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Han S. “
K‐synthesis
”: Recent advancements in natural product synthesis enabled by unique methods and strategies development in Korea. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sunkyu Han
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon South Korea
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2
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Li M, Li Q, Su Y, Qiao Z, Wang J, Wang P, Ren S, Song N. 4-(tert-Butyldiphenylsilyloxy)-2,2-dimethylbutanoyl: An Easily Removable Pivaloyl-Type Protecting Group with High Orthogonality. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1751-1225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractProtecting groups play multiple and vital roles during the synthesis of carbohydrates and other natural products. We herein report the installation and orthogonal cleavage, under mild conditions, of a 4-(tert-butyldiphenylsilyloxy)-2,2-dimethylbutanoyl (BDMB) group as a sterically hindered pivaloyl-type hydroxy protecting group. The compatibility of this substituent with the removal of other protecting groups is also investigated. Due to its advantageous properties, BDMB is anticipated to function as a valuable agent for masking hydroxy groups.
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Affiliation(s)
- Ming Li
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology
| | - Qishuai Li
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
| | - Yong Su
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
| | - Zhi Qiao
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
| | - Jianjun Wang
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
| | - Peng Wang
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
| | - Sumei Ren
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology
| | - Ni Song
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology
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3
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Kotha S, Keesari RR. Synthetic Approaches to Crinipellin Based Tetraquinanes via Ring‐Rearrangement Metathesis and Ring‐Closing Metathesis. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry Indian Institute of Technology – Bombay Powai Mumbai 400 076 India
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4
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Kim R, Lee S, Lee J, Lee HY. A Total Synthesis of (±)-Ceratopicanol via Palladium Catalyzed Reductive Cyclization. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Rira Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Korea
| | - Sanghyeon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Korea
| | - Jaeyeon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Korea
| | - Hee-Yoon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Korea
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5
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Kawamoto Y, Ozone D, Kobayashi T, Ito H. Enantioselective Total Synthesis of Chondrosterins I and J by Catalytic Asymmetric Intramolecular Aldol Reaction Using Chiral Diamine Catalyst. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000579] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yuichiro Kawamoto
- School of Life Sciences; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji 192-0392 Tokyo Japan
| | - Daiki Ozone
- School of Life Sciences; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji 192-0392 Tokyo Japan
| | - Toyoharu Kobayashi
- School of Life Sciences; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji 192-0392 Tokyo Japan
| | - Hisanaka Ito
- School of Life Sciences; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi, Hachioji 192-0392 Tokyo Japan
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6
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Kim MJ, Lee S, Kang T, Baik MH, Lee HY. Unexpected Selectivity of Intramolecular [3+2] Cycloaddition of Trimethylenemethane (TMM) Diyl toward Total Synthesis of Conidiogenone B. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901700] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Myungjo J. Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); 34141 Daejeon Republic of Korea
| | - Sanghyeon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
| | - Taek Kang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
| | - Mu-Hyun Baik
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); 34141 Daejeon Republic of Korea
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
| | - Hee-Yoon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
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7
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Kawamoto Y, Ozone D, Kobayashi T, Ito H. Total synthesis of (±)-chondrosterin I using a desymmetric aldol reaction. Org Biomol Chem 2018; 16:8477-8480. [DOI: 10.1039/c8ob02557f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first total synthesis of racemic chondrosterin I was accomplished featuring a desymmetric intramolecular aldol reaction of the meso diketoester compound.
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Affiliation(s)
- Yuichiro Kawamoto
- School of Life Sciences
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Daiki Ozone
- School of Life Sciences
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Toyoharu Kobayashi
- School of Life Sciences
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Hisanaka Ito
- School of Life Sciences
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
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8
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Lee H, Kang T, Lee HY. Total Synthesis of (±)-Waihoensene. Angew Chem Int Ed Engl 2017; 56:8254-8257. [DOI: 10.1002/anie.201704492] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Hongsoo Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Taek Kang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Hee-Yoon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
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9
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Affiliation(s)
- Hongsoo Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Taek Kang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Hee-Yoon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
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10
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Lee HY. Trimethylenemethane diyl mediated tandem cycloaddition reactions: mechanism based design of synthetic strategies. Acc Chem Res 2015. [PMID: 26204521 DOI: 10.1021/acs.accounts.5b00178] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Several criteria for the measure of synthetic strategies toward "ideal synthesis" are available to guide the design and evaluation of the synthetic strategies toward the target molecules. One strategy toward "ideal synthesis" is developing a multistep reaction that involves dramatic change in complexity. Biogenesis of natural products and mechanistic investigation of complicated organic transformation provide good inspiration for design of new synthetic strategies. Trimethylenemethane diradical (TMM diyl), first introduced only as a theoretically interesting structure 60 years ago, gained interests of physical organic chemistry when it was first detected by Dowd. Study of characteristics and properties of TMM diyl was accelerated in a great deal when Koebrich observed dimeric hydrocarbon products from the reaction of 1,1-dibromo-2-methylhexa-1,5-diene with MeLi. Berson followed the mechanistic investigation of the reaction that involved 2-methylenecyclopentane-1,3-diyl, and thoroughly studied physical and chemical properties of the TMM diyl. This lead to the development of intramolecular [2 + 3] TMM diyl cycloaddition reaction for the construction of linearly fused triquinanes by Little. We envisioned that the generation of a TMM diyl through cycloaddition reaction discovered by Koebrich and [2 + 3] cycloaddition reaction of the TMM diyl could be combined together to form polyquinane structures. A cycloaddition reaction sequence of generating a TMM diyl from a alkylidene carbene of 2-methylhexa-1,5-diene structure in the presence of another olefin was designed and executed to produce linearly fused and angularly fused triquinanes depending on the connectivity of the second double bond. The successful transformation also inspired design of a tandem cycloaddition reaction strategy of using unprecedented tetrahydrocyclopentapyrazole to TMM diyl transformation. The new design involves two [2 + 3] cycloaddition reactions of 6-diazohexa-1,2-diene with an olefin attached at a proper position. When a diazo functionality is produced, the initial [2 + 3] cycloaddition reaction generates the TMM diyl, which undergoes the second [2 + 3] cycloaddition reaction to form triquinanes with high efficiency. The first tandem strategy involves a massive reorganization of molecular connectivity as one C═C double bond was cleaved and four C-C bonds were formed. The second tandem strategy connected two double bonds with one carbon center to form four C-C bonds without breaking any bond. The developed tandem strategies were readily applied to the total synthesis of natural products, especially triquinanes. Thus, the total syntheses of hirsutene, ceratopicanol, pentalenene and panaginsene with structural revision were achieved and the strategy was extended to the total synthesis of crinipellins (tetraquinane natural products). The newly designed tandem strategies not only demonstrated the efficiency and effectiveness of the process but also provided future opportunity of studying TMM diyl mediated reactions for designing variety of synthetic strategies.
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Affiliation(s)
- Hee-Yoon Lee
- Molecular-Level Interface
Research Center, Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon, 305-701 Korea
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11
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Affiliation(s)
- Sujeong Geum
- Department
of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea
| | - Hee-Yoon Lee
- Department
of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea
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12
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Huang XC, Yang XH, Song RJ, Li JH. Rhodium-Catalyzed Synthesis of Isoquinolines and Indenes from Benzylidenehydrazones and Internal Alkynes. J Org Chem 2014; 79:1025-31. [DOI: 10.1021/jo402497v] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Xiao-Cheng Huang
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research, Hunan Normal University, Changsha 410081, China
| | - Xu-Heng Yang
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Ren-Jie Song
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jin-Heng Li
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
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Aziridinyl imines in organic synthesis: Development of tandem reaction strategies and application to total synthesis of natural products. PURE APPL CHEM 2013. [DOI: 10.1351/pac-con-12-10-01] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Aziridinyl imines are well-known carbene equivalents because they are precursors of diazo compounds from which reactive intermediates can be produced. These carbene equivalents can be utilized as zwitterionic species, diradicals, or 4π system for cycloaddition reactions. Thus, the intermediates derived from aziridinyl imines have been used in the sulfur-ylide-mediated epoxide formation, tandem free-radical reactions, or cyclopropanation reaction via carbene intermediates to form trimethylenemethane (TMM) diyls, which undergo [2 + 3] cycloaddition reactions to form cyclopentanoids. Diazo compounds generated from aziridinyl imines also react with allenes to form TMM diyls. This reaction was utilized in tandem cycloaddition reactions of linear substrates to form polyquinanes. These tandem reaction strategies were successfully applied to the total synthesis of various cyclopentanoid natural products.
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