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Yang W, Shang X, Ni T, Yan H, Luo X, Zheng H, Li Z, Deng W. Diastereo‐ and Enantioselective Synthesis of Bisbenzannulated Spiroketals and Spiroaminals by Ir/Ag/Acid Ternary Catalysis. Angew Chem Int Ed Engl 2022; 61:e202210207. [DOI: 10.1002/anie.202210207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Wu‐Lin Yang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Xin‐Yu Shang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Tao Ni
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Hui Yan
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Xiaoyan Luo
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Hanliang Zheng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Department of Chemistry Zhejiang Normal University Jinhua 321004 P. R. China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Wei‐Ping Deng
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Department of Chemistry Zhejiang Normal University Jinhua 321004 P. R. China
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Yang WL, Shang XY, Ni T, Yan H, Luo X, Zheng H, Li Z, Deng WP. Diastereo‐ and Enantioselective Synthesis of Bisbenzannulated Spiroketals and Spiroaminals by Ir/Ag/Acid Ternary Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wu-Lin Yang
- East China University of Science and Technology School of Pharmacy 130 Meilong Road 200237 Shanghai CHINA
| | - Xin-Yu Shang
- East China University of Science and Technology School of Pharmacy CHINA
| | - Tao Ni
- East China University of Science and Technology School of Pharmacy CHINA
| | - Hui Yan
- East China University of Science and Technology School of Pharmacy CHINA
| | - Xiaoyan Luo
- East China University of Science and Technology School of Pharmacy CHINA
| | - Hanliang Zheng
- Zhejiang Normal University Department of Chemistry CHINA
| | - Zhong Li
- East China University of Science and Technology School of Pharmacy CHINA
| | - Wei-Ping Deng
- East China University of Science and Technology School of Pharmacy CHINA
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Miller JL, Zhou L, Liu P, Floreancig PE. Mechanism-Based Approach to Reagent Selection for Oxidative Carbon-Hydrogen Bond Cleavage Reactions. Chemistry 2021; 28:e202103078. [PMID: 34822737 DOI: 10.1002/chem.202103078] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Indexed: 11/07/2022]
Abstract
Numerous hydride-abstracting agents generate the same cationic intermediate, but substrate features such as intermediate cation stability, oxidation potential, and steric environment can influence reaction rates in an oxidant-dependent manner. This manuscript provides experimental data to illustrate the role that structural features play in the kinetics of hydride abstraction reactions with commonly used quinone-, oxoammonium ion-, and carbocation- based oxidants. Computational studies of the transition state structures and energies explain these results and energy decomposition analysis calculations reveal unique sensitivities to electrostatic attraction and steric repulsions. Rigorous rate studies of select reactions validated the capacity of the calculations to predict reactivity trends. Additionally, kinetics studies demonstrate the potential for product inhibition in DDQ-mediated reactions. These studies provide a clear guide to select the optimal oxidant for structurally disparate substrates and lead to predictions of reactivity that were validated experimentally.
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Affiliation(s)
- Jenna L Miller
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania, 15260, United States
| | - Lin Zhou
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania, 15260, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania, 15260, United States
| | - Paul E Floreancig
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania, 15260, United States
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4
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Affiliation(s)
- Scott M. Caplan
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Paul E. Floreancig
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
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5
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Caplan SM, Floreancig PE. Total Synthesis of Divergolides E and H. Angew Chem Int Ed Engl 2018; 57:15866-15870. [DOI: 10.1002/anie.201810336] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Scott M. Caplan
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Paul E. Floreancig
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
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Hanna RD, Naro Y, Deiters A, Floreancig PE. Potent and Readily Accessible Bistramide A Analogues through Diverted Total Synthesis. Chemistry 2018; 24:16271-16275. [DOI: 10.1002/chem.201804417] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Ramsey D. Hanna
- Department of Chemistry University of Pittsburgh Pittsburgh Pennsylvania 15260 USA
| | - Yuta Naro
- Department of Chemistry University of Pittsburgh Pittsburgh Pennsylvania 15260 USA
| | - Alexander Deiters
- Department of Chemistry University of Pittsburgh Pittsburgh Pennsylvania 15260 USA
| | - Paul E. Floreancig
- Department of Chemistry University of Pittsburgh Pittsburgh Pennsylvania 15260 USA
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Claraz A, Sahoo G, Berta D, Madarász Á, Pápai I, Pihko PM. A Catalyst Designed for the Enantioselective Construction of Methyl- and Alkyl-Substituted Tertiary Stereocenters. Angew Chem Int Ed Engl 2015; 55:669-73. [DOI: 10.1002/anie.201509302] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Indexed: 12/26/2022]
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8
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Claraz A, Sahoo G, Berta D, Madarász Á, Pápai I, Pihko PM. A Catalyst Designed for the Enantioselective Construction of Methyl- and Alkyl-Substituted Tertiary Stereocenters. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201509302] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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Li QM, Luo JG, Zhao HJ, Yu WY, Wang XB, Yang MH, Luo J, Sun HB, Chen YJ, Guo QL, Kong LY. Involudispirones A and B: Sesterterpenes Containing a Dispiro Ring fromStahlianthus involucratus. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500360] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Qiang-Ming Li
- State Key Laboratory of Natural Medicines; Department of Natural Medicinal Chemistry; China Pharmaceutical University; 24 Tong Jia Xiang Nanjing 210009 People's Republic of China
| | - Jian-Guang Luo
- State Key Laboratory of Natural Medicines; Department of Natural Medicinal Chemistry; China Pharmaceutical University; 24 Tong Jia Xiang Nanjing 210009 People's Republic of China
| | - Hui-Jun Zhao
- State Key Laboratory of Natural Medicines; Department of Natural Medicinal Chemistry; China Pharmaceutical University; 24 Tong Jia Xiang Nanjing 210009 People's Republic of China
| | - Wen-Ying Yu
- State Key Laboratory of Natural Medicines; Department of Natural Medicinal Chemistry; China Pharmaceutical University; 24 Tong Jia Xiang Nanjing 210009 People's Republic of China
| | - Xiao-Bing Wang
- State Key Laboratory of Natural Medicines; Department of Natural Medicinal Chemistry; China Pharmaceutical University; 24 Tong Jia Xiang Nanjing 210009 People's Republic of China
| | - Ming-Hua Yang
- State Key Laboratory of Natural Medicines; Department of Natural Medicinal Chemistry; China Pharmaceutical University; 24 Tong Jia Xiang Nanjing 210009 People's Republic of China
| | - Jun Luo
- State Key Laboratory of Natural Medicines; Department of Natural Medicinal Chemistry; China Pharmaceutical University; 24 Tong Jia Xiang Nanjing 210009 People's Republic of China
| | - Hong-Bin Sun
- State Key Laboratory of Natural Medicines; Department of Natural Medicinal Chemistry; China Pharmaceutical University; 24 Tong Jia Xiang Nanjing 210009 People's Republic of China
| | - Yi-Jun Chen
- State Key Laboratory of Natural Medicines; Department of Natural Medicinal Chemistry; China Pharmaceutical University; 24 Tong Jia Xiang Nanjing 210009 People's Republic of China
| | - Qing-Long Guo
- State Key Laboratory of Natural Medicines; Department of Natural Medicinal Chemistry; China Pharmaceutical University; 24 Tong Jia Xiang Nanjing 210009 People's Republic of China
| | - Ling-Yi Kong
- State Key Laboratory of Natural Medicines; Department of Natural Medicinal Chemistry; China Pharmaceutical University; 24 Tong Jia Xiang Nanjing 210009 People's Republic of China
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Li QM, Luo JG, Zhang YM, Li ZR, Wang XB, Yang MH, Luo J, Sun HB, Chen YJ, Kong LY. Involucratustones A-C: Unprecedented Sesquiterpene Dimers Containing Multiple Contiguous Quaternary Carbons from Stahlianthus involucratus. Chemistry 2015; 21:13206-9. [PMID: 26228004 DOI: 10.1002/chem.201502631] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Indexed: 01/04/2023]
Abstract
Involucratustones A-C (1-3), three cadinane dimers containing multiple contiguous quaternary carbons, were isolated from the rhizomes of Stahlianthus involucratus. Their structures were determined by a combination of NMR spectroscopy, chemical conversion, and X-ray diffraction analysis. Compounds 1 and 2 are rearranged homodimers of cadinane sesquiterpene fused with a unique fully substituted 1-oxaspiro[4.4]nonane core observed for the first time in natural products, and 3 is a novel 3',4'-seco-cadinane-dimer. Compounds 1 and 2 exhibited potent cytotoxic activities, and 3 showed notable anti-inflammatory effect.
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Affiliation(s)
- Qiang-Ming Li
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009 (P. R. China)
| | - Jian-Guang Luo
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009 (P. R. China)
| | - Yang-Mei Zhang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009 (P. R. China)
| | - Zhong-Rui Li
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009 (P. R. China)
| | - Xiao-Bing Wang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009 (P. R. China)
| | - Ming-Hua Yang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009 (P. R. China)
| | - Jun Luo
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009 (P. R. China)
| | - Hong-Bin Sun
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009 (P. R. China)
| | - Yi-Jun Chen
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009 (P. R. China)
| | - Ling-Yi Kong
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009 (P. R. China).
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Heravi MM, Ahmadi T, Ghavidel M, Heidari B, Hamidi H. Recent applications of the hetero Diels–Alder reaction in the total synthesis of natural products. RSC Adv 2015. [DOI: 10.1039/c5ra17488k] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The synthetic utility and potential power of the Diels–Alder (D–A) reaction in organic chemistry is evident.
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Affiliation(s)
| | | | | | | | - Hoda Hamidi
- Department of Chemistry
- Alzahra University
- Tehran
- Iran
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