1
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Rezgui SP, Farhi J, Yu H, Sercel ZP, Virgil SC, Stoltz BM. Divergent total syntheses of pyrroloiminoquinone alkaloids enabled by the development of a Larock/Buchwald-Hartwig annulation/cyclization. Chem Sci 2024; 15:12284-12290. [PMID: 39118607 PMCID: PMC11304541 DOI: 10.1039/d4sc02981j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Accepted: 06/20/2024] [Indexed: 08/10/2024] Open
Abstract
Pyrroloiminoquinone alkaloids are a large class of natural products that display a wide range of biological activities. Synthetic approaches to these natural products typically rely on a common late-stage C10-oxygenated pyrroloiminoquinone intermediate, but these strategies often lead to lengthy synthetic sequences that are not amenable to divergent syntheses. We devised an alternative approach aimed at the early introduction of the C10 nitrogen, which we hypothesized would enable late-stage diversification. This strategy hinged upon a Larock/Buchwald-Hartwig annulation/cyclization to quickly access the core of these alkaloids. We report the development of this cascade process, which was facilitated by a dual ligand system in addition to selective functionalization of the key intermediate, to provide efficient syntheses of makaluvamines A, C, and D and isobatzelline B, and the first total synthesis of makaluvamine N.
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Affiliation(s)
- Samir P Rezgui
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena CA 91125 USA
| | - Jonathan Farhi
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena CA 91125 USA
| | - Hao Yu
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena CA 91125 USA
| | - Zachary P Sercel
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena CA 91125 USA
| | - Scott C Virgil
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena CA 91125 USA
| | - Brian M Stoltz
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology Pasadena CA 91125 USA
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2
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An J, Jackson RK, Tuccinardi JP, Wood JL. Pyrroloiminoquinone Alkaloids: Total Synthesis of Makaluvamines A and K. Org Lett 2023; 25:1868-1871. [PMID: 36913953 PMCID: PMC10044305 DOI: 10.1021/acs.orglett.3c00350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
Abstract
Herein, an efficient, scalable, and concise approach to an advanced pyrroloiminoquinone synthetic intermediate (6b) by way of a Larock indole synthesis is reported. The synthetic utility of this intermediate is demonstrated by its ready conversion to makaluvamines A (1) and K (4).
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Affiliation(s)
- Jason An
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
| | - Richard K Jackson
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
| | - Joseph P Tuccinardi
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
| | - John L Wood
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
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3
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Wani IA, Sk S, Mal A, Sengupta A, Ghorai MK. Stereoselective Routes to Hexahydropyrroloindoles and Tetrahydropyrroloquinolines from Activated Aziridines and Electron Deficient 3 H-Indoles. Org Lett 2022; 24:7867-7872. [PMID: 36094406 DOI: 10.1021/acs.orglett.2c02354] [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
An unprecedented and novel synthetic route to hexahydropyrrolo[2,3-b]indoles bearing cis-contiguous stereocenters with excellent stereoselectivities (ee of >99%, dr of ≤99:1) has been disclosed that proceeds through the ring opening of activated aziridines with electron deficient 4-substituted indoles followed by a novel cyclization in a domino fashion, thereby obviating the use of 3-substituted indoles as the prerequisite nucleophile. Another efficient synthetic route to tetrahydropyrrolo[4,3,2-de]quinolines in excellent yields (≤93%) and excellent enantioselectivity (ee of >99%) has been established via ring opening of activated aziridines with 4-bromo-1-methyl-1H-indole at relatively higher temperatures followed by Cu(I)-catalyzed intramolecular C-N cyclization in the same pot. The stability and the formation of products at different temperatures are explained by computational studies.
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Affiliation(s)
- Imtiyaz Ahmad Wani
- Indian Institution of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Sahid Sk
- Indian Institution of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Abhijit Mal
- Indian Institution of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Arunava Sengupta
- Indian Institution of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Manas K Ghorai
- Indian Institution of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
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4
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Sakata J. [Synthetic Studies on Complex Natural Products Based on Development of a Novel Synthetic Method for Heteroaromatic Skeleton]. YAKUGAKU ZASSHI 2022; 142:91-100. [PMID: 35110456 DOI: 10.1248/yakushi.21-00199] [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] [Indexed: 01/06/2023]
Abstract
Among my recent work on the syntheses of complex natural products based on the development of a novel synthetic method for the heteroaromatic skeleton, this article primarily deals with the total syntheses of (+)-CC-1065, isobatzeline A/B, and batzeline A. These syntheses were accomplished via a novel indole synthesis utilizing a ring expansion reaction of benzocyclobutenone oxime sulfonate as the key step. The 1,2-dihydro-3H-pyrrolo[3,2-e]indole segments of (+)-CC-1065 were rapidly constructed via a two-directional double-ring expansion strategy. Highly substituted pyrrolidine-fused common 5-chloro-2-methylthioindoles of isobatzeline A/B and batzeline A were constructed using a ring expansion reaction of benzocyclobutenone oxime sulfonate with NaSMe and a benzyne-mediated cyclization/functionalization reaction.
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Affiliation(s)
- Juri Sakata
- Graduate School of Pharmaceutical Sciences, Tohoku University
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5
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Tokuyama H. Construction of N-Heterocycles Fused with a Highly Substituted Benzene Ring by a Benzyne-Mediated Cyclization/Functionalization Cascade Reaction and Its Application to the Total Synthesis of Marine Natural Products. Chem Pharm Bull (Tokyo) 2021; 69:707-716. [PMID: 34334514 DOI: 10.1248/cpb.c21-00389] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This account summarizes the development of a benzyne-mediated cyclization/functionalization protocol for the versatile construction of highly substituted benzene derivatives fused with an N-heterocyclic ring such as indolines, indoles, and related nitrogen-containing heterocycles. The protocol comprises sequential reactions initiated by generating a benzyne species and subsequent cyclization via addition of magnesium amide to the benzyne, followed by trapping of the resultant magnesium compound in situ with various electrophiles. The substituent scope was expanded by conducting a transmetalation on a copper species to introduce alkyl, aryl, and alkenyl substituents. The utility of the sequential reaction was demonstrated in the synthesis of a carbazole natural product (heptaphylline), pyrrolo[4,3,2-de]quinoline alkaloids (batzellines), and pyrrolo[2,3-c]carbazole alkaloids (dictyodendrines).
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6
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Yamamoto T, Saitoh T, Einaga Y, Nishiyama S. Anodic Oxidation of Phenols: A Key Step for the Synthesis of Natural Products. CHEM REC 2021; 21:2254-2268. [PMID: 33759336 DOI: 10.1002/tcr.202100032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/08/2021] [Accepted: 03/08/2021] [Indexed: 01/17/2023]
Abstract
Natural products have played a significant role not only in discovery of drugs but also in development of organic chemistry by providing the synthetic challenges. Inspired by biosynthesis where enzymes catalyze a multi-step reaction, we have investigated the natural product synthesis utilizing electrochemical reactions as the key step. Electrochemical organic synthesis, so-called electro-organic synthesis, enables to control the reactivity of substrates simply by tuning electrolysis conditions. In this Personal Account, we overview the recent progress of our research projects about natural product synthesis, in which anodic oxidation of phenol compounds affords the important frameworks such as diaryl ether, spirodienone, and spiroisoxazoline.
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Affiliation(s)
- Takashi Yamamoto
- Department of Chemistry, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan
| | - Tsuyoshi Saitoh
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8575, Japan
| | - Yasuaki Einaga
- Department of Chemistry, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan
| | - Shigeru Nishiyama
- Department of Chemistry, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan
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7
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Yamashita Y, Poignant L, Sakata J, Tokuyama H. Divergent Total Syntheses of Isobatzellines A/B and Batzelline A. Org Lett 2020; 22:6239-6243. [PMID: 32623895 DOI: 10.1021/acs.orglett.0c01894] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Divergent total syntheses of isobatzellines A/B and batzelline A were accomplished. A fully substituted common indole intermediate bearing C-2 methylthio and C-5 chloro groups was constructed via ring expansion of benzocyclobutenone oxime sulfonate with NaSMe and a benzyne-mediated cyclization/functionalization sequence as the key steps. The total synthesis of isobatzelline B was achieved via formation of the iminoquinone structure by the redox-neutral acid-promoted C-5 proto-dechlorination of the common indole intermediate. The total syntheses of isobatzelline A and batzelline A were completed in a divergent manner by oxidation of the common indole intermediate using MnO2 or Mn(OAc)3, respectively.
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Affiliation(s)
- Yumi Yamashita
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Louna Poignant
- 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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8
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Rayudu SV, Karmakar D, Kumar P. Water-acetic acid mediated an efficient one-pot eco-friendly synthesis of novel bis-isoxazolopyrroloquinoline derivatives. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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9
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Elsherbini M, Wirth T. Hypervalent Iodine Reagents by Anodic Oxidation: A Powerful Green Synthesis. Chemistry 2018; 24:13399-13407. [DOI: 10.1002/chem.201801232] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 04/09/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Mohamed Elsherbini
- School of Chemistry; Cardiff University; Park Place, Main Building Cardiff CF10 3AT UK
| | - Thomas Wirth
- School of Chemistry; Cardiff University; Park Place, Main Building Cardiff CF10 3AT UK
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10
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Affiliation(s)
- Pedro M. Garcia-Barrantes
- Departments of Chemistry
and Pharmacology, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - Craig W. Lindsley
- Departments of Chemistry
and Pharmacology, Vanderbilt University, Nashville, Tennessee 37232, United States
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11
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Yang C, Chen X, Tang T, He Z. Annulation Reaction of 3-Acylmethylidene Oxindoles with Huisgen Zwitterions and Its Applications in the Syntheses of Pyrrolo[4,3,2-de]quinolinones and Marine Alkaloids Ammosamides. Org Lett 2016; 18:1486-9. [DOI: 10.1021/acs.orglett.6b00456] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Changjiang Yang
- The State
Key Laboratory
of Elemento-Organic Chemistry and Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China
| | - Xiangyu Chen
- The State
Key Laboratory
of Elemento-Organic Chemistry and Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China
| | - Tong Tang
- The State
Key Laboratory
of Elemento-Organic Chemistry and Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China
| | - Zhengjie He
- The State
Key Laboratory
of Elemento-Organic Chemistry and Collaborative Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China
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12
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Milne BF, Norman P. Resonant-Convergent PCM Response Theory for the Calculation of Second Harmonic Generation in Makaluvamines A–V: Pyrroloiminoquinone Marine Natural Products from Poriferans of Genus Zyzzya. J Phys Chem A 2015; 119:5368-76. [DOI: 10.1021/jp5102362] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Bruce F. Milne
- Nano-Bio
Spectroscopy Group and ETSF Scientific Development Centre, Department
of Materials Physics, University of the Basque Country, CFM CSIC-UPV/EHU-MPC and DIPC, Avenida de Tolosa 72, E-20018 Donostia, Spain
- Centre
for Computational Physics, Department of Physics, University of Coimbra, Rua Larga, 3004-516 Coimbra, Portugal
| | - Patrick Norman
- Department
of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden
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13
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14
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LaBarbera DV, Skibo EB. The Synthesis of Vinylogous Amidine Heterocycles. J Org Chem 2013; 78:11887-95. [DOI: 10.1021/jo401927n] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel V. LaBarbera
- The
Skaggs School of Pharmacy and Pharmaceutical Sciences, Department
of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Edward B. Skibo
- Department
of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287, United States
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15
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Badenock JC, Jordan JA, Gribble GW. Synthetic approaches toward the marine alkaloid prenostodione. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.02.116] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Zou Y, Hamann MT. Atkamine: a new pyrroloiminoquinone scaffold from the cold water Aleutian Islands Latrunculia sponge. Org Lett 2013; 15:1516-9. [PMID: 23472820 PMCID: PMC4137554 DOI: 10.1021/ol400294v] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new pyrroloiminoquinone alkaloid, named atkamine, with an unusual scaffold was discovered from a cold, deep water Alaskan sponge Latrunculia sp. collected from the Aleutian Islands. Olefin metathesis was utilized to determine the location of the double bond in the hydrocarbon chain. The absolute configuration was determined by using computational approaches combing with the ECD (electronic circular dichroism) spectroscopy.
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Affiliation(s)
- Yike Zou
- Department of Pharmacognosy, Pharmacology, Chemistry and Biochemistry, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Mark T. Hamann
- Department of Pharmacognosy, Pharmacology, Chemistry and Biochemistry, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
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17
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KAJIYAMA D, SAITOH T, NISHIYAMA S. Application of Electrochemically Generated Hypervalent Iodine Oxidant to Natural Products Synthesis. ELECTROCHEMISTRY 2013. [DOI: 10.5796/electrochemistry.81.319] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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18
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Oshiyama T, Satoh T, Okano K, Tokuyama H. Total synthesis of makaluvamine A/D, damirone B, batzelline C, makaluvone, and isobatzelline C featuring one-pot benzyne-mediated cyclization–functionalization. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Abstract
Recent reports on the synthetic studies of marine pyrroloiminoquinone alakloids and their analogs are reviewed.
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Affiliation(s)
- Yasuyuki Kita
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan.
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20
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Hu JF, Fan H, Xiong J, Wu SB. Discorhabdins and Pyrroloiminoquinone-Related Alkaloids. Chem Rev 2011; 111:5465-91. [DOI: 10.1021/cr100435g] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jin-Feng Hu
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, No. 826 Zhangheng Road, Shanghai 201203, China
| | - Hui Fan
- Department of Natural Products for Chemical Genetic Research, Key Laboratory of Brain Functional Genomics, Ministry of Education, East China Normal University, No. 3663 Zhongshan Road N, Shanghai 200062, China
| | - Juan Xiong
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, No. 826 Zhangheng Road, Shanghai 201203, China
| | - Shi-Biao Wu
- Department of Natural Products for Chemical Genetic Research, Key Laboratory of Brain Functional Genomics, Ministry of Education, East China Normal University, No. 3663 Zhongshan Road N, Shanghai 200062, China
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21
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Wada Y, Harayama Y, Kamimura D, Yoshida M, Shibata T, Fujiwara K, Morimoto K, Fujioka H, Kita Y. The synthetic and biological studies of discorhabdins and related compounds. Org Biomol Chem 2011; 9:4959-76. [DOI: 10.1039/c1ob05058c] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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22
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Wada Y, Fujioka H, Kita Y. Synthesis of the marine pyrroloiminoquinone alkaloids, discorhabdins. Mar Drugs 2010; 8:1394-416. [PMID: 20479983 PMCID: PMC2866491 DOI: 10.3390/md8041394] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Revised: 04/16/2010] [Accepted: 04/19/2010] [Indexed: 11/16/2022] Open
Abstract
Many natural products with biologically interesting structures have been isolated from marine animals and plants such as sponges, corals, worms, etc. Some of them are discorhabdin alkaloids. The discorhabdin alkaloids (discorhabdin A-X), isolated from marine sponges, have a unique structure with azacarbocyclic spirocyclohexanone and pyrroloiminoquinone units. Due to their prominent potent antitumor activity, discorhabdins have attracted considerable attention. Many studies have been reported toward the synthesis of discorhabdins. We have accomplished the first total synthesis of discorhabdin A (1), having the strongest activity in vitro among discorhabdins in 2003. In 2009, we have also accomplished the first total synthesis of prianosin B (2), having the 16,17-dehydropyrroloiminoquinone moiety, by a novel dehydrogenation reaction with a catalytic amount of NaN(3). These synthetic studies, as well as syntheses of the discorhabdins by various chemists to-date, are reviewed here.
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Affiliation(s)
- Yasufumi Wada
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Hiromichi Fujioka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
- * Authors to whom correspondence should be addressed; E-Mails:
(H.F.);
(Y.K.); Tel.: +81 6 6879 8225; Fax: +81 6 6879 8229
| | - Yasuyuki Kita
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
- * Authors to whom correspondence should be addressed; E-Mails:
(H.F.);
(Y.K.); Tel.: +81 6 6879 8225; Fax: +81 6 6879 8229
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23
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Inoue K, Ishikawa Y, Nishiyama S. Synthesis of Tetrahydropyrroloiminoquinone Alkaloids Based on Electrochemically Generated Hypervalent Iodine Oxidative Cyclization. Org Lett 2009; 12:436-9. [DOI: 10.1021/ol902566p] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keisuke Inoue
- Department of Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi 3-14-1, Kohoku-ku, Yokohama 223-8522, Japan
| | - Yuichi Ishikawa
- Department of Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi 3-14-1, Kohoku-ku, Yokohama 223-8522, Japan
| | - Shigeru Nishiyama
- Department of Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi 3-14-1, Kohoku-ku, Yokohama 223-8522, Japan
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24
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Wada Y, Otani K, Endo N, Harayama Y, Kamimura D, Yoshida M, Fujioka H, Kita Y. The first total synthesis of prianosin B. Tetrahedron 2009. [DOI: 10.1016/j.tet.2008.11.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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Passarella D, Belinghieri F, Scarpellini M, Pratesi G, Zunino F, Gia OM, Via LD, Santoro G, Danieli B. Synthesis and biological evaluation of pyrroloiminoquinone derivatives. Bioorg Med Chem 2008; 16:2431-8. [DOI: 10.1016/j.bmc.2007.11.063] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2007] [Revised: 11/14/2007] [Accepted: 11/21/2007] [Indexed: 10/22/2022]
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26
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Antunes EM, Copp BR, Davies-Coleman MT, Samaai T. Pyrroloiminoquinone and related metabolites from marine sponges. Nat Prod Rep 2005; 22:62-72. [PMID: 15692617 DOI: 10.1039/b407299p] [Citation(s) in RCA: 145] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review presents the structure, biological activity, biosynthetic studies and, where applicable, references to syntheses of 81 marine alkaloids containing either tetra-, hexa- or octa-hydrogenated variants of pyrrolo[4,3,2-de]quinoline, pyrrolo[4,3,2-de]pyrrolo[2,3-h]quinoline and pyrido[2,3-h]pyrrolo[4,3,2-de]quinoline core skeletons. The literature describing the isolation of pyrroloiminoquinones, and related metabolites, from marine sponges is littered with taxonomic inconsistencies and recent efforts to clarify the taxonomy of the sponges that produce this group of metabolites are discussed.
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Affiliation(s)
- Edith M Antunes
- Department of Chemistry, Rhodes University, Grahamstown, South Africa.
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27
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Tohma H, Harayama Y, Hashizume M, Iwata M, Kiyono Y, Egi M, Kita Y. The First Total Synthesis of Discorhabdin A. J Am Chem Soc 2003; 125:11235-40. [PMID: 16220942 DOI: 10.1021/ja0365330] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first stereoselective total synthesis of a potent antitumor alkaloid, discorhabdin A (1), which is a unique sulfur-containing pyrroloiminoquinone alkaloid, is described. The key step in the stereocontrolled total synthesis of 1 involves both a diastereoselective oxidative spirocyclization using a hypervalent iodine(III) reagent and an efficient construction of the labile and highly strained N,S-acetal skeleton. These methodologies provide a breakthrough in the total syntheses of these promising new antitumor agents, discorhabdins and their analogues, which should serve as valuable probes for structure-activity studies.
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Affiliation(s)
- Hirofumi Tohma
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
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Hénichart JP, Chackal S, Dudouit F, Houssin R. On the Synthesis of Two Dimethoxy-1,3,4,5-tetrahydropyrrolo[4,3,2-de]quinoline Regioisomers. HETEROCYCLES 2003. [DOI: 10.3987/com-02-9662] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kita Y. [Development of novel synthetic organic reactions: synthesis of antitumor natural products and leading compounds for new pharmaceuticals]. YAKUGAKU ZASSHI 2002; 122:1011-35. [PMID: 12510383 DOI: 10.1248/yakushi.122.1011] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Biologically active natural products with unique, highly complex molecular skeletons have been used as leading compounds for raw materials of new drugs. Due to the limitations of natural supply, highly efficient, large-scale syntheses and molecular design have been sought in drug discovery. For this purpose, we have focused on a synthetic strategy effective in developing novel reactions and reagents and found several useful regio- and stereospecific reactions, contributing to the synthesis of otherwise unattainable target molecules. The application of these reactions for the total synthesis of three types of potent cytotoxic natural products for the first time is described in this paper. The basic concept is first described. Then the total synthesis of anthracyclines, fredericamycin A, and discorhabdins is reported. Novel reactions using hypervalent iodine reagents under environmentally benign conditions are also described. The future prospects for this method are discussed.
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Affiliation(s)
- Yasuyuki Kita
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
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Le Quesne PW, Dong Y, Blythe TA. Recent Research on Pyrrole Alkaloids. ALKALOIDS: CHEMICAL AND BIOLOGICAL PERSPECTIVES 1999. [DOI: 10.1016/s0735-8210(99)80026-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Kraus GA, Selvakumar N. Synthetic Routes to Pyrroloiminoquinone Alkaloids. A Direct Synthesis of Makaluvamine C. J Org Chem 1998. [DOI: 10.1021/jo981547n] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- George A. Kraus
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
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Iwao M, Motoi O, Fukuda T, Ishibashi F. New synthetic approach to pyrroloiminoquinone marine alkaloids. Total synthesis of makaluvamines A, D, I, and K. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(98)00543-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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R. Lewis J. Muscarine, imidazole, oxazole, thiazole and peptide alkaloids, and other miscellaneous alkaloids. Nat Prod Rep 1998. [DOI: 10.1039/a815371y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhao R, Lown JW. A Concise Synthesis of the Pyrroloquinoline Nucleus of the Makaluvamine Alkaloids. SYNTHETIC COMMUN 1997. [DOI: 10.1080/00397919708006817] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Roberts D, Joule JA, Bros MA, Alvarez M. Synthesis of Pyrrolo[4,3,2-de]quinolines from 6,7-Dimethoxy-4-methylquinoline. Formal Total Syntheses of Damirones A and B, Batzelline C, Isobatzelline C, Discorhabdin C, and Makaluvamines A-D. J Org Chem 1997; 62:568-577. [PMID: 11671451 DOI: 10.1021/jo961743z] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
2-Amino-4-nitrophenol and 2-methoxy-5-nitroaniline were converted into the 5-nitroquinolines 6b and 6d, respectively, and then the latter into nitro-acetal 6f. 6,7-Dimethoxy-4-methylquinoline (6g) was nitrated at C-5 and then the methyl substituent converted into aldehyde 6j and then protected giving acetal 6l. Various means, notably a large excess of NiCl(2)/NaBH(4), were used to reduce both nitro group and pyridine ring, forming 1,2,3,4-tetrahydroquinolines such as 7b, 7c, 7d, which under acidic conditions closed to give 1,3,4,5-tetrahydropyrrolo[4,3,2-de]quinolines 9a, 9d, 9c, respectively. In some cases it was unnecessary to protect the aldehyde function, for example quinolinium salt 12c gave 9j and nitro-aldehyde 6j gave 9e (after BOC protection) directly by reaction with NiCl(2)/NaBH(4). Substitution of the indole and aniline nitrogens in the 1,3,4,5-tetrahydropyrrolo[4,3,2-de]quinolines was based on a combination of protection, selective deprotection, and the exploitation of the greater acidity of the indole N-hydrogen. 8-Chlorination of 6h and then conversions, as above, gave chloro-diamine-acetal 7e which on acid treatment produced iminoquinone 11b; formylation of the nitrogens in 7e and then acidic treatment allowed formation of the chlorine-substituted 1,3,4,5-tetrahydropyrrolo[4,3,2-de]quinoline 9m which was then converted into 9p. De-O-methylation and then oxidation of 9b and 9c gave o-quinones 10b and 10a, respectively.
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Affiliation(s)
- David Roberts
- Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, 08028 Barcelona, Spain
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Synthesis and biological evaluation of hybrid molecules containing the pyrroloquinoline nucleus and DNA-minor groove binders. Bioorg Med Chem Lett 1996. [DOI: 10.1016/0960-894x(96)00395-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Roberts D, Alvarez M, Joule JA. Synthesis of 6-chloro-1,3,4,5-tetrahydro-7,8-dimethoxy-1-methylpyrrolo[4,3,2-de]quinoline from a quinoline; Formal total syntheses of batzelline C, isobatzelline C, discorhabdin C and makaluvamine D. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(96)00051-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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