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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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2
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Watanabe T. Chemical Studies on Bioactive Natural Products Directed toward Development of Novel Antiinfective and Anticancer Medicines. Chem Pharm Bull (Tokyo) 2019; 67:620-631. [PMID: 31257316 DOI: 10.1248/cpb.c19-00215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Natural products are still rich sources of clinically used medicines and lead compounds for them. This review summarizes chemical studies carried out by the author on natural products of microorganism origin, many of which were discovered at the Institute of Microbial Chemistry (BIKAKEN). Caprazamycin B is a liponucleoside antibiotic from which CPZEN-45, an antituberculosis agent with a unique mode of action, was developed. Intervenolin and leucinostatin A exert antiproliferative activity toward tumor cells in the presence of the corresponding stromal cells, which implies that the primary molecular targets of these molecules should be related to growth signals from normal (stromal) cells. Details of the endeavors to establish efficient synthetic routes to these compounds which accelerated structure-activity relationship studies and further evaluation of biological activity are described.
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Karasawa T, Saito A, Kumagai N, Shibasaki M. Solvent-Dependent Enantiodivergence in anti-Selective Catalytic Asymmetric Nitroaldol Reactions. Org Lett 2019; 21:3581-3583. [PMID: 30995054 DOI: 10.1021/acs.orglett.9b00982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
anti-Selective catalytic asymmetric nitroaldol reactions of α-keto esters promoted by a heterogeneous Nd/Na heterobimetallic catalyst exhibited a significant, unexpected disparity in enantioselection that was solvent-dependent. This phenomenon exclusively occurred when the stereogenic center of a diamide ligand had the smallest substituent (Me group, derived from l-Ala), which behaved uniquely in comparison with other structurally similar ligands to provide antipodal products under otherwise identical conditions.
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Affiliation(s)
- Tomoya Karasawa
- Institute of Microbial Chemistry (BIKAKEN) , 3-14-23 Kamiosaki , Shinagawa-ku, Tokyo 141-0021 , Japan
| | - Akira Saito
- Institute of Microbial Chemistry (BIKAKEN) , 3-14-23 Kamiosaki , Shinagawa-ku, Tokyo 141-0021 , Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN) , 3-14-23 Kamiosaki , Shinagawa-ku, Tokyo 141-0021 , Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN) , 3-14-23 Kamiosaki , Shinagawa-ku, Tokyo 141-0021 , Japan
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Malatinský T, Otočková B, Dikošová L, Fischer R. A Convenient Synthetic Route towards 3,5‐Bis(hydroxymethyl)pyrrolizidines: Stereoselective Synthesis of Unnatural (–)‐Hyacinthacine B 2. ChemistrySelect 2019. [DOI: 10.1002/slct.201900529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Tomáš Malatinský
- Institute of Organic Chemistry, Catalysis and PetrochemistrySlovak University of Technology in Bratislava Radlinského 9 812 37 Bratislava Slovak Republic
| | - Barbora Otočková
- Institute of Organic Chemistry, Catalysis and PetrochemistrySlovak University of Technology in Bratislava Radlinského 9 812 37 Bratislava Slovak Republic
| | - Lívia Dikošová
- Institute of Organic Chemistry, Catalysis and PetrochemistrySlovak University of Technology in Bratislava Radlinského 9 812 37 Bratislava Slovak Republic
| | - Róbert Fischer
- Institute of Organic Chemistry, Catalysis and PetrochemistrySlovak University of Technology in Bratislava Radlinského 9 812 37 Bratislava Slovak Republic
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Đud M, Glasovac Z, Margetić D. The utilization of ball milling in synthesis of aryl guanidines through guanidinylation and N-Boc-deprotection sequence. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.11.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Dixit A, Kumar P, Singh S. Synthesis of chiral salalen ligands and their in-situ generated Cu-complexes for asymmetric Henry reaction. Chirality 2018; 30:1257-1268. [PMID: 30238505 DOI: 10.1002/chir.23019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 08/23/2018] [Accepted: 08/23/2018] [Indexed: 11/11/2022]
Abstract
Chiral salalen ligands derived from (S)-proline and derivatives of salicyaldehydes were synthesized, and their in-situ generated Cu (II) complexes were evaluated in the asymmetric Henry reaction. Salalen ligand of different substituents on the phenyl moiety showed remarkable effect on the enantioselectivity of nitro-aldol product of 4-nitrobenzaldehyde and nitromethane. Cu (II) complex generated in situ with (S)-2-(tert-butyl)-6-((2-(((2-hydroxy-3-methylbenzylidene)amino)methyl)pyrrolidin-1-yl)methyl) phenol (10 mol%) and Cu (OAc)2 .H2 O (10 mol%), found to be better catalyst for nitro-aldol reaction between 4-nitrobenzaldehyde and nitromethane, gave corresponding product in 85% yield and 88% enantiomeric excess (ee) in isopropanol at 35°C after 40 hours. The catalyst also used for the Henry reaction with different substituted benzaldehydes and corresponding products were obtained in 22% to 99% yields with 66% to 92% ee. Henry reaction of 4-nitrobenzaldehyde and prochiral nitroethane gave anti-selective product (dr = 79/21; anti/syn) in a 91% yield with 80% ee.
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Affiliation(s)
- Ashish Dixit
- Department of Chemistry, University of Delhi, North Campus, Delhi, India
| | - Pramod Kumar
- Department of Chemistry, University of Delhi, North Campus, Delhi, India
| | - Surendra Singh
- Department of Chemistry, University of Delhi, North Campus, Delhi, India
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Watanabe T, Shibasaki M. Catalytic Asymmetric Synthesis of Natural Products Directed Toward Development of Novel Anti-infective and Anti-cancer Medicines. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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8
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Asymmetric Henry reaction catalyzed by chiral Cu(II) salalen and salan complexes derived from ( S )-proline. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.04.048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Xiao A, Li Y, Li X, Santra A, Yu H, Li W, Chen X. Sialidase-catalyzed one-pot multienzyme (OPME) synthesis of sialidase transition-state analogue inhibitors. ACS Catal 2018; 8:43-47. [PMID: 29713561 PMCID: PMC5920526 DOI: 10.1021/acscatal.7b03257] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Sialidase transition state analog inhibitor 2,3-dehydro-2-deoxy-N-acetylneuraminic acid (Neu5Ac2en, DANA) has played a leading role in developing clinically used anti-influenza virus drugs. Taking advantage of the Neu5Ac2en-forming catalytic property of Streptococcus pneumoniae sialidase SpNanC, an effective one-pot multienzyme (OPME) strategy has been developed to directly access Neu5Ac2en and its C-5, C-9, and C-7-analogs from N-acetylmannosamine (ManNAc) and analogs. The obtained Neu5Ac2en analogs can be further derivatized at various positions to generate a larger inhibitor library. Inhibition studies demonstrated improved selectivity of several C-5- or C-9-modified Neu5Ac2en derivatives against several bacterial sialidases. The study provides an efficient enzymatic method to access sialidase inhibitors with improved selectivity.
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Affiliation(s)
- An Xiao
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Yanhong Li
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Xixuan Li
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Abhishek Santra
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Hai Yu
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Wanqing Li
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Xi Chen
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
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Karasawa T, Kumagai N, Shibasaki M. Heterogeneous Heterobimetallic Catalysis Enabling Expeditious Access to CF3-Containing vic-Amino Alcohols. Org Lett 2017; 20:308-311. [DOI: 10.1021/acs.orglett.7b03767] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tomoya Karasawa
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23
Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23
Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23
Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
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12
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Asymmetric flow catalysis: Mix-and-go solid-phase Nd/Na catalyst for expeditious enantioselective access to a key intermediate of AZD7594. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.066] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Kumagai N, Shibasaki M. Strategic Immobilization of Molecular Catalysts onto Carbon Nanotubes via Noncovalent Interaction for Catalytic Organic Transformations. Isr J Chem 2016. [DOI: 10.1002/ijch.201600126] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN), Tokyo; 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), Tokyo; 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021 Japan
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Laborda P, Wang SY, Voglmeir J. Influenza Neuraminidase Inhibitors: Synthetic Approaches, Derivatives and Biological Activity. Molecules 2016; 21:E1513. [PMID: 27845731 PMCID: PMC6274581 DOI: 10.3390/molecules21111513] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 11/02/2016] [Accepted: 11/03/2016] [Indexed: 11/16/2022] Open
Abstract
Despite being a common viral disease, influenza has very negative consequences, causing the death of around half a million people each year. A neuraminidase located on the surface of the virus plays an important role in viral reproduction by contributing to the release of viruses from infected host cells. The treatment of influenza is mainly based on the administration of neuraminidase inhibitors. The neuraminidase inhibitors zanamivir, laninamivir, oseltamivir and peramivir have been commercialized and have been demonstrated to be potent influenza viral neuraminidase inhibitors against most influenza strains. In order to create more potent neuraminidase inhibitors and fight against the surge in resistance resulting from naturally-occurring mutations, these anti-influenza drugs have been used as templates for the development of new neuraminidase inhibitors through structure-activity relationship studies. Here, we review the synthetic routes to these commercial drugs, the modifications which have been performed on these structures and the effects of these modifications on their inhibitory activity.
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Affiliation(s)
- Pedro Laborda
- Glycomics and Glycan Bioengineering Research Center, College of Food Science and Technology, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China.
| | - Su-Yan Wang
- Glycomics and Glycan Bioengineering Research Center, College of Food Science and Technology, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China.
| | - Josef Voglmeir
- Glycomics and Glycan Bioengineering Research Center, College of Food Science and Technology, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China.
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15
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Stereoselective reactions of nitro compounds in the synthesis of natural compound analogs and active pharmaceutical ingredients. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.067] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Filippova L, Antonsen S, Stenstrøm Y, Hansen TV. Synthesis of obscuraminol A using an organocatalyzed enantioselective Henry reaction. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.08.070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Lin LZ, Fang JM. Total Synthesis of Anti-Influenza Agents Zanamivir and Zanaphosphor via Asymmetric Aza-Henry Reaction. Org Lett 2016; 18:4400-3. [PMID: 27541804 DOI: 10.1021/acs.orglett.6b02131] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The potent anti-influenza agents, zanamivir and its phosphonate congener, are synthesized by using a nitro group as the latent amino group at C4 for asymmetric aza-Henry reaction with a chiral sulfinylimine, which is derived from inexpensive d-glucono-δ-lactone to establish the essential nitrogen-containing substituent at C5. This method provides an efficient way to construct the densely substituted dihydropyran core of zanamivir and zanaphosphor without using the hazardous azide reagent.
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Affiliation(s)
- Long-Zhi Lin
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan
| | - Jim-Min Fang
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan.,The Genomics Research Center, Academia Sinica , Taipei 115, Taiwan
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19
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Zhang WX, Xu L, Xi Z. Recent development of synthetic preparation methods for guanidines via transition metal catalysis. Chem Commun (Camb) 2015; 51:254-65. [DOI: 10.1039/c4cc05291a] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This article provides an overview of guanidine synthesis via transition-metal-catalyzed reactions including cycloaddition, guanylation and tandem guanylation/cyclization.
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Affiliation(s)
- Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences
- and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871
| | - Ling Xu
- Beijing National Laboratory for Molecular Sciences
- and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences
- and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871
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21
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Dimroth J, Weck M. Co–salen complexes as catalysts for the asymmetric Henry reaction – reversed enantioselectivity through simple ligand modification. RSC Adv 2015. [DOI: 10.1039/c4ra16931j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Derivatives of Co-salen catalysts were tested in the asymmetric Henry reaction. Cyclic oligomers displayed a higher catalytic activity than their monomeric counterparts, and reduced Schiff-base versions showed a reversed enantioselectivity.
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Affiliation(s)
- J. Dimroth
- Molecular Design Institute and Department of Chemistry
- New York University
- New York
- USA
| | - M. Weck
- Molecular Design Institute and Department of Chemistry
- New York University
- New York
- USA
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Mahmudov KT, Guedes da Silva MFC, Sutradhar M, Kopylovich MN, Huseynov FE, Shamilov NT, Voronina AA, Buslaeva TM, Pombeiro AJL. Lanthanide derivatives comprising arylhydrazones of β-diketones: cooperative E/Z isomerization and catalytic activity in nitroaldol reaction. Dalton Trans 2015; 44:5602-10. [DOI: 10.1039/c4dt03788j] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
RAHB and ionic interaction assisted E/Z→E isomerization of arylhydrazone of β-diketone is reported.
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Affiliation(s)
- Kamran T. Mahmudov
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisbon
- Portugal
| | | | - Manas Sutradhar
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisbon
- Portugal
| | - Maximilian N. Kopylovich
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisbon
- Portugal
| | - Fatali E. Huseynov
- Department of Ecology and Soil Sciences
- Baku State University
- Az 1148 Baku
- Azerbaijan
| | - Nazim T. Shamilov
- Department of Ecology and Soil Sciences
- Baku State University
- Az 1148 Baku
- Azerbaijan
| | - Anna A. Voronina
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisbon
- Portugal
| | - Tatyana M. Buslaeva
- Lomonosov Moscow University of Fine Chemical Technology
- Moscow 119571
- Russian Federation
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisbon
- Portugal
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Chiral Bimetallic Lewis Acids. TOP ORGANOMETAL CHEM 2015. [DOI: 10.1007/3418_2015_153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Tian J, Zhong J, Li Y, Ma D. Organocatalytic and Scalable Synthesis of the Anti-Influenza Drugs Zanamivir, Laninamivir, and CS-8958. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408138] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Tian J, Zhong J, Li Y, Ma D. Organocatalytic and Scalable Synthesis of the Anti-Influenza Drugs Zanamivir, Laninamivir, and CS-8958. Angew Chem Int Ed Engl 2014; 53:13885-8. [DOI: 10.1002/anie.201408138] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Indexed: 12/15/2022]
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Kannan M, Punniyamurthy T. Effect of ligand N,N-substituents on the reactivity of chiral copper(II) salalen, salan, and salalan complexes toward asymmetric nitroaldol reactions. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.07.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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27
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Bao Y, Kumagai N, Shibasaki M. Design and synthesis of a bis(hydroxyphenyl)diamide bearing a pendant thiazolium unit; application to the catalytic asymmetric intramolecular Stetter reaction. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.09.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wei YL, Yang KF, Li F, Zheng ZJ, Xu Z, Xu LW. Probing the evolution of an Ar-BINMOL-derived salen–Co(iii) complex for asymmetric Henry reactions of aromatic aldehydes: salan–Cu(ii) versus salen–Co(iii) catalysis. RSC Adv 2014. [DOI: 10.1039/c4ra06056c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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Gopinath P, Wang L, Abe H, Ravi G, Masuda T, Watanabe T, Shibasaki M. Catalytic asymmetric total synthesis of (+)-caprazol. Org Lett 2014; 16:3364-7. [PMID: 24897294 DOI: 10.1021/ol501397b] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Catalytic asymmetric total synthesis of caprazol, a lipo-nucleoside antibiotic, has been accomplished employing two of the stereoselective C-C bond forming reactions as key transformations. The stereochemistries of the β-hydroxy-α-aminoester moiety at the juncture of the uridine part and diazepanone part, and of the β-hydroxy-α-amino acid moiety embedded in the diazepanone system, were constructed using a diastereoselective isocyanoacetate aldol reaction (dr = 88:12) and an enantioselective anti-nitroaldol reaction catalyzed by a Nd/Na-chiral amide ligand (dr = 12:1, 95% ee), respectively.
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Affiliation(s)
- Purushothaman Gopinath
- Institute of Microbial Chemistry (BIKAKEN), Tokyo , 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
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Sartori A, Dell'Amico L, Battistini L, Curti C, Rivara S, Pala D, Kerry PS, Pelosi G, Casiraghi G, Rassu G, Zanardi F. Synthesis, structure and inhibitory activity of a stereoisomer of oseltamivir carboxylate. Org Biomol Chem 2014; 12:1561-9. [DOI: 10.1039/c3ob42069h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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31
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Das A, Kureshy RI, Subramanian PS, Khan NUH, Abdi SHR, Bajaj HC. Synthesis and characterization of chiral recyclable dimeric copper(ii)–salen complexes and their catalytic application in asymmetric nitroaldol (Henry) reaction. Catal Sci Technol 2014. [DOI: 10.1039/c3cy00638g] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Scharnagel D, Prause F, Kaldun J, Haase RG, Breuning M. (2S,5R)-2-Methylaminomethyl-1-methyl-5-phenylpyrrolidine, a chiral diamine ligand for copper(ii)-catalysed Henry reactions with superb enantiocontrol. Chem Commun (Camb) 2014; 50:6623-5. [DOI: 10.1039/c4cc02429j] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Copper(ii)-complexes of a cis-2-aminomethyl-5-phenylpyrrolidine catalyse enantioselective Henry reactions with extraordinarily high stereocontrol.
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Affiliation(s)
- Dagmar Scharnagel
- Organic Chemistry Laboratory
- University of Bayreuth
- 95447 Bayreuth, Germany
| | - Felix Prause
- Organic Chemistry Laboratory
- University of Bayreuth
- 95447 Bayreuth, Germany
| | - Johannes Kaldun
- Organic Chemistry Laboratory
- University of Bayreuth
- 95447 Bayreuth, Germany
| | - Robert G. Haase
- Organic Chemistry Laboratory
- University of Bayreuth
- 95447 Bayreuth, Germany
| | - Matthias Breuning
- Organic Chemistry Laboratory
- University of Bayreuth
- 95447 Bayreuth, Germany
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Zhang L, Wu H, Yang Z, Xu X, Zhao H, Huang Y, Wang Y. Synthesis and computation of diastereomeric phenanthroline–quinine ligands and their application in asymmetric Henry reaction. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.10.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Shie JJ, Fang JM. Phosphonate Congeners of Oseltamivir and Zanamivir as Effective Anti-influenza Drugs: Design, Synthesis and Biological Activity. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.201300544] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Sureshkumar D, Hashimoto K, Kumagai N, Shibasaki M. A Modified Preparation Procedure for Carbon Nanotube-Confined Nd/Na Heterobimetallic Catalyst for anti-Selective Catalytic Asymmetric Nitroaldol Reactions. J Org Chem 2013; 78:11494-500. [DOI: 10.1021/jo402042s] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Devarajulu Sureshkumar
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Kazuki Hashimoto
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
- JST, ACT-C, 3-14-23 Kamiosaki,
Shinagawa-ku, Tokyo 141-0021, Japan
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36
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Wolińska E. Chiral oxazoline ligands containing a 1,2,4-triazine ring and their application in the Cu-catalyzed asymmetric Henry reaction. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.084] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Zhou Y, Zhu Y, Yan S, Gong Y. Copper-Catalyzed Enantioselective Henry Reaction of Enals and Subsequent Iodocyclization: Stereoselective Construction of Chiral Azatricyclic Frameworks. Angew Chem Int Ed Engl 2013; 52:10265-9. [DOI: 10.1002/anie.201305148] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Indexed: 11/08/2022]
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Zhou Y, Zhu Y, Yan S, Gong Y. Copper-Catalyzed Enantioselective Henry Reaction of Enals and Subsequent Iodocyclization: Stereoselective Construction of Chiral Azatricyclic Frameworks. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305148] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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39
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Synthesis of C 1-symmetric primary-secondary diamines and their application in the enantioselective Henry reaction. Front Chem Sci Eng 2013. [DOI: 10.1007/s11705-013-1343-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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40
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Ogawa T, Kumagai N, Shibasaki M. Self-Assembling Neodymium/Sodium Heterobimetallic Asymmetric Catalyst Confined in a Carbon Nanotube Network. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302236] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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41
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Ogawa T, Kumagai N, Shibasaki M. Self-assembling neodymium/sodium heterobimetallic asymmetric catalyst confined in a carbon nanotube network. Angew Chem Int Ed Engl 2013; 52:6196-201. [PMID: 23640848 DOI: 10.1002/anie.201302236] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Indexed: 12/12/2022]
Affiliation(s)
- Takanori Ogawa
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
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Kumagai N, Shibasaki M. Catalytic chemical transformations with conformationally dynamic catalytic systems. Catal Sci Technol 2013. [DOI: 10.1039/c2cy20257c] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kumagai N, Shibasaki M. Asymmetrische Katalyse mit Bis(hydroxyphenyl)diamid/Seltenerdmetall-Komplexen. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206582] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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44
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Asymmetric Catalysis with Bis(hydroxyphenyl)diamides/Rare-Earth Metal Complexes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/anie.201206582] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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45
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Xu K, Lai G, Zha Z, Pan S, Chen H, Wang Z. A Highlyanti-Selective Asymmetric Henry Reaction Catalyzed by a Chiral Copper Complex: Applications to the Syntheses of (+)-Spisulosine and a Pyrroloisoquinoline Derivative. Chemistry 2012; 18:12357-62. [DOI: 10.1002/chem.201201775] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2012] [Indexed: 12/13/2022]
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46
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Qin DD, Lai WH, Hu D, Chen Z, Wu AA, Ruan YP, Zhou ZH, Chen HB. Highly Enantioselective Henry Reactions of Aromatic Aldehydes Catalyzed by an Amino Alcohol-Copper(II) Complex. Chemistry 2012; 18:10515-8. [DOI: 10.1002/chem.201201565] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Indexed: 11/06/2022]
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Sohtome Y, Nagasawa K. Dynamic asymmetric organocatalysis: cooperative effects of weak interactions and conformational flexibility in asymmetric organocatalysts. Chem Commun (Camb) 2012; 48:7777-89. [PMID: 22737686 DOI: 10.1039/c2cc31846f] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review describes recent advances by our research group in the design and applications of conformationally flexible guanidine/bisthiourea organocatalysts to facilitate unique bond-forming processes, including retro-free, enantiodivergent, entropy-controlled, and cycle-specific organocatalysis. Special emphasis is placed on the key requirements to attain high selectivity and on functional switching by exploiting the structural flexibility of our organocatalysts.
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Affiliation(s)
- Yoshihiro Sohtome
- Department of Biotechnology and Life Science, Faculty of Technology, Tokyo University of Agriculture and Technology, 2-24-26 Naka-cho, Koganei, Tokyo, Japan
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