1
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Huang BB, Zhao YL, Lei K, Zhong LR, Yang X, Yao ZJ. Enantioselective Total Synthesis of (+)-Sieboldine A and Analogues Thereof. Org Lett 2022; 24:7517-7521. [PMID: 36214606 DOI: 10.1021/acs.orglett.2c02737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An 11-step enantioselective total synthesis of (+)-sieboldine A (1) has been accomplished from (5R)-methylcyclohex-2-en-1-one (16), in which an intramolecular ketone/ester reductive coupling followed by one-pot acidic treatment to quickly construct the unique oxa-spiroacetal and a TsOH-catalyzed displacement to directly form the characteristic N-hydroxyazacyclononane ring successfully served as the key methodologies. Moreover, several full-skeleton analogues of 1 were also synthesized on the basis of the advanced intermediates, and their inhibitory effects on electric eel acetylcholinesterase were examined.
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Affiliation(s)
- Bing-Bing Huang
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Yi-Lu Zhao
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Kaiyu Lei
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Lin-Rui Zhong
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Xiaoliang Yang
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Zhu-Jun Yao
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
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2
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Blechschmidt DR, Lovstedt A, Kass SR. Metallocenium Lewis Acid Catalysts for Use in Friedel–Crafts Alkylation and Diels–Alder Reactions. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel R. Blechschmidt
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Alex Lovstedt
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Steven R. Kass
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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3
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Stöckl Y, Fellmeth T, Bauer F, Wank B, Frey W, Claasen B, Zens A, Köhn A, Laschat S. Chasing polycyclic natural products: 5/6/5‐ or 5/6/6‐carbotricyclic scaffold construction via stereodivergent Diels‐Alder reaction of chiral hydrindanes and their boron complexes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101416] [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)
- Yannick Stöckl
- Universität Stuttgart: Universitat Stuttgart Institut für Organische Chemie GERMANY
| | - Thomas Fellmeth
- University of Stuttgart: Universitat Stuttgart Institut für Theoretische Chemie GERMANY
| | - Florian Bauer
- University of Stuttgart: Universitat Stuttgart Institut für Theoretische Chemie GERMANY
| | - Bianca Wank
- Universität Stuttgart: Universitat Stuttgart Institut für Organische Chemie GERMANY
| | - Wolfgang Frey
- Universität Stuttgart: Universitat Stuttgart Institut für Organische Chemie GERMANY
| | - Birgit Claasen
- Universität Stuttgart: Universitat Stuttgart Institut für Organische Chemie GERMANY
| | - Anna Zens
- Universität Stuttgart: Universitat Stuttgart Institut für Organische Chemie GERMANY
| | - Andreas Köhn
- Universität Stuttgart: Universitat Stuttgart Institut für Theoretische Chemie GERMANY
| | - Sabine Laschat
- Universität Stuttgart Institut für Organische Chemie Pfaffenwaldring 55 70569 Stuttgart GERMANY
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4
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Highly Diastereoselective Chelation-Controlled 1,3-anti-Allylation of (S)-3-(Methoxymethyl)hexanal Enabled by Hydrate of Scandium Triflate. Symmetry (Basel) 2021. [DOI: 10.3390/sym13030470] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
En route to the total synthesis of (+)-Neopeltolide, we explored Lewis acid-assisted diastereoselective allylation of MOM-protected 3-hydroxylhexanal with β-(2,2-diethoxyethyl)-substituted (allyl)tributylstannane. The hydrated form of scandium triflate was found to be essential for attaining high 1,3-anti-diastereoselectivity (d.r. 94:6), while the use of anhydrous catalyst resulted in a modest diastereocontrol (d.r. 76:24). The preferred 1,3-anti-selectivity in this transformation can be rationalized in the framework of the Reetz chelate model of asymmetric induction. The 1,3-anti-configuration of the product was confirmed by its conversion into the known C7-C16 building block of (+)-Neopeltolide. We also report an improved protocol for the synthesis of β-(2,2-diethoxyethyl)-substituted (allyl)tributylstannane, which can be utilized as a cost-efficient bipolar isoprenoid-type C5-building block in the synthesis of natural compounds.
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5
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Wang J, Zhang ZK, Jiang FF, Qi BW, Ding N, Hnin SYY, Liu X, Li J, Wang XH, Tu PF, Abe I, Morita H, Shi SP. Deciphering the Biosynthetic Mechanism of Pelletierine in Lycopodium Alkaloid Biosynthesis. Org Lett 2020; 22:8725-8729. [PMID: 33104367 DOI: 10.1021/acs.orglett.0c03339] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Pelletierine, a proposed building block of Lycopodium alkaloids (LAs), was demonstrated to be synthesized via the non-enzymatic Mannich-like condensation of Δ1-piperideine and 3-oxoglutaric acid produced by two new type III PKSs (HsPKS4 and PcPKS1) characterized from Huperzia serrata and Phlegmariurus cryptomerianus, respectively. The findings provide new insights for further understanding the biosynthesis of LAs such as huperzine A.
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Affiliation(s)
- Juan Wang
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Ze-Kun Zhang
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Fang-Fang Jiang
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Bo-Wen Qi
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Ning Ding
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Saw Yu Yu Hnin
- Institute of Natural Medicine, University of Toyama, Sugitani-2630, Toyama 930-0194, Japan
| | - Xiao Liu
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Jun Li
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Xiao-Hui Wang
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Peng-Fei Tu
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Ikuro Abe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroyuki Morita
- Institute of Natural Medicine, University of Toyama, Sugitani-2630, Toyama 930-0194, Japan
| | - She-Po Shi
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
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6
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Evolution of Pauson-Khand Reaction: Strategic Applications in Total Syntheses of Architecturally Complex Natural Products (2016–2020). Catalysts 2020. [DOI: 10.3390/catal10101199] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Metal-mediated cyclizations are important transformations in a natural product total synthesis. The Pauson-Khand reaction, particularly powerful for establishing cyclopentenone-containing structures, is distinguished as one of the most attractive annulation processes routinely employed in synthesis campaigns. This review covers Co, Rh, and Pd catalyzed Pauson-Khand reaction and summarizes its strategic applications in total syntheses of structurally complex natural products in the last five years. Additionally, the hetero-Pauson-Khand reaction in the synthesis of heterocycles will also be discussed. Focusing on the panorama of organic synthesis, this review highlights the strategically developed Pauson-Khand reaction in fulfilling total synthetic tasks and its synthetic attractiveness is aimed to be illustrated.
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7
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Abstract
Previously, we have finished the total synthesis of lycojaponicumin A (2) via development of an efficient synthetic strategy using semipinacol rearrangement as a key step. In order to further demonstrate the generality of this synthetic route, herein, we report the total synthesis of another fawcettimine-type alkaloid sieboldine A (1) from the same intermediate, which possesses an A/B/D tricyclic ring system and vicinal quaternary centers of 1. The synthesis features late-stage site-selective redox reactions, Schmidt glycosylation cyclization, and highly selective transformations.
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Affiliation(s)
- Hui Shao
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China.,Key Laboratory of Applied Surface and Colloid Chemistry & School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Yun-Peng Wang
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Kun Fang
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yu-Ming Zhao
- Key Laboratory of Applied Surface and Colloid Chemistry & School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Yong-Qiang Tu
- School of Chemistry and Chemical Engineering, Frontiers Science Center of Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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8
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Kaneko H, Takahashi S, Kogure N, Kitajima M, Takayama H. Asymmetric Total Synthesis of Fawcettimine-Type Lycopodium Alkaloid, Lycopoclavamine-A. J Org Chem 2019; 84:5645-5654. [PMID: 30919625 DOI: 10.1021/acs.joc.9b00586] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
An asymmetric total synthesis of lycopoclavamine-A (1), a structurally unique fawcettimine-type Lycopodium alkaloid, was achieved via a stereoselective Pauson-Khand reaction and a stereoselective conjugate addition to construct a quaternary carbon center at C-12.
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Affiliation(s)
- Hiroki Kaneko
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1 Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Shunsuke Takahashi
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1 Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Noriyuki Kogure
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1 Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Mariko Kitajima
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1 Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Hiromitsu Takayama
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1 Inohana , Chuo-ku, Chiba 260-8675 , Japan
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9
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Ma K, Martin BS, Yin X, Dai M. Natural product syntheses via carbonylative cyclizations. Nat Prod Rep 2019; 36:174-219. [PMID: 29923586 DOI: 10.1039/c8np00033f] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review summarizes the application of various transition metal-catalyzed/mediated carbonylative cyclization reactions in natural product total synthesis.
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Affiliation(s)
- Kaiqing Ma
- Department of Chemistry
- Center for Cancer Research
- Institute for Drug Discovery
- Purdue University
- West Lafayette
| | - Brandon S. Martin
- Department of Chemistry
- Center for Cancer Research
- Institute for Drug Discovery
- Purdue University
- West Lafayette
| | - Xianglin Yin
- Department of Chemistry
- Center for Cancer Research
- Institute for Drug Discovery
- Purdue University
- West Lafayette
| | - Mingji Dai
- Department of Chemistry
- Center for Cancer Research
- Institute for Drug Discovery
- Purdue University
- West Lafayette
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10
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Huang WY, Nishikawa T, Nakazaki A. Toward a Synthesis of Fawcettimine-Type Lycopodium Alkaloids: Stereocontrolled Synthesis of a Functionalized Azaspirocycle Precursor. J Org Chem 2018; 83:11108-11117. [PMID: 30113169 DOI: 10.1021/acs.joc.8b01719] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The stereocontrolled synthesis of a new azaspirocycle precursor of the fawcettimine-type Lycopodium alkaloids is described. Our approach provides an efficient entry to the azaspirocycle via a cascade Wacker-allylation sequence followed by a highly stereoselective Claisen rearrangement. This azaspirocycle, bearing all of the requisite functionality with pivotal stereogenic centers, is considered to be a versatile precursor useful for the fawcettimine-type Lycopodium alkaloids.
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Affiliation(s)
- Wen-Yu Huang
- Graduate School of Bioagricultural Sciences , Nagoya University , Furo-cho, Chikusa, Nagoya 464-8601 , Japan
| | - Toshio Nishikawa
- Graduate School of Bioagricultural Sciences , Nagoya University , Furo-cho, Chikusa, Nagoya 464-8601 , Japan
| | - Atsuo Nakazaki
- Graduate School of Bioagricultural Sciences , Nagoya University , Furo-cho, Chikusa, Nagoya 464-8601 , Japan
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11
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Synthesis and application of N-hydroxy(tetrahydrofuran-2-yl)amines. Russ Chem Bull 2018. [DOI: 10.1007/s11172-017-1972-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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12
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Li H, Lei X. Fawcettimine-TypeLycopodiumAlkaloids as a Driving Force for Discoveries in Organic Synthesis. CHEM REC 2017; 18:543-554. [DOI: 10.1002/tcr.201700047] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 12/01/2017] [Indexed: 12/17/2022]
Affiliation(s)
- Houhua Li
- Department of Chemical Biology; Max Planck Institute of Molecular Physiology; Otto-Hahn-Str. 11 D-44227 Dortmund Germany
| | - Xiaoguang Lei
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Department of Chemical Biology, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center, and Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 China
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13
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Brantley CL, Coombs TC. Intermolecular Pauson–Khand reactions of N-substituted maleimides. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.10.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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14
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Burrows LC, Jesikiewicz LT, Lu G, Geib SJ, Liu P, Brummond KM. Computationally Guided Catalyst Design in the Type I Dynamic Kinetic Asymmetric Pauson-Khand Reaction of Allenyl Acetates. J Am Chem Soc 2017; 139:15022-15032. [PMID: 29022341 DOI: 10.1021/jacs.7b07121] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The Rh(I)-catalyzed allenic Pauson-Khand reaction (APKR) is an efficient, redox-neutral method of synthesizing α-acyloxy cyclopentenones. An enantioselective APKR could provide access to chiral, nonracemic α-acyloxy and α-hydroxy cyclopentenones and their corresponding redox derivatives, such as thapsigargin, a cytotoxic natural product with potent antitumor activity. Rapid scrambling of axial chirality of allenyl acetates in the presence of Rh(I) catalysts enables the conversion of racemic allene to enantiopure cyclopentenone product in a dynamic kinetic asymmetric transformation (DyKAT). A combined experimental and computational approach was taken to develop an effective catalytic system to achieve the asymmetric transformation. The optimization of the denticity, and steric and electronic properties of the ancillary ligand (initially (S)-MonoPhos, 58:42 er), afforded a hemilabile bidentate (S)-MonoPhos-alkene-Rh(I) catalyst that provided α-acyloxy cyclopentenone product in up to 14:86 er. Enantioselectivity of the Rh(I)-(S)-MonoPhos-alkene catalyst was rationalized using ligand-substrate steric interactions and distortion energies in the computed transition states. This asymmetric APKR of allenyl acetates is a rare example of a Type I DyKAT reaction of an allene, the first example of DyKAT in a cyclocarbonylation reaction, and the first catalyst-controlled enantioselective APKR.
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Affiliation(s)
- Lauren C Burrows
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Luke T Jesikiewicz
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Gang Lu
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Steven J Geib
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Kay M Brummond
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
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15
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Kandimalla SR, Sabitha G. Diversity-Oriented Synthesis of Oxacyclic Spirooxindole Derivatives through Ring-Closing Enyne Metathesis and Intramolecular Pauson-Khand (2+2+1) Cyclization of Oxindole Enynes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700511] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Satheeshkumar Reddy Kandimalla
- Natural Products Chemistry Division; CSIR - Indian Institute of Chemical Technology; Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi 110 025 India
| | - Gowravaram Sabitha
- Natural Products Chemistry Division; CSIR - Indian Institute of Chemical Technology; Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi 110 025 India
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