1
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Wang D, Cao FR, Lu G, Ren J, Zeng BB. Practical acetalization and transacetalization of carbonyl compounds catalyzed by recyclable PVP-I. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Liu X, Li S, Wei X, Zhao Y, Lai D, Zhou L, Wang M. Total synthesis of Palmarumycin BGs, C 1 and Guignardin E. RSC Adv 2020; 10:1588-1594. [PMID: 35494718 PMCID: PMC9047396 DOI: 10.1039/c9ra10316c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 12/19/2019] [Indexed: 11/21/2022] Open
Abstract
The first total synthesis of Palmarumycin BG1–3, BG5–6, C1 and Guignardin E (1–7) were achieved by the same intermediate Palmarumycin C2 through a N-benzyl cinchoninium chloride-catalyzed epoxidation, an organoselenium-mediated reduction, and a cerium(iii) chloride hydrate-promoted regioselective ring-opening and elimination of cyclic α,β-epoxy ketone as the key steps via6–7 step routes using 1,8-dihydroxynaphthalene (DHN) and 5-methoxytetralone as the starting materials in overall yields of 1.0–17.4%, respectively. Their structures and absolute configurations were characterized and determined by 1H, 13C NMR, IR, HR-ESI-MS and X-ray diffraction data. These compounds displayed significant inhibition activities against HCT116, U87-MG, HepG2, BGC823 and PC9 cell lines. The first total syntheses of Palmarumycin BG1–3, BG5–6, C1 and Guignardin E were achieved. These compounds displayed significant inhibition activities against HCT116, U87-MG, HepG2, BGC823 and PC9 cell lines.![]()
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Affiliation(s)
- Xinlei Liu
- Department of Applied Chemistry, College of Sciences, China Agricultural University Beijing 100193 People's Republic of China
| | - Shuyi Li
- Department of Applied Chemistry, College of Sciences, China Agricultural University Beijing 100193 People's Republic of China
| | - Xinyu Wei
- Department of Applied Chemistry, College of Sciences, China Agricultural University Beijing 100193 People's Republic of China
| | - Yu Zhao
- Department of Applied Chemistry, College of Sciences, China Agricultural University Beijing 100193 People's Republic of China
| | - Daowan Lai
- Department of Plant Pathology, College of Plant Protection, China Agricultural University Beijing 100193 People's Republic of China
| | - Ligang Zhou
- Department of Plant Pathology, College of Plant Protection, China Agricultural University Beijing 100193 People's Republic of China
| | - Mingan Wang
- Department of Applied Chemistry, College of Sciences, China Agricultural University Beijing 100193 People's Republic of China
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3
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Ninomiya M, Ando Y, Kudo F, Ohmori K, Suzuki K. Total Synthesis of Actinorhodin. Angew Chem Int Ed Engl 2019; 58:4264-4270. [DOI: 10.1002/anie.201814172] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Mamiko Ninomiya
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Yoshio Ando
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Fumitaka Kudo
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Ken Ohmori
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Keisuke Suzuki
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
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4
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Ninomiya M, Ando Y, Kudo F, Ohmori K, Suzuki K. Total Synthesis of Actinorhodin. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814172] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Mamiko Ninomiya
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Yoshio Ando
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Fumitaka Kudo
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Ken Ohmori
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Keisuke Suzuki
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
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5
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Sun W, Jiang F, Liu H, Gao X, Jia H, Zhang C, Guo H. Double [3 + 2] cycloaddition of nitrile oxides with allenoates: Synthesis of spirobidihydroisoxazoles. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.04.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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6
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Takikawa H, Suzuki K. Synthetic Strategy toward Dearomatized Polycyclic Polyketide Natural Products. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.13] [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]
Affiliation(s)
| | - Keisuke Suzuki
- Department of Chemistry, School of Science, Tokyo Institute of Technology
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7
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Mason JD, Weinreb SM. The Alstoscholarisine Alkaloids: Isolation, Structure Determination, Biogenesis, Biological Evaluation, and Synthesis. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2018; 81:115-150. [PMID: 30685049 DOI: 10.1016/bs.alkal.2018.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The alstoscholarisines are a small family of biologically and structurally interesting polycyclic monoterpenoid indole alkaloids isolated from the leaf extracts of Alstonia scholaris. The alkaloids can be divided into three different subtypes based upon their structures and putative biogenesis: (1) (-)-alstoscholarisines A-E, (2) (+)-alstoscholarisine G, and (3) (+)-alstoscholarisines H-J. This review discusses the isolation, structure determination, biological activity, and proposed biosynthesis of these metabolites. In addition, synthetic studies on the alkaloids are described including total syntheses of racemic alstoscholarisines A-E, a total synthesis of (-)-alstoscholarisine A, and a synthesis of racemic alstoscholarisine H.
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Affiliation(s)
- Jeremy D Mason
- Department of Chemistry, The Pennsylvania State University, University Park, PA, United States
| | - Steven M Weinreb
- Department of Chemistry, The Pennsylvania State University, University Park, PA, United States.
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8
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Zhang XM, Tu YQ, Zhang FM, Chen ZH, Wang SH. Recent applications of the 1,2-carbon atom migration strategy in complex natural product total synthesis. Chem Soc Rev 2018; 46:2272-2305. [PMID: 28349159 DOI: 10.1039/c6cs00935b] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
1,2-Carbon atom rearrangement has been broadly applied as a guiding strategy in complex molecule assembly. As it entails the carbon-carbon or carbon-heteroatom bond migration between two vicinal atoms, this type of reaction is capable of generating structural complexity through a molecular skeletal reorganization. This review will focus on recent employment of this strategy in the total synthesis of natural products, highlighting the exceptional utility of such synthetic methodologies in the construction of intricate carbocycles, heterocycles or structurally complex motifs from synthetically more accessible precursors.
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Affiliation(s)
- Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
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9
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Mason JD, Weinreb SM. Synthesis of Alstoscholarisines A-E, Monoterpene Indole Alkaloids with Modulating Effects on Neural Stem Cells. J Org Chem 2018; 83:5877-5896. [PMID: 29733650 DOI: 10.1021/acs.joc.8b00889] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A divergent synthetic strategy has been developed for stereoselective total syntheses of alstoscholarisines A-E, monoterpenoid indole alkaloids which are modulators of adult neuronal stem cells. A pivotal step includes an intermolecular Michael addition of an indole-2-acetic acid methyl ester enolate to an α,β-unsaturated N-sulfonyllactam to form the C15, C16 bond of the alkaloids. Other features of the strategy involve a selective partial reduction of an intermediate N-sulfonyllactam followed by cyclization to a bridged aminal system that serves as a key precursor for all five of the alkaloids as well as the use of an allyl group as a masked aldehyde equivalent.
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Affiliation(s)
- Jeremy D Mason
- Department of Chemistry , The Pennsylvania State University University Park , Pennsylvania 16802 , United States
| | - Steven M Weinreb
- Department of Chemistry , The Pennsylvania State University University Park , Pennsylvania 16802 , United States
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10
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Takikawa H. Trial and Error in Total Synthesis of Polyketide-derived Polycyclic Natural Products. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.478] [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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11
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Mason JD, Weinreb SM. Total Syntheses of the Monoterpenoid Indole Alkaloids (±)-Alstoscholarisine B and C. Angew Chem Int Ed Engl 2017; 56:16674-16676. [DOI: 10.1002/anie.201710943] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Jeremy D. Mason
- Department of Chemistry; The Pennsylvania State University; University Park PA 16802 USA
| | - Steven M. Weinreb
- Department of Chemistry; The Pennsylvania State University; University Park PA 16802 USA
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12
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Mason JD, Weinreb SM. Total Syntheses of the Monoterpenoid Indole Alkaloids (±)-Alstoscholarisine B and C. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201710943] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jeremy D. Mason
- Department of Chemistry; The Pennsylvania State University; University Park PA 16802 USA
| | - Steven M. Weinreb
- Department of Chemistry; The Pennsylvania State University; University Park PA 16802 USA
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13
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Zhao X, Zhang Y, Deng J, Zhang-Negrerie D, Du Y. TBHP/TBAI-Mediated Oxidative Cascade Reaction Consisting of Dimerization, Cyclization, and 1,2-Aryl Migration: Metal-Free Synthesis of Pyrrolin-4-ones and Highly Substituted Pyrroles. J Org Chem 2017; 82:12682-12690. [DOI: 10.1021/acs.joc.7b02491] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaoyuan Zhao
- Tianjin
Key Laboratory for Modern Drug Delivery and High-Efficiency, School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yong Zhang
- Tianjin
Key Laboratory for Modern Drug Delivery and High-Efficiency, School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Jun Deng
- School
of Pharmaceutical Sciences and Innovative Drug Research Centre, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing 401331, China
| | - Daisy Zhang-Negrerie
- Tianjin
Key Laboratory for Modern Drug Delivery and High-Efficiency, School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yunfei Du
- Tianjin
Key Laboratory for Modern Drug Delivery and High-Efficiency, School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
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14
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Sato S, Sakata K, Hashimoto Y, Takikawa H, Suzuki K. First Total Syntheses of Tetracenomycins C and X. Angew Chem Int Ed Engl 2017; 56:12608-12613. [PMID: 28762249 DOI: 10.1002/anie.201707099] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Shogo Sato
- Department of Chemistry Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Keiichiro Sakata
- Department of Chemistry Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Yoshimitsu Hashimoto
- Department of Chemistry Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
- Present address: Showa Pharmaceutical University 3-3165 Higashi-Tamagawagakuen, Machida Tokyo 194-8543 Japan
| | - Hiroshi Takikawa
- Department of Chemistry Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
- Present address: Graduate School of Pharmaceutical Sciences Kyoto University Yoshida, Sakyo-ku Kyoto 606-8501 Japan
| | - Keisuke Suzuki
- Department of Chemistry Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
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15
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Sato S, Sakata K, Hashimoto Y, Takikawa H, Suzuki K. First Total Syntheses of Tetracenomycins C and X. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707099] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shogo Sato
- Department of Chemistry Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Keiichiro Sakata
- Department of Chemistry Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Yoshimitsu Hashimoto
- Department of Chemistry Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
- Present address: Showa Pharmaceutical University 3-3165 Higashi-Tamagawagakuen, Machida Tokyo 194-8543 Japan
| | - Hiroshi Takikawa
- Department of Chemistry Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
- Present address: Graduate School of Pharmaceutical Sciences Kyoto University Yoshida, Sakyo-ku Kyoto 606-8501 Japan
| | - Keisuke Suzuki
- Department of Chemistry Tokyo Institute of Technology 2-12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
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16
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Takikawa H, Sato S, Seki R, Suzuki K. Oxidative Ring Opening of Benzocyclobutenone Oximes: Novel Access to Stable Nitrile Oxides. CHEM LETT 2017. [DOI: 10.1246/cl.170328] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hiroshi Takikawa
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551
| | - Shogo Sato
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551
| | - Ryota Seki
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551
| | - Keisuke Suzuki
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551
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17
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A brief history of antibiotics and select advances in their synthesis. J Antibiot (Tokyo) 2017; 71:153-184. [DOI: 10.1038/ja.2017.62] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 04/17/2017] [Accepted: 04/23/2017] [Indexed: 12/20/2022]
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18
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Hayashi T, Ohmori K, Suzuki K. Synthetic Study on Carthamin. 2. Stereoselective Approach to C-Glycosyl Quinochalcone via Desymmetrization. Org Lett 2017; 19:866-869. [DOI: 10.1021/acs.orglett.6b03899] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Taiki Hayashi
- Department of Chemistry, Tokyo Institute of Technology, O-okayama,
Meguro-ku, Tokyo 152-8551, Japan
| | - Ken Ohmori
- Department of Chemistry, Tokyo Institute of Technology, O-okayama,
Meguro-ku, Tokyo 152-8551, Japan
| | - Keisuke Suzuki
- Department of Chemistry, Tokyo Institute of Technology, O-okayama,
Meguro-ku, Tokyo 152-8551, Japan
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19
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Nicolaou KC, Rigol S. The Evolution and Impact of Total Synthesis on Chemistry, Biology and Medicine. Isr J Chem 2016. [DOI: 10.1002/ijch.201600087] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Kyriacos C. Nicolaou
- Department of Chemistry; BioScience Research Collaborative; Rice University; 6100 Main Street Houston Texas 77005 USA
| | - Stephan Rigol
- Department of Chemistry; BioScience Research Collaborative; Rice University; 6100 Main Street Houston Texas 77005 USA
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20
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Takikawa H, Ishikawa Y, Yoshinaga Y, Hashimoto Y, Kusumi T, Suzuki K. Pleospdione, A Tricyclic Natural Product with Dense Oxygenation at the A-Ring: Total Synthesis and Incongruity of the Originally Assigned Structure and its C3-Epimer. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20160134] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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21
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Saxena A, Perez F, Krische MJ. Ruthenium(0)-Catalyzed [4+2] Cycloaddition of Acetylenic Aldehydes with α-Ketols: Convergent Construction of Angucycline Ring Systems. Angew Chem Int Ed Engl 2016; 55:1493-7. [PMID: 26663806 PMCID: PMC4718903 DOI: 10.1002/anie.201509646] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 11/13/2015] [Indexed: 11/09/2022]
Abstract
Ruthenium(0) complexes modified by CyJohnPhos or RuPhos catalyze the successive C-C coupling of acetylenic aldehydes with α-ketols to form [4+2] cycloadducts as single diastereomers. This method enables convergent construction of type II polyketide ring systems of the angucycline class.
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Affiliation(s)
- Aakarsh Saxena
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. A5300, Austin, TX, 78712-1167, USA
| | - Felix Perez
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. A5300, Austin, TX, 78712-1167, USA
| | - Michael J Krische
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. A5300, Austin, TX, 78712-1167, USA.
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22
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Koyama Y, Takata T. Nitrile <i>N</i>-Oxide Agents for Click Reaction: Catalyst-Free Cycloaddition Reaction Involving C-C Bond Formation. J SYN ORG CHEM JPN 2016. [DOI: 10.5059/yukigoseikyokaishi.74.866] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yasuhito Koyama
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University
| | - Toshikazu Takata
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University
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23
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Yang X, Wu D, Lu Z, Sun H, Li A. A mild preparation of alkynes from alkenyl triflates. Org Biomol Chem 2016; 14:5591-4. [DOI: 10.1039/c6ob00345a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report herein a protocol for preparing alkynes from alkenyl triflates at ambient temperature with LiCl as a promoter.
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Affiliation(s)
- Xiaowen Yang
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease and State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing 210009
- China
- State Key Laboratory of Bioorganic and Natural Products Chemistry
| | - Dimin Wu
- State Key Laboratory of Bioorganic and Natural Products Chemistry
- Collaborative Innovation Center of Chemistry for Life Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Zhaohong Lu
- State Key Laboratory of Bioorganic and Natural Products Chemistry
- Collaborative Innovation Center of Chemistry for Life Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Hongbin Sun
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease and State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Ang Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry
- Collaborative Innovation Center of Chemistry for Life Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
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24
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Saxena A, Perez F, Krische MJ. Ruthenium(0)-Catalyzed [4+2] Cycloaddition of Acetylenic Aldehydes with α-Ketols: Convergent Construction of Angucycline Ring Systems. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201509646] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Aakarsh Saxena
- University of Texas at Austin; Department of Chemistry; 105 E 24th St. A5300 Austin TX 78712-1167 USA
| | - Felix Perez
- University of Texas at Austin; Department of Chemistry; 105 E 24th St. A5300 Austin TX 78712-1167 USA
| | - Michael J. Krische
- University of Texas at Austin; Department of Chemistry; 105 E 24th St. A5300 Austin TX 78712-1167 USA
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25
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Saxena A, Perez F, Krische MJ. Ruthenium(0) Catalyzed Endiyne-α-Ketol [4 + 2] Cycloaddition: Convergent Assembly of Type II Polyketide Substructures via C-C Bond Forming Transfer Hydrogenation. J Am Chem Soc 2015; 137:5883-6. [PMID: 25938947 DOI: 10.1021/jacs.5b02755] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Upon exposure of 3,4-benzannulated 1,5-diynes (benzo-endiynes) to α-ketols (α-hydroxyketones) in the presence of Ru(0) catalysts derived from Ru3(CO)12 and RuPhos or CyJohnPhos, successive redox-triggered C-C coupling occurs to generate products of [4 + 2] cycloaddition. The proposed catalytic mechanism involves consecutive alkyne-carbonyl oxidative couplings to form transient oxaruthanacycles that suffer α-ketol mediated transfer hydrogenolysis. This process provides a new, convergent means of assembling Type II polyketide substructures.
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Affiliation(s)
- Aakarsh Saxena
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, Texas 78712, United States
| | - Felix Perez
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, Texas 78712, United States
| | - Michael J Krische
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, Texas 78712, United States
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26
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Galenko AV, Khlebnikov AF, Novikov MS, Pakalnis VV, Rostovskii NV. Recent advances in isoxazole chemistry. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4503] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Abstract
Abstract
The synthesis of urea in 1828 set in motion the discipline of organic synthesis in general and of total synthesis in particular, the art and science of synthesizing natural products, the molecules of living nature. Early endeavors in total synthesis had as their main objective the proof of structure of the target molecule. Later on, the primary goal became the demonstration of the power of synthesis to construct complex molecules through appropriately devised strategies, making the endeavor an achievement whose value was measured by its elegance and efficiency. While these objectives continue to be important, contemporary endeavors in total synthesis are increasingly focused on practical aspects, including method development, efficiency, and biological and medical relevance. In this article, the emergence and evolution of total synthesis to its present state is traced, selected total syntheses from the author's laboratories are highlighted, and projections for the future of the field are discussed.
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28
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Five-Membered Ring Systems with O & N Atoms. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/b978-0-08-100017-5.00011-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Liu HL, Geng ZF, Zhang SY, Han J. One-Pot Three-Component Synthesis of 3,5-Disubstituted Isoxazoles by a Coupling–Cyclocondensation Sequence. HETEROCYCLES 2014. [DOI: 10.3987/com-14-12965] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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