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Carroll AR, Copp BR, Grkovic T, Keyzers RA, Prinsep MR. Marine natural products. Nat Prod Rep 2025; 42:257-297. [PMID: 39911015 DOI: 10.1039/d4np00067f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2025]
Abstract
Covering: January to the end of December 2023This review covers the literature published in 2023 for marine natural products (MNPs), with 582 citations (541 for the period January to December 2023) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, the submerged parts of mangroves and other intertidal plants. The emphasis is on new compounds (1220 in 340 papers for 2023), together with the relevant biological activities, source organisms and country of origin. Pertinent reviews, biosynthetic studies, first syntheses, and syntheses that led to the revision of structures or stereochemistries, have been included. An analysis of the progress in the study of prokaryote involvement in macro-invertebrate MNP production is discussed.
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Affiliation(s)
- Anthony R Carroll
- School of Environment and Science, Griffith University, Gold Coast, Australia.
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia
| | - Brent R Copp
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Tanja Grkovic
- Natural Products Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Robert A Keyzers
- Centre for Biodiscovery, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand
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Wu J, Verboom KL, Krische MJ. Catalytic Enantioselective C-C Coupling of Alcohols for Polyketide Total Synthesis beyond Chiral Auxiliaries and Premetalated Reagents. Chem Rev 2024; 124:13715-13735. [PMID: 39642170 PMCID: PMC11826517 DOI: 10.1021/acs.chemrev.4c00858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2024]
Abstract
Catalytic enantioselective hydrogen autotransfer reactions for the direct conversion of lower alcohols to higher alcohols are catalogued and their application to the total synthesis of polyketide natural products is described. These methods exploit a redox process in which alcohol oxidation is balanced by reductive generation of organometallic nucleophiles from unsaturated hydrocarbon pronucleophiles. Unlike classical carbonyl additions, premetalated reagents, chiral auxiliaries and discrete alcohol-to-aldehyde redox reactions are not required. Additionally, chemoselective dehydrogenation of primary alcohols in the presence of secondary alcohols enables C-C coupling in the absence of protecting groups.
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Affiliation(s)
- Jessica Wu
- University of Texas at Austin, Department of Chemistry, 105 E 24th St., Welch Hall (A5300), Austin, Texas 78712, United States
| | - Katherine L Verboom
- University of Texas at Austin, Department of Chemistry, 105 E 24th St., Welch Hall (A5300), Austin, Texas 78712, United States
| | - Michael J Krische
- University of Texas at Austin, Department of Chemistry, 105 E 24th St., Welch Hall (A5300), Austin, Texas 78712, United States
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Munir R, Zahoor AF, Anjum MN, Mansha A, Irfan A, Chaudhry AR, Irfan A, Kotwica-Mojzych K, Glowacka M, Mojzych M. Yamaguchi esterification: a key step toward the synthesis of natural products and their analogs-a review. Front Chem 2024; 12:1477764. [PMID: 39464384 PMCID: PMC11503016 DOI: 10.3389/fchem.2024.1477764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2024] [Accepted: 09/09/2024] [Indexed: 10/29/2024] Open
Abstract
The Yamaguchi reagent, based on 2,4,6-trichlorobenzoyl chloride (TCBC) and 4-dimethylaminopyridine (DMAP), is an efficient tool for conducting the intermolecular (esterification) reaction between an acid and an alcohol in the presence of a suitable base (Et3N or i Pr2NEt) and solvent (THF, DCM, or toluene). The Yamaguchi protocol is renowned for its ability to efficiently produce a diverse array of functionalized esters, promoting high yields, regioselectivity, and easy handling under mild conditions with short reaction times. Here, the recent utilization of the Yamaguchi reagent was reviewed in the synthesis of various natural products such as macrolides, terpenoids, polyketides, peptides, and metabolites.
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Affiliation(s)
- Ramsha Munir
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Ameer Fawad Zahoor
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Naveed Anjum
- Department of Applied Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Asim Mansha
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Ali Irfan
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | | | - Ahmad Irfan
- Department of Chemistry, College of Science, King Khalid University, Abha, Saudi Arabia
| | - Katarzyna Kotwica-Mojzych
- Department of Basic Sciences, Department of Histology, Embriology and Cytophysiology, Medical University of Lublin, Lublin, Poland
| | - Mariola Glowacka
- Faculty of Health Sciences Collegium Medicum, The Mazovian Academy in Plock, Płock, Poland
| | - Mariusz Mojzych
- Faculty of Health Sciences Collegium Medicum, The Mazovian Academy in Plock, Płock, Poland
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Yao YF, Song JW, Zhang CP. Base-mediated synthesis of aryl enol ethers from α-aryl allylic alcohols and arylsulfonium salts. Org Biomol Chem 2024; 22:7866-7873. [PMID: 39234762 DOI: 10.1039/d4ob01220h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2024]
Abstract
A concise synthesis of aryl enol ethers from allylic alcohols and arylsulfonium salts by simply using an inorganic base as a mediator is described. The reaction enabled the facile conversion of various α-aryl allylic alcohols into the corresponding aryl enol ethers in good yields with excellent selectivity. The results demonstrated that both symmetric triarylsulfonium triflate and 10-methyl-5-aryl-5,10-dihydrophenothiazin-5-ium salts were effective arylation reagents for the base-initiated selective O-arylation and isomerization of α-aryl allylic alcohols. This reaction represents the first use of arylsulfonium salts as arylation reagents to access aryl enol ethers directly from allylic alcohols.
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Affiliation(s)
- Yu-Fei Yao
- School of Chemistry, Chemical Engineering and Life Science, Hubei Key Laboratory of Nanomedicine for Neurodegenerative Diseases, Wuhan University of Technology, Wuhan 430070, China.
| | - Jia-Wei Song
- School of Chemistry, Chemical Engineering and Life Science, Hubei Key Laboratory of Nanomedicine for Neurodegenerative Diseases, Wuhan University of Technology, Wuhan 430070, China.
| | - Cheng-Pan Zhang
- School of Chemistry, Chemical Engineering and Life Science, Hubei Key Laboratory of Nanomedicine for Neurodegenerative Diseases, Wuhan University of Technology, Wuhan 430070, China.
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Wu J, Krische MJ. β-Hydroxy Esters as Malonic Semialdehyde Proelectrophiles in Enantioselective Butadiene-Mediated Crotylation: Total Synthesis of Octalactins A and B. Org Lett 2024; 26:4830-4834. [PMID: 38804715 PMCID: PMC11444018 DOI: 10.1021/acs.orglett.4c01644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Tractable and commercially available esters (and amides) of β-hydroxypropionic acid serve as malonic semialdehyde proelectrophiles in enantioselective ruthenium-catalyzed hydrogen autotransfer crotylations mediated by butadiene. Through iterative asymmetric butadiene-mediated crotylations of ethyl 3-hydroxypropanoate, total syntheses of the polyketide natural products octalactin A and B were achieved in fewer steps than previously possible.
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Affiliation(s)
- Jessica Wu
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Michael J Krische
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
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Shezaf JZ, Santana CG, Ortiz E, Meyer CC, Liu P, Sakata K, Huang KW, Krische MJ. Leveraging the Stereochemical Complexity of Octahedral Diastereomeric-at-Metal Catalysts to Unlock Regio-, Diastereo-, and Enantioselectivity in Alcohol-Mediated C-C Couplings via Hydrogen Transfer. J Am Chem Soc 2024; 146:7905-7914. [PMID: 38478891 PMCID: PMC11446212 DOI: 10.1021/jacs.4c01857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Experimental and computational studies illuminating the factors that guide metal-centered stereogenicity and, therefrom, selectivity in transfer hydrogenative carbonyl additions of alcohol proelectrophiles catalyzed by chiral-at-metal-and-ligand octahedral d6 metal ions, iridium(III) and ruthenium(II), are described. To augment or invert regio-, diastereo-, and enantioselectivity, predominantly one from among as many as 15 diastereomeric-at-metal complexes is required. For iridium(III) catalysts, cyclometalation assists in defining the metal stereocenter, and for ruthenium(II) catalysts, iodide counterions play a key role. Whereas classical strategies to promote selectivity in metal catalysis aim for high-symmetry transition states, well-defined low-symmetry transition states can unlock selectivities that are otherwise difficult to achieve or inaccessible.
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Affiliation(s)
- Jonathan Z. Shezaf
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
- Faculty of Pharmaceutical Sciences, Toho University, Funabashi, Chiba 274-8510, Japan
| | - Catherine G. Santana
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
- Faculty of Pharmaceutical Sciences, Toho University, Funabashi, Chiba 274-8510, Japan
| | - Eliezer Ortiz
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Cole. C. Meyer
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Ken Sakata
- Faculty of Pharmaceutical Sciences, Toho University, Funabashi, Chiba 274-8510, Japan
| | - Kuo-Wei Huang
- KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology(KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Michael J. Krische
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
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Lee DS, Maejima S, Krische MJ. Synthesis of the C28-C41 Side Chain of (Proposed) Neaumycin B: A Contiguous Stereohextet. Org Lett 2023; 25:6763-6766. [PMID: 37671869 PMCID: PMC10614081 DOI: 10.1021/acs.orglett.3c02699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
The C28-C41 side-chain of the proposed structure of neaumycin B, which encompasses a contiguous stereohextet, is prepared in 8 steps (longest linear sequence). Convergency is maximized via Williams' Felkin-Anh-selective triorganozincate-mediated vinylation of an α,β-stereogenic aldehyde. The relative stereochemical assignment of the C33-C35 stereotriad was accomplished via the 13C NMR analysis of the related acetonide. Relative stereochemistry of C33 carbinol and C36-C37 glycidol was determined by comparative NOE analysis of the related diastereomeric furans.
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Affiliation(s)
- Da Seul Lee
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, United States
- Chung-Ang University, Department of Chemistry, Seoul 06974, South Korea
| | - Saki Maejima
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, United States
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, United States
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Verboom KL, Meyer CC, Evarts MM, Jung WO, Krische MJ. O-Acetyl 1,3-Propanediol as an Acrolein Proelectrophile in Enantioselective Iridium-Catalyzed Carbonyl Allylation. Org Lett 2023; 25:3659-3663. [PMID: 37172193 PMCID: PMC10425987 DOI: 10.1021/acs.orglett.3c01022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
O-Acetyl 1,3-propanediol serves as an acrolein proelectrophile in π-allyliridium-C,O-benzoate-catalyzed carbonyl allylations mediated by racemic α-substituted allylic acetates. Using the iridium catalyst modified by (R)-SEGPHOS, a variety of 3-hydroxy-1,5-hexadienes are formed with uniformly high levels of regio-, anti-diastereo-, and enantioselectivity.
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Affiliation(s)
| | | | | | | | - Michael J Krische
- University of Texas at Austin, Department of Chemistry, Austin, Texas 78712, United States
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