1
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Zhang Z, Li X, Song Q, Li Y, Tian X, Ali S, Yao Y, Li P, Wang Z, Zheng H. Asymmetric Total Synthesis of (+)-Chuanxiongnolide L1 via a Stereoselective Oxidative Dearomatization/Diels-Alder Strategy. Org Lett 2024; 26:2928-2933. [PMID: 38551465 DOI: 10.1021/acs.orglett.4c00411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
The first asymmetric total synthesis of chuanxiongnolide L1 was achieved in 16 steps and 1.9% overall yield by employing a bioinspired chiral auxiliary strategy. The key steps involving asymmetric oxidative dearomatization of chiral amino ether and subsequent asymmetric Diels-Alder reaction of the resulting masked chiral ortho-benzoquinone were adopted.
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Affiliation(s)
- Zhiqiang Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Xiuhuan Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Qingyan Song
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Yuerong Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Xiqing Tian
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Sajjad Ali
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Yuan Yao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Pengfei Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Zhengshen Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Huaiji Zheng
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
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2
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Jeon H, Kim JH, Kim S. Recent asymmetric synthesis of natural products bearing an α-tertiary amine moiety via temporary chirality induction strategies. Nat Prod Rep 2024; 41:228-250. [PMID: 37846620 DOI: 10.1039/d3np00032j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
Covering: 2013 to 2023The α-tertiary amine moiety is a common structural motif in natural alkaloids and is frequently associated with intriguing biological activities and inherent synthetic challenges. A major hurdle in the total synthesis of these alkaloids is the asymmetric construction of the α-tertiary amine moiety. Temporary chirality inductions have been effective strategies employed to address this issue, particularly in natural product synthesis. The temporary chirality induction strategies in α-tertiary amine synthesis can be broadly classified into three categories based on the types of temporary chirality involved: Seebach's self-regeneration of stereocenters (SRS), C-to-N-to-C chirality transfer, and memory of chirality (MOC). This review highlights the recent advancements in temporary chirality induction strategies for the total synthesis of α-tertiary amine-containing natural products between 2013 and 2023.
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Affiliation(s)
- Hongjun Jeon
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Jae Hyun Kim
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Sanghee Kim
- College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea.
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3
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Xu W, Sun TY, Di Y, Hao X, Wu YD. Inverse Electron-Demanding Diels-Alder Reactions in the Chemical Synthesis of Prenylated Indole Alkaloids Containing a Bicycle[2.2.2]diazaoctane Moiety: A Theoretical Study. Chem Asian J 2023; 18:e202300063. [PMID: 36806582 DOI: 10.1002/asia.202300063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/17/2023] [Accepted: 02/19/2023] [Indexed: 02/22/2023]
Abstract
The Diels-Alder reaction is believed to be a key step in the biosynthesis of prenylated indole alkaloids containing a bicycle[2.2.2]diazaoctane moiety. Many chemical syntheses of bicyclic structures by Diels-Alder reactions have been reported, but the reaction mechanism remains underexplored. We have carried out DFT calculations on both acid- and base-promoted Diels-Alder reactions in these syntheses and reveal that the reactions occur through an inverse-electron demand mechanism. We hope that the new mechanism is helpful for the mechanistic understanding of the biosynthesis of this class of important natural products.
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Affiliation(s)
- Wenqiang Xu
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China.,Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, 518132, P. R. China
| | - Tian-Yu Sun
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China.,Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, 518132, P. R. China
| | - Yingtong Di
- State Key Laboratory of Phytochemistry and, Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, P. R. China
| | - Xiaojiang Hao
- State Key Laboratory of Phytochemistry and, Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, P. R. China
| | - Yun-Dong Wu
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China.,Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, 518132, P. R. China.,College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
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4
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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5
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Pramanik S, Saha P, Ghosh P, Mukhopadhyay C. Substrate specific ring opening annulations of donor-acceptor cyclopropanes with 3-phenacylidene-2-oxindoles. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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6
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Boron Trifluoride Etherate Promoted Regioselective 3-Acylation of Indoles with Anhydrides. Molecules 2022; 27:molecules27238281. [PMID: 36500373 PMCID: PMC9741063 DOI: 10.3390/molecules27238281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
An efficient, high-yielding and scalable procedure for the regioselective 3-acylation of indoles with anhydrides promoted by boron trifluoride etherate under mild conditions was reported. This novel protocol provided a simple way to prepare 3-(benzofuran-2-yl) indole in three steps.
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7
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Huizar FJ, Hill HM, Bacher EP, Eckert KE, Gulotty EM, Rodriguez KX, Tucker ZD, Banerjee M, Liu H, Wiest O, Zartman J, Ashfeld BL. Rational Design and Identification of Harmine-Inspired, N-Heterocyclic DYRK1A Inhibitors Employing a Functional Genomic In Vivo Drosophila Model System. ChemMedChem 2022; 17:e202100512. [PMID: 34994084 DOI: 10.1002/cmdc.202100512] [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: 07/28/2021] [Revised: 01/06/2022] [Indexed: 11/09/2022]
Abstract
Deregulation of dual-specificity tyrosine phosphorylation-regulated kinase 1A (DYRK1A) plays a significant role in developmental brain defects, early-onset neurodegeneration, neuronal cell loss, dementia, and several types of cancer. Herein, we report the discovery of three new classes of N-heterocyclic DYRK1A inhibitors based on the potent, yet toxic kinase inhibitors, harmine and harmol. An initial in vitro evaluation of the small molecule library assembled revealed that the core heterocyclic motifs benzofuranones, oxindoles, and pyrrolones, showed statistically significant DYRK1A inhibition. Further, the utilization of a low cost, high-throughput functional genomic in vivo model system to identify small molecule inhibitors that normalize DYRK1A overexpression phenotypes is described. This in vivo assay substantiated the in vitro results, and the resulting correspondence validates generated classes as architectural motifs that serve as potential DYRK1A inhibitors. Further expansion and analysis of these core compound structures will allow discovery of safe, more effective chemical inhibitors of DYRK1A to ameliorate phenotypes caused by DYRK1A overexpression.
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Affiliation(s)
- Francisco J Huizar
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Harrison M Hill
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Emily P Bacher
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Kaitlyn E Eckert
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Eva M Gulotty
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Kevin X Rodriguez
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Zachary D Tucker
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Monimoy Banerjee
- Warren Family Center for Drug Discovery and Development, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Haining Liu
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Olaf Wiest
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
- Warren Family Center for Drug Discovery and Development, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Jeremiah Zartman
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Brandon L Ashfeld
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
- Warren Family Center for Drug Discovery and Development, University of Notre Dame, Notre Dame, IN 46556, USA
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8
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Chen C, Huang Y, Ding J, Liu L, Zhu B. Palladium‐Catalyzed Carbamoyl‐Carbamoylation/ Carboxylation/Thioesterification of Alkene‐Tethered Carbamoyl Chlorides Using Mo(CO)
6
as the Carbonyl Source. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Chen Chen
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Yujie Huang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Jie Ding
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Liying Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 People's Republic of China
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9
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Xu F, Smith MW. A general approach to 2,2-disubstituted indoxyls: total synthesis of brevianamide A and trigonoliimine C. Chem Sci 2021; 12:13756-13763. [PMID: 34760160 PMCID: PMC8549782 DOI: 10.1039/d1sc03533a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 09/15/2021] [Indexed: 12/11/2022] Open
Abstract
The indoxyl unit is a common structural motif in alkaloid natural products and bioactive compounds. Here, we report a general method that transforms readily available 2-substituted indoles into 2,2-disubstituted indoxyls via nucleophile coupling with a 2-alkoxyindoxyl intermediate and showcase its utility in short total syntheses of the alkaloids brevianamide A (7 steps) and trigonoliimine C (6 steps). The developed method is operationally simple and demonstrates broad scope in terms of nucleophile identity and indole substitution, tolerating 2-alkyl substituents and free indole N-H groups, elements beyond the scope of most prior approaches. Spirocyclic indoxyl products are also accessible via intramolecular nucleophilic trapping.
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Affiliation(s)
- Fan Xu
- Department of Biochemistry, UT Southwestern Medical Center 5323 Harry Hines Blvd Dallas Texas 75390 USA
| | - Myles W Smith
- Department of Biochemistry, UT Southwestern Medical Center 5323 Harry Hines Blvd Dallas Texas 75390 USA
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10
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Dhote PS, Patel P, Vanka K, Ramana CV. Total synthesis of the pseudoindoxyl class of natural products. Org Biomol Chem 2021; 19:7970-7994. [PMID: 34486008 DOI: 10.1039/d1ob01285a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pseudoindoxyl sub-structural motif, amongst the large set of the indole class of alkaloids, represents a unique subset of the oxygenated indole class of the alkaloid family. A majority of this class of natural products contains complex bridged/polycyclic scaffolds with interesting biological profiles. They are thus attractive synthetic targets. Starting from 1963, twenty-eight natural products having the pseudoindoxyl scaffold have been isolated, among which the synthesis of 13 natural products has been accomplished. In this review, we highlight the completed as well as the formal total synthesis of the natural products with a spiro-pseudoindoxyl ring, with a focus on their development. The challenges and the future perspective based on the recent developments in the field will also be discussed. We strongly believe that this review will not only update but also attract the attention of researchers in dealing with the synthesis of pseudoindoxyl compounds.
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Affiliation(s)
- Pawan S Dhote
- Organic Chemistry Division, CSIR-National Chemical Laboratory Dr Homi Bhabha Road, Pune-411008, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Pitambar Patel
- CSIR-North East Institute of Science and Technology, Assam-785006, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Kumar Vanka
- Physical Chemistry Division, CSIR-National Chemical Laboratory Dr Homi Bhabha Road, Pune-411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Chepuri V Ramana
- Organic Chemistry Division, CSIR-National Chemical Laboratory Dr Homi Bhabha Road, Pune-411008, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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11
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Shelar SV, Argade NP. Facile synthesis of indolizinoindolone, indolylepoxypyrrolooxazole, indolylpyrrolooxazolone and isoindolopyrazinoindolone heterocycles from indole and imide derivatives. Org Biomol Chem 2021; 19:6160-6169. [PMID: 34190304 DOI: 10.1039/d1ob00754h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Chemo-, regio- and diastereoselective coupling reactions of indole with imide derivatives leading to unique heterocyclic systems are demonstrated. Acid-induced 3-position coupling reactions of indole with cyclic imide derived lactamols followed by acid promoted 2-position cyclizations with the corresponding aldehydes are described to obtain the indolizinoindolones and benzoindolizinoindolones. Base induced 2-position coupling reactions of N-tosylindole with N-(2-iodoethyl)imides and the subsequent cyclizations provide indolylepoxypyrrolooxazole, indolylpyrrolooxazolone and indolyloxazoloisoindolone. Reductive cleavage of indolyloxazoloisoindolone to the corresponding alcohol followed by mesylation and base promoted N-cyclization affords the in situ air-oxidized pentacyclic product hydroxyisoindolopyrazinoindolone. A regioisomeric structural revision of the natural product from 1,2,5,6,7,11c-hexahydro-3H-indolizino[7,8-b]indol-3-one to 1,2,5,6,11,11b-hexahydro-3H-indolizino(8,7-b)indol-3-one is also reported in the present studies focussed on the methodologies for heterocyclic synthesis.
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Affiliation(s)
- Santosh V Shelar
- Division of Organic Chemistry, National Chemical Laboratory (CSIR), Pune 411 008, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Narshinha P Argade
- Division of Organic Chemistry, National Chemical Laboratory (CSIR), Pune 411 008, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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12
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Siva Sankara C, Namboothiri INN. Regio- and Stereoselective Synthesis of Dispiro-bisoxindoles via [3+2] Annulation Involving Nitroisatylidene as a Vinylogous Michael Donor. Org Lett 2021; 23:4618-4623. [PMID: 34038641 DOI: 10.1021/acs.orglett.1c01360] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A cascade [3+2] annulation, involving a γ-selective vinylogous Michael addition of nitroalkylideneoxindoles to various electron deficient alkenes followed by an intramolecular Michael addition, provides access to dispiro-bis-oxindoles and spiro-oxindoles. Up to four contiguous chiral centers, including two quaternary spirocenters, are generated in this high-yield regio- and diastereoselective transformation that also provides a convenient entry into conformationally constrained γ-amino acid derivatives.
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13
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Lalitha A, Vinoth N, Vadivel P. Expedient Synthesis and Antibacterial Activity of Tetrahydro-1′H-spiro[indoline-3,4′-quinoline]-3′-carbonitrile Derivatives Using Piperidine as Catalyst. Synlett 2021. [DOI: 10.1055/s-0040-1706682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
AbstractA convenient synthesis of 2′-amino-7′,7′-dimethyl-2,5′-dioxo-1′-(phenylamino)-5′,6′,7′,8′-tetrahydro-1′H-spiro[indoline-3,4′-quinoline]-3′-carbonitrile derivatives has been designed using different substituted isatins, various 5,5-dimethyl-3-(2-phenylhydrazinyl)cyclohex-2-enones (arylhydrazones of dimedone) and malononitrile in ethanol with piperidine as catalyst at room temperature. The structures of the synthesized compounds have been elucidated by various spectroscopic techniques. The selected compounds have also been evaluated for their antibacterial activities against human pathogenic bacteria.
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14
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Tang X, Ni H, Lu Y. Phosphine-catalyzed enantioselective [4 + 1] annulation of oxindoles with allenic ketones for the construction of spirocyclopentene oxindoles. Org Chem Front 2021. [DOI: 10.1039/d1qo00669j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A phosphine-catalyzed enantioselective [4 + 1] annulation between allenic ketones and oxindoles has been developed.
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Affiliation(s)
- Xiaodong Tang
- Department of Chemistry
- National University of Singapore
- Singapore
- National University of Singapore (Suzhou) Research Institute
- Suzhou
| | - Huanzhen Ni
- Department of Chemistry
- National University of Singapore
- Singapore
| | - Yixin Lu
- Department of Chemistry
- National University of Singapore
- Singapore
- National University of Singapore (Suzhou) Research Institute
- Suzhou
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15
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Wan Q, Chen L, Li S, Kang Q, Yuan Y, Du Y. Enantioselective Synthesis of Multisubstituted Spirocyclopentane Oxindoles Enabled by Pd/Chiral Rh(III) Complex Synergistic Catalysis. Org Lett 2020; 22:9539-9544. [PMID: 33263254 DOI: 10.1021/acs.orglett.0c03588] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Qian Wan
- College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China
| | - Liang Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
| | - Shiwu Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
| | - Qiang Kang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
| | - Yaofeng Yuan
- College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China
| | - Yu Du
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
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16
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Fraley AE, Tran HT, Kelly SP, Newmister SA, Tripathi A, Kato H, Tsukamoto S, Du L, Li S, Williams RM, Sherman DH. Flavin-Dependent Monooxygenases NotI and NotI' Mediate Spiro-Oxindole Formation in Biosynthesis of the Notoamides. Chembiochem 2020; 21:2449-2454. [PMID: 32246875 PMCID: PMC7483341 DOI: 10.1002/cbic.202000004] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 04/04/2020] [Indexed: 11/08/2022]
Abstract
The fungal indole alkaloids are a unique class of complex molecules that have a characteristic bicyclo[2.2.2]diazaoctane ring and frequently contain a spiro-oxindole moiety. While various strains produce these compounds, an intriguing case involves the formation of individual antipodes by two unique species of fungi in the generation of the potent anticancer agents (+)- and (-)-notoamide A. NotI and NotI' have been characterized as flavin-dependent monooxygenases that catalyze epoxidation and semi-pinacol rearrangement to form the spiro-oxindole center within these molecules. This work elucidates a key step in the biosynthesis of the notoamides and provides an evolutionary hypothesis regarding a common ancestor for production of enantiopure notoamides.
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Affiliation(s)
- Amy E Fraley
- Life Sciences Institute, University of Michigan, 210 Washtenaw Ave., Ann Arbor, MI 28104, USA
- Department of Medicinal Chemistry, University of Michigan, 428 Church St., Ann Arbor, MI 48109, USA
| | - Hong T Tran
- Life Sciences Institute, University of Michigan, 210 Washtenaw Ave., Ann Arbor, MI 28104, USA
- Program in Chemical Biology, University of Michigan, 210 Washtenaw Ave., Ann Arbor, MI 48109, USA
| | - Samantha P Kelly
- Life Sciences Institute, University of Michigan, 210 Washtenaw Ave., Ann Arbor, MI 28104, USA
- Program in Chemical Biology, University of Michigan, 210 Washtenaw Ave., Ann Arbor, MI 48109, USA
| | - Sean A Newmister
- Life Sciences Institute, University of Michigan, 210 Washtenaw Ave., Ann Arbor, MI 28104, USA
| | - Ashootosh Tripathi
- Life Sciences Institute, University of Michigan, 210 Washtenaw Ave., Ann Arbor, MI 28104, USA
- Department of Medicinal Chemistry, University of Michigan, 428 Church St., Ann Arbor, MI 48109, USA
| | - Hikaru Kato
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto, 862-0973, Japan
| | - Sachiko Tsukamoto
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto, 862-0973, Japan
| | - Lei Du
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong, 266237, China
| | - Shengying Li
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong, 266237, China
| | - Robert M Williams
- Department of Chemistry, Colorado State University, 1301 Center Ave., Fort Collins, CO 80523, USA
| | - David H Sherman
- Life Sciences Institute, University of Michigan, 210 Washtenaw Ave., Ann Arbor, MI 28104, USA
- Department of Medicinal Chemistry, University of Michigan, 428 Church St., Ann Arbor, MI 48109, USA
- Department of Microbiology and Immunology, University of Michigan Medical School, 1150W. Medical Center Drive, Ann Arbor, MI 48109
- Department of Chemistry, University of Michigan, 930N. University Ave., Ann Arbor, MI 48109, USA
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17
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21-Epi-taichunamide D and (±)-versicaline A, three unusual alkaloids from the endophytic Aspergillus versicolor F210. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152219] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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18
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Roque JB, Mercado-Marin EV, Richter SC, Pereira de Sant'Ana D, Mukai K, Ye Y, Sarpong R. A unified strategy to reverse-prenylated indole alkaloids: total syntheses of preparaherquamide, premalbrancheamide, and (+)-VM-55599. Chem Sci 2020; 11:5929-5934. [PMID: 32953008 PMCID: PMC7480500 DOI: 10.1039/d0sc02296a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 05/28/2020] [Indexed: 12/27/2022] Open
Abstract
A full account of our studies toward reverse-prenylated indole alkaloids that contain a bicyclo[2.2.2]core is described. A divergent route is reported which has resulted in the synthesis of preparaherquamide, (+)-VM-55599, and premalbrancheamide. An intramolecular Dieckmann cyclization between an enolate and isocyanate was used to forge the bicyclo[2.2.2]diazaoctane core that is characteristic of these molecules. The pentacyclic indole scaffold was constructed through a one-pot Hofmann rearrangement followed by Fischer indole synthesis. The utilization of our previously reported indole peripheral functionalization strategy also led to natural products including malbrancheamides B, C, stephacidin A, notoamides F, I and R, aspergamide B, and waikialoid A. Ultimately, the divergent route that we devised provided access to a wide range of prenylated indole alkaloids that are differently substituted on the cyclic amine core.
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Affiliation(s)
- Jose B Roque
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
| | | | - Sven C Richter
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
| | | | - Ken Mukai
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
| | - Yingda Ye
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
| | - Richmond Sarpong
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
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19
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Velezheva VS, Babii OL, Khodak AA, Alekseeva EA, Nelyubina YV, Godovikov IA, Peregudov AS, Majorov KB, Nikonenko BV. Novel base-initiated cascade reactions of hemiindigos to produce dipolar γ-carbolines and indole-fused pentacycles. RSC Adv 2019; 9:41402-41408. [PMID: 35541627 PMCID: PMC9076487 DOI: 10.1039/c9ra07807j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 12/04/2019] [Indexed: 12/03/2022] Open
Abstract
Novel continuous-flow cascade reactions are developed for producing 1,4-diaryl-disubstituted dipolar γ-carbolines 2 that contain a carboxylate group and their two pentacyclic precursors 6, 7 from hemiindigos 1. The nucleophilic and pro-electrophilic chemistry described is new to the hemiindigos 1, and it led to the discovery of antimycobacterial scaffold characteristic of rimino-type pentacycles 6, 7 and potent drug clofazimine. The new scaffold like clofazimine appears to be useful in developing lead agents active against drug-resistant/dormant TB. Based on hemiindigos we developed novel reactions for producing γ-carbolines and their precursors that appeared to be active against MTB.![]()
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Affiliation(s)
- V S Velezheva
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - O L Babii
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - A A Khodak
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - E A Alekseeva
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - Yu V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - I A Godovikov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - A S Peregudov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - K B Majorov
- Laboratory for Immunogenetics, Central Institute for Tuberculosis Moscow Russia
| | - B V Nikonenko
- Laboratory for Immunogenetics, Central Institute for Tuberculosis Moscow Russia
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20
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Mokhtari TS, Seifi M, Saheb V, Sheibani H. Polar [3 + 2] cycloaddition of isatin-3-imines with electrophilically activated heteroaromatic N-ylides: Synthesis of spirocyclic imidazo[1,2-a]pyridine and isoquinoline derivatives. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2015.05.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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21
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Pan D, Mou C, Zan N, Lv Y, Song BA, Chi YR, Jin Z. NaOH-Promoted Chemoselective Cascade Cyclization of Cyclopropyl Esters with Unsaturated Imines: Access to Bioactive Cyclopenta[c]pyridine Derivatives. Org Lett 2019; 21:6624-6627. [PMID: 31411487 DOI: 10.1021/acs.orglett.9b02088] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A chemoselective cascade cycloaddition reaction is developed for green and efficient access to cyclopenta[c]pyridine derivatives. Simple and inexpensive NaOH is used as the sole catalyst for this process. The δ-carbon of cyclopropyl ester is activated as a nucleophilic carbon to initiate highly chemoselective cascade reactions. Cyclopenta[c]pyridines bearing various substituents are afforded in excellent yields. Preliminary studies on the bioactivities of the afforded products show promising antibacterial activities for potential applications in plant protections.
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Affiliation(s)
- Dingwu Pan
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Chengli Mou
- Guizhou University of Traditional Chinese Medicine, Huaxi District, Guiyang 550025, China
| | - Ningning Zan
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Ya Lv
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Bao-An Song
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Yonggui Robin Chi
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China.,Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
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22
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Morrill LA, Susick RB, Chari JV, Garg NK. Total Synthesis as a Vehicle for Collaboration. J Am Chem Soc 2019; 141:12423-12443. [PMID: 31356068 DOI: 10.1021/jacs.9b05588] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
"Collaboration" is not the first word most would associate with the field of total synthesis. In fact, the spirit of total synthesis is all-too-often reputed as being more competitive, rather than collaborative, sometimes even within individual laboratories. However, recent studies in total synthesis have inspired a number of collaborative efforts that strategically blend synthetic methodology, biocatalysis, biosynthesis, computational chemistry, and drug discovery with complex molecule synthesis. This Perspective highlights select recent advances in these areas, including collaborative syntheses of chlorolissoclimide, nigelladine A, artemisinin, ingenol, hippolachnin A, communesin A, and citrinalin B. The legendary Woodward-Eschenmoser collaboration that led to the total synthesis of vitamin B12 is also discussed.
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Affiliation(s)
- Lucas A Morrill
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Robert B Susick
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Jason V Chari
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Neil K Garg
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
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23
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Benitez-Medina GE, Ortiz-Soto S, Cabrera A, Amézquita-Valencia M. Regioselective Synthesis of 2-Arylindoles via Palladium-Catalyzed Cyclization of Phenylglyoxal and 2-Anilinoacetophenones with Anilines. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900394] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- G. Eliad Benitez-Medina
- Universidad Nacional Autónoma de México; Instituto de Química, Ciudad Universitaria; Circuito Exterior Ciudad de México 04510 México
| | - Sofía Ortiz-Soto
- Universidad Nacional Autónoma de México; Instituto de Química, Ciudad Universitaria; Circuito Exterior Ciudad de México 04510 México
| | - Armando Cabrera
- Universidad Nacional Autónoma de México; Instituto de Química, Ciudad Universitaria; Circuito Exterior Ciudad de México 04510 México
| | - Manuel Amézquita-Valencia
- Universidad Nacional Autónoma de México; Instituto de Química, Ciudad Universitaria; Circuito Exterior Ciudad de México 04510 México
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24
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He Y, Feng T, Fan X. Synthesis of Functionalized Indole-1-oxide Derivatives via Cascade Reactions of Allenynes and tBuONO. Org Lett 2019; 21:3918-3922. [DOI: 10.1021/acs.orglett.9b00968] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yan He
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Environment, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Tian Feng
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Environment, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Environment, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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25
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Klas KR, Kato H, Frisvad JC, Yu F, Newmister SA, Fraley AE, Sherman DH, Tsukamoto S, Williams RM. Structural and stereochemical diversity in prenylated indole alkaloids containing the bicyclo[2.2.2]diazaoctane ring system from marine and terrestrial fungi. Nat Prod Rep 2019; 35:532-558. [PMID: 29632911 DOI: 10.1039/c7np00042a] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Covering: up to February 2017 Various fungi of the genera Aspergillus, Penicillium, and Malbranchea produce prenylated indole alkaloids possessing a bicyclo[2.2.2]diazaoctane ring system. After the discovery of distinct enantiomers of the natural alkaloids stephacidin A and notoamide B, from A. protuberus MF297-2 and A. amoenus NRRL 35660, another fungi, A. taichungensis, was found to produce their diastereomers, 6-epi-stephacidin A and versicolamide B, as major metabolites. Distinct enantiomers of stephacidin A and 6-epi-stephacidin A may be derived from a common precursor, notoamide S, by enzymes that form a bicyclo[2.2.2]diazaoctane core via a putative intramolecular hetero-Diels-Alder cycloaddition. This review provides our current understanding of the structural and stereochemical homologies and disparities of these alkaloids. Through the deployment of biomimetic syntheses, whole-genome sequencing, and biochemical studies, a unified biogenesis of both the dioxopiperazine and the monooxopiperazine families of prenylated indole alkaloids constituted of bicyclo[2.2.2]diazaoctane ring systems is presented.
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Affiliation(s)
- Kimberly R Klas
- Department of Chemistry, Colorado State University, 1301 Center Avenue, Fort Collins, CO 80523, USA.
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26
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Xiao JA, Cheng XL, Li YC, He YM, Li JL, Liu ZP, Xia PJ, Su W, Yang H. Palladium-catalysed ring-opening [3 + 2]-annulation of spirovinylcyclopropyl oxindole to diastereoselectively access spirooxindoles. Org Biomol Chem 2019; 17:103-107. [PMID: 30520921 DOI: 10.1039/c8ob02859a] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A novel palladium-catalysed ring-opening [3 + 2]-annulation of spirovinylcyclopropyl oxindole with α,β-unsaturated nitroalkenes is reported. A series of spirooxindole derivatives were synthesized in high yields and good to excellent diastereoselectivities. This developed protocol offers a new and efficient pathway for the assembly of spirooxindoles.
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Affiliation(s)
- Jun-An Xiao
- College of Chemistry and Materials Science, Guangxi Teachers Education University, Nanning 530001, P. R. China
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27
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Xiao JA, Li YC, Luo ZJ, Cheng XL, Deng ZX, Chen WQ, Su W, Yang H. Construction of Bispirooxindole Heterocycles via Palladium-Catalyzed Ring-Opening Formal [3 + 2]-Cycloaddition of Spirovinylcyclopropyl Oxindole and 3-Oxindole Derivatives. J Org Chem 2019; 84:2297-2306. [PMID: 30632746 DOI: 10.1021/acs.joc.8b02889] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A palladium-catalyzed ring-opening oxo-formal [3 + 2]-cycloaddition reaction of novel donor-acceptor spirovinylcyclopropyl oxindole with 3-oxindole is described. The developed protocol provides facile access to oxo-bispirooxindole derivatives in good yields (up to 82% yield) with excellent diastereoselectivities (up to 20:1 dr).
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Affiliation(s)
- Jun-An Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics , Nanning Normal University , Nanning 530001 , P.R. China
| | - Yu-Chun Li
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics , Nanning Normal University , Nanning 530001 , P.R. China
| | - Zhi-Jin Luo
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics , Nanning Normal University , Nanning 530001 , P.R. China
| | - Xiu-Liang Cheng
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics , Nanning Normal University , Nanning 530001 , P.R. China
| | - Zhi-Xiong Deng
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P.R. China
| | - Wen-Qiang Chen
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics , Nanning Normal University , Nanning 530001 , P.R. China
| | - Wei Su
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics , Nanning Normal University , Nanning 530001 , P.R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P.R. China
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28
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Vasudevan Sumesh R, Shylaja A, Ranjith Kumar R, Almansour AI, Suresh Kumar R. Synthesis of spiro-linked quinolinone-pyrrolidine/pyrrolo[1,2-c]thiazole-oxindole/acenaphthalene hybrids via multi-component [3 + 2] cycloaddition. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.10.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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29
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Huang G, Yin B. Recent Developments in Transition Metal‐Catalyzed Dearomative Cyclizations of Indoles as Dipolarophiles for the Construction of Indolines. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800789] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Guanghao Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 People's Republic of China
| | - Biaolin Yin
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 People's Republic of China
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30
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Li H, Sun W, Deng M, Zhou Q, Wang J, Liu J, Chen C, Qi C, Luo Z, Xue Y, Zhu H, Zhang Y. Asperversiamides, Linearly Fused Prenylated Indole Alkaloids from the Marine-Derived Fungus Aspergillus versicolor. J Org Chem 2018; 83:8483-8492. [PMID: 30016097 DOI: 10.1021/acs.joc.8b01087] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Asperversiamides A-H (1-8), eight linearly fused prenylated indole alkaloids featuring an unusual pyrano[3,2- f]indole unit, were isolated from the marine-derived fungus Aspergillus versicolor. The structures and absolute configurations of these compounds were elucidated by extensive spectroscopic analyses, single-crystal X-ray diffraction, electronic circular dichroism (ECD) calculations, and optical rotation (OR) calculations. The relative configuration of C-21 of iso-notoamide B was herein revised, and a new methodology for preliminarily determining if the relative configuration of the bicyclo[2.2.2]diazaoctane moiety of a spiro-bicyclo[2.2.2]diazaoctane-type indole alkaloid is syn or anti was developed. The anti-inflammatory activities of the isolated compounds were all tested, and of these compounds, 7 exhibited a potent inhibitory effect against iNOS with an IC50 value of 5.39 μM.
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Affiliation(s)
- Huaqiang Li
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology Wuhan 430030 , China
| | - Weiguang Sun
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology Wuhan 430030 , China
| | - Mengyi Deng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology Wuhan 430030 , China
| | - Qun Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology Wuhan 430030 , China
| | - Jianping Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology Wuhan 430030 , China
| | - Junjun Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology Wuhan 430030 , China
| | - Chunmei Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology Wuhan 430030 , China
| | - Changxing Qi
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology Wuhan 430030 , China
| | - Zengwei Luo
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology Wuhan 430030 , China
| | - Yongbo Xue
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology Wuhan 430030 , China
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology Wuhan 430030 , China
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology Wuhan 430030 , China
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31
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Rodriguez KX, Pilato TC, Ashfeld BL. An unusual stereoretentive 1,3-quaternary carbon shift resulting in an enantioselective Rh II-catalyzed formal [4+1]-cycloaddition between diazo compounds and vinyl ketenes. Chem Sci 2018; 9:3221-3226. [PMID: 29844895 PMCID: PMC5931190 DOI: 10.1039/c8sc00020d] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 02/17/2018] [Indexed: 12/17/2022] Open
Abstract
Enantioselective quaternary carbon construction in the assembly of cyclopentenones employing a RhII-catalyzed, formal [4+1]-cycloaddition is described. A Rh2(S-TCPTTL)4-catalyzed cyclopropanation of a vinyl ketene with a disubstituted diazo compound initiates a stereoretentive, accelerated ring expansion to provide the cycloadduct in good to excellent yields and enantioselectivity.
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Affiliation(s)
- Kevin X Rodriguez
- Department of Chemistry and Biochemistry , University of Notre Dame , Notre Dame , Indiana 46556 , USA .
| | - Tara C Pilato
- Department of Chemistry and Biochemistry , University of Notre Dame , Notre Dame , Indiana 46556 , USA .
| | - Brandon L Ashfeld
- Department of Chemistry and Biochemistry , University of Notre Dame , Notre Dame , Indiana 46556 , USA .
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32
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Perkins JC, Wang X, Pike RD, Scheerer JR. Further Investigation of the Intermolecular Diels-Alder Cycloaddition for the Synthesis of Bicyclo[2.2.2]diazaoctane Alkaloids. J Org Chem 2017; 82:13656-13662. [PMID: 29172511 DOI: 10.1021/acs.joc.7b02403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The convergent synthesis of bicyclo[2.2.2]diazaoctane structures using an intermolecular Diels-Alder cycloaddition between a pyrazinone and commercially available fumarate or maleate precursors is reported. High reactivity and stereoselection is observed with both dienophile substrates. Structure validation was achieved by conversion of cycloadducts into known [2.2.2]diazabicyclic compounds or into crystalline derivatives suitable for X-ray analysis. The cycloadduct derived from reaction of pyrazinone and maleic anhydride underwent selective anhydride ring opening and intersected an established precursor in the synthesis of brevianamide B.
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Affiliation(s)
- Jonathan C Perkins
- Department of Chemistry, The College of William & Mary , P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Xiye Wang
- Department of Chemistry, The College of William & Mary , P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Robert D Pike
- 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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33
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Pathan MY, Chavan SS, Shaikh TMY, Thorat SH, Gonnade RG, Mulla SAR. Facile One-Pot Multi-Component Synthesis of Spirooxindoles and 3, 3’-Disubstituted Oxindoles via sp3
C-H Activation/Functionalization of Azaarenes. ChemistrySelect 2017. [DOI: 10.1002/slct.201701507] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Mohsinkhan Y. Pathan
- Chemical Engineering and Process Development Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune - 411008 India
| | - Santosh S. Chavan
- Chemical Engineering and Process Development Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune - 411008 India
| | - Taufeekaslam M. Y. Shaikh
- Chemical Engineering and Process Development Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune - 411008 India
| | - Shridhar H. Thorat
- Physical and Materials Chemistry Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune - 411008 India
| | - Rajesh G. Gonnade
- Physical and Materials Chemistry Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune - 411008 India
| | - Shafeek A. R. Mulla
- Chemical Engineering and Process Development Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune - 411008 India
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34
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Borowiecki P, Dranka M, Ochal Z. Lipase-Catalyzed Kinetic Resolution ofN-Substituted 1-(β-Hydroxypropyl)indoles by Enantioselective Acetylation. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700889] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Paweł Borowiecki
- Faculty of Chemistry; Department of Drugs Technology and Biotechnology; Warsaw University of Technology; Koszykowa St. 3 00-664 Warsaw Poland
| | - Maciej Dranka
- Faculty of Chemistry; Department of Drugs Technology and Biotechnology; Warsaw University of Technology; Koszykowa St. 3 00-664 Warsaw Poland
| | - Zbigniew Ochal
- Faculty of Chemistry; Department of Drugs Technology and Biotechnology; Warsaw University of Technology; Koszykowa St. 3 00-664 Warsaw Poland
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35
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Amatov T, Pohl R, Cisařová I, Jahn U. Sequential Oxidative and Reductive Radical Cyclization Approach toward Asperparaline C and Synthesis of Its 8-Oxo Analogue. Org Lett 2017; 19:1152-1155. [PMID: 28207265 DOI: 10.1021/acs.orglett.7b00187] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The most advanced approach, so far, to the asperparalines is developed. Consecutive oxidative and reductive radical cyclizations serve as the key steps to stereoselectively access the complex fully elaborated skeleton containing the cyclopentane and spiro-succinimide units.
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Affiliation(s)
- Tynchtyk Amatov
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo namesti 2, 16610 Prague 6, Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo namesti 2, 16610 Prague 6, Czech Republic
| | - Ivana Cisařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague , Hlavova 8, 12843 Prague 2, Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo namesti 2, 16610 Prague 6, Czech Republic
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36
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Rees M, Simpkins NS, Male L. An Asymmetric Organocatalysis Approach to the Prenylated Alkaloid Family. Org Lett 2017; 19:1338-1341. [DOI: 10.1021/acs.orglett.7b00193] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew Rees
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, U.K
| | - Nigel S. Simpkins
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, U.K
| | - Louise Male
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, U.K
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37
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Zhao HY, Wang YC, Cao XL, Pang QF, Wang HS, Pan YM. Synthesis of fused tricyclic indolizines by intramolecular silver-mediated double cyclization of 2-(pyridin-2-yl)acetic acid propargyl esters. RSC Adv 2017. [DOI: 10.1039/c7ra00892a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
A silver-mediated intramolecular double cyclization of 2-(pyridin-2-yl)acetic acid propargyl esters for the synthesis of fused tricyclic indolizines is reported.
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Affiliation(s)
- Hai-Yuan Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University
- Guilin 541004
- People's Republic of China
| | - Ying-chun Wang
- College of Chemistry and Chemical Engineering
- Jishou University
- Jishou 416000
- People's Republic of China
| | - Xiao-Lin Cao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University
- Guilin 541004
- People's Republic of China
| | - Qiu-Fang Pang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University
- Guilin 541004
- People's Republic of China
| | - Heng-shan Wang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University
- Guilin 541004
- People's Republic of China
| | - Ying-ming Pan
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University
- Guilin 541004
- People's Republic of China
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38
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Amatov T, Gebauer M, Pohl R, Cisařová I, Jahn U. Oxidative radical cyclizations of diketopiperazines bearing an amidomalonate unit. Heterointermediate reaction sequences toward the asperparalines and stephacidins. Free Radic Res 2016; 50:S6-S17. [PMID: 27806645 DOI: 10.1080/10715762.2016.1223295] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A novel approach to the diazabicyclo[2.2.2]octane core of prenylated bridged diketopiperazine alkaloids is described by direct oxidative cyclizations of functionalized diketopiperazines mediated by ferrocenium hexafluorophosphate or the Mn(OAc)3•2H2O/Cu(OTf)2 system. Divergent reaction pathways take place depending on the substitution pattern of the substrates and the oxidation conditions such as temperature or the presence or absence of persistent radical TEMPO. For ester-substituted diketopiperazines, the ester group exerts a significant influence on the reaction outcome and stereochemistry of the radical cyclizations.
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Affiliation(s)
- Tynchtyk Amatov
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
| | - Martin Gebauer
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
| | - Radek Pohl
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
| | - Ivana Cisařová
- b Department of Inorganic Chemistry, Faculty of Science , Charles University in Prague , Hlavova 2030/8 , Prague 2, Czech Republic
| | - Ullrich Jahn
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
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39
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Barkov AY, Zimnitskiy NS, Korotaev VY, Kutyashev IB, Moshkin VS, Sosnovskikh VY. Highly regio- and stereoselective 1,3-dipolar cycloaddition of stabilised azomethine ylides to 3,3,3-trihalogeno-1-nitropropenes: synthesis of trihalomethylated spiro[indoline-3,2′-pyrrolidin]-2-ones and spiro[indoline-3,3′-pyrrolizin]-2-ones. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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40
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Qin WF, Xiao T, Zhang D, Deng LF, Wang Y, Qin Y. Total synthesis of (-)-depyranoversicolamide B. Chem Commun (Camb) 2016; 51:16143-6. [PMID: 26393932 DOI: 10.1039/c5cc05877e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Starting from easily prepared (R)-C3-isoprenylated pyrroloindoline, the C3-isoprenylated indolyl diketopiperazine is prepared by an efficient reductive opening of the pyrrolo ring, and undergoes biomimetic Diels-Alder reaction to generate an anti-adduct as a sole stereoisomer. Oxidation of the indoline moiety to oxindole completes the synthesis of (-)-depyranoversicolamide B.
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Affiliation(s)
- Wen-Fang Qin
- The Innovative Drug Research Centre, and School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, P. R. China
| | - T Xiao
- The Innovative Drug Research Centre, and School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, P. R. China
| | - D 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.
| | - Lin-Feng Deng
- 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.
| | - Y 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.
| | - Y 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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41
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Zhang B, Zheng W, Wang X, Sun D, Li C. Total Synthesis of Notoamides F, I, and R and Sclerotiamide. Angew Chem Int Ed Engl 2016; 55:10435-8. [DOI: 10.1002/anie.201604754] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Benxiang Zhang
- Key Laboratory of Organofluorine Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
| | - Weifeng Zheng
- Key Laboratory of Organofluorine Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
| | - Xiaoqing Wang
- Key Laboratory of Organofluorine Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
| | - Deqian Sun
- Key Laboratory of Organofluorine Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
| | - Chaozhong Li
- Key Laboratory of Organofluorine Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
- School of Chemical Engineering; Ningbo University of Technology; 89 Cuibai Road Ningbo 315016 P.R. China
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42
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Zhang B, Zheng W, Wang X, Sun D, Li C. Total Synthesis of Notoamides F, I, and R and Sclerotiamide. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604754] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Benxiang Zhang
- Key Laboratory of Organofluorine Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
| | - Weifeng Zheng
- Key Laboratory of Organofluorine Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
| | - Xiaoqing Wang
- Key Laboratory of Organofluorine Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
| | - Deqian Sun
- Key Laboratory of Organofluorine Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
| | - Chaozhong Li
- Key Laboratory of Organofluorine Chemistry and Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
- School of Chemical Engineering; Ningbo University of Technology; 89 Cuibai Road Ningbo 315016 P.R. China
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43
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Wu HR, Cheng L, Kong DL, Huang HY, Gu CL, Liu L, Wang D, Li CJ. FeCl3-Mediated Radical Tandem Reactions of 3-Benzyl-2-oxindoles with Styrene Derivatives for the Stereoselective Synthesis of Spirocyclohexene Oxindoles. Org Lett 2016; 18:1382-5. [DOI: 10.1021/acs.orglett.6b00234] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hong-Ru Wu
- Beijing
National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory
of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liang Cheng
- Beijing
National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory
of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - De-Long Kong
- Beijing
National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory
of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong-Yan Huang
- Beijing
National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory
of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chun-Ling Gu
- Beijing
National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory
of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Li Liu
- Beijing
National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory
of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Dong Wang
- Beijing
National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory
of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Chao-Jun Li
- Department
of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
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44
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Robins JG, Kim KJ, Chinn AJ, Woo JS, Scheerer JR. Intermolecular Diels-Alder Cycloaddition for the Construction of Bicyclo[2.2.2]diazaoctane Structures: Formal Synthesis of Brevianamide B and Premalbrancheamide. J Org Chem 2016; 81:2293-301. [PMID: 26916112 DOI: 10.1021/acs.joc.5b02744] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A stereoselective intermolecular Diels-Alder cycloaddition of an intermediate pyrazinone with both achiral and chiral acrylate-derived dienophiles provides rapid access to the bicyclo[2.2.2]diazaoctane core shared among several prenylated indole alkaloids. The product derived from cycloaddition with 2-nitroacrylate required an additional five to six synthetic operations to intercept established precursors to premalbrancheamide and brevianamide B. The chemistry detailed in this manuscript constitutes a formal total synthesis (12 steps each) of these [2.2.2]diazabicyclic natural products from proline methyl ester.
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Affiliation(s)
- Jacob G Robins
- Department of Chemistry, The College of William & Mary , P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Kyu J Kim
- Department of Chemistry, The College of William & Mary , P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Alex J Chinn
- Department of Chemistry, The College of William & Mary , P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - John S Woo
- 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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45
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Xu JX, Ye F, Bai XF, Zhang J, Xu Z, Zheng ZJ, Xu LW. Fei-Phos ligand-controlled asymmetric palladium-catalyzed allylic substitutions with structurally diverse nucleophiles: scope and limitations. RSC Adv 2016. [DOI: 10.1039/c6ra09657c] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The asymmetric palladium-catalysed alkylation of structurally diverse nucleophiles, including alcohols, activated methylene compounds, indoles, and aromatic amines, led to the formation of corresponding products in good yields and high enantioselectivities (up to 99% ee).
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Affiliation(s)
- Jian-Xing Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Fei Ye
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Xing-Feng Bai
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics
| | - Jin Zhang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Zheng Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Zhan-Jiang Zheng
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics
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46
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Mondal P, Argade NP. Stereoselective synthesis of (−)-desethyleburnamonine, (−)-vindeburnol and (−)-3-epitacamonine: observation of a substrate dependent diastereoselectivity reversal of an aldol reaction. Org Biomol Chem 2016; 14:10394-10406. [DOI: 10.1039/c6ob01438k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
(−)-Acetoxyglutarimide was used for synthesis of target compounds wherein an acetoxy group induced enantioselectivity and functioned as a source of ketones.
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Affiliation(s)
- Pravat Mondal
- Division of Organic Chemistry
- National Chemical Laboratory (CSIR)
- Pune 411 008
- India
| | - Narshinha P. Argade
- Division of Organic Chemistry
- National Chemical Laboratory (CSIR)
- Pune 411 008
- India
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47
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Li CW, Wu CJ, Cui CB, Xu LL, Cao F, Zhu HJ. Penicimutamides A–C: rare carbamate-containing alkaloids from a mutant of the marine-derived Penicillium purpurogenum G59. RSC Adv 2016. [DOI: 10.1039/c6ra14904a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Three new and rare carbamate-containing penicimutamides A–C (1–3) were discovered via activating silent pathways in a marine-derived fungus.
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Affiliation(s)
- Chang-Wei Li
- State Key Laboratory of Toxicology and Medical Countermeasures
- Beijing Institute of Pharmacology and Toxicology
- Beijing 100850
- China
| | - Chang-Jing Wu
- State Key Laboratory of Toxicology and Medical Countermeasures
- Beijing Institute of Pharmacology and Toxicology
- Beijing 100850
- China
| | - Cheng-Bin Cui
- State Key Laboratory of Toxicology and Medical Countermeasures
- Beijing Institute of Pharmacology and Toxicology
- Beijing 100850
- China
| | - Lan-Lan Xu
- Chinese Center for Chirality
- Key Laboratory of Medicinal Chemistry and Molecular Diagnostics of the Ministry of Education
- College of Pharmacy
- Hebei University
- Baoding 071002
| | - Fei Cao
- Chinese Center for Chirality
- Key Laboratory of Medicinal Chemistry and Molecular Diagnostics of the Ministry of Education
- College of Pharmacy
- Hebei University
- Baoding 071002
| | - Hua-Jie Zhu
- Chinese Center for Chirality
- Key Laboratory of Medicinal Chemistry and Molecular Diagnostics of the Ministry of Education
- College of Pharmacy
- Hebei University
- Baoding 071002
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48
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Chen X, Fan H, Zhang S, Yu C, Wang W. Facile Installation of 2-Reverse Prenyl Functionality into Indoles by a Tandem N-Alkylation-Aza-Cope Rearrangement Reaction and Its Application in Synthesis. Chemistry 2015; 22:716-23. [PMID: 26586470 DOI: 10.1002/chem.201503355] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Indexed: 11/06/2022]
Abstract
An unprecedented tandem N-alkylation-ionic aza-Cope (or Claisen) rearrangement-hydrolysis reaction of readily available indolyl bromides with enamines is described. Due to the complicated nature of the two processes, an operationally simple N-alkylation and subsequent microwave-irradiated ionic aza-Cope rearrangement-hydrolysis process has been uncovered. The tandem reaction serves as a powerful approach to the preparation of synthetically and biologically important, but challenging, 2-reverse quaternary-centered prenylated indoles with high efficiency. Notably, unusual nonaromatic 3-methylene-2,3-dihydro-1H-indole architectures, instead of aromatic indoles, are produced. Furthermore, the aza-Cope rearrangement reaction proceeds highly regioselectively to give the quaternary-centered reverse prenyl functionality, which often produces a mixture of two regioisomers by reported methods. The synthetic value of the resulting nonaromatic 3-methylene-2,3-dihydro-1H-indole architectures has been demonstrated as versatile building blocks in the efficient synthesis of structurally diverse 2-reverse prenylated indoles, such as indolines, indole-fused sultams and lactams, and the natural product bruceolline D.
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Affiliation(s)
- Xiaobei Chen
- School of Pharmacy, East China University of Science and Technology, 130 Mei-Long Road, Shanghai 200237 (P. R. China). , .,Department of Chemistry & Chemical Biology, University of New Mexico, MSC03 2060, Albuquerque, NM 87131-0001 (USA), Fax: (+1)505-277-2609. ,
| | - Huaqiang Fan
- School of Pharmacy, East China University of Science and Technology, 130 Mei-Long Road, Shanghai 200237 (P. R. China)
| | - Shilei Zhang
- Department of Chemistry & Chemical Biology, University of New Mexico, MSC03 2060, Albuquerque, NM 87131-0001 (USA), Fax: (+1)505-277-2609.,College of Pharmaceutical Sciences, Soochow University, 199 Ren'ai Road, Suzhou 215123 (P.R. China)
| | - Chenguang Yu
- Department of Chemistry & Chemical Biology, University of New Mexico, MSC03 2060, Albuquerque, NM 87131-0001 (USA), Fax: (+1)505-277-2609
| | - Wei Wang
- School of Pharmacy, East China University of Science and Technology, 130 Mei-Long Road, Shanghai 200237 (P. R. China). , .,Department of Chemistry & Chemical Biology, University of New Mexico, MSC03 2060, Albuquerque, NM 87131-0001 (USA), Fax: (+1)505-277-2609. ,
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49
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Liu Y, Xue J, Sun Z, Liu D, Xing Y, Li Y. Substituent-Controlled Selective Synthesis of Spirooxindoles and Oxazolyloxindoles via Two Tandem Reactions. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500290] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yun Liu
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; 222 Tianshui South Rd. Lanzhou 730000, Gansu P. R. China
| | - Jijun Xue
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; 222 Tianshui South Rd. Lanzhou 730000, Gansu P. R. China
| | - Zhou Sun
- College of Chemical Science and Engineering; Qingdao University; 308 Ningxia Rd. Qingdao 266000, Shandong P. R. China
| | - Dongxue Liu
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; 222 Tianshui South Rd. Lanzhou 730000, Gansu P. R. China
| | - Yacheng Xing
- College of Chemical Science and Engineering; Qingdao University; 308 Ningxia Rd. Qingdao 266000, Shandong P. R. China
| | - Ying Li
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; 222 Tianshui South Rd. Lanzhou 730000, Gansu P. R. China
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50
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Amatov T, Pohl R, Císařová I, Jahn U. Synthesis of Bridged Diketopiperazines by Using the Persistent Radical Effect and a Formal Synthesis of Bicyclomycin. Angew Chem Int Ed Engl 2015; 54:12153-7. [DOI: 10.1002/anie.201504883] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Indexed: 01/29/2023]
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