1
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Jiang C, Hu L, Shen S, Zhang J, Wang X, Ma D, Lu G, Xu T. Type I [4σ+4π] versus [4σ+4π-1] Cycloaddition To Access Medium-Sized Carbocycles and Discovery of a Liver X Receptor β-Selective Ligand. Angew Chem Int Ed Engl 2024; 63:e202405838. [PMID: 38647574 DOI: 10.1002/anie.202405838] [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: 03/26/2024] [Revised: 04/12/2024] [Accepted: 04/22/2024] [Indexed: 04/25/2024]
Abstract
Transition-metal-catalyzed [4+4] cycloaddition leading to cyclooctanoids has centered on dimerization between 1,3-diene-type substrates. Herein, we describe a [4σ+4π-1] and [4σ+4π] cycloaddition strategy to access 7/8-membered fused carbocycles through rhodium-catalyzed coupling between the 4σ-donor (benzocyclobutenones) and pendant diene (4π) motifs. The two pathways can be controlled by adjusting the solvated CO concentration. A broad range (>40 examples) of 5-6-7 and 5-6-8 polyfused carbocycles was obtained in good yields (up to 90 %). DFT calculations, kinetic monitoring and 13C-labeling experiments were carried out, suggesting a plausible mechanism. Notably, one 5-6-7 tricycle was found to be a very rare, potent, and selective ligand for the liver X receptor β (KD=0.64 μM), which is a potential therapeutic target for cholesterol-metabolism-related fatal diseases.
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Affiliation(s)
- Cheng Jiang
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy, Laboratory for Marine Drugs and Bioproducts of Marine Natural Products, Ocean University of China, 5 Yushan road, Qingdao, 266003, China
| | - Lingfei Hu
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, 27 Shandanan road, Jinan, 250100, China
| | - Shuna Shen
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy, Laboratory for Marine Drugs and Bioproducts of Marine Natural Products, Ocean University of China, 5 Yushan road, Qingdao, 266003, China
| | - Jianyu Zhang
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy, Laboratory for Marine Drugs and Bioproducts of Marine Natural Products, Ocean University of China, 5 Yushan road, Qingdao, 266003, China
| | - Xi Wang
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy, Laboratory for Marine Drugs and Bioproducts of Marine Natural Products, Ocean University of China, 5 Yushan road, Qingdao, 266003, China
| | - Dongxu Ma
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy, Laboratory for Marine Drugs and Bioproducts of Marine Natural Products, Ocean University of China, 5 Yushan road, Qingdao, 266003, China
| | - Gang Lu
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, 27 Shandanan road, Jinan, 250100, China
| | - Tao Xu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy, Laboratory for Marine Drugs and Bioproducts of Marine Natural Products, Ocean University of China, 5 Yushan road, Qingdao, 266003, China
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2
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Kanwal A, Bilal M, Rasool N, Zubair M, Shah SAA, Zakaria ZA. Total Synthesis of Terpenes and Their Biological Significance: A Critical Review. Pharmaceuticals (Basel) 2022; 15:1392. [PMID: 36422521 PMCID: PMC9699253 DOI: 10.3390/ph15111392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 10/13/2022] [Accepted: 10/24/2022] [Indexed: 09/10/2024] Open
Abstract
Terpenes are a group of natural products made up of molecules with the formula (C5H8)n that are typically found in plants. They are widely employed in the medicinal, flavor, and fragrance industries. The total synthesis of terpenes as well as their origin and biological potential are discussed in this review.
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Affiliation(s)
- Aqsa Kanwal
- Department of Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Muhammad Bilal
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Nasir Rasool
- Department of Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Muhammad Zubair
- Department of Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Syed Adnan Ali Shah
- Faculty of Pharmacy, Universiti Teknologi MARA Cawangan Selangor Kampus Puncak Alam, Bandar Puncak Alam 42300, Selangor, Malaysia
- Atta-ur-Rahman Institute for Natural Product Discovery (AuRIns), Universiti Teknologi MARA Cawangan Selangor Kampus Puncak Alam, Bandar Puncak Alam 42300, Selangor, Malaysia
| | - Zainul Amiruddin Zakaria
- Borneo Research on Algesia, Inflammation and Neurodegeneration (BRAIN) Group, Faculty of Medicine and Health Sciences, Sabah Universiti Malaysia, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia
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3
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Luis‐Barrera J, Rodriguez S, Uria U, Reyes E, Prieto L, Carrillo L, Pedrón M, Tejero T, Merino P, Vicario JL. Brønsted Acid versus Phase-Transfer Catalysis in the Enantioselective Transannular Aminohalogenation of Enesultams. Chemistry 2022; 28:e202202267. [PMID: 36111677 PMCID: PMC10053555 DOI: 10.1002/chem.202202267] [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: 07/19/2022] [Indexed: 11/12/2022]
Abstract
We have studied the enantioselective transannular aminohalogenation reaction of unsaturated medium-sized cyclic benzosulfonamides by using both chiral Brønsted acid and phase-transfer catalysis. Under optimized conditions, a variety of bicyclic adducts can be obtained with good yields and high enantioselectivities. The mechanism of the reaction was also studied by using computational tools; we observed that the reaction involves the participation of a conformer of the nine-membered cyclic substrate with planar chirality in which the stereochemical outcome is controlled by the relative reactivity of the two pseudorotational enantiomers when interacting with the chiral catalyst.
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Affiliation(s)
- Javier Luis‐Barrera
- Department of Organic and Inorganic ChemistryUniversity of the Basque Country (UPV/EHU) P.O. Box 64448080BilbaoSpain
| | - Sandra Rodriguez
- Department of Organic and Inorganic ChemistryUniversity of the Basque Country (UPV/EHU) P.O. Box 64448080BilbaoSpain
| | - Uxue Uria
- Department of Organic and Inorganic ChemistryUniversity of the Basque Country (UPV/EHU) P.O. Box 64448080BilbaoSpain
| | - Efraim Reyes
- Department of Organic and Inorganic ChemistryUniversity of the Basque Country (UPV/EHU) P.O. Box 64448080BilbaoSpain
| | - Liher Prieto
- Department of Organic and Inorganic ChemistryUniversity of the Basque Country (UPV/EHU) P.O. Box 64448080BilbaoSpain
| | - Luisa Carrillo
- Department of Organic and Inorganic ChemistryUniversity of the Basque Country (UPV/EHU) P.O. Box 64448080BilbaoSpain
| | - Manuel Pedrón
- Instituto de Biocomputación y Fisica de Sistemas Complejos (BIFI)Universidad de Zaragoza50009ZaragozaSpain
| | - Tomás Tejero
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)Universidad de Zaragoza-CSIC50009ZaragozaSpain
| | - Pedro Merino
- Instituto de Biocomputación y Fisica de Sistemas Complejos (BIFI)Universidad de Zaragoza50009ZaragozaSpain
| | - Jose L. Vicario
- Department of Organic and Inorganic ChemistryUniversity of the Basque Country (UPV/EHU) P.O. Box 64448080BilbaoSpain
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4
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Boron-tethered oxidopyrylium-based [5 + 2] cycloadditions. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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5
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Xing S, Wang Y, Jin C, Shi S, Zhang Y, Liao Z, Wang K, Zhu B. Construction of Bridged Aza- and Oxa-[ n.2.1] Skeletons via an Intramolecular Formal [3+2] Cycloaddition of Aziridines and Epoxides with Electron-Deficient Alkenes. J Org Chem 2022; 87:6426-6431. [PMID: 35439001 DOI: 10.1021/acs.joc.2c00287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An intramolecular formal [3+2] cycloaddition of activated aziridines and epoxides with electron-deficient alkene has been developed for the general and efficient construction of bridged aza- and oxa-[n.2.1] (n = 3 or 4) skeletons. This strategy can be efficiently promoted by lithium iodide. To demonstrate its potential, the intramolecular formal [3+2] cycloaddition was used to access the important intermediate of homoepiboxidine.
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Affiliation(s)
- Siyang Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Yuhan Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Changkun Jin
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Shaochen Shi
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Yihui Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Ziya Liao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Kui Wang
- 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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6
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Ali R, Ahmed W, Jayant V, alvi S, Ahmed N, Ahmed A. Metathesis reactions in total‐ and natural product fragments syntheses. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100753] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Rashid Ali
- Jamia Millia Islamia New Delhi India 110025 Department of Chemistry Jamia Nagar,New Delhi india110025 110025 New Delhi INDIA
| | - Waqar Ahmed
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - Vikrant Jayant
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - shakeel alvi
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - Nadeem Ahmed
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - Azeem Ahmed
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
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7
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Liu X, Liu J, Wu J, Li CC. Enantioselective Total Synthesis of Cerorubenic Acid-III via Type II [5+2] Cycloaddition Reaction. J Org Chem 2021; 86:11125-11139. [PMID: 33887910 DOI: 10.1021/acs.joc.1c00185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first enantioselective total synthesis of cerorubenic acid-III is described in detail. Different strategies and attempts, based on a type II [5+2] cycloaddition reaction, leading to the bicyclo[4.4.1] ring system with a strained bridgehead double bond, are depicted. Furthermore, sodium naphthalenide was found to be efficient in the chemoselective reduction of 8-oxabicyclo[3.2.1]octene, with three transformations completed in one operation. An unusual SN1 transannular cyclization reaction was applied to construct the synthetically challenging vinylcyclopropane moiety. This strategy enabled the total synthesis of cerorubenic acid-III in 19 steps.
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Affiliation(s)
- Xin Liu
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Junyang Liu
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jianlei Wu
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chuang-Chuang Li
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
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8
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Abstract
The first total synthesis of (±)-jujuyane, a cyclooctanoid natural product, was accomplished from a (5 + 3) dimerization product of oxidopyrylium ylide that forms the cyclooctanoid core structure along with inherited stereochemical bias. Selective functional group modifications of the highly oxygenated dimeric structure, followed by the tactical functional group manipulation around the eight-membered carbocyclic core, enabled the total synthesis of (±)-jujuyane, which will serve a guide for future applications of oxidopyrylium dimers to the natural product total synthesis.
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Affiliation(s)
- Sanghyeon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | | | | | - Jiheon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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9
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Zhang J, Wang X, Xu T. Regioselective activation of benzocyclobutenones and dienamides lead to anti-Bredt bridged-ring systems by a [4+4] cycloaddition. Nat Commun 2021; 12:3022. [PMID: 34021154 PMCID: PMC8140143 DOI: 10.1038/s41467-021-23344-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 04/26/2021] [Indexed: 02/04/2023] Open
Abstract
To the best of our knowledge, bridgehead carbon benzofused-bridged ring systems have previously not been accessible to the synthetic community. Here, we describe a formal type-II [4 + 4] cycloaddition approach that provides fully sp2-carbon embedded anti-Bredt bicyclo[5.3.1] skeletons through the Rh-catalyzed C1-C8 activation of benzocyclobutenones (BCBs) and their coupling with pedant dienamides. Variously substituted dienamides have been coupled with BCBs to provide a range of complex bicyclo[5.3.1] scaffolds (>20 examples, up to 89% yield). The bridged rings were further converted to polyfused hydroquinoline-containing tetracycles via a serendipitously discovered transannular 1,5-hydride shift/Prins-like cyclization/Schmidt rearrangement cascade.
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Affiliation(s)
- Jianyu Zhang
- Molecular Synthesis Center and Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Xi Wang
- Molecular Synthesis Center and Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Tao Xu
- Molecular Synthesis Center and Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.
- Laboratory for Marine Drugs and Bioproducts and Open Studio for Druggability Research of Marine Natural Products, Pilot National Laboratory for Marine Science and Technology, Qingdao, China.
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10
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Wu J, Liu J, Fan J, Xie Z, Qin H, Li C. Evolution of Routes for Asymmetric Total Synthesis of Cyclocitrinol Enabled by Type
II
[5+2] Cycloaddition
†. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000698] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jianlei Wu
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen Guangdong 518055 China
| | - Junyang Liu
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen Guangdong 518055 China
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Jian‐Hong Fan
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen Guangdong 518055 China
| | - Zhi‐Dong Xie
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen Guangdong 518055 China
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Hukun Qin
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen Guangdong 518055 China
| | - Chuang‐Chuang Li
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen Guangdong 518055 China
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11
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Affiliation(s)
- Guodong Zhao
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China
| | | | | | - Rongbiao Tong
- HKUST Shenzhen Research Institute, Shenzhen 518057, China
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12
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Schiavone DV, Kapkayeva DM, Murelli RP. Investigations into a Stoichiometrically Equivalent Intermolecular Oxidopyrylium [5 + 2] Cycloaddition Reaction Leveraging 3-Hydroxy-4-pyrone-Based Oxidopyrylium Dimers. J Org Chem 2021; 86:3826-3835. [PMID: 33586990 PMCID: PMC8061303 DOI: 10.1021/acs.joc.0c02655] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Oxidopyrylium [5 + 2] cycloaddition reactions are powerful strategies for constructing complex bicyclic architectures. However, intermolecular cycloadditions of oxidopyrylium ylides are limited due to competing dimerization processes; consequently, high equivalents of dipolarophiles are often used to help intercept the ylide prior to dimerization. Recent studies by our lab have revealed that oxidopyrylium dimers derived from 3-hydroxy-4-pyrones are capable of reverting back to ylides in situ and as a result can be used as clean oxidopyrylium ylide sources. The following manuscript investigates intermolecular cycloaddition reactions between 3-hydroxy-4-pyrone-derived oxidopyrylium dimers and stoichiometrically equivalent ratios of alkyne dipolarophiles under thermal conditions. With certain reactive alkynes, pure cycloadducts can be obtained following a simple evaporation of the solvent, which is a benefit of the completely atom-economical reaction conditions. However, when less reactive alkynes are used the yields suffer due to a competing dimer rearrangement. Finally, when reactive-yet-volatile alkynes are used, such as methyl propiolate, competing 2:1 ylide/alkyne cycloadducts are observed. Intriguingly, these complex cycloadducts, which can be obtained in good yields from the pure cycloadducts, form with high regio- and stereoselectivities; however, both the regio-and stereoselectivities differ remarkably based on the source of the oxidopyrylium ylide.
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Affiliation(s)
- Daniel V. Schiavone
- Department of Chemistry, Brooklyn College, The City University of New York, Brooklyn, NY, USA
- PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, NY, USA
| | - Diana M. Kapkayeva
- Department of Chemistry, Brooklyn College, The City University of New York, Brooklyn, NY, USA
| | - Ryan P. Murelli
- Department of Chemistry, Brooklyn College, The City University of New York, Brooklyn, NY, USA
- PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, NY, USA
- PhD Program in Biochemistry, The Graduate Center of the City University of New York, New York, NY, USA
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13
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Liu YF, Yu SS. Survey of natural products reported by Asian research groups in 2019. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2020; 22:1101-1120. [PMID: 33207951 DOI: 10.1080/10286020.2020.1844675] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 10/22/2020] [Accepted: 10/28/2020] [Indexed: 06/11/2023]
Abstract
The new natural products reported in 2019 in peer-reviewed articles in journals with good reputations were reviewed and analyzed. The advances made by Asian research groups in the field of natural products chemistry in 2019 were summarized. Compounds with unique structural features and/or promising bioactivities originating from Asian natural sources were discussed based on their structural classification.
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Affiliation(s)
- Yan-Fei Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Shi-Shan Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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14
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Abstract
The synthetically challenging and highly functionalized azabicyclo[6.4.1] ring system, which is found in lycopodium alkaloid lycoclavatumide and some natural molecules, was synthesized for the first time. The key reaction was a diastereoselective type II [5+2] cycloaddition with excellent functional group compatibility. We tried to install the desired eight-membered ring in the final product by RCM reaction.
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Affiliation(s)
- Xin-Feng Wang
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bin Wang
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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15
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Zhang W, Zhou ZX, Zhu XJ, Sun ZH, Dai WM, Li CC. Asymmetric Total Synthesis of the Highly Strained 4β-Acetoxyprobotryane-9β,15α-diol. J Am Chem Soc 2020; 142:19868-19873. [DOI: 10.1021/jacs.0c10116] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Wen Zhang
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Zi-Xiong Zhou
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xu-Jiang Zhu
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhang-Hua Sun
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wei-Min Dai
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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16
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Min L, Hu YJ, Fan JH, Zhang W, Li CC. Synthetic applications of type II intramolecular cycloadditions. Chem Soc Rev 2020; 49:7015-7043. [PMID: 32869796 DOI: 10.1039/d0cs00365d] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Type II intramolecular cycloadditions ([4+2], [4+3], [4+4] and [5+2]) have emerged recently as an efficient and powerful strategy for the construction of bridged ring systems. In general, type II cycloadditions provide access to a wide range of bridged bicyclo[m.n.1] ring systems with high regio- and diastereoselectivity in an easy and straightforward manner. In each section of this review, an overview of the corresponding type II cycloadditions is presented, which is followed by highlights of method development and synthetic applications in natural product synthesis. The goal of this review is to provide a survey of recent advances in the field covering literature up to 2020. The review will serve as a useful reference for organic chemists engaged in the total synthesis of natural products containing bridged bicyclo[m.n.1] ring systems and provide strong stimulus for invention and further advances in this exciting research field.
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Affiliation(s)
- Long Min
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China.
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17
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Cheng MJ, Zhong LP, Gu CC, Zhu XJ, Chen B, Liu JS, Wang L, Ye WC, Li CC. Asymmetric Total Synthesis of Bufospirostenin A. J Am Chem Soc 2020; 142:12602-12607. [PMID: 32658467 DOI: 10.1021/jacs.0c05479] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The first and asymmetric total synthesis of bioactive bufospirostenin A, an unusual spirostanol with rearranged A/B rings, was accomplished. The synthetically challenging [5-7-6-5] tetracyclic ring system, found in bufospirostenin A and some other natural products, was efficiently constructed by the unique intramolecular rhodium-catalyzed Pauson-Khand reaction of an alkoxyallene-yne. The 11 stereocenters in the final product, including the 10 contiguous stereocenters, were installed diastereoselectively.
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Affiliation(s)
- Min-Jing Cheng
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, China.,Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Li-Ping Zhong
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chen-Chen Gu
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xu-Jiang Zhu
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bo Chen
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jun-Shan Liu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Lei Wang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Wen-Cai Ye
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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18
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Hu YJ, Li LX, Han JC, Min L, Li CC. Recent Advances in the Total Synthesis of Natural Products Containing Eight-Membered Carbocycles (2009-2019). Chem Rev 2020; 120:5910-5953. [PMID: 32343125 DOI: 10.1021/acs.chemrev.0c00045] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Natural products containing eight-membered carbocycles constitute a class of structurally intriguing and biologically important molecules such as the famous diterpenes taxol and vinigrol. Such natural products are being increasingly investigated because of their fascinating architectural features and potent medicinal properties. However, synthesis of natural products with cyclooctane moieties has proved to be highly challenging. This review highlights the recently completed total syntheses of natural products with eight-membered carbocycles with a focus on strategic considerations. A collection of 27 representative studies from the literature covering the decade from 2009 to 2019 is described in chronological order with relevant studies grouped together, including syntheses of the same natural product by different research groups using different strategies. Finally, a summary and outlook including a discussion of the major features of each strategy used in the syntheses are presented. This review illustrates the diversity and creativity in the elegant synthetic designs of eight-membered carbocycles. We hope this review will provide timely illumination and beneficial guidance for future synthetic efforts for organic chemists who are interested in this area.
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Affiliation(s)
- Ya-Jian Hu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Li-Xuan Li
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Jing-Chun Han
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Long Min
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
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19
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Lautié E, Russo O, Ducrot P, Boutin JA. Unraveling Plant Natural Chemical Diversity for Drug Discovery Purposes. Front Pharmacol 2020; 11:397. [PMID: 32317969 PMCID: PMC7154113 DOI: 10.3389/fphar.2020.00397] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 03/16/2020] [Indexed: 12/11/2022] Open
Abstract
The screening and testing of extracts against a variety of pharmacological targets in order to benefit from the immense natural chemical diversity is a concern in many laboratories worldwide. And several successes have been recorded in finding new actives in natural products, some of which have become new drugs or new sources of inspiration for drugs. But in view of the vast amount of research on the subject, it is surprising that not more drug candidates were found. In our view, it is fundamental to reflect upon the approaches of such drug discovery programs and the technical processes that are used, along with their inherent difficulties and biases. Based on an extensive survey of recent publications, we discuss the origin and the variety of natural chemical diversity as well as the strategies to having the potential to embrace this diversity. It seemed to us that some of the difficulties of the area could be related with the technical approaches that are used, so the present review begins with synthetizing some of the more used discovery strategies, exemplifying some key points, in order to address some of their limitations. It appears that one of the challenges of natural product-based drug discovery programs should be an easier access to renewable sources of plant-derived products. Maximizing the use of the data together with the exploration of chemical diversity while working on reasonable supply of natural product-based entities could be a way to answer this challenge. We suggested alternative ways to access and explore part of this chemical diversity with in vitro cultures. We also reinforced how important it was organizing and making available this worldwide knowledge in an "inventory" of natural products and their sources. And finally, we focused on strategies based on synthetic biology and syntheses that allow reaching industrial scale supply. Approaches based on the opportunities lying in untapped natural plant chemical diversity are also considered.
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Affiliation(s)
- Emmanuelle Lautié
- Centro de Valorização de Compostos Bioativos da Amazônia (CVACBA)-Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, Brazil
| | - Olivier Russo
- Institut de Recherches Internationales SERVIER, Suresnes, France
| | - Pierre Ducrot
- Molecular Modelling Department, 'PEX Biotechnologie, Chimie & Biologie, Institut de Recherches SERVIER, Croissy-sur-Seine, France
| | - Jean A Boutin
- Institut de Recherches Internationales SERVIER, Suresnes, France
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20
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Min L, Liu X, Li CC. Total Synthesis of Natural Products with Bridged Bicyclo[m.n.1] Ring Systems via Type II [5 + 2] Cycloaddition. Acc Chem Res 2020; 53:703-718. [PMID: 32069021 DOI: 10.1021/acs.accounts.9b00640] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Natural products containing bridged ring systems are widely identified and show significant biological activity. The development of efficient synthesis reactions and strategies to construct bridged ring systems is a long-standing but very significant challenge in organic chemistry. In 2014, our group developed a unique type II [5 + 2] cycloaddition reaction that provides a facile and direct methodology for constructing highly functionalized bridged bicyclo[4.3.1], bicyclo[4.4.1], bicyclo[5.4.1], bicyclo[6.4.1], and other bicyclo[m.n.1] systems containing a strained bridgehead double bond. In this Account, we summarize the methodology development and report the results of application of our unique strategy for the total synthesis of several natural products with bridged ring systems (i.e., cyclocitrinol, cerorubenic acid-III, and vinigrol) during the past 5 years in our laboratory. In the first part, we introduce the logic behind the design and discovery of type II [5 + 2] cycloadditions. The substrates can be easily synthesized by a modular approach, followed by base-promoted group elimination under heat to form an oxidopyrylium ylide, which can undergo cycloaddition under relatively mild conditions with a variety of double bonds to generate bridged bicyclo[m.n.1] frameworks in high yield. The diastereocontrol and unique endo selectivity of this methodology are favorable for further application to the synthesis of complex natural products. In the second part, we highlight our endeavors in the total synthesis of several different types of molecules bearing bridged ring systems using our methodology. The bridged bicyclo[4.4.1] system is the core structure of two different types of natural products, cyclocitrinol and cerorubenic acid-III, that can be efficiently constructed by type II [5 + 2] cycloadditions. The development of suitable strategies and methods for site-selective cleavage of the C-O bond of the oxa-[3.2.1] ring system in the products of type II [5 + 2] cycloadditions is also discussed and highlighted during the syntheses. Moreover, the bridged bicyclo[5.3.1] system is the core structure of vinigrol, which can be constructed through a novel ring contraction sequence of the bicyclo[5.4.1] system formed by a type II [5 + 2] cycloaddition. By combining with a ring contraction cascade, we believe that type II [5 + 2] cycloadditions have the potential to be used as a unified approach to constructing natural products containing bridged bicyclo[m.n.1] frameworks.
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Affiliation(s)
- Long Min
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Xin Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
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21
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Bejcek LP, Murelli RP. Synthesis of aryl-substituted 2-methoxyphenol derivatives from maltol-derived oxidopyrylium cycloadducts through an acid-mediated ring contraction cascade. Chem Commun (Camb) 2020; 56:3203-3205. [PMID: 32068199 PMCID: PMC7560963 DOI: 10.1039/c9cc09213g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxidopyrylium cycloadducts derived from maltol and aryl acetylenes undergo acid-mediated rearrangements to generate aryl-substituted 2-methoxyphenol (guaiacol) derivatives. Specifically, the cycloadducts react with boron trichloride to form 2-methoxy-5-arylphenol molecules, and with methane sulfonate to form 2-methoxy-4-aryl-6-methylphenol molecules.
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Affiliation(s)
- Lauren P Bejcek
- Department of Chemistry, Brooklyn College, The City University of New York, Brooklyn, NY, USA.
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22
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23
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Zhang L, Shi Q, Cao T, Zhu S. Catalytic regio- and stereoselective intermolecular [5+2] cycloaddition via conjugative activation of oxidopyrylium. Chem Commun (Camb) 2020; 56:9533-9536. [PMID: 32691033 DOI: 10.1039/d0cc04309e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A catalytic stereodivergent intermolecular [5+2] cycloaddition of maltol-type oxidopyrylium through conjugative activation was reported.
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Affiliation(s)
- Ling Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Qiu Shi
- Key Lab of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Tongxiang Cao
- Key Lab of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Shifa Zhu
- Key Lab of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- P. R. China
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24
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Bejcek LP, Garimallaprabhakaran AK, Suyabatmaz DM, Greer A, Hersh WH, Greer EM, Murelli RP. Maltol- and Allomaltol-Derived Oxidopyrylium Ylides: Methyl Substitution Pattern Kinetically Influences [5 + 3] Dimerization versus [5 + 2] Cycloaddition Reactions. J Org Chem 2019; 84:14670-14678. [PMID: 31603325 PMCID: PMC6982524 DOI: 10.1021/acs.joc.9b02137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Oxidopyrylium ylides are useful intermediates in synthetic organic chemistry because of their capability of forming structurally complex cycloadducts. They can also self-dimerize via [5 + 3] cycloaddition, which is an oft-reported side reaction that can negatively impact [5 + 2] cycloadduct yields and efficiency. In select instances, these dimers can be synthesized and used as the source of oxidopyrylium ylide, although the generality of this process remains unclear. Thus, how the substitution pattern governs both dimerization and cycloaddition reactions is of fundamental interest to probe factors to regulate them. The following manuscript details our findings that maltol-derived oxidopyrylium ylides (i.e., with ortho methyl substitution relative to oxide) can be trapped prior to dimerization more efficiently than the regioisomeric allomaltol-derived ylide (i.e., with a para methyl substitution relative to oxide). Density functional theory studies provide evidence in support of a sterically (kinetically) controlled mechanism, whereby gauche interactions between appendages of the approaching maltol-derived ylides are privileged by higher barriers for dimerization and thus are readily intercepted by dipolarophiles via [5 + 2] cycloadditions.
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Affiliation(s)
- Lauren P Bejcek
- Department of Chemistry , Brooklyn College, The City University of New York , Brooklyn , New York 11210 , United States
- PhD Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10016 , United States
| | - Aswin K Garimallaprabhakaran
- Department of Chemistry , Brooklyn College, The City University of New York , Brooklyn , New York 11210 , United States
| | - Duygu M Suyabatmaz
- Department of Chemistry , Brooklyn College, The City University of New York , Brooklyn , New York 11210 , United States
| | - Alexander Greer
- Department of Chemistry , Brooklyn College, The City University of New York , Brooklyn , New York 11210 , United States
- PhD Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10016 , United States
| | - William H Hersh
- PhD Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10016 , United States
- Department of Chemistry and Biochemistry , Queens College, City University of New York , Queens , New York 11367 , United States
| | - Edyta M Greer
- Department of Natural Sciences , Baruch College, City University of New York , New York , New York 10010 , United States
| | - Ryan P Murelli
- Department of Chemistry , Brooklyn College, The City University of New York , Brooklyn , New York 11210 , United States
- PhD Program in Chemistry , The Graduate Center of the City University of New York , New York , New York 10016 , United States
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25
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Bulandr JJ, Grabowski JP, Law CM, Shaw JL, Goodell JR, Mitchell TA. Investigation of Transfer Group, Tether Proximity, and Alkene Substitution for Intramolecular Silyloxypyrone-Based [5 + 2] Cycloadditions. J Org Chem 2019; 84:10306-10320. [PMID: 31322900 DOI: 10.1021/acs.joc.9b01479] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Systematic investigation of intramolecular silyloxypyrone-based [5 + 2] cycloadditions revealed three significant factors impacting conversion to cycloadduct: (1) the silyl transfer group has a substantial influence on the rate of reaction, and the robust t-butyldiphenylsilyl group was found to be more effective overall than the conventional t-butyldimethylsilyl group; (2) α,β-unsaturated esters were generally more reactive than terminal olefins and afforded appreciable quantity of cycloadduct even at room temperature; and (3) the proximity of the tether to the silyl transfer group revealed a critical alignment trend between the pyrone and the alkene. Taken together, these investigations provided insight regarding the steric and electronic parameters that impact the scope and limitation of these reactions.
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Affiliation(s)
- Jacob J Bulandr
- Department of Chemistry , Illinois State University , Campus Box 4160, Normal , Illinois 61790-4160 , United States
| | - Jacob P Grabowski
- Department of Chemistry , Illinois State University , Campus Box 4160, Normal , Illinois 61790-4160 , United States
| | - Chunyin M Law
- Department of Chemistry , Illinois State University , Campus Box 4160, Normal , Illinois 61790-4160 , United States
| | - Jessica L Shaw
- Department of Chemistry , Illinois State University , Campus Box 4160, Normal , Illinois 61790-4160 , United States
| | - John R Goodell
- Department of Chemistry , Illinois State University , Campus Box 4160, Normal , Illinois 61790-4160 , United States
| | - T Andrew Mitchell
- Department of Chemistry , Illinois State University , Campus Box 4160, Normal , Illinois 61790-4160 , United States
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26
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Zhao N, Xie S, Tian P, Tong R, Ning C, Xu J. Asymmetric total synthesis of (+)-astellatol and (−)-astellatene. Org Chem Front 2019. [DOI: 10.1039/c9qo00384c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Here we describe the full account of the total synthesis of (+)-astellatol, as well as the first total synthesis of (−)-astellatene.
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Affiliation(s)
- Nan Zhao
- Department of Chemistry and Shenzhen Grubbs Institute
- Southern University of Science and Technology
- Shenzhen
- China
| | - Shengling Xie
- Department of Chemistry and Shenzhen Grubbs Institute
- Southern University of Science and Technology
- Shenzhen
- China
| | - Peilin Tian
- Department of Chemistry and Shenzhen Grubbs Institute
- Southern University of Science and Technology
- Shenzhen
- China
| | - Rongbiao Tong
- Department of Chemistry
- The Hong Kong University of Science and Technology
- Kowloon
- China
| | - Chengqing Ning
- Department of Chemistry and Shenzhen Grubbs Institute
- Southern University of Science and Technology
- Shenzhen
- China
- SUSTech Academy for Advanced Interdisciplinary Studies
| | - Jing Xu
- Department of Chemistry and Shenzhen Grubbs Institute
- Southern University of Science and Technology
- Shenzhen
- China
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