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Liu JX, Li H, Zhang SP, Lu SC, Gong YL, Xu S. Strategies for the Construction of Benzobicyclo[3.2.1]octane in Natural Product Synthesis. Chemistry 2024; 30:e202303989. [PMID: 38345999 DOI: 10.1002/chem.202303989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Indexed: 03/01/2024]
Abstract
Benzobicyclo[3.2.1]octane is a cage-like unique motif containing a bicyclo[3.2.1]octane structure fused with at least one benzene ring. It is found in various natural products that exhibit structural complexities and important biological activities. The total synthesis of natural products possessing this challenging structure has received considerable attention, and great advances have been made in this field during the past 15 years. This review summarizes thus far achieved chemical syntheses and synthetic studies of natural compounds featuring the benzobicyclo[3.2.1]octane core. It focuses on strategic approaches constructing the bridged structure, aiming to provide a useful reference for inspiring further advancements in strategies and total syntheses of natural products with such a framework.
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Affiliation(s)
- Jia-Xuan Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A Nanwei Road, Xicheng District, Beijing, 100050, China
| | - Hui Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A Nanwei Road, Xicheng District, Beijing, 100050, China
| | - Shi-Peng Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A Nanwei Road, Xicheng District, Beijing, 100050, China
| | - Shi-Chao Lu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A Nanwei Road, Xicheng District, Beijing, 100050, China
| | - Ya-Ling Gong
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A Nanwei Road, Xicheng District, Beijing, 100050, China
| | - Shu Xu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A Nanwei Road, Xicheng District, Beijing, 100050, China
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2
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Woo S, Landwehr EM, Shenvi RA. Synthesis of psychotropic alkaloids from Galbulimima. Tetrahedron 2022; 126:133064. [PMID: 37807979 PMCID: PMC10552879 DOI: 10.1016/j.tet.2022.133064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Efficient syntheses of valuable natural products open gateways from kind learning environments to wicked worlds, where long-term, interdisciplinary research questions can be asked and answered. In this Perspective, we discuss the Galbulimima (GB) alkaloids, metabolites of a rainforest canopy tree that exhibit potent but poorly understood effects in humans, including accounts of hallucination. Recent syntheses from our group have opened up GB alkaloid chemical space for investigation by way of new cross-coupling reactions and gram-scale target production. Although natural product synthesis can be challenging, its objective is obvious. Realization of long-term, enabling goals will be a circuitous journey at the interface of chemistry, pharmacology and neuroscience-a potent mix to foster discovery in the coming century.
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Affiliation(s)
- Stone Woo
- Department of Chemistry, Scripps Research, La Jolla, California 92037, United States
- Skaggs Graduate School of Chemical and Biological Sciences, Scripps Research, La Jolla, California 92037, United States
| | - Eleanor M. Landwehr
- Department of Chemistry, Scripps Research, La Jolla, California 92037, United States
- Skaggs Graduate School of Chemical and Biological Sciences, Scripps Research, La Jolla, California 92037, United States
| | - Ryan A. Shenvi
- Department of Chemistry, Scripps Research, La Jolla, California 92037, United States
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3
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Heravi MM, Nazari A. Samarium(ii) iodide-mediated reactions applied to natural product total synthesis. RSC Adv 2022; 12:9944-9994. [PMID: 35424959 PMCID: PMC8965710 DOI: 10.1039/d1ra08163b] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 03/12/2022] [Indexed: 12/22/2022] Open
Abstract
Natural product synthesis remains a field in which new synthetic methods and reagents are continually being evaluated. Due to the demanding structures and complex functionality of many natural products, only powerful and selective methods and reagents will be highlighted in this proceeding. Since its introduction by Henri Kagan, samarium(ii) iodide (SmI2, Kagan's reagent) has found increasing use in chemical synthesis. Over the years, many reviews have been published on the application of SmI2 in numerous reductive coupling procedures as well as in natural product total synthesis. This review highlights recent advances in SmI2-mediated synthetic strategies, as applied in the total synthesis of natural products since 2004.
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Affiliation(s)
- Majid M Heravi
- Department of Chemistry, School of Science, Alzahra University PO Box 1993891176 Vanak Tehran Iran +98 21 88041344 +98 21 88044051
| | - Azadeh Nazari
- Department of Chemistry, School of Science, Alzahra University PO Box 1993891176 Vanak Tehran Iran +98 21 88041344 +98 21 88044051
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4
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Zhukovsky D, Dar’in D, Bakulina O, Krasavin M. Preparation and Synthetic Applications of Five-to-Seven-Membered Cyclic α-Diazo Monocarbonyl Compounds. Molecules 2022; 27:2030. [PMID: 35335391 PMCID: PMC8954351 DOI: 10.3390/molecules27062030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/16/2022] [Accepted: 03/16/2022] [Indexed: 11/16/2022] Open
Abstract
The reactivity of cyclic α-diazo monocarbonyl compounds differs from that of their acyclic counterparts. In this review, we summarize the current literature available on the synthesis and synthetic applications of three major classes of cyclic α-diazo monocarbonyl compounds: α-diazo ketones, α-diazo lactones and α-diazo lactams.
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Affiliation(s)
- Daniil Zhukovsky
- Research & Development Department, BratskChemSyntez LLC, PharmaSyntez Company, 5A/1 Kommunalnaya St., 665717 Bratsk, Russia;
| | - Dmitry Dar’in
- Institute of Chemistry, Saint Petersburg State University, 199034 Saint Petersburg, Russia;
| | - Olga Bakulina
- Institute of Chemistry, Saint Petersburg State University, 199034 Saint Petersburg, Russia;
| | - Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University, 199034 Saint Petersburg, Russia;
- Immanuel Kant Baltic Federal University, 236041 Kaliningrad, Russia
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5
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Landwehr EM, Baker MA, Oguma T, Burdge HE, Kawajiri T, Shenvi RA. Concise syntheses of GB22, GB13, and himgaline by cross-coupling and complete reduction. Science 2022; 375:1270-1274. [PMID: 35298242 PMCID: PMC10036211 DOI: 10.1126/science.abn8343] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Neuroactive metabolites from the bark of Galbulimima belgraveana occur in variable distributions among trees and are not easily accessible through chemical synthesis because of elaborate bond networks and dense stereochemistry. Previous syntheses of complex congeners such as himgaline have relied on iterative, stepwise installation of multiple methine stereocenters. We decreased the synthetic burden of himgaline chemical space to nearly one-third of the prior best (7 to 9 versus 19 to 31 steps) by cross-coupling high fraction aromatic building blocks (high Fsp2) followed by complete, stereoselective reduction to high fraction sp3 products (high Fsp3). This short entry into Galbulimima alkaloid space should facilitate extensive chemical exploration and biological interrogation.
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Affiliation(s)
| | - Meghan A. Baker
- Department of Chemistry, Scripps Research, La Jolla, United States
| | - Takuya Oguma
- Department of Chemistry, Scripps Research, La Jolla, United States
| | - Hannah E. Burdge
- Department of Chemistry, Scripps Research, La Jolla, United States
| | | | - Ryan A. Shenvi
- Department of Chemistry, Scripps Research, La Jolla, United States
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6
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Chaudhary NK, Taylor WC, Mander LN, Karuso P. Isolation and Structure Elucidation of Additional Alkaloids from the Tropical Rainforest Tree Galbulimima baccata. JOURNAL OF NATURAL PRODUCTS 2021; 84:2525-2535. [PMID: 34491059 DOI: 10.1021/acs.jnatprod.1c00537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The structures of five new natural products (GB 27-GB 31, 1-5), isolated as minor components from the bark of Galbulimima baccata, have been determined by 2D NMR spectroscopy in combination with DFT calculations. Among the alkaloids, GB 31 (5) belongs to Class I, GB 27 (1) and 28 (2) belong to Class II, and GB 30 (4) belongs to Class III GB alkaloids. GB 31 is the first non-nitrogen-containing GB "alkaloid", being a biosynthetic oxidation product of himbacine, himandravine, or himbeline. GB 29 (3) has an entirely new natural product scaffold but belongs to Class IV (miscellaneous alkaloids). The isolation of a new Galbulimima scaffold has revealed a new pathway in the biosynthesis of the GB alkaloids. The new molecules isolated have shed further light on the biogenetic relationship among these structurally unique and complex groups of alkaloids. We present, for the first time, a unified biogenesis for the GB alkaloids that were first isolated in the 1950s and now number over 40 examples. This work also brings full circle the story of Galbulimima alkaloids. A life-long project of Wal Taylor involving one of his first students (Lew Mander) and one of his last students (Peter Karuso), a story stretching over six decades, has come to a final conclusion.
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Affiliation(s)
- Nirmal K Chaudhary
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Walter C Taylor
- School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia
| | - Lewis N Mander
- Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
| | - Peter Karuso
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia
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7
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Wang X, Li D, Zhang J, Gong J, Fu J, Yang Z. A Synthetic Route to The Core Structure of (-)-Retigeranic Acid A. Org Lett 2021; 23:5092-5097. [PMID: 34128684 DOI: 10.1021/acs.orglett.1c01633] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Retigeranic acid A is a uniquely structured pentacyclic sesterterpene bearing eight stereogenic centers. We report a concise route to the core structure of (-)-retigeranic acid A. The stereochemistry of its six chiral centers and three quaternary carbon centers was well-controlled. This route features two intramolecular Pauson-Khand reactions (IMPKRs): the first forged the D and E rings to deliver the triquinane subunit, and the second constructed the A and B rings and diastereoselectively installed the quaternary C6a center.
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Affiliation(s)
- Xiao Wang
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, Guangdong 518055, China
| | - Dian Li
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, Guangdong 518055, China
| | - Junlin Zhang
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, Guangdong 518055, China
| | - Jianxian Gong
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, Guangdong 518055, China
| | - Junkai Fu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
| | - Zhen Yang
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, Guangdong 518055, China.,Beijing National Laboratory for Molecular Science and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education, College of Chemistry and Molecular Engineering and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China.,Shenzhen Bay Laboratory, Shenzhen, Guangdong 518055, China
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8
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Tong S, Li K, Ouyang X, Song R, Li J. Recent advances in the radical-mediated decyanative alkylation of cyano(hetero)arene. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.04.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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9
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Abstract
The field of total synthesis has reached a stage in which emphasis has been increasingly focused on synthetic efficiency rather than merely achieving the synthesis of a target molecule. The pursuit of synthetic efficiency, typically represented by step count and overall yield, is a rich source of inspiration and motivation for synthetic chemists to invent innovative strategies and methods. Among them, convergent strategy has been well recognized as an effective approach to improve efficiency. This strategy generally involves coupling of fragments with similar complexity to furnish the target molecule via subsequent cyclization or late-stage functionalization. Thus, methodologies that enable effective connection of fragments are critical to devising a convergent plan. In our laboratory, convergent strategy has served as a long-standing principle for pursuing efficient synthesis during the course of planning and implementing synthetic projects. In this Account, we summarize our endeavors in the convergent synthesis of natural products over the last ten years. We show how we identify reasonable bond disconnections and employ enabling synthetic methodologies to maximize convergency, leading to the efficient syntheses of over two-dozen highly complex molecules from eight disparate families.In detail, we categorize our work into three parts based on the diverse reaction types for fragment assembly. First, we demonstrate the application of a powerful single-electron reducing agent, SmI2, in a late-stage cyclization step, forging the polycyclic skeletons of structurally fascinating Galbulimima alkaloids and Leucosceptrum sesterterpenoids. Next, we showcase how three different types of cycloaddition reactions can simultaneously construct two challenging C-C bonds in a single step, providing concise entries to three distinct families, namely, spiroquinazoline alkaloids, gracilamine, and kaurane diterpenoids. In the third part, we describe convergent assembly of ent-kaurane diterpenoids, gelsedine-type alkaloids, and several drug molecules via employing some bifunctional synthons. To access highly oxidized ent-kaurane diterpenoids, we introduce the hallmark bicyclo[3.2.1]octane ring system at an early stage, and then execute coupling and cyclization by means of a Hoppe's homoaldol reaction and a Mukaiyama-Michael-type addition, respectively. Furthermore, we showcase how the orchestrated combination of an asymmetric Michael addition, a tandem oxidation-aldol reaction and a pinacol rearrangement can dramatically improve the efficiency in synthesizing gelsedine-type alkaloids, with nary a protecting group. Finally, to address the supply issue of several drugs, including anti-influenza drug zanamivir and antitumor agent Et-743, we exploit scalable and practical approaches to provide advantages over current routes in terms of cost, ease of execution, and efficiency.
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Affiliation(s)
- Yang Gao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China
| | - Dawei Ma
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China
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10
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Ruan S, Ruan J, Chen X, Zhou S. Facile dehydration of primary amides to nitriles catalyzed by lead salts: The anionic ligand matters. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2020.111313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Williams CM, Dallaston MA. The Future of Retrosynthesis and Synthetic Planning: Algorithmic, Humanistic or the Interplay? Aust J Chem 2021. [DOI: 10.1071/ch20371] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The practice of deploying and teaching retrosynthesis is on the cusp of considerable change, which in turn forces practitioners and educators to contemplate whether this impending change will advance or erode the efficiency and elegance of organic synthesis in the future. A short treatise is presented herein that covers the concept of retrosynthesis, along with exemplified methods and theories, and an attempt to comprehend the impact of artificial intelligence in an era when freely and commercially available retrosynthetic and forward synthesis planning programs are increasingly prevalent. Will the computer ever compete with human retrosynthetic design and the art of organic synthesis?
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12
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Bao J, Tian H, Yang P, Deng J, Gui J. Modular Synthesis of Functionalized Butenolides by Oxidative Furan Fragmentation. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901613] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jiajing Bao
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Hailong Tian
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Peicheng Yang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Jiachen Deng
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Jinghan Gui
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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13
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Affiliation(s)
- Ritu Arora
- Computational Chemistry Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Kriti Kashyap
- Computational Chemistry Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Anshika Mittal
- Computational Chemistry Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Rita Kakkar
- Computational Chemistry Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
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14
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Abstract
Fragmentation reactions that generate alkynes in conjunction with C–C bond cleavage require special considerations but can produce high-value alkyne building blocks for organic synthesis.
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Affiliation(s)
- Jingyue Yang
- Hebei Key Laboratory of Applied Chemistry
- School of Environmental and Chemical Engineering
- Yanshan University
- Qinhuangdao 066004
- China
| | - Tung T. Hoang
- Department of Chemistry and Biochemistry
- Florida State University
- Tallahassee
- USA
| | - Gregory B. Dudley
- C. Eugene Bennett Department of Chemistry
- West Virginia University
- Morgantown
- USA
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15
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Talbi I, Efrit ML, Touil S. Efficient New Protocols for Converting Primary Amides into Nitriles Initiated by P(NMe 2) 3, PCl 3, or P(OPh) 3. ACS OMEGA 2018; 3:5078-5082. [PMID: 31458722 PMCID: PMC6641971 DOI: 10.1021/acsomega.8b00544] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 04/26/2018] [Indexed: 05/18/2023]
Abstract
Three efficient and high-yielding procedures have been developed for the conversion of primary amides into nitriles, mediated by hitherto unexplored P(NMe2)3, PCl3, or P(OPh)3. The reactions were conducted under operationally simple and mild conditions and displayed broad substrate scope and good functional group tolerance.
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Affiliation(s)
- Imen Talbi
- Laboratory of Heteroatom Organic Chemistry, Faculty of Sciences of Bizerte, University of Carthage, 7021 Zarzouna, Tunisia
| | - Mohamed Lotfi Efrit
- Laboratoire de Synthèse Organique Sélective et Hétérocyclique-Evaluation de l'Activité Biologique, Faculté des Sciences de Tunis, Université de Tunis El Manar, Tunis 2092, Tunisia
| | - Soufiane Touil
- Laboratory of Heteroatom Organic Chemistry, Faculty of Sciences of Bizerte, University of Carthage, 7021 Zarzouna, Tunisia
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16
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Lan P, Herlt AJ, Willis AC, Taylor WC, Mander LN. Structures of New Alkaloids from Rain Forest Trees Galbulimima belgraveana and Galbulimima baccata in Papua New Guinea, Indonesia, and Northern Australia. ACS OMEGA 2018; 3:1912-1921. [PMID: 31458503 PMCID: PMC6641496 DOI: 10.1021/acsomega.7b02065] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 01/31/2018] [Indexed: 06/10/2023]
Abstract
Following on our 60-year research on the chemical constituents of the rain forest trees Galbulimima belgraveana and Galbulimima baccata, we report the isolation of seven new alkaloids: GB14 (14), GB22 (15), GB25 (16), GB21 (17), GB23 (18), GB24 (19), and GB26 (20). Their structures were elucidated by a combination of spectroscopic analyses and single-crystal X-ray crystallography, as well as structure degradation and interconversion. The newly isolated alkaloids are precursors or derivatives of the known family members from our early studies and could be intermediates in the biosynthesis of the Galbulimima alkaloids. Therefore, the present study has expanded the range of structures in this family of alkaloids and provided some missing links in the biosynthetic sequences.
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Affiliation(s)
- Ping Lan
- Department
of Food Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Anthony J. Herlt
- Research
School of Chemistry, Australian National
University, Canberra, Australian Capital Territory 2601, Australia
| | - Anthony C. Willis
- Research
School of Chemistry, Australian National
University, Canberra, Australian Capital Territory 2601, Australia
| | - Walter C. Taylor
- School
of Chemistry, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Lewis N. Mander
- Research
School of Chemistry, Australian National
University, Canberra, Australian Capital Territory 2601, Australia
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17
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Abstract
This chapter provides a comprehensive overview of recent achievements in the area of Galbulimima alkaloids. Following a discussion of the isolation of Galbulimima alkaloids and structural features of members of this fascinating family of secondary metabolites, biological properties of selected compounds are briefly discussed. Furthermore, the proposed biosynthetic routes toward Galbulimima alkaloids are outlined. The main section of the chapter is devoted to a detailed discussion and comparison of all total syntheses of Galbulimima alkaloids published to date.
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Affiliation(s)
- Uwe Rinner
- Sultan Qaboos University, Al-Khoud, Sultanate of Oman.
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18
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Mattalia JMR. The reductive decyanation reaction: an overview and recent developments. Beilstein J Org Chem 2017; 13:267-284. [PMID: 28326136 PMCID: PMC5331330 DOI: 10.3762/bjoc.13.30] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 01/25/2017] [Indexed: 12/28/2022] Open
Abstract
This review presents an overview of the reductive decyanation reaction with a special interest for recent developments. This transformation allows synthetic chemists to take advantages of the nitrile functional group before its removal. Mechanistic details and applications to organic synthesis are provided.
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19
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Le Chapelain C. Strategy towards the enantioselective synthesis of schiglautone A. Org Biomol Chem 2017; 15:6242-6256. [DOI: 10.1039/c7ob00766c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The enantioselective synthesis of a functionalized intermediate comprising 6 of the 7 stereocenters of schiglautone A is reported and features a lithiation–borylation enzymatic resolution sequence.
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20
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Mailyan AK, Eickhoff JA, Minakova AS, Gu Z, Lu P, Zakarian A. Cutting-Edge and Time-Honored Strategies for Stereoselective Construction of C–N Bonds in Total Synthesis. Chem Rev 2016; 116:4441-557. [DOI: 10.1021/acs.chemrev.5b00712] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Artur K. Mailyan
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - John A. Eickhoff
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Anastasiia S. Minakova
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Zhenhua Gu
- Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Ping Lu
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Armen Zakarian
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
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21
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Dudognon Y, Presset M, Rodriguez J, Coquerel Y, Bugaut X, Constantieux T. Addition of silylated nucleophiles to α-oxoketenes. Chem Commun (Camb) 2016; 52:3010-3. [DOI: 10.1039/c5cc10217k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general evaluation of silylated nucleophiles to intercept transient α-oxoketenes generated by microwave-assisted Wolff rearrangement of 2-diazo-1,3-dicarbonyl compounds is presented.
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Affiliation(s)
- Yohan Dudognon
- Aix Marseille Université
- Centrale Marseille
- CNRS
- iSm2 UMR 7313
- 13397
| | - Marc Presset
- Aix Marseille Université
- Centrale Marseille
- CNRS
- iSm2 UMR 7313
- 13397
| | - Jean Rodriguez
- Aix Marseille Université
- Centrale Marseille
- CNRS
- iSm2 UMR 7313
- 13397
| | - Yoann Coquerel
- Aix Marseille Université
- Centrale Marseille
- CNRS
- iSm2 UMR 7313
- 13397
| | - Xavier Bugaut
- Aix Marseille Université
- Centrale Marseille
- CNRS
- iSm2 UMR 7313
- 13397
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22
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Kennedy ZC, Cardenas AJP, Corbey JF, Warner MG. 2,6-Diiminopiperidin-1-ol: an overlooked motif relevant to uranyl and transition metal binding on poly(amidoxime) adsorbents. Chem Commun (Camb) 2016; 52:8802-5. [DOI: 10.1039/c6cc02488b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a new cyclic diimino ligand resulting from glutardiamidoxime cyclization and associated multinuclear complexes with U(vi), Cu(ii), and Ni(ii).
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Affiliation(s)
- Zachary C. Kennedy
- National Security Directorate
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Allan Jay P. Cardenas
- Physical and Computational Sciences Directorate
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Jordan F. Corbey
- National Security Directorate
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Marvin G. Warner
- National Security Directorate
- Pacific Northwest National Laboratory
- Richland
- USA
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23
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Larson RT, Pemberton RP, Franke JM, Tantillo DJ, Thomson RJ. Total Synthesis of the Galbulimima Alkaloids Himandravine and GB17 Using Biomimetic Diels-Alder Reactions of Double Diene Precursors. J Am Chem Soc 2015; 137:11197-204. [PMID: 26305231 PMCID: PMC4612511 DOI: 10.1021/jacs.5b07710] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The enantioselective total syntheses of himandravine and GB17 were completed through a common biomimetic strategy involving Diels-Alder reactions of unusual double diene containing linear precursors. The double diene precursors, containing or lacking a C12 substituent as required to produce GB17 or himandravine, respectively, were found to undergo Diels-Alder reactions to afford mixtures of regioisomeric cycloadducts that map onto the alternative carbocyclic frameworks of both himandravine and GB17. Computational investigations revealed that these Diels-Alder reactions proceed via transition state structures of similar energy that have a high degree of bispericyclic character and that the low levels of regioselectivity observed in the reactions are a consequence of competing orbital interaction and distortion energies. The combined experimental and computational results provide valuable insights into the biosynthesis of the Galbulimima alkaloids.
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Affiliation(s)
- Reed T. Larson
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Ryan P. Pemberton
- Department of Chemistry, University of California—Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Jenna M. Franke
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Dean J. Tantillo
- Department of Chemistry, University of California—Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Regan J. Thomson
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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24
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McDonald B, Nibbs AE, Scheidt KA. A biomimetic strategy to access the silybins: total synthesis of (-)-isosilybin A. Org Lett 2015; 17:98-101. [PMID: 25517432 PMCID: PMC4284651 DOI: 10.1021/ol503303w] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Indexed: 01/11/2023]
Abstract
We report the first asymmetric, total synthesis of (-)-isosilybin A. A late-stage catalytic biomimetic cyclization of a highly functionalized chalcone is employed to form the characteristic benzopyranone ring. A robust and flexible approach to this chalcone provides an entry to the preparation of the entire isomeric family of silybin natural products.
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Affiliation(s)
- Benjamin
R. McDonald
- Dept. of Chemistry, Dept.
of Pharmacology, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Antoinette E. Nibbs
- Dept. of Chemistry, Dept.
of Pharmacology, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Karl A. Scheidt
- Dept. of Chemistry, Dept.
of Pharmacology, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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25
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Bingi C, Kale A, Nanubolu JB, Atmakur K. Acid promoted synthesis of cyclic 1,3-dione fused symmetrical 2,8-dioxabicyclo[3.3.1]nonanes. RSC Adv 2015. [DOI: 10.1039/c5ra23706h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of symmetrical 2,8-dioxabicyclo[3.3.1]nonanes (4) is accomplished by the reaction of β-enamino ketones (1) and 1,3-cyclohexanediones (2) in AcOH. However, the presence of TFA in toluene gave xanthenes (5).
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Affiliation(s)
- Chiranjeevi Bingi
- Division of Crop Protection Chemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Ashok Kale
- Division of Crop Protection Chemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Jagadeesh Babu Nanubolu
- Laboratory of X-ray Crystallography
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Krishnaiah Atmakur
- Division of Crop Protection Chemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
- AcSIR-Indian Institute of Chemical Technology
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26
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Zhang W, Haskins CW, Yang Y, Dai M. Synthesis of nitriles via palladium-catalyzed water shuffling from amides to acetonitrile. Org Biomol Chem 2014; 12:9109-12. [PMID: 25316145 PMCID: PMC4213294 DOI: 10.1039/c4ob01825g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Palladium-catalyzed synthesis of nitriles from amides has been described. Two similar, but complementary reaction conditions have been identified to convert various amides including α,β,γ,δ-unsaturated amides, cinnamides, aromatic amides and alkyl amides to the corresponding nitriles in good to excellent yield.
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Affiliation(s)
- Wandi Zhang
- Department of Chemistry and Center for Cancer Research, Purdue University, 720 Clinic Drive, West Lafayette, IN 47907, USA.
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27
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Zhao L, Wang J, Zheng H, Li Y, Yang K, Cheng B, Jin X, Yao X, Zhai H. Silver(I)-Catalyzed Ring-Contractive Rearrangement: A New Entry to 5-Alkylidene-2-cyclopentenones. Org Lett 2014; 16:6378-81. [DOI: 10.1021/ol503176y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Liang Zhao
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Jinlian Wang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Hongyan Zheng
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yun Li
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Ke Yang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Bin Cheng
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xiaojie Jin
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xiaojun Yao
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Hongbin Zhai
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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28
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Rodina LL, Medvedev JJ, Galkina OS, Nikolaev VA. Thermolysis of 4-Diazotetrahydrofuran-3-ones: Total Change of Reaction Course Compared to Photolysis. European J Org Chem 2014. [DOI: 10.1002/ejoc.201400161] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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Rao Y, Liu M, Wu L, Yin G. Catalyst-free one-pot domino reactions for selective synthesis of functionalized 2,8-oxazabicyclo[3.3.1]-nonanes and 5H-indeno[1,2-b]pyridin-5-ones. RSC Adv 2014. [DOI: 10.1039/c4ra13166e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A simple and efficient method for one-pot selective synthesis of functionalized 2,8-oxazaxabicyclo[3.3.1]nonanes and hydroxy-containing 5H-indeno[1,2-b]pyridin-5-ones under catalyst-free conditions has been developed.
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Affiliation(s)
- Yin Rao
- Hubei Collaborative Innovation Center for Rare Metal Chemistry
- Hubei Key Laboratory of Pollutant Analysis and Reuse Technology
- Hubei Normal University
- Huangshi 435002, China
| | - Meilin Liu
- Hubei Collaborative Innovation Center for Rare Metal Chemistry
- Hubei Key Laboratory of Pollutant Analysis and Reuse Technology
- Hubei Normal University
- Huangshi 435002, China
| | - Lu Wu
- Hubei Collaborative Innovation Center for Rare Metal Chemistry
- Hubei Key Laboratory of Pollutant Analysis and Reuse Technology
- Hubei Normal University
- Huangshi 435002, China
| | - Guodong Yin
- Hubei Collaborative Innovation Center for Rare Metal Chemistry
- Hubei Key Laboratory of Pollutant Analysis and Reuse Technology
- Hubei Normal University
- Huangshi 435002, China
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30
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Drahl MA, Manpadi M, Williams LJ. C-C fragmentation: origins and recent applications. Angew Chem Int Ed Engl 2013; 52:11222-51. [PMID: 24115282 DOI: 10.1002/anie.201209833] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2012] [Indexed: 11/07/2022]
Abstract
It has been 60 years since Eschenmoser and Frey disclosed the archetypal CC fragmentation reaction. New fragmentations and several variants of the original quickly followed. Many of these variations, which include the Beckmann, Grob, Wharton, Marshall, and Eschenmoser-Tanabe fragmentations, have been reviewed over the intervening years. A close examination of the origins of fragmentation has not been described. Recently, useful new methods have flourished, particularly fragmentations that give alkynes and allenes, and such reactions have been applied to a range of complex motifs and natural products. This Review traces the origins of fragmentation reactions and provides a summary of the methods, applications, and new insights of heterolytic CC fragmentation reactions advanced over the last 20 years.
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Affiliation(s)
- Michael A Drahl
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, NJ 08854 (USA)
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31
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Drahl MA, Manpadi M, Williams LJ. C-C-Fragmentierung: Herkunft und jüngste Anwendungen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209833] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Bent bonds and the antiperiplanar hypothesis as a simple model to predict Diels–Alder reactivity: retrospective or perspective? Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Yin G, Ren T, Rao Y, Zhou Y, Li Z, Shu W, Wu A. Stereoselective Synthesis of 2,8-Dioxabicyclo[3.3.1]nonane Derivatives via a Sequential Michael Addition/Bicyclization Reaction. J Org Chem 2013; 78:3132-41. [DOI: 10.1021/jo400081q] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Guodong Yin
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, PR China
| | - Tianbing Ren
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, PR China
| | - Yin Rao
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, PR China
| | - Yifan Zhou
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, PR China
| | - Zhexian Li
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, PR China
| | - Wenming Shu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, Central China Normal University, Wuhan 430079, PR China
| | - Anxin Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, Central China Normal University, Wuhan 430079, PR China
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34
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Zhu W, Fang J, Liu Y, Ren J, Wang Z. Lewis acid catalyzed formal intramolecular [3+2] cross-cycloaddition of cyclopropane 1,1-diesters with alkenes: general and efficient strategy for construction of bridged [n.2.1] carbocyclic skeletons. Angew Chem Int Ed Engl 2013; 52:2032-7. [PMID: 23307402 DOI: 10.1002/anie.201206484] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2012] [Revised: 12/05/2012] [Indexed: 12/14/2022]
Affiliation(s)
- Wenju Zhu
- State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University, 94# Weijin Road, Tianjin 300071, P.R. China
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35
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Zhu W, Fang J, Liu Y, Ren J, Wang Z. Lewis Acid Catalyzed Formal Intramolecular [3+2] Cross-Cycloaddition of Cyclopropane 1,1-Diesters with Alkenes: General and Efficient Strategy for Construction of Bridged [n
.2.1] Carbocyclic Skeletons. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201206484] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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36
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Rao Y, Yin G. AgOTf-catalyzed reactions of naphthols/substituted phenols with 2-hydroxychalcones: facile synthesis of di-aromatic ring-fused [3.3.1]bicyclic compounds. Org Biomol Chem 2013; 11:6029-35. [DOI: 10.1039/c3ob40860d] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Evans DA, Adams DJ, Kwan EE. Progress toward the Syntheses of (+)-GB 13, (+)-Himgaline, and Himandridine. New Insights into Intramolecular Imine/Enamine Aldol Cyclizations. J Am Chem Soc 2012; 134:8162-70. [DOI: 10.1021/ja3001776] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- David A. Evans
- Department of Chemistry & Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Drew J. Adams
- Department of Chemistry & Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Eugene E. Kwan
- Department of Chemistry & Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
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38
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Stankevič M, Jaklińska M, Pietrusiewicz KM. Michael-Type Addition of Secondary Phosphine Oxides to (1,4-Cyclohexadien-3-yl)phosphine Oxides. J Org Chem 2012; 77:1991-2000. [DOI: 10.1021/jo300026f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marek Stankevič
- Department of Organic Chemistry, Faculty
of Chemistry, Marie Curie-Skłodowska University, Gliniana 33,
20-614 Lublin, Poland
| | - Magdalena Jaklińska
- Department of Organic Chemistry, Faculty
of Chemistry, Marie Curie-Skłodowska University, Gliniana 33,
20-614 Lublin, Poland
| | - K. Michał Pietrusiewicz
- Department of Organic Chemistry, Faculty
of Chemistry, Marie Curie-Skłodowska University, Gliniana 33,
20-614 Lublin, Poland
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39
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Larson RT, Clift MD, Thomson RJ. Total Synthesis of the Galbulimima Alkaloid (−)-GB17. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108227] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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40
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Larson RT, Clift MD, Thomson RJ. Total synthesis of the Galbulimima alkaloid (-)-GB17. Angew Chem Int Ed Engl 2012; 51:2481-4. [PMID: 22287499 DOI: 10.1002/anie.201108227] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Indexed: 11/09/2022]
Affiliation(s)
- Reed T Larson
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd, Evanston, IL 60208, USA
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41
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42
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Hierold J, Hsia T, Lupton DW. The Grob/Eschenmoser fragmentation of cycloalkanones bearing β-electron withdrawing groups: a general strategy to acyclic synthetic intermediates. Org Biomol Chem 2011; 9:783-92. [DOI: 10.1039/c0ob00632g] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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43
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Bradford TA, Willis AC, White JM, Herlt AJ, Taylor WC, Mander LN. The structures of four new himbacine-like Galbulimima alkaloids. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.10.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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44
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Zi W, Yu S, Ma D. A convergent route to the Galbulimima alkaloids (-)-GB 13 and (+)-GB 16. Angew Chem Int Ed Engl 2010; 49:5887-90. [PMID: 20629004 DOI: 10.1002/anie.201002299] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Weiwei Zi
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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45
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Zi W, Yu S, Ma D. Synthetic Studies toward Galbulimima Alkaloid (−)-GB 13 and (+)-GB 16 and (−)-Himgaline. Chem Asian J 2010; 6:573-9. [DOI: 10.1002/asia.201000556] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Indexed: 11/11/2022]
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46
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Shaabani A, Maleki A, Rezayan AH, Sarvary A. Recent progress of isocyanide-based multicomponent reactions in Iran. Mol Divers 2010; 15:41-68. [PMID: 20669047 DOI: 10.1007/s11030-010-9258-1] [Citation(s) in RCA: 162] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2009] [Accepted: 07/02/2010] [Indexed: 11/24/2022]
Affiliation(s)
- Ahmad Shaabani
- Department of Chemistry, Shahid Beheshti University, P. O. Box 19396-4716, Tehran, Iran.
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47
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Zi W, Yu S, Ma D. A Convergent Route to the Galbulimima Alkaloids (−)-GB 13 and (+)-GB 16. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201002299] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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48
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Larson KK, Sarpong R. Total synthesis of alkaloid (+/-)-G. B. 13 using a Rh(I)-catalyzed ketone hydroarylation and late-stage pyridine reduction. J Am Chem Soc 2010; 131:13244-5. [PMID: 19754185 DOI: 10.1021/ja9063487] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Total synthesis of the Galbulimima alkaloid G. B. 13 was achieved utilizing a functionalized pyridine moiety as a piperidine surrogate. Key to the success of the synthesis was the development of an unprecedented rhodium-catalyzed 1,2-addition of an arylboronic ester into an unactivated ketone.
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Affiliation(s)
- Kimberly K Larson
- Department of Chemistry, University of California, Berkeley, California 94720, USA
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49
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McLachlan MMW, O'Connor PD, Fairweather KA, Willis AC, Mander LN. Total Synthesis of the Galbulimima Alkaloid (±)-GB 13. Aust J Chem 2010. [DOI: 10.1071/ch10056] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The synthesis of alkaloid GB 13 (4), isolated from the North Australian rain forest tree Galbulimima belgraveana is described. Birch reductive alkylation of 2,5-dimethoxybenzoic acid by 3-methoxybenzyl bromide, followed by an acid-catalyzed cyclization was used to synthesize the [3.3.1]bicyclononane 12. Ring contraction performed on the diazoketone 19 followed by a Diels–Alder reaction generated a pentacyclic intermediate 34 with a carbon skeleton closely resembling the target alkaloid. The surplus nitrile substituent, required for activation and regioselectivity in the Diels–Alder reaction, was removed by treatment with lithium and liquid ammonia. Birch reduction of the aromatic ring could be performed at the same time to give diene 38 and thence enone 41, which was cleaved by means of an Eschenmoser fragmentation. The piperidine ring found in the natural product was formed by reductive cyclization of bis-oxime 49 derived from the alkynyl ketone 48 and the resulting material further elaborated to GB 13.
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50
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Hayden AE, DeChancie J, George AH, Dai M, Yu M, Danishefsky SJ, Houk KN. Origins of the regioselectivities in the Diels-Alder reactions of vinylindenes with 1,4-quinone monoketal and acrolein dienophiles. J Org Chem 2009; 74:6770-6. [PMID: 19663431 DOI: 10.1021/jo901473h] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Computations with density functional theory (B3LYP/6-31G(d)) have elucidated the origins of regioselectivities in the Diels-Alder reaction of vinylindene with a 1,4-quinone monoketal reaction that was employed as the key step in the synthesis of fluostatin C. Frontier Molecular Orbital theory and an electrostatic model are applied to the reactions of alkyl-substituted and vinylindene dienes with 1,4-quinone monoketal and acrolein dienophiles. Regiochemical results that deviate from expectation are explained by a progression from electronic to steric control upon the addition of a Lewis acid catalyst.
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Affiliation(s)
- Amy E Hayden
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive, Los Angeles, California 90095-1569, USA
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