1
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Wang YT, Wu JL, Chiou WH. Total Synthesis of (±)-Fasicularin through Double Consecutive Epimerizations. Org Lett 2022; 24:5957-5961. [PMID: 35938924 DOI: 10.1021/acs.orglett.2c02225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The total synthesis of tricyclic marine alkaloid fasicularin (1b) has been accomplished from a novel sterically well-defined α-aminonitrile 7, featuring a novel double consecutive epimerization process and Ir-catalyzed reductive functionalization of a tertiary γ-lactam. The required configuration is obtained through the thermodynamically stereoselectively driven isomerization of a readily available 8a-cyanodecahydroquinoline framework. The strategy allows us to achieve the tricyclic core structures efficiently from affordable starting materials through simple operations.
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Affiliation(s)
- Yu-Tang Wang
- Department of Chemistry, National Chung-Hsing University, Taichung 402, Taiwan, ROC
| | - Jui-Lin Wu
- Department of Chemistry, National Chung-Hsing University, Taichung 402, Taiwan, ROC
| | - Wen-Hua Chiou
- Department of Chemistry, National Chung-Hsing University, Taichung 402, Taiwan, ROC
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2
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Nishikawa K, Kumagai M, Matsumura K, Nishikibe K, Morimoto Y. Natural Product Synthesis Strategy Based on the Concept of Directly Constructing the Ring Skeletons from Linear Substrates. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Keisuke Nishikawa
- Department of Chemistry, Graduate School of Science, Osaka City University
| | | | | | | | - Yoshiki Morimoto
- Department of Chemistry, Graduate School of Science, Osaka City University
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3
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Shimomura M, Sato M, Azuma H, Sakata J, Tokuyama H. Total Synthesis of (-)-Lepadiformine A via Radical Translocation-Cyclization Reaction. Org Lett 2020; 22:3313-3317. [PMID: 32182082 DOI: 10.1021/acs.orglett.0c00474] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Total synthesis of (-)-lepadiformine A featuring construction of the 1-azaspiro[4.5]decane skeleton by a highly diastereoselective radical translocation-cyclization reaction of a γ-lactam derivative bearing a chiral butenolide moiety is described. The enantioselective construction of butenolide is conducted via Krische's catalytic asymmetric allylation protocol. After the radical translocation-cyclization reaction, a hydroxymethyl group at the C-13 position was stereoselectively introduced by a one-pot partial reduction-allylation protocol of the unprotected lactam derivative. Finally, the total synthesis is completed by formation of a C ring.
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Affiliation(s)
- Masashi Shimomura
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Manabu Sato
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Hiroki Azuma
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Juri Sakata
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Hidetoshi Tokuyama
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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4
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Guo LD, Hou J, Tu W, Zhang Y, Zhang Y, Chen L, Xu J. Total Synthesis of Dapholdhamine B and Dapholdhamine B Lactone. J Am Chem Soc 2019; 141:11713-11720. [DOI: 10.1021/jacs.9b05641] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Lian-Dong Guo
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, China
| | - Jieping Hou
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, China
| | - Wentong Tu
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, China
| | - Yan Zhang
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, China
| | - Yue Zhang
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, China
| | - Louxi Chen
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, China
| | - Jing Xu
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, China
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5
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Takashima K, Hayakawa D, Gouda H, Toyooka N. Formal Syntheses of (−)-Lepadiformines A, C, and (−)-Fasicularin. J Org Chem 2019; 84:5222-5229. [DOI: 10.1021/acs.joc.9b00071] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Hiroaki Gouda
- School of Pharmacy, Showa University, Tokyo 142-8555, Japan
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6
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Yamamoto S, Komiya Y, Kobayashi A, Minamikawa R, Oishi T, Sato T, Chida N. Asymmetric Total Synthesis of Fasicularin by Chiral N-Alkoxyamide Strategy. Org Lett 2019; 21:1868-1871. [DOI: 10.1021/acs.orglett.9b00478] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shio Yamamoto
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Yukinori Komiya
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Akihiro Kobayashi
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Ryo Minamikawa
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Takeshi Oishi
- School of Medicine, Keio University, 4-1-1, Hiyoshi,
Kohoku-ku, Yokohama 223-8521, Japan
| | - Takaaki Sato
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Noritaka Chida
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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7
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Burnley J, Wang ZJ, Jackson WR, Robinson AJ. Cross-Metathesis Approach to the Tricyclic Marine Alkaloids (−)-Fasicularin and (−)-Lepadiformine A. J Org Chem 2017; 82:8497-8505. [DOI: 10.1021/acs.joc.7b01135] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James Burnley
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Zhen J. Wang
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - W. Roy Jackson
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Andrea J. Robinson
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
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8
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Nishikawa K, Yamauchi K, Kikuchi S, Ezaki S, Koyama T, Nokubo H, Matsumura K, Kodama T, Kumagai M, Morimoto Y. Total Syntheses of Lepadiformine Marine Alkaloids with Enantiodivergency, Utilizing Hg(OTf)
2
‐Catalyzed Cycloisomerization Reaction and their Cytotoxic Activities. Chemistry 2017; 23:9535-9545. [DOI: 10.1002/chem.201701475] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Keisuke Nishikawa
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Kengo Yamauchi
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Seiho Kikuchi
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Shinnosuke Ezaki
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Tomoyuki Koyama
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Haruka Nokubo
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Kunihiro Matsumura
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Takeshi Kodama
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Momochika Kumagai
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
- Japan Food Research Laboratories Ibaraki-shi Osaka 567-0085 Japan
| | - Yoshiki Morimoto
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
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9
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Lee S, Bae M, In J, Kim JH, Kim S. Asymmetric Total Synthesis of Lepadiformine C Using Memory of Chirality in an Intramolecular Ester Enolate Michael Addition. Org Lett 2016; 19:254-257. [DOI: 10.1021/acs.orglett.6b03550] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Seokwoo Lee
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Minsik Bae
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Jinkyung In
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Jae Hyun Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Sanghee Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
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10
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Tsukanov SV, Marks LR, Comins DL. Studies toward the Synthesis of Lepadiformine A. J Org Chem 2016; 81:10433-10443. [PMID: 27626463 DOI: 10.1021/acs.joc.6b01514] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein is described an original approach to access a tricyclic framework of the lepadiformine-type alkaloids. A Grignard/N-acylpyridinium salt reaction of a 4-methoxytetrahydroquinoline is the key carbon-carbon bond-forming step that was used to establish the desired absolute stereochemistry at the C2 position of the target alkaloid. The synthesis features an allylation reaction with an N-acyliminium ion to set the C10 quaternary stereocenter, a mild dissolving-metal cleavage of hindered phenyl carbamates, and an aminoiodocyclization to form the pyrrolidine ring. While this route does not provide the correct C10 stereochemistry, it showcases an efficient method to build analogues with the ring system of this class of alkaloids in 11 steps overall.
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Affiliation(s)
- Sergey V Tsukanov
- Department of Chemistry, North Carolina State University , Raleigh, North Carolina 27695-8204, United States
| | - Lucas R Marks
- Department of Chemistry, North Carolina State University , Raleigh, North Carolina 27695-8204, United States
| | - Daniel L Comins
- Department of Chemistry, North Carolina State University , Raleigh, North Carolina 27695-8204, United States
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11
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Abstract
The synthesis of a tricyclic marine alkaloid, fasicularin, was accomplished. Stereoselective synthesis of the aza-spirocyclic BC-ring precursor and ensuing construction of the A-ring with stereocontrolled installation of the C2 hexyl group feature prominently in the synthesis.
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Affiliation(s)
- Atsushi Kaga
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore
| | - Ya Lin Tnay
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore
| | - Shunsuke Chiba
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore
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12
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Mailyan AK, Eickhoff JA, Minakova AS, Gu Z, Lu P, Zakarian A. Cutting-Edge and Time-Honored Strategies for Stereoselective Construction of C–N Bonds in Total Synthesis. Chem Rev 2016; 116:4441-557. [DOI: 10.1021/acs.chemrev.5b00712] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Artur K. Mailyan
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - John A. Eickhoff
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Anastasiia S. Minakova
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Zhenhua Gu
- Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Ping Lu
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Armen Zakarian
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
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13
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Abstract
Dissection of lepadiformine by a double hydroamination transform affords a simple achiral amino diene. This reaction is accomplished in the forward sense by amine-directed hydroboration and an oxidative alkyl shift to nitrogen, both of which occur with high stereoselectivity to generate three stereogenic centers and the lepadiformine skeleton.
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Affiliation(s)
- M Greg Tabor
- Department of Chemistry, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Ryan A Shenvi
- Department of Chemistry, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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14
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Nishikawa K, Kikuchi S, Ezaki S, Koyama T, Nokubo H, Kodama T, Tachi Y, Morimoto Y. Total Synthesis of (−)-Lepadiformine A Utilizing Hg(OTf)2-Catalyzed Cycloisomerization Reaction. Org Lett 2015; 17:5772-5. [DOI: 10.1021/acs.orglett.5b02867] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Keisuke Nishikawa
- Department of Chemistry,
Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Seiho Kikuchi
- Department of Chemistry,
Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Shinnosuke Ezaki
- Department of Chemistry,
Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Tomoyuki Koyama
- Department of Chemistry,
Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Haruka Nokubo
- Department of Chemistry,
Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Takeshi Kodama
- Department of Chemistry,
Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Yoshimitsu Tachi
- Department of Chemistry,
Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Yoshiki Morimoto
- Department of Chemistry,
Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
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15
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In J, Lee S, Kwon Y, Kim S. Divergent Total Synthesis of the Tricyclic Marine Alkaloids Lepadiformine, Fasicularin, and Isomers of Polycitorols by Reagent-Controlled Diastereoselective Reductive Amination. Chemistry 2014; 20:17433-42. [DOI: 10.1002/chem.201404316] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Indexed: 11/12/2022]
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16
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Köhler née Adrien A, Raabe G, Runsink J, Köhler F, Gais HJ. Sulfoximine-Based Modular Enantioselective Synthesis of Azaspirocycles Featuring Sulfoximine Displacement, Dianion Cycloalkylation, RCM andN-Acyliminium Ion Formation. European J Org Chem 2014. [DOI: 10.1002/ejoc.201400068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Dalton DM, Rovis T. Catalytic, asymmetric indolizidinone aza-quaternary stereocenter synthesis: expedient synthesis of the cylindricine alkaloid core. Org Lett 2013; 15:2346-9. [PMID: 23631448 PMCID: PMC3809156 DOI: 10.1021/ol400529k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The Rh(I)•CKphos catalyzed [2 + 2 + 2] cycloaddition of 1,1-disubstituted alkenyl isocyanates and alkyl alkynes selectively forms previously inaccessible vinylogous amide indolizidinone cycloadducts, establishing an aza-quaternery stereocenter with excellent enantioselectivities (up to 98% ee). This advance enables a seven step catalytic, asymmetric synthesis of the tricyclic core of the cylindricine alkaloids with excellent control of product selectivity as well as regio- and enantioselectivity.
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Affiliation(s)
- Derek M. Dalton
- Department of Chemistry, Colorado State University, Ft. Collins, CO 80523
| | - Tomislav Rovis
- Department of Chemistry, Colorado State University, Ft. Collins, CO 80523
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18
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Ding XH, Cui WC, Li X, Ju X, Liu D, Wang S, Yao ZJ. Organocatalytic enantioselective conjugate addition of 2-nitrocyclohexanone to acrylaldehyde: a concise two-step synthesis of chiral building block 1-azaspiro[4.5]decan-6-one. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.01.114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Kueh JTB, Choi KW, Williams GM, Moehle K, Bacsa B, Robinson JA, Brimble MA. Synthesis of a 6,6-Spiroketal Amino Acid and Its Incorporation into a Peptide Turn Sequence Using Solid-Phase Peptide Synthesis. Chemistry 2013; 19:3807-11. [DOI: 10.1002/chem.201204546] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Indexed: 11/10/2022]
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20
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Perry MA, Morin MD, Slafer BW, Rychnovsky SD. Total synthesis of lepadiformine alkaloids using N-Boc α-amino nitriles as trianion synthons. J Org Chem 2012; 77:3390-400. [PMID: 22413935 DOI: 10.1021/jo300161x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lepadiformine A, B, and C were synthesized in an enantiomerically pure form using a reductive cyclization strategy. N-Boc α-amino nitriles were deprotonated and alkylated with enantiomerically pure dibromides to afford the first ring. The products were manipulated to introduce phosphate leaving groups, and subsequent reductive lithiation followed by intramolecular alkylation formed the second ring with high stereoselectivity. The third ring was formed by intramolecular displacement of a mesylate by the deprotected amine. Lepadiformine A and B contain a hydroxymethyl group adjacent to the amine. This appendage was introduced in a sequence using a Polonovski-Potier reaction as the key step. The synthetic strategy is stereoselective and convergent and demonstrates the utility of N-Boc α-amino nitriles as linchpins for alkaloid synthesis.
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Affiliation(s)
- Matthew A Perry
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, Irvine, California 92697, USA
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21
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Chen J, Wang A, Huo H, Huang P. Progress on the total synthesis of natural products in China: From 2006 to 2010. Sci China Chem 2012. [DOI: 10.1007/s11426-012-4534-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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Affiliation(s)
- Guillaume Lapointe
- University of Bern, Department of Chemistry and Biochemistry, Freiestrasse 3, CH-3012 Bern, Switzerland, and École Polytechnique Fédérale de Lausanne, Laboratoire de Cristallographie, Le Cubotron - Dorigny, CH-1015 Lausanne, Switzerland
| | - Kurt Schenk
- University of Bern, Department of Chemistry and Biochemistry, Freiestrasse 3, CH-3012 Bern, Switzerland, and École Polytechnique Fédérale de Lausanne, Laboratoire de Cristallographie, Le Cubotron - Dorigny, CH-1015 Lausanne, Switzerland
| | - Philippe Renaud
- University of Bern, Department of Chemistry and Biochemistry, Freiestrasse 3, CH-3012 Bern, Switzerland, and École Polytechnique Fédérale de Lausanne, Laboratoire de Cristallographie, Le Cubotron - Dorigny, CH-1015 Lausanne, Switzerland
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23
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Liang H, Ciufolini MA. Oxidative spirocyclization of phenolic sulfonamides: scope and applications. Chemistry 2011; 16:13262-70. [PMID: 20931573 DOI: 10.1002/chem.201001402] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A full account of the oxidative dearomatization of para- and ortho-phenolic sulfonamides is provided together with an overview of the chemistry of the products and their elaboration to building blocks for spirocyclic alkaloids. A concise total synthesis of putative lepadiformine complements the discussion.
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Affiliation(s)
- Huan Liang
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
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