1
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Xue Y, Hou SH, Zhang X, Zhang FM, Zhang XM, Tu YQ. Total Synthesis of the Hexacyclic Sesterterpenoid Niduterpenoid B via Structural Reorganization Strategy. J Am Chem Soc 2024; 146:25445-25450. [PMID: 39235150 DOI: 10.1021/jacs.4c09555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2024]
Abstract
To date, it remains challenging to precisely and efficiently construct structurally intriguing polycarbocycles with densely packed stereocenters in organic synthesis. Niduterpenoid B, a naturally occurring ERα inhibitor, exemplifies this complexity with its intricate polycyclic network comprising 5 cyclopentane and 1 cyclopropane rings, featuring 13 contiguous stereocenters, including 4 all-carbon quaternary centers. In this work, we describe the first total synthesis of niduterpenoid B using a structural reorganization strategy. Key features include the following: (1) an efficient methoxy-controlled cascade reaction that precisely forges a highly functionalized tetraquinane (A-D rings) bearing sterically hindered contiguous quaternary stereocenters; (2) a rhodium-catalyzed [1 + 2] cycloaddition that facilitates the construction of a strained 3/5 bicycle (E-F rings) angularly fused with ring D.
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Affiliation(s)
- Yuan Xue
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
- School of Pharmaceutical Sciences, School of Chemistry and Chemical Engineering, Frontier Scientific Center of Transformative Molecules, National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Si-Hua Hou
- School of Pharmaceutical Sciences, School of Chemistry and Chemical Engineering, Frontier Scientific Center of Transformative Molecules, National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xiang Zhang
- School of Pharmaceutical Sciences, School of Chemistry and Chemical Engineering, Frontier Scientific Center of Transformative Molecules, National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
- School of Pharmaceutical Sciences, School of Chemistry and Chemical Engineering, Frontier Scientific Center of Transformative Molecules, National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, Shanghai, 200240, China
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2
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Wang AF, Tian JM, Zhao XJ, Li ZH, Zhang Y, Lu K, Wang H, Zhang SY, Tu YQ, Ding TM, Xie YY. Asymmetric Intramolecular Hydroalkylation of Internal Olefin with Cycloalkanone to Directly Access Polycyclic Systems. Angew Chem Int Ed Engl 2023; 62:e202308858. [PMID: 37462217 DOI: 10.1002/anie.202308858] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 07/17/2023] [Indexed: 08/04/2023]
Abstract
An asymmetric intramolecular hydroalkylation of unactivated internal olefins with tethered cyclic ketones was realized by the cooperative catalysis of a newly designed chiral amine (SPD-NH2 ) and PdII complex, providing straightforward access to either bridged or fused bicyclic systems containing three stereogenic centers with excellent enantioselectivity (up to 99 % ee) and diastereoselectivity (up to >20 : 1 dr). Notably, the bicyclic products could be conveniently transformed into a diverse range of key structures frequently found in bioactive terpenes, such as Δ6 -protoilludene, cracroson D, and vulgarisins. The steric hindrance between the Ar group of the SPD-NH2 catalyst and the branched chain of the substrate, hydrogen-bonding interactions between the N-H of the enamine motif and the C=O of the directing group MQ, and the counterion of the PdII complex were identified as key factors for excellent stereoinduction in this dual catalytic process by density functional theory calculations.
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Affiliation(s)
- Ai-Fang Wang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Jin-Miao Tian
- College of Pharmaceutical Sciences & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Xiao-Jing Zhao
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Zi-Hao Li
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Ye Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Ka Lu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Hong Wang
- College of Pharmaceutical Sciences & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Shu-Yu Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yong-Qiang Tu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Tong-Mei Ding
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yu-Yang Xie
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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3
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Hou SH, Zhou FF, Sun YH, Li QZ. Deconstructive and Divergent Synthesis of Bioactive Natural Products. Molecules 2023; 28:6193. [PMID: 37687022 PMCID: PMC10488409 DOI: 10.3390/molecules28176193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/18/2023] [Accepted: 08/20/2023] [Indexed: 09/10/2023] Open
Abstract
Natural products play a key role in innovative drug discovery. To explore the potential application of natural products and their analogues in pharmacology, total synthesis is a key tool that provides natural product candidates and synthetic analogues for drug development and potential clinical trials. Deconstructive synthesis, namely building new, challenging structures through bond cleavage of easily accessible moieties, has emerged as a useful design principle in synthesizing bioactive natural products. Divergent synthesis, namely synthesizing many natural products from a common intermediate, can improve the efficiency of chemical synthesis and generate libraries of molecules with unprecedented structural diversity. In this review, we will firstly introduce five recent and excellent examples of deconstructive and divergent syntheses of natural products (2021-2023). Then, we will summarize our previous work on the deconstructive and divergent synthesis of natural products to demonstrate the high efficiency and simplicity of these two strategies in the field of total synthesis.
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Affiliation(s)
- Si-Hua Hou
- Shanghai Key Laboratory of Chiral Drugs and Engineering, College of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China; (F.-F.Z.); (Y.-H.S.); (Q.-Z.L.)
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4
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Lungu CN, Mangalagiu I. Editorial for Special Issue-''Research Progress and Applications of Natural Products". Molecules 2023; 28:5449. [PMID: 37513320 PMCID: PMC10385373 DOI: 10.3390/molecules28145449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
This Special Issue (S [...].
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Affiliation(s)
- Claudiu N Lungu
- Department of Morphological and Functional Science, University of Medicine and Pharmacy, Dunarea de Jos, 800017 Galati, Romania
| | - Ionel Mangalagiu
- Department of Chemistry, Alexandru Ioan Cuza University of Iasi, 11 Carol 1st Bvd., 700506 Iasi, Romania
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5
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Wang Y, Su Y, Jia Y. Total Synthesis of (+)-Aberrarone. J Am Chem Soc 2023; 145:9459-9463. [PMID: 37084250 DOI: 10.1021/jacs.3c02511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
The structurally intriguing diterpene (+)-aberrarone has been assembled in only 12 steps from the commercially available (S,S)-carveol without protecting group manipulations. This concise synthesis features a Cu-catalyzed asymmetric hydroboration to generate the chiral methyl group, a Ni-catalyzed reductive coupling to link two fragments, and a Mn-mediated radical cascade cyclization to construct the triquinane system.
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Affiliation(s)
- Yang Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Yongjian Su
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Yanxing Jia
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, 38 Xueyuan Road, Beijing 100191, China
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6
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Wang LN, Huang Z, Yu ZX. Synthesis of Polycyclic n/5/8 and n/5/5/5 Skeletons Using Rhodium-Catalyzed [5 + 2 + 1] Cycloaddition of Exocyclic-ene-vinylcyclopropanes and Carbon Monoxide. Org Lett 2023; 25:1732-1736. [PMID: 36881539 DOI: 10.1021/acs.orglett.3c00402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
A rhodium-catalyzed [5 + 2 + 1] reaction of exocyclic-ene-vinylcyclopropanes (exo-ene-VCPs) and CO has been realized to access challenging tricyclic n/5/8 skeletons (n = 5, 6, 7), some of which are found in natural products. This reaction can be used to build tetracyclic n/5/5/5 skeletons (n = 5, 6), which are also found in natural products. In addition, 0.2 atm CO can be replaced by (CH2O)n as the CO surrogate to achieve the [5 + 2 + 1] reaction with similar efficiency.
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Affiliation(s)
- Lu-Ning Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhiqiang Huang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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7
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Kim J, Lee S, Han S, Lee HY. Divergent synthesis of conidiogenones B–F and 12β-hydroxyconidiogenone C. Chem 2023. [DOI: 10.1016/j.chempr.2023.01.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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8
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Shi L, Gao Z, Li Y, Dai Y, Liu Y, Shi L, Hao HD. Synthetic study toward the diterpenoid aberrarone. Beilstein J Org Chem 2022; 18:1625-1628. [DOI: 10.3762/bjoc.18.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 11/16/2022] [Indexed: 12/05/2022] Open
Abstract
An approach to aberrarone, an antimalarial diterpenoid natural product with tetracyclic skeleton is reported. Key to the stereoselective preparation of the 6-5-5 tricyclic skeleton includes the mediation of Nagata reagent for constructing the C1 all-carbon quaternary centers and gold-catalyzed cyclopentenone synthesis through C–H insertion.
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9
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Abstract
We disclose the first total synthesis of (+)-aberrarone, a diterpenoid natural product featuring a 5-5-5-6-fused tetracyclic skeleton. Key to the approach is a Au-catalyzed-Sn-mediated Meyer-Schuster-Nazarov-cyclopropanation-aldol cascade, which closes four rings in high yield. The convergent approach furnishes the natural product (+)-aberrarone stereoselectively in 15 steps. We highlight the benefits of using a Sn-alkoxide to considerably expand the opportunities of Au-catalysis for the synthesis of complex molecules.
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Affiliation(s)
- Willi M Amberg
- ETH Zürich, Department of Chemistry and Applied Biosciences, Laboratory of Organic Chemistry, Vladimir Prelog Weg 3, HCI H335, 8093 Zürich, Switzerland
| | - Erick M Carreira
- ETH Zürich, Department of Chemistry and Applied Biosciences, Laboratory of Organic Chemistry, Vladimir Prelog Weg 3, HCI H335, 8093 Zürich, Switzerland
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10
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Abstract
Terpenoids constitute a broad class of natural compounds with tremendous variability in structure and bioactivity, which resulted in a strong interest of the chemical community to this class of natural products over the last 150 years. The presence of strained small rings renders the terpenoid targets interesting for chemical synthesis, due to limited number of available methods and stability issues. In this feature article, a number of recent examples of total syntheses of terpenoids with complex carbon frameworks featuring small rings are discussed. Specific emphasis is given to the new developments in strategical and tactical approaches to construction of such systems.
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Affiliation(s)
- Gleb A Chesnokov
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
| | - Karl Gademann
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
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11
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Abstract
The synthetic utility of rearrangement reactions in total synthesis for the rapid construction of core skeletons, the precise control of stereochemistry, and the identification of suitable synthons has been discussed.
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Affiliation(s)
- Lu Chen
- Key Laboratory of Biopesticide and Chemical Biology (Ministry of Education), College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China
| | - Guang Li
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, China
| | - Liansuo Zu
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China
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12
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Hewage RT, Huang RJ, Lai SJ, Lien YC, Weng SH, Li D, Chen YJ, Wu SH, Chein RJ, Lin HC. An Enzyme-Mediated Aza-Michael Addition Is Involved in the Biosynthesis of an Imidazoyl Hybrid Product of Conidiogenone B. Org Lett 2021; 23:1904-1909. [PMID: 33570417 DOI: 10.1021/acs.orglett.1c00330] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Meleagrin B is a terpene-alkaloid hybrid natural product that contains both the conidiogenone and meleagrin scaffold. Their derivatives show diverse biological activities. We characterized the biosynthesis of (-)-conidiogenone B (1), which involves a diterpene synthase and a P450 monooxygenase. In addition, an α,β-hydrolase (Con-ABH) was shown to catalyze an aza-Michael addition between 1 and imidazole to give 3S-imidazolyl conidiogenone B (6). Compound 6 was more potent than 1 against Staphylococcus aureus strains.
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Affiliation(s)
- Ranuka T Hewage
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan R.O.C.,Chemical Biology and Molecular Biophysics Program, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan R.O.C.,Department of Chemistry, National Taiwan University, Taipei 106, Taiwan R.O.C
| | - Rou-Jie Huang
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan R.O.C
| | - Shu-Jung Lai
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan R.O.C.,Graduate Institute of Biomedical Sciences, China Medical University, Taichung 404, Taiwan R.O.C.,Research Center for Cancer Biology, China Medical University, Taichung 404, Taiwan R.O.C
| | - Ya-Chu Lien
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan R.O.C
| | - Shao-Hsing Weng
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan R.O.C
| | - Dehai Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, P.R. China
| | - Yu-Ju Chen
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan R.O.C
| | - Shih-Hsiung Wu
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan R.O.C.,Chemical Biology and Molecular Biophysics Program, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan R.O.C.,Department of Chemistry, National Taiwan University, Taipei 106, Taiwan R.O.C
| | - Rong-Jie Chein
- Chemical Biology and Molecular Biophysics Program, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan R.O.C.,Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan R.O.C
| | - Hsiao-Ching Lin
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan R.O.C.,Chemical Biology and Molecular Biophysics Program, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan R.O.C
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13
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Abstract
The synthetically challenging and highly functionalized azabicyclo[6.4.1] ring system, which is found in lycopodium alkaloid lycoclavatumide and some natural molecules, was synthesized for the first time. The key reaction was a diastereoselective type II [5+2] cycloaddition with excellent functional group compatibility. We tried to install the desired eight-membered ring in the final product by RCM reaction.
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Affiliation(s)
- Xin-Feng Wang
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bin Wang
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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14
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Abstract
Cyclohexane-angularly-fused triquinanes, 6-5-5-5 tetracycles, have attracted the attention of synthetic chemists due to their highly congested core structures and multiple quaternary carbon centers. This review focuses on the six completed total synthesis of naturally occurring cyclohexane-angularly-fused triquinanes in addition to seven notable methodologies that have been developed for the synthesis of these structures.
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Affiliation(s)
- Hongjun Jeon
- Department of Chemistry, University of Pennsylvania, 231 S. 34 Street, Philadelphia, PA 19104-6323, USA
- Therapeutics and Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon, 34114, Korea
| | - Jeffrey D Winkler
- Department of Chemistry, University of Pennsylvania, 231 S. 34 Street, Philadelphia, PA 19104-6323, USA
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15
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Wang S, Si R, Zhuang Q, Guo X, Ke T, Zhang X, Zhang F, Tu Y. Collective Total Synthesis of Aspidofractinine Alkaloids through the Development of a Bischler–Napieralski/Semipinacol Rearrangement Reaction. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009238] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shuang‐Hu Wang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
| | - Rui‐Qi Si
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
| | - Qing‐Bo Zhuang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
| | - Xiang Guo
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
| | - Tian Ke
- School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Xiao‐Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
| | - Fu‐Min Zhang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
| | - Yong‐Qiang Tu
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
- School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules Shanghai Jiao Tong University Shanghai 200240 P. R. China
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16
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Wang S, Si R, Zhuang Q, Guo X, Ke T, Zhang X, Zhang F, Tu Y. Collective Total Synthesis of Aspidofractinine Alkaloids through the Development of a Bischler–Napieralski/Semipinacol Rearrangement Reaction. Angew Chem Int Ed Engl 2020; 59:21954-21958. [DOI: 10.1002/anie.202009238] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Indexed: 01/01/2023]
Affiliation(s)
- Shuang‐Hu Wang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
| | - Rui‐Qi Si
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
| | - Qing‐Bo Zhuang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
| | - Xiang Guo
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
| | - Tian Ke
- School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Xiao‐Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
| | - Fu‐Min Zhang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
| | - Yong‐Qiang Tu
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 P. R. China
- School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules Shanghai Jiao Tong University Shanghai 200240 P. R. China
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17
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Munakala A, Gollapelli KK, Nanubolu JB, Chegondi R. Silver(I)-Catalyzed Oxidative Intramolecular Cyclopropanation: Access to Complex Tricyclo[3.3.1.0]nonanediones via Semipinacol-Type Rearrangement. Org Lett 2020; 22:7019-7024. [DOI: 10.1021/acs.orglett.0c02555] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Anandarao Munakala
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | | | | | - Rambabu Chegondi
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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18
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Xu B, Xun W, Su S, Zhai H. Total Syntheses of (−)‐Conidiogenone B, (−)‐Conidiogenone, and (−)‐Conidiogenol. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bo Xu
- The State Key Laboratory of Chemical OncogenomicsGuangdong Provincial Key Laboratory of Nano-Micro Materials ResearchSchool of Chemical Biology and BiotechnologyShenzhen Graduate School of Peking University Shenzhen 518055 China
| | - Wen Xun
- The State Key Laboratory of Chemical OncogenomicsGuangdong Provincial Key Laboratory of Nano-Micro Materials ResearchSchool of Chemical Biology and BiotechnologyShenzhen Graduate School of Peking University Shenzhen 518055 China
| | - Shaobin Su
- The State Key Laboratory of Chemical OncogenomicsGuangdong Provincial Key Laboratory of Nano-Micro Materials ResearchSchool of Chemical Biology and BiotechnologyShenzhen Graduate School of Peking University Shenzhen 518055 China
| | - Hongbin Zhai
- The State Key Laboratory of Chemical OncogenomicsGuangdong Provincial Key Laboratory of Nano-Micro Materials ResearchSchool of Chemical Biology and BiotechnologyShenzhen Graduate School of Peking University Shenzhen 518055 China
- Institute of Marine BiomedicineShenzhen Polytechnic Shenzhen 518055 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 China
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19
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Xu B, Xun W, Su S, Zhai H. Total Syntheses of (-)-Conidiogenone B, (-)-Conidiogenone, and (-)-Conidiogenol. Angew Chem Int Ed Engl 2020; 59:16475-16479. [PMID: 32502325 DOI: 10.1002/anie.202007247] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Indexed: 02/01/2023]
Abstract
Cyclopianes are novel diterpenes featuring a highly strained 6/5/5/5 tetracyclic core embedded with 6-8 consecutive stereocenters. The concise total syntheses of (-)-conidiogenone B, (-)-conidiogenone, and (-)-conidiogenol have been accomplished in 14-17 steps. The present work features a HAT-mediated alkene-nitrile cyclization to access the cis-biquinane, a Nicholas/Pauson-Khand reaction to construct the linear triquinane, and a Danheiser annulation to afford the congested angular triquinane skeleton.
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Affiliation(s)
- Bo Xu
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen, 518055, China
| | - Wen Xun
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen, 518055, China
| | - Shaobin Su
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen, 518055, China
| | - Hongbin Zhai
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen, 518055, China.,Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen, 518055, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, China
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20
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Zhang Y, Zheng TL, Cheng F, Dai KL, Zhang K, Ma AJ, Zhang FM, Zhang XM, Wang SH, Tu YQ. Facile access to diverse all-carbon quaternary center containing spirobicycles by exploring a tandem Castro-Stephens coupling/acyloxy shift/cyclization/semipinacol rearrangement sequence. Chem Sci 2020; 11:3878-3884. [PMID: 34122856 PMCID: PMC8152660 DOI: 10.1039/d0sc00102c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Efficient combination of two or more reactions into a practically useful purification free sequence is of great significance for the achievement of structural complexity and diversity, and an important approach for the development of new synthetic strategies that are industrially step-economic and environmentally friendly. In this work, a facile and efficient method for the construction of highly functionalized spirocyclo[4.5]decane derivatives containing a synthetically challenging quaternary carbon center has been successfully developed through the realization of a tandem Castro–Stephens coupling/1,3-acyloxy shift/cyclization/semipinacol rearrangement sequence. Thus a series of multi-substituted spirocyclo[4.5]decane and functionalized cyclohexane skeletons with a phenyl-substituted quaternary carbon center have been constructed using this method as illustrated by 24 examples in moderate to good yields. The major advantages of this method over the known strategies are better transformation efficiency (four consecutive transformations in one tandem reaction), product complexity and diversity. As a support of its potential application, a quick construction of the key tetracyclic diterpene skeleton of waihoensene has been achieved. An efficient construction of spirocyclo[4.5]decane derivatives is developed via a Castro–Stephens coupling/1,3-acyloxy shift/cyclization/semipinacol rearrangement sequence.![]()
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Affiliation(s)
- Ye Zhang
- State Key Laboratory of Applied Organic Chemistry, School of Pharmacy, Lanzhou University Lanzhou 730000 P. R. China
| | - Tian-Lu Zheng
- State Key Laboratory of Applied Organic Chemistry, School of Pharmacy, Lanzhou University Lanzhou 730000 P. R. China
| | - Fu Cheng
- State Key Laboratory of Applied Organic Chemistry, School of Pharmacy, Lanzhou University Lanzhou 730000 P. R. China
| | - Kun-Long Dai
- State Key Laboratory of Applied Organic Chemistry, School of Pharmacy, Lanzhou University Lanzhou 730000 P. R. China
| | - Kun Zhang
- School of Biotechnology and Health Science, Wuyi University Jiangmen 529020 P. R. China
| | - Ai-Jun Ma
- School of Biotechnology and Health Science, Wuyi University Jiangmen 529020 P. R. China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry, School of Pharmacy, Lanzhou University Lanzhou 730000 P. R. China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry, School of Pharmacy, Lanzhou University Lanzhou 730000 P. R. China
| | - Shao-Hua Wang
- State Key Laboratory of Applied Organic Chemistry, School of Pharmacy, Lanzhou University Lanzhou 730000 P. R. China .,School of Biotechnology and Health Science, Wuyi University Jiangmen 529020 P. R. China
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry, School of Pharmacy, Lanzhou University Lanzhou 730000 P. R. China .,School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University Shanghai 200240 P. R. China
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21
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Rinkel J, Steiner ST, Bian G, Chen R, Liu T, Dickschat JS. A Family of Related Fungal and Bacterial Di- and Sesterterpenes: Studies on Fusaterpenol and Variediene. Chembiochem 2020; 21:486-491. [PMID: 31476106 PMCID: PMC7065159 DOI: 10.1002/cbic.201900462] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Indexed: 01/28/2023]
Abstract
The absolute configuration of fusaterpenol (GJ1012E) has been revised by an enantioselective deuteration strategy. A bifunctional enzyme with a terpene synthase and a prenyltransferase domain from Aspergillus brasiliensis was characterised as variediene synthase, and the absolute configuration of its product was elucidated. The uniform absolute configurations of these and structurally related di- and sesterterpenes together with a common stereochemical course for the geminal methyl groups of GGPP unravel a similar conformational fold of the substrate in the active sites of the terpene synthases. For variediene, a thermal reaction observed during GC/MS analysis was studied in detail for which a surprising mechanism was uncovered.
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Affiliation(s)
- Jan Rinkel
- Kekulé Institute of Organic Chemistry and BiochemistryUniversity of BonnGerhard-Domagk-Strasse 153121BonnGermany
| | - Simon T. Steiner
- Kekulé Institute of Organic Chemistry and BiochemistryUniversity of BonnGerhard-Domagk-Strasse 153121BonnGermany
| | - Guangkai Bian
- Key Laboratory of Combinatorial Biosynthesis and Drug DiscoveryMinistry of Education andWuhan University School of Pharmaceutical Sciences185 Dunghu RoadWuhan430071P. R. China
| | - Rong Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug DiscoveryMinistry of Education andWuhan University School of Pharmaceutical Sciences185 Dunghu RoadWuhan430071P. R. China
| | - Tiangang Liu
- Key Laboratory of Combinatorial Biosynthesis and Drug DiscoveryMinistry of Education andWuhan University School of Pharmaceutical Sciences185 Dunghu RoadWuhan430071P. R. China
| | - Jeroen S. Dickschat
- Kekulé Institute of Organic Chemistry and BiochemistryUniversity of BonnGerhard-Domagk-Strasse 153121BonnGermany
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22
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Bartolo ND, Read JA, Valentín EM, Woerpel KA. Reactions of Allylmagnesium Reagents with Carbonyl Compounds and Compounds with C═N Double Bonds: Their Diastereoselectivities Generally Cannot Be Analyzed Using the Felkin-Anh and Chelation-Control Models. Chem Rev 2020; 120:1513-1619. [PMID: 31904936 PMCID: PMC7018623 DOI: 10.1021/acs.chemrev.9b00414] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This review describes the additions of allylmagnesium reagents to carbonyl compounds and to imines, focusing on the differences in reactivity between allylmagnesium halides and other Grignard reagents. In many cases, allylmagnesium reagents either react with low stereoselectivity when other Grignard reagents react with high selectivity, or allylmagnesium reagents react with the opposite stereoselectivity. This review collects hundreds of examples, discusses the origins of stereoselectivities or the lack of stereoselectivity, and evaluates why selectivity may not occur and when it will likely occur.
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Affiliation(s)
- Nicole D. Bartolo
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
| | - Jacquelyne A. Read
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
- Department of Chemistry, University of Utah, 315 South 1400
East, Salt Lake City, UT 84112, USA
| | - Elizabeth M. Valentín
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
- Department of Chemistry, Susquehanna University, 514
University Avenue, Selinsgrove, PA 17870, USA
| | - K. A. Woerpel
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
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23
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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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24
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Wang Z. Construction of all-carbon quaternary stereocenters by catalytic asymmetric conjugate addition to cyclic enones in natural product synthesis. Org Chem Front 2020. [DOI: 10.1039/d0qo00763c] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review discusses the construction of all-carbon quaternary stereocenters using catalytic asymmetric conjugate addition and its application in natural product synthesis.
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Affiliation(s)
- Zhuo Wang
- Southern University of Science and Technology
- School of Medicine
- Shenzhen
- People's Republic of China
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25
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Zhang Q, Zhang FM, Zhang CS, Liu SZ, Tian JM, Wang SH, Zhang XM, Tu YQ. Catalytic Asymmetric Total Syntheses of (−)-Galanthamine and (−)-Lycoramine. J Org Chem 2019; 84:12664-12671. [DOI: 10.1021/acs.joc.9b01971] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Qing Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Chang-Sheng Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Si-Zhan Liu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jin-Miao Tian
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Shao-Hua Wang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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26
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Cheng Z, Li Y, Xu W, Liu W, Liu L, Zhu D, Kang Y, Luo Z, Li Q. Three new cyclopiane-type diterpenes from a deep-sea derived fungus Penicillium sp. YPGA11 and their effects against human esophageal carcinoma cells. Bioorg Chem 2019; 91:103129. [PMID: 31374522 DOI: 10.1016/j.bioorg.2019.103129] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 07/16/2019] [Accepted: 07/17/2019] [Indexed: 02/06/2023]
Abstract
Cyclopianes, featuring a highly rigid 6/5/5/5-fused tetracyclic framework, are structurally unique and biologically significant and belong to a rarely reported diterpenoid family. Chemical investigation of an EtOAc extract of a deep-sea-derived Penicillium sp. led to the isolation of three new cyclopiane diterpenes, namely, conidiogenols C-D (1-2) and conidiogenone L (3). The structures were determined by extensive analyses of the spectroscopic data in association with ECD calculations and chemical conversion for configurational assignments. Compound 1 represents the second example of cyclopianes bearing a hydroxyl group at C-13. Compound 2, the third example of conidiogenols, possesses a distinct α-oriented 1-hydroxy group relative to other analogues. The bioassay study demonstrated that compounds 2 and 4-6 exhibited moderate inhibitory effects against five esophageal cancer cell lines with IC50 values ranging from 25 to 55 μM. The cytotoxicities of all compounds toward esophageal cancer cell lines were evaluated for the first time.
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Affiliation(s)
- Zhongbin Cheng
- School of Pharmacy, Henan University, Kaifeng 475004, China; Eucommia Ulmoides Cultivation and Utilization of Henan Engineering Laboratory, Kaifeng 475004, China.
| | - Yuanli Li
- School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Wei Xu
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Wan Liu
- School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Lijun Liu
- School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Daigui Zhu
- School of Pharmacy, Henan University, Kaifeng 475004, China
| | - Ying Kang
- State Key Laboratory of Natural and Biomimetic Drugs, Institute of Ocean Research, Peking University, Beijing 100191, China
| | - Zhuhua Luo
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Qin Li
- School of Pharmacy, Henan University, Kaifeng 475004, China; Eucommia Ulmoides Cultivation and Utilization of Henan Engineering Laboratory, Kaifeng 475004, China.
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27
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Enantioselective synthesis of cis-hydrobenzofurans bearing all-carbon quaternary stereocenters and application to total synthesis of (‒)-morphine. Nat Commun 2019; 10:2507. [PMID: 31175289 PMCID: PMC6555830 DOI: 10.1038/s41467-019-10398-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 05/07/2019] [Indexed: 12/31/2022] Open
Abstract
(‒)-Morphine, which is selected as an essential medicine by World Health Organization, is widely applied in the treatment of the pain-related diseases. Due to its synthetically challenging molecular architecture and important clinical role, extensive synthetic studies of morphine-type alkaloids have been conducted. However, catalytic asymmetric total synthesis of (‒)-morphine remains a long-standing challenge. Here, we disclose an efficient enantioselective total synthesis of (‒)-morphine in a longest linear sequence of 16 steps. The key transformation features a highly enantioselective Robinson annulation enabled by our spiro-pyrrolidine catalyst to rapidly construct the densely functionalized cis-hydrodibenzofuran framework containing vicinal stereocenters with an all-carbon quaternary center. This asymmetric approach provides an alternative strategy for the synthesis of (‒)-morphine and its analogues. (‒)-Morphine is an essential medicine selected by the World Health Organization, however its catalytic asymmetric syntheses have been rarely reported. Here, the authors developed an intramolecular enantioselective Michael addition leading to (‒)-morphine in a longest linear sequence of 16 steps.
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28
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Quaternary-centre-guided synthesis of complex polycyclic terpenes. Nature 2019; 569:703-707. [PMID: 31022719 DOI: 10.1038/s41586-019-1179-2] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 04/16/2019] [Indexed: 11/08/2022]
Abstract
The presence of a quaternary centre-a carbon with four other carbons bonded to it-in any given molecule can have a substantial chemical and biological impact. In many cases, it can enable otherwise challenging chemistry. For example, quaternary centres induce large rate enhancements in cyclization reactions-known as the Thorpe-Ingold effect-which has application in drug delivery for molecules with modest bioavailability1. Similarly, the addition of quaternary centres to a drug candidate can enhance both its activity and its metabolic stability2. When present in chiral ligands3, catalysts4 and auxiliaries5, quaternary centres can guide reactions toward both improved and unique regio-, stereo- and/or enantioselectivity. However, owing to their distinct steric congestion and conformational restriction, the formation of quaternary centres can be achieved reliably by only a few chemical transformations6,7. For particularly challenging cases-for example, the vicinal all-carbon8, oxa- and aza-quaternary centres9 in molecules such as azadirachtin10,11, scopadulcic acid A12,13 and acutumine14-the development of target-specific approaches as well as multiple functional-group and redox manipulations is often necessary. It is therefore desirable to establish alternative ways in which quaternary centres can positively affect and guide synthetic planning. Here we show that if a synthesis is designed such that each quaternary centre is deliberately leveraged to simplify the construction of the next-either through rate acceleration or blocking effects-then highly efficient, scalable and modular syntheses can result. This approach is illustrated using the conidiogenone family of terpenes as a representative case; however, this framework provides a distinct planning logic that is applicable to other targets of similar synthetic complexity that contain multiple quaternary centres.
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29
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Guo R, Mo X, Zhang G. Synthesis of 2-(2-Oxo-2-phenylethyl)cyclopentanone by Rhodium-Catalyzed Tandem Alkynyl Cyclobutanols Hydroacylation and Semipinacol Rearrangement. Org Lett 2019; 21:1263-1267. [PMID: 30753082 DOI: 10.1021/acs.orglett.8b03973] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A rhodium-catalyzed tandem reaction of alkynyl cyclobutanols with salicylaldehydes has been developed. The reaction offers a new and atom-economical approach for the selective preparation of multisubstituted 2-(2-oxo-2-phenylethyl)cyclopentanone in high yields under mild reaction conditions with tolerance of a broad range of substituted alkynyl cyclobutanols and salicylaldehyes. The isolation of intermediate suggests that the reaction proceeds through a sequential process of intermolecular hydroacylation and semipinacol rearrangement.
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Affiliation(s)
- Rui Guo
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road , Shanghai 200032 , P. R. China
| | - Xueling Mo
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road , Shanghai 200032 , P. R. China
| | - Guozhu Zhang
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road , Shanghai 200032 , P. R. China
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30
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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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31
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Shiina T, Nakagawa K, Fujisaki Y, Ozaki T, Liu C, Toyomasu T, Hashimoto M, Koshino H, Minami A, Kawaide H, Oikawa H. Biosynthetic study of conidiation-inducing factor conidiogenone: heterologous production and cyclization mechanism of a key bifunctional diterpene synthase. Biosci Biotechnol Biochem 2018; 83:192-201. [PMID: 30343633 DOI: 10.1080/09168451.2018.1536518] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Conidiogenone, a diterpene with a unique structure, is known to induce the conidiation of Penicillium cyclopium. The biosynthetic pathway of (-)-conidiogenone has been fully elucidated by the heterologous expression of biosynthetic genes in Aspergillus oryzae and by in vitro enzyme assay with 13C-labeled substrates. After construction of deoxyconidiogenol by the action of bifunctional terpene synthase, one cytochrome P450 catalyzes two rounds of oxidation to furnish conidiogenone. Notably, similar biosynthetic genes are conserved among more than 10 Penicillium sp., suggesting that conidiogenone is a common conidiation inducer in this genus. The cyclization mechanism catalyzed by terpene synthase, which involves successive 1,2-alkyl shifts, was fully elucidated using 13C-labeled geranylgeranyl pyrophosphate (GGPP) as substrate. During the structural analysis of deoxyconidiogenol, we observed broadening of some of the 13C signals measured at room temperature, which has not been observed with other structurally related compounds. Careful examination using techniques including 13C NMR studies at -80 °C, conformational analysis and prediction of the 13C chemical shifts using density functional theory gave insights into this intriguing phenomenon.
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Affiliation(s)
- Tetsuya Shiina
- a Department of Chemistry, Faculty of Science , Hokkaido University , Sapporo , Japan
| | - Kazuya Nakagawa
- b Institute of Agriculture , Tokyo University of Agriculture and Technology , Fuchu , Japan
| | - Yukiko Fujisaki
- c Department of Agriculture , Yamagata University , Tsuruoka , Japan
| | - Taro Ozaki
- a Department of Chemistry, Faculty of Science , Hokkaido University , Sapporo , Japan
| | - Chengwei Liu
- a Department of Chemistry, Faculty of Science , Hokkaido University , Sapporo , Japan
| | - Tomonobu Toyomasu
- c Department of Agriculture , Yamagata University , Tsuruoka , Japan
| | - Masaru Hashimoto
- d Faculty of Agriculture and Life Science , Hirosaki University , Hirosaki , Japan
| | - Hiroyuki Koshino
- e Center for Sustainable Resource Science , RIKEN , Wako-shi , Japan
| | - Atsushi Minami
- a Department of Chemistry, Faculty of Science , Hokkaido University , Sapporo , Japan
| | - Hiroshi Kawaide
- b Institute of Agriculture , Tokyo University of Agriculture and Technology , Fuchu , Japan
| | - Hideaki Oikawa
- a Department of Chemistry, Faculty of Science , Hokkaido University , Sapporo , Japan
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32
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Mitsuhashi T, Kikuchi T, Hoshino S, Ozeki M, Awakawa T, Shi SP, Fujita M, Abe I. Crystalline Sponge Method Enabled the Investigation of a Prenyltransferase-terpene Synthase Chimeric Enzyme, Whose Product Exhibits Broadened NMR Signals. Org Lett 2018; 20:5606-5609. [PMID: 30179018 DOI: 10.1021/acs.orglett.8b02284] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
By the genome-mining approach, a chimeric enzyme of prenyltransferase-diterpene synthase was discovered from Penicillium chrysogenum MT-12. Since its product exhibited broadened NMR signals, the structural determination by only the NMR analysis was difficult, but the crystalline sponge method successfully revealed the structure with a 6-5-5-5 fused ring system. This demonstrated that the collaboration between the genome-mining and crystalline sponge method has the potential to facilitate rapid inquiries into the unexplored chemical space of small molecules.
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Affiliation(s)
- Takaaki Mitsuhashi
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
| | - Takashi Kikuchi
- Rigaku Corporation , 3-9-12 Matsubara-cho, Akishima-shi , Tokyo 196-8666 , Japan
| | - Shotaro Hoshino
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
| | - Masahiro Ozeki
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
| | - Takayoshi Awakawa
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan.,Collaborative Research Institute for Innovative Microbiology , The University of Tokyo , Yayoi 1-1-1, Bunkyo-ku , Tokyo 113-8657 , Japan
| | - She-Po Shi
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica , Beijing University of Chinese Medicine , Beijing 100029 , People's Republic of China
| | - Makoto Fujita
- Department of Applied Chemistry, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-8656 , Japan
| | - Ikuro Abe
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan.,Collaborative Research Institute for Innovative Microbiology , The University of Tokyo , Yayoi 1-1-1, Bunkyo-ku , Tokyo 113-8657 , Japan
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33
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Pramthaisong C, Worayuthakarn R, Pharikronburee V, Duangthongyou T, Rattanakam R, Ruchirawat S, Thasana N. Base-Mediated Cascade Cyclization: Stereoselective Synthesis of Benzooxazocinone. Org Lett 2018; 20:4015-4019. [DOI: 10.1021/acs.orglett.8b01573] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chiranan Pramthaisong
- Chemical Biology Program, Chulabhorn Graduate Institute, Laksi, Bangkok 10210, Thailand
| | - Rattana Worayuthakarn
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, Laksi, Bangkok 10210, Thailand
| | - Vannapha Pharikronburee
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, Laksi, Bangkok 10210, Thailand
| | - Tanwawan Duangthongyou
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10903, Thailand
| | - Ramida Rattanakam
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10903, Thailand
| | - Somsak Ruchirawat
- Chemical Biology Program, Chulabhorn Graduate Institute, Laksi, Bangkok 10210, Thailand
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, Laksi, Bangkok 10210, Thailand
- Center of Excellence on Environmental Health and Toxicology, Ministry of Education, Bangkok, Thailand
| | - Nopporn Thasana
- Chemical Biology Program, Chulabhorn Graduate Institute, Laksi, Bangkok 10210, Thailand
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, Laksi, Bangkok 10210, Thailand
- Center of Excellence on Environmental Health and Toxicology, Ministry of Education, Bangkok, Thailand
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34
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Narita K, Minami A, Ozaki T, Liu C, Kodama M, Oikawa H. Total Biosynthesis of Antiangiogenic Agent (-)-Terpestacin by Artificial Reconstitution of the Biosynthetic Machinery in Aspergillus oryzae. J Org Chem 2018; 83:7042-7048. [PMID: 29417814 DOI: 10.1021/acs.joc.7b03220] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The total biosynthesis of (-)-terpestacin was achieved by heterologous expression of four biosynthetic enzyme genes ( tpcA- D) in Aspergillus oryzae. After construction of preterpestacin I by the action of bifunctional terpene synthase (TpcA), two cytochrome P450s (TpcBC) activate inert C-H bond to install three hydroxyl groups on the A-ring in stereo- and regioselective manners. Subsequently, a flavin-dependent oxidase (TpcD) catalyzes oxidation of the vicinal diol moiety to give a α-diketone, which undergoes an enolization to furnish terpestacin. The successful synthesis of structurally elaborated terpestacin showed that a reconstitution approach that harnesses several biosynthetic enzyme genes in A. oryzae could be a promising alternative to the current chemical synthesis of natural terpenoids.
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Affiliation(s)
- Koji Narita
- Division of Chemistry, Graduate School of Science , Hokkaido University , Sapporo 060-0810 , Japan
| | - Atsushi Minami
- Division of Chemistry, Graduate School of Science , Hokkaido University , Sapporo 060-0810 , Japan
| | - Taro Ozaki
- Division of Chemistry, Graduate School of Science , Hokkaido University , Sapporo 060-0810 , Japan
| | - Chengwei Liu
- Division of Chemistry, Graduate School of Science , Hokkaido University , Sapporo 060-0810 , Japan
| | - Motoichiro Kodama
- Faculty of Agriculture , Tottori University , Tottori 680-8553 , Japan
| | - Hideaki Oikawa
- Division of Chemistry, Graduate School of Science , Hokkaido University , Sapporo 060-0810 , Japan
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35
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Abstract
Covering: 2016. Previous review: Nat. Prod. Rep., 2017, 34, 235-294This review covers the literature published in 2016 for marine natural products (MNPs), with 757 citations (643 for the period January to December 2016) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1277 in 432 papers for 2016), together with the relevant biological activities, source organisms and country of origin. Reviews, biosynthetic studies, first syntheses, and syntheses that led to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- School of Physical and Chemical Sciences, University of Canterbury, Christchurch, New Zealand
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36
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Niu S, Fan Z, Tang X, Liu Q, Shao Z, Liu G, Yang XW. Cyclopiane-type diterpenes from the deep-sea-derived fungus Penicillium commune MCCC 3A00940. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.12.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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37
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Yang J, Xu W, Cui Q, Fan X, Wang LN, Yu ZX. Asymmetric Total Synthesis of (−)-Clovan-2,9-dione Using Rh(I)-Catalyzed [3 + 2 + 1] Cycloaddition of 1-Yne-vinylcyclopropane and CO. Org Lett 2017; 19:6040-6043. [DOI: 10.1021/acs.orglett.7b02656] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Yang
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Wenbo Xu
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Qi Cui
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Xing Fan
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Lu-Ning Wang
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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38
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Donahue MG, Jentsch NG, Realini EC. An intramolecular para-phenolic allylation free radical cyclization strategy for the synthesis of alkaloids and terpenes with spiro[4.5]decane architectures. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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39
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Niu S, Fan ZW, Xie CL, Liu Q, Luo ZH, Liu G, Yang XW. Spirograterpene A, a Tetracyclic Spiro-Diterpene with a Fused 5/5/5/5 Ring System from the Deep-Sea-Derived Fungus Penicillium granulatum MCCC 3A00475. JOURNAL OF NATURAL PRODUCTS 2017; 80:2174-2177. [PMID: 28692272 DOI: 10.1021/acs.jnatprod.7b00475] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A novel spiro-tetracyclic diterpene, spirograterpene A (1), was isolated from the deep-sea-derived fungus Penicillium granulatum MCCC 3A00475, together with two biosynthetically related cyclopianes, conidiogenone I (2) and conidiogenone C (3). The relative configuration of 1 was elucidated by extensive spectroscopic analyses, and the absolute structure was established by the modified Mosher's method. Compound 1 is the second example of a diterpene featuring a 5/5/5/5 spirocyclic carbon skeleton. It showed modest antiallergic activity.
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Affiliation(s)
- Siwen Niu
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Third Institute of Oceanography, State Oceanic Administration , 184 Daxue Road, Xiamen 361005, People's Republic of China
| | - Zuo-Wang Fan
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Third Institute of Oceanography, State Oceanic Administration , 184 Daxue Road, Xiamen 361005, People's Republic of China
| | - Chun-Lan Xie
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Third Institute of Oceanography, State Oceanic Administration , 184 Daxue Road, Xiamen 361005, People's Republic of China
| | - Qingmei Liu
- College of Food and Biological Engineering, Jimei University , 43 Yindou Road, Xiamen 361021, People's Republic of China
| | - Zhu-Hua Luo
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Third Institute of Oceanography, State Oceanic Administration , 184 Daxue Road, Xiamen 361005, People's Republic of China
| | - Guangming Liu
- College of Food and Biological Engineering, Jimei University , 43 Yindou Road, Xiamen 361021, People's Republic of China
| | - Xian-Wen Yang
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources, Fujian Key Laboratory of Marine Genetic Resources, South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Third Institute of Oceanography, State Oceanic Administration , 184 Daxue Road, Xiamen 361005, People's Republic of China
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40
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Abstract
The formal total synthesis of (±)-lycojaponicumin C has been accomplished. Key transformations include a Rh-catalyzed formal [3 + 2] cycloaddition reaction to construct the bicyclic [3.3.0] scaffold bearing two vicinal quaternary carbon centers, a stereoselective γ-hydroxyl directed Michael addition to introduce the vinyl group at a bulky position, and a late-stage ring-closing metathesis reaction to form the cyclohexanone ring.
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Affiliation(s)
- Nan Zheng
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School , Shenzhen 518055, China
| | - Lijie Zhang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School , Shenzhen 518055, China
| | - Jianxian Gong
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School , Shenzhen 518055, China
| | - Zhen Yang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School , Shenzhen 518055, China.,Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), and Peking-Tsinghua Center for Life Sciences, Peking University , Beijing 100871, China
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41
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Li Y, Li J, Ding H, Li A. Recent advances on the total synthesis of alkaloids in mainland China. Natl Sci Rev 2017. [DOI: 10.1093/nsr/nwx050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
AbstractAlkaloids are a large family of natural products that mostly contain basic nitrogen atoms. Because of their intriguing structures and important functions, they have long been popular targets for synthetic organic chemists. China's chemists have made significant progress in the area of alkaloid synthesis over past decades. In this article, selected total syntheses of alkaloids from research groups in mainland China during the period 2011–16 are highlighted.
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Affiliation(s)
- Yong 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, China
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing 312000, China
| | - Jian 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, China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310028, 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, China
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