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Xiao J, Wu H, Liang JR, Wu P, Guo C, Wang YW, Wang ZY, Peng Y. Photocatalytic Tandem Radical Cyclization Enables Expeditious Total Synthesis of Epoxyhinokiol Analogues for Anticancer Activity Evaluation. Org Lett 2024; 26:3481-3486. [PMID: 38240748 DOI: 10.1021/acs.orglett.3c03811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
A photocatalytic radical cascade with an unusual endo-trig cyclization was developed, which enables the efficient assembly of divergent tricyclic diterpenoid frameworks. The first total synthesis of abietane 10-epi-epoxyhinoliol was thus achieved in six steps by a subsequent reductive coupling of i-PrBr under photoredox/nickel dual catalysis. Inhibitory tests of chiral 10-epi-epoxyhinoliol and its analogues in 4T1 cancer cells demonstrated the critical role of the C12 hydroxyl group, leading to a discovery of the simplified analogue with better activity.
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Affiliation(s)
- Jian Xiao
- School of Chemistry, Southwest Jiaotong University, Chengdu 610031, P. R. China
| | - Hao Wu
- School of Chemistry, Southwest Jiaotong University, Chengdu 610031, P. R. China
| | - Jia-Rong Liang
- Spin-X Institute, South China University of Technology, Guangzhou 511422, P. R. China
| | - Ping Wu
- School of Chemistry, Southwest Jiaotong University, Chengdu 610031, P. R. China
| | - Chen Guo
- School of Chemistry, Southwest Jiaotong University, Chengdu 610031, P. R. China
| | - Ya-Wen Wang
- School of Chemistry, Southwest Jiaotong University, Chengdu 610031, P. R. China
| | - Zhi-Yi Wang
- Spin-X Institute, South China University of Technology, Guangzhou 511422, P. R. China
| | - Yu Peng
- School of Chemistry, Southwest Jiaotong University, Chengdu 610031, P. R. China
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Jones NS, Comparin JH. Interpol review of controlled substances 2016-2019. Forensic Sci Int Synerg 2020; 2:608-669. [PMID: 33385148 PMCID: PMC7770462 DOI: 10.1016/j.fsisyn.2020.01.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 01/23/2020] [Indexed: 12/14/2022]
Abstract
This review paper covers the forensic-relevant literature in controlled substances from 2016 to 2019 as a part of the 19th Interpol International Forensic Science Managers Symposium. The review papers are also available at the Interpol website at: https://www.interpol.int/content/download/14458/file/Interpol%20Review%20Papers%202019.pdf.
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Affiliation(s)
- Nicole S. Jones
- RTI International, Applied Justice Research Division, Center for Forensic Sciences, 3040 E. Cornwallis Road, Research Triangle Park, NC, 22709-2194, USA
| | - Jeffrey H. Comparin
- United States Drug Enforcement Administration, Special Testing and Research Laboratory, USA
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3
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Sun H, Wu G, Xie X. Synthetic studies towards daphniyunnine B: Construction of AC bicyclic skeleton with two vicinal all carbon quaternary stereocenters. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.06.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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4
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Li K, Wang L, Yu A, Zhu L, Zhang L, Gu Y, Meng X. Synthesis of Benzothiophene-Fused Oxa[6.6.5]tricyclic Skeletons through a Cinchonidine- or NaOH-Promoted Quadruple Domino Sequence. Chemistry 2019; 25:9665-9669. [PMID: 31066939 DOI: 10.1002/chem.201900890] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Indexed: 12/26/2022]
Abstract
Two base-promoted quadruple domino reactions between thioaurones and allylic phosphonium salts have been developed to synthesize benzothiophene-fused oxa[6.6.5]tricyclic skeletons in moderate to good yields with excellent stereoselectivity and broad functional-group tolerance. This is a simple and useful protocol for the rapid construction of the umbrella-like oxa[6.6.5]tricyclic skeleton.
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Affiliation(s)
- Ke Li
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, P.R. China
| | - Liang Wang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, P.R. China
| | - Aimin Yu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, P.R. China
| | - Lingli Zhu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, P.R. China
| | - Lei Zhang
- Tianjin Engineering Technology Center of Chemical, Wastewater Source Reduction and Recycling, School of Science, Tianjin Chengjian University, Tianjin, 300384, P.R. China
| | - Yingchun Gu
- Tianjin Engineering Technology Center of Chemical, Wastewater Source Reduction and Recycling, School of Science, Tianjin Chengjian University, Tianjin, 300384, P.R. China
| | - Xiangtai Meng
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, P.R. China
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5
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Li T, Wu G, Feng S, Wang Z, Xie X, She X. A rapid construction of the ABC tricyclic skeleton of malabanone A. Org Biomol Chem 2018; 16:8491-8494. [PMID: 30383060 DOI: 10.1039/c8ob02495b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The construction of the ABC tricyclic skeleton of malabanone A with the required 4 stereocenters was accomplished in a concise route starting from R-carvone. The synthesis featured an intramolecular [3 + 2] cycloaddition reaction to assemble its A ring and an intramolecular Diels-Alder reaction to construct its C ring.
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Affiliation(s)
- Tao Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, P. R. China.
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6
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Romero KJ, Galliher MS, Pratt DA, Stephenson CRJ. Radicals in natural product synthesis. Chem Soc Rev 2018; 47:7851-7866. [PMID: 30101272 PMCID: PMC6205920 DOI: 10.1039/c8cs00379c] [Citation(s) in RCA: 164] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Free radical intermediates have intrigued chemists since their discovery, and an ever-increasing appreciation for their unique reactivity has resulted in the widespread utilization of these species throughout the field of chemical synthesis. This is most evident from the recent surge in the application of intermolecular radical reactions that feature in complex molecule syntheses. This tutorial review will discuss the diverse methods utilized for radical generation and reactivity to form critical bonds in natural product total synthesis. In particular, stabilized (e.g. benzyl) and persistent (e.g. TEMPO) radicals will be the primary focus.
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Affiliation(s)
- Kevin J Romero
- Department of Chemistry, University of Michigan, 930 N. University Ave, Ann Arbor, MI 48109, USA.
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7
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Li Y, Chang Y, Li Y, Cao C, Yang J, Wang B, Liang D. Iron-Catalyzed exo
-Selective Synthesis of Cyanoalkyl Indolines via Cyanoisopropylarylation of Unactivated Alkenes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800296] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yanni Li
- Department of Chemistry; Kunming University; Kunming 650214 People's Republic of China
| | - Yu Chang
- Department of Chemistry; Kunming University; Kunming 650214 People's Republic of China
| | - Yufen Li
- Department of Chemistry; Kunming University; Kunming 650214 People's Republic of China
| | - Cheng Cao
- Department of Chemistry; Kunming University; Kunming 650214 People's Republic of China
| | - Jinshuang Yang
- Department of Chemistry; Kunming University; Kunming 650214 People's Republic of China
| | - Baoling Wang
- Yunnan Engineering Technology Research Center for Plastic Films; Kunming 650214 People's Republic of China
| | - Deqiang Liang
- Department of Chemistry; Kunming University; Kunming 650214 People's Republic of China
- Yunnan Engineering Technology Research Center for Plastic Films; Kunming 650214 People's Republic of China
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Yuan Z, Hu X, Zhang H, Liu L, Chen P, He M, Xie X, Wang X, She X. Total synthesis of conosilane A via a site-selective C–H functionalization strategy. Chem Commun (Camb) 2018; 54:912-915. [DOI: 10.1039/c7cc09367e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The strategy developed for the first total synthesis of highly oxygenated natural product conosilane A involving double manipulation of allylic C(sp3)–H functionalization renders the power of C–H functionalization in organic syntheses.
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Affiliation(s)
- Ziyun Yuan
- State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University
- Lanzhou
- China
| | - Xiaojun Hu
- State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University
- Lanzhou
- China
| | - Hao Zhang
- State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University
- Lanzhou
- China
| | - Lin Liu
- State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University
- Lanzhou
- China
| | - Peng Chen
- State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University
- Lanzhou
- China
| | - Min He
- State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University
- Lanzhou
- China
| | - Xingang Xie
- State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University
- Lanzhou
- China
| | - Xiaolei Wang
- State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University
- Lanzhou
- China
| | - Xuegong She
- State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University
- Lanzhou
- China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin
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