A. Wainberg
- McGill University Aids Centre
- The Lady Davis Institute for Medical Research
- Jewish General Hospital
- Montreal
- Canada
| | - Jian-Min Yue
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- P. R. China
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26
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Bassler DP, Spence L, Alwali A, Beale O, Beng TK. Expedient access to α,β-difunctionalized azepenes using α-halo eneformamides: application to the one-pot synthesis of 2-benzazepanes. Org Biomol Chem 2015; 13:2285-92. [DOI: 10.1039/c4ob02183e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The regioselective synthesis of α,β-difunctionalized (alkenyl, aryl, sulfonyl, allyl, or alkynyl) azepenes has been accomplished through α-halo eneformamides.
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Affiliation(s)
| | - Laura Spence
- Department of Chemistry
- Susquehanna University
- Selinsgrove
- USA
| | - Amir Alwali
- Department of Chemistry
- Susquehanna University
- Selinsgrove
- USA
| | - Oliver Beale
- Department of Chemistry
- Susquehanna University
- Selinsgrove
- USA
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27
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Chirkin E, Atkatlian W, Porée FH. The Securinega Alkaloids. THE ALKALOIDS: CHEMISTRY AND BIOLOGY 2015; 74:1-120. [DOI: 10.1016/bs.alkal.2014.11.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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28
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Heravi MM, Ahmadi T, Ghavidel M, Heidari B, Hamidi H. Recent applications of the hetero Diels–Alder reaction in the total synthesis of natural products. RSC Adv 2015. [DOI: 10.1039/c5ra17488k] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The synthetic utility and potential power of the Diels–Alder (D–A) reaction in organic chemistry is evident.
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Affiliation(s)
| | | | | | | | - Hoda Hamidi
- Department of Chemistry
- Alzahra University
- Tehran
- Iran
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29
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Zheng X, Liu J, Ye CX, Wang A, Wang AE, Huang PQ. SmI2-Mediated Radical Coupling Strategy to Securinega Alkaloids: Total Synthesis of (−)-14,15-Dihydrosecurinine and Formal Total Synthesis of (−)-Securinine. J Org Chem 2014; 80:1034-41. [DOI: 10.1021/jo502522x] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao Zheng
- Department
of Chemistry and The Key Laboratory for Chemical Biology of Fujian
Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
- Key
Laboratory of Synthetic Chemistry of Natural Substances, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Juan Liu
- Department
of Chemistry and The Key Laboratory for Chemical Biology of Fujian
Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Chen-Xi Ye
- Department
of Chemistry and The Key Laboratory for Chemical Biology of Fujian
Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Ao Wang
- Department
of Chemistry and The Key Laboratory for Chemical Biology of Fujian
Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Ai-E Wang
- Department
of Chemistry and The Key Laboratory for Chemical Biology of Fujian
Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Pei-Qiang Huang
- Department
of Chemistry and The Key Laboratory for Chemical Biology of Fujian
Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
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30
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Szcześniak P, Stecko S, Maziarz E, Staszewska-Krajewska O, Furman B. Synthesis of Polyhydroxylated Quinolizidine and Indolizidine Scaffolds from Sugar-Derived Lactams via a One-Pot Reduction/Mannich/Michael Sequence. J Org Chem 2014; 79:10487-503. [DOI: 10.1021/jo502146z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Piotr Szcześniak
- Institute of Organic Chemistry, Polish Academy of Sciences Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Sebastian Stecko
- Institute of Organic Chemistry, Polish Academy of Sciences Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Elżbieta Maziarz
- Institute of Organic Chemistry, Polish Academy of Sciences Kasprzaka 44/52, 01-224 Warsaw, Poland
| | | | - Bartłomiej Furman
- Institute of Organic Chemistry, Polish Academy of Sciences Kasprzaka 44/52, 01-224 Warsaw, Poland
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31
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Ma N, Yao Y, Zhao BX, Wang Y, Ye WC, Jiang S. Total synthesis of securinega alkaloids (−)-norsecurinine, (−)-niruroidine and (−)-flueggine A. Chem Commun (Camb) 2014; 50:9284-7. [DOI: 10.1039/c4cc02575j] [Citation(s) in RCA: 46] [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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32
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Casavant BJ, Hosseini AS, Chemler SR. 6-Azabicyclo[3.2.1]octanes Via Copper-Catalyzed Enantioselective Alkene Carboamination. Adv Synth Catal 2014; 356:2697-2702. [PMID: 25484848 DOI: 10.1002/adsc.201400317] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Bridged bicyclic rings containing nitrogen heterocycles are important motifs in bioactive small organic molecules. An enantioselective copper-catalyzed alkene carboamination reaction that creates bridged heterocycles is reported herein. Two new rings are formed in this alkene carboamination reaction where N-sulfonyl-2-aryl-4-pentenamines are converted to 6-azabicyclo[3.2.1]octanes using [Ph-Box-Cu](OTf)2 or related catalysts in the presence of MnO2 as stoichiometric oxidant in moderate to good yields and generally excellent enantioselectivities. Two new stereocenters are formed in the reaction, and the C-C bond-forming arene addition is a net C-H functionalization.
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Affiliation(s)
- Barbara J Casavant
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, New York 14260, United States. ; phone: (+1)-715-645-4225
| | - Azade S Hosseini
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, New York 14260, United States. ; phone: (+1)-715-645-4225
| | - Sherry R Chemler
- Department of Chemistry, The State University of New York at Buffalo, Buffalo, New York 14260, United States. ; phone: (+1)-715-645-4225
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33
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Hussain MK, Ansari MI, Kant R, Hajela K. Tandem C-2 Functionalization–Intramolecular Azide–Alkyne 1,3-Dipolar Cycloaddition Reaction: A Convenient Route to Highly Diversified 9H-Benzo[b]pyrrolo[1,2-g][1,2,3]triazolo[1,5-d][1,4]diazepines. Org Lett 2013; 16:560-3. [DOI: 10.1021/ol403420z] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Mohd. Kamil Hussain
- Medicinal and Process Chemistry
Division and §Molecular and Structural Biology
Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension,
Sitapur Road Lucknow 226031, India
| | - Mohd. Imran Ansari
- Medicinal and Process Chemistry
Division and §Molecular and Structural Biology
Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension,
Sitapur Road Lucknow 226031, India
| | - Ruchir Kant
- Medicinal and Process Chemistry
Division and §Molecular and Structural Biology
Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension,
Sitapur Road Lucknow 226031, India
| | - Kanchan Hajela
- Medicinal and Process Chemistry
Division and §Molecular and Structural Biology
Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension,
Sitapur Road Lucknow 226031, India
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34
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ElSohly AM, Wespe DA, Poore TJ, Snyder SA. An Efficient Approach to the Securinega Alkaloids Empowered by Cooperative N-Heterocyclic Carbene/Lewis Acid Catalysis. Angew Chem Int Ed Engl 2013; 52:5789-94. [DOI: 10.1002/anie.201301849] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Indexed: 11/10/2022]
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35
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ElSohly AM, Wespe DA, Poore TJ, Snyder SA. An Efficient Approach to the Securinega Alkaloids Empowered by Cooperative N-Heterocyclic Carbene/Lewis Acid Catalysis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301849] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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Affiliation(s)
- Stephen W. Laws
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg,
Virginia 23187, United States
| | - Jonathan R. Scheerer
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg,
Virginia 23187, United States
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37
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Zhang H, Zhang CR, Zhu KK, Gao AH, Luo C, Li J, Yue JM. Fluevirosines A–C: A Biogenesis Inspired Example in the Discovery of New Bioactive Scaffolds from Flueggea virosa. Org Lett 2012; 15:120-3. [DOI: 10.1021/ol303146a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hua Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China
| | - Chuan-Rui Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China
| | - Kong-Kai Zhu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China
| | - An-Hui Gao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China
| | - Cheng Luo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China
| | - Jian-Min Yue
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People’s Republic of China
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38
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Affiliation(s)
- Hikaru Suzuki
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Sakae Aoyagi
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Horinouchi, Hachioji, Tokyo 192-0392, Japan
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39
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Wei H, Qiao C, Liu G, Yang Z, Li CC. Stereoselective Total Syntheses of (−)-Flueggine A and (+)-Virosaine B. Angew Chem Int Ed Engl 2012; 52:620-4. [DOI: 10.1002/anie.201208261] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2012] [Indexed: 11/06/2022]
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40
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Wei H, Qiao C, Liu G, Yang Z, Li CC. Stereoselective Total Syntheses of (−)-Flueggine A and (+)-Virosaine B. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201208261] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Shao J, Yang JS. A Diastereoselective Cyclic Imine Cycloaddition Strategy To Access Polyhydroxylated Indolizidine Skeleton: Concise Syntheses of (+)-/(−)-Lentiginosines and (−)-2-epi-Steviamine. J Org Chem 2012; 77:7891-900. [PMID: 22946565 DOI: 10.1021/jo3010777] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jia Shao
- Key Laboratory of Drug Targeting, Ministry of Education,
and Department of Chemistry of Medicinal Natural Products, West China
School of Pharmacy, Sichuan University,
Chengdu 610041, P. R. China
| | - Jin-Song Yang
- Key Laboratory of Drug Targeting, Ministry of Education,
and Department of Chemistry of Medicinal Natural Products, West China
School of Pharmacy, Sichuan University,
Chengdu 610041, P. R. China
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42
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Chen JH, Levine SR, Buergler JF, McMahon TC, Medeiros MR, Wood JL. Total Syntheses of (±)-Securinine and (±)- Allosecurinine. Org Lett 2012; 14:4531-3. [DOI: 10.1021/ol3020072] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jung-Hsuan Chen
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States, and Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Samantha R. Levine
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States, and Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Jonas F. Buergler
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States, and Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Travis C. McMahon
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States, and Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Matthew R. Medeiros
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States, and Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - John L. Wood
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States, and Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
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43
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Szostak M, Spain M, Procter DJ. Preparation of Samarium(II) Iodide: Quantitative Evaluation of the Effect of Water, Oxygen, and Peroxide Content, Preparative Methods, and the Activation of Samarium Metal. J Org Chem 2012; 77:3049-59. [PMID: 22375820 DOI: 10.1021/jo300135v] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michal Szostak
- School of Chemistry, University of Manchester, Oxford
Road, Manchester, M13 9PL, United Kingdom
| | - Malcolm Spain
- School of Chemistry, University of Manchester, Oxford
Road, Manchester, M13 9PL, United Kingdom
| | - David J. Procter
- School of Chemistry, University of Manchester, Oxford
Road, Manchester, M13 9PL, United Kingdom
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44
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Yajima A, Kagohara Y, Shikai K, Katsuta R, Nukada T. Synthesis of two osteoclast-forming suppressors, demethylincisterol A3 and chaxine A. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.12.057] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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45
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Kuttruff CA, Geiger S, Cakmak M, Mayer P, Trauner D. An Approach to Aminonaphthoquinone Ansamycins Using a Modified Danishefsky Diene. Org Lett 2012; 14:1070-3. [DOI: 10.1021/ol203437a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christian A. Kuttruff
- Department of Chemistry and Pharmacology, Ludwig-Maximilians-Universität München and Center for Integrated Protein Science, 81377 Munich, Germany
| | - Simon Geiger
- Department of Chemistry and Pharmacology, Ludwig-Maximilians-Universität München and Center for Integrated Protein Science, 81377 Munich, Germany
| | - Mesut Cakmak
- Department of Chemistry and Pharmacology, Ludwig-Maximilians-Universität München and Center for Integrated Protein Science, 81377 Munich, Germany
| | - Peter Mayer
- Department of Chemistry and Pharmacology, Ludwig-Maximilians-Universität München and Center for Integrated Protein Science, 81377 Munich, Germany
| | - Dirk Trauner
- Department of Chemistry and Pharmacology, Ludwig-Maximilians-Universität München and Center for Integrated Protein Science, 81377 Munich, Germany
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Seiple IB, Su S, Young IS, Nakamura A, Yamaguchi J, Jørgensen L, Rodriguez RA, O’Malley DP, Gaich T, Köck M, Baran PS. Enantioselective total syntheses of (-)-palau'amine, (-)-axinellamines, and (-)-massadines. J Am Chem Soc 2011; 133:14710-26. [PMID: 21861522 PMCID: PMC3173569 DOI: 10.1021/ja2047232] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Dimeric pyrrole-imidazole alkaloids represent a rich and topologically unique class of marine natural products. This full account will follow the progression of efforts that culminated in the enantioselective total syntheses of the most structurally ornate members of this family: the axinellamines, the massadines, and palau'amine. A bio-inspired approach capitalizing on the pseudo-symmetry of the members of this class is recounted, delivering a deschloro derivative of the natural product core. Next, the enantioselective synthesis of the chlorocyclopentane core featuring a scalable, catalytic, enantioselective Diels-Alder reaction of a 1-siloxydiene is outlined in detail. Finally, the successful divergent conversion of this core to each of the aforementioned natural products, and the ensuing methodological developments, are described.
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Affiliation(s)
- Ian B. Seiple
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037
| | | | | | - Akifumi Nakamura
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037
| | - Junichiro Yamaguchi
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037
| | - Lars Jørgensen
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037
| | - Rodrigo A. Rodriguez
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037
| | - Daniel P. O’Malley
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037
| | - Tanja Gaich
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037
| | - Matthias Köck
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037
| | - Phil S. Baran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California, 92037
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Rehák J, Fišera L, Kožíšek J, Bellovičová L. Synthesis of trihydroxylated pyrrolizidine and indolizidine alkaloids based on SmI2-induced reductive coupling of chiral nitrones with methyl acrylate. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.05.129] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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48
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Chan DG, Winternheimer DJ, Merlic CA. Enol silyl ethers via copper(II)-catalyzed C-O bond formation. Org Lett 2011; 13:2778-81. [PMID: 21510621 DOI: 10.1021/ol2009297] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Copper(II) acetate catalyzes the coupling of pinacol vinylboronates with silanols producing enol silyl ethers. This represents a novel enol silyl ether synthesis via formation of the C-O bond instead of the conventional Si-O bond. This also constitutes the first transition-metal-catalyzed oxidative cross-coupling with silanols.
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Affiliation(s)
- Daniel G Chan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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49
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Medeiros MR, Wood JL. An Enantioselective Approach to the Securinega Alkaloids: The Total Synthesis of (+)-Norsecurinine and (+)-Allonorsecurinine. Tetrahedron 2010; 66:4701-4709. [PMID: 21037961 PMCID: PMC2963860 DOI: 10.1016/j.tet.2010.03.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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50
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Wang GC, Wang Y, Zhang XQ, Li YL, Yao XS, Ye WC. Securinega Alkaloids from Flueggea leucopyra. Chem Pharm Bull (Tokyo) 2010; 58:390-3. [DOI: 10.1248/cpb.58.390] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Guo-cai Wang
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
| | - Ying Wang
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
| | - Xiao-qi Zhang
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
| | - Yao-lan Li
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
| | - Xin-sheng Yao
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
| | - Wen-cai Ye
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University
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