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Banwell MG, White LV, Ye SY. Formal Total Syntheses of (+)- and (-)-Aspidophytine from a Common, Homochiral Precursor. J Org Chem 2022; 87:14407-14421. [PMID: 36194193 DOI: 10.1021/acs.joc.2c01864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A formal total synthesis of (-)-aspidophytine (2), a key substructure associated with the heterodimeric indole alkaloid haplophytine (1) and itself a natural product, has been established by employing the homochiral and enzymatically derived cis-1,2-dihydrocatechol 8 as a starting material. Specifically, compound 8 has been converted into the pentacyclic product 26, an advanced intermediate associated with a previously reported synthesis of aspidophytine (2). Simple modifications to the reaction sequence have also allowed for the identification of a synthetic pathway leading from dihydrocatechol 8 to (+)-aspidophytine (ent-2).
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Affiliation(s)
- Martin G Banwell
- Guangdong Key Laboratory for Research and the Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.,Institute for Advanced and Applied Chemical Synthesis, Jinan University, Guangzhou, Guangdong 510632, China
| | - Lorenzo V White
- Institute for Advanced and Applied Chemical Synthesis, Jinan University, Guangzhou, Guangdong 510632, China
| | - Sebastian Young Ye
- Research School of Chemistry, The Australian National University Canberra, ACT 2601, Australia
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2
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Belen’kii LI, Gazieva GA, Evdokimenkova YB, Soboleva NO. The literature of heterocyclic chemistry, Part XX, 2020. ADVANCES IN HETEROCYCLIC CHEMISTRY 2022. [DOI: 10.1016/bs.aihch.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Sansano JM, de Gracia Retamosa M, Döndaş HA, Sobhani S, Nájera C, Yus MA. Photocatalytic Homocoupling Transformations. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1517-7329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractHomocoupling reactions promoted by photocatalysts are not very abundant in the literature. However, the products generated from such processes are very interesting. In this review, we highlight the most relevant reports concerning photocatalyzed dimerizations covering the literature until the middle of 2020. Reactions will be classified according to the type of starting material employed, with an emphasis being placed on the corresponding mechanism. 1 Introduction2 Arenes and Heteroarenes3 Alkenes4 Alkanes5 Alkynes6 Aldehydes, Ketones, Alcohols, Amines and Imines7 Carboxylic Acids8 Nitro Compounds9 Conclusions
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Affiliation(s)
- José M. Sansano
- Departamento de Química Orgánica e Instituto de Síntesis Orgánica, Universidad de Alicante
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
| | - María de Gracia Retamosa
- Departamento de Química Orgánica e Instituto de Síntesis Orgánica, Universidad de Alicante
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
| | - Haci Ali Döndaş
- Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Çukurova University
| | - Sara Sobhani
- Department of Chemistry, College of Sciences, University of Birjand
| | - Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
| | - Miguel A. Yus
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
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4
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Reimann CE, Ngamnithiporn A, Hayashida K, Saito D, Korch KM, Stoltz BM. The Enantioselective Synthesis of Eburnamonine, Eucophylline, and 16′‐
epi
‐Leucophyllidine. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106184] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Christopher E. Reimann
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
| | - Aurapat Ngamnithiporn
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
- Laboratory of Medicinal Chemistry Chulabhorn Research Institute 54 Kamphaeng Phet 6 Road Bangkok 10210 Thailand
| | - Kohei Hayashida
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
- Discovery Research Laboratories Nippon Chemiphar Co., Ltd. 1–22 Hikokawado Misato Saitama 341-005 Japan
| | - Daisuke Saito
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
- Discovery Research Laboratories Nippon Chemiphar Co., Ltd. 1–22 Hikokawado Misato Saitama 341-005 Japan
| | - Katerina M. Korch
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
| | - Brian M. Stoltz
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
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Reimann CE, Ngamnithiporn A, Hayashida K, Saito D, Korch KM, Stoltz BM. The Enantioselective Synthesis of Eburnamonine, Eucophylline, and 16'-epi-Leucophyllidine. Angew Chem Int Ed Engl 2021; 60:17957-17962. [PMID: 34036708 PMCID: PMC8338904 DOI: 10.1002/anie.202106184] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Indexed: 11/08/2022]
Abstract
A synthetic approach to the heterodimeric bisindole alkaloid leucophyllidine is disclosed herein. An enantioenriched lactam building block, synthesized through palladium-catalyzed asymmetric allylic alkylation, served as the precursor to both hemispheres. The eburnamonine-derived fragment was synthesized through a Bischler-Napieralski/hydrogenation approach, while the eucophylline-derived fragment was synthesized by Friedländer quinoline synthesis and two sequential C-H functionalization steps. A convergent Stille coupling and phenol-directed hydrogenation united the two monomeric fragments to afford 16'-epi-leucophyllidine in 21 steps from commercial material.
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Affiliation(s)
- Christopher E. Reimann
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. MC 101-20, Pasadena, CA 91125 (USA)
| | - Aurapat Ngamnithiporn
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. MC 101-20, Pasadena, CA 91125 (USA)
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6 Road, Bangkok, 10210, Thailand
| | - Kohei Hayashida
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. MC 101-20, Pasadena, CA 91125 (USA)
- Discovery Research Laboratories, Nippon Chemiphar Co., Ltd. 1-22 Hikokawado, Misato, Saitama 341-005, Japan
| | - Daisuke Saito
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. MC 101-20, Pasadena, CA 91125 (USA)
- Discovery Research Laboratories, Nippon Chemiphar Co., Ltd. 1-22 Hikokawado, Misato, Saitama 341-005, Japan
| | - Katerina M. Korch
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. MC 101-20, Pasadena, CA 91125 (USA)
| | - Brian M. Stoltz
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. MC 101-20, Pasadena, CA 91125 (USA)
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Sun J, Yang H, Tang W. Recent advances in total syntheses of complex dimeric natural products. Chem Soc Rev 2021; 50:2320-2336. [PMID: 33470268 DOI: 10.1039/d0cs00220h] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Dimeric natural products are a collection of molecules with diverse molecular architectures and significant bio-activities. In this tutorial review, total synthesis of complex dimeric natural products accomplished in recent years are summarized and various dimerization strategies are discussed. By highlighting the selected representative examples, this review aims to demonstrate the recent tactics of dimerization which is an important process integrated into the whole synthetic sequences of dimeric natural products, provide insights on structural and chemical properties of monomers and dimers of related natural products, and promote further technological advances in organic synthesis and biological studies of complex dimeric natural products.
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Affiliation(s)
- Jiawei Sun
- State Key Laboratory of Bio-Organic & Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
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Zhao L, Yan ZH, Tang S, Wei ZL, Liao WW. Brønsted Acid-Promoted Cyclodimerization of Indolyl Ketones: Construction of Indole Fused-Oxabicyclo[3.3.1]nonane and -Cyclooctatetraene Ring Systems. Org Lett 2021; 23:166-171. [PMID: 33306402 DOI: 10.1021/acs.orglett.0c03895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A Brønsted acid-promoted cyclodimerization of C(3)-, C(2)-, or N(1)-substituted indole ketone derivatives is described. A wide range of structurally diverse bisindole fused-9-oxabicyclo[3.3.1]nonane and bisindole fused-cyclooctatetraene (COT) derivatives can be prepared in good to high yields with high efficiency.
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Affiliation(s)
- Lang Zhao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Zhi-Hua Yan
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Shuai Tang
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Zhong-Lin Wei
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
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