1
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Kumar P, Kaur N, Kumar R, Banerjee P. α ,β-Unsaturated Carbonyls for One-Pot Transition-Metal-Free Access to 3,6-Dihydro-2 H-pyrans. J Org Chem 2022; 87:7167-7178. [PMID: 35579030 DOI: 10.1021/acs.joc.2c00379] [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 efficient protocol has been developed for accessing mono-, di-, and trisubstituted 3,6-dihydro-2H-pyran derivatives by simply subjecting α,β-unsaturated carbonyls to the carefully optimized Corey-Chaykovsky reaction conditions. The strategy provides selectively substituted dihydropyran derivatives in good to excellent yields with a broad substrate scope under very mild reaction conditions. Easy transformation of the final 3,6-dihydro-2H-pyran to the valued 5,6-dihydro-2H-pyran-2-one and tetrahydro-2H-pyran derivatives expanded the scope of this methodology to diverse oxacycles. Further, the developed strategy also found application in a two-step route to racemic goniothalamin, which is widely studied for its cytotoxic behavior.
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Affiliation(s)
- Pankaj Kumar
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Navpreet Kaur
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Rakesh Kumar
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
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2
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Natural Products from Tongan Marine Organisms. Molecules 2021; 26:molecules26154534. [PMID: 34361690 PMCID: PMC8347048 DOI: 10.3390/molecules26154534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/15/2021] [Accepted: 07/22/2021] [Indexed: 12/29/2022] Open
Abstract
The islands of the South Pacific Ocean have been in the limelight for natural product biodiscovery, due to their unique and pristine tropical waters and environment. The Kingdom of Tonga is an archipelago in the central Indo-Pacific Ocean, consisting of 176 islands, 36 of which are inhabited, flourishing with a rich diversity of flora and fauna. Many unique natural products with interesting bioactivities have been reported from Indo-Pacific marine sponges and other invertebrate phyla; however, there have not been any reviews published to date specifically regarding natural products from Tongan marine organisms. This review covers both known and new/novel Marine Natural Products (MNPs) and their biological activities reported from organisms collected within Tongan territorial waters up to December 2020, and includes 109 MNPs in total, the majority from the phylum Porifera. The significant biological activity of these metabolites was dominated by cytotoxicity and, by reviewing these natural products, it is apparent that the bulk of the new and interesting biologically active compounds were from organisms collected from one particular island, emphasizing the geographic variability in the chemistry between these organisms collected at different locations.
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3
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Mata G, Kalnmals CA. Total Synthesis in the Trost Laboratories: Selected Milestones From the Past Twenty Years. Isr J Chem 2021. [DOI: 10.1002/ijch.202100022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Guillaume Mata
- Arcus Biosciences, Inc. 3928 Point Eden Way Hayward CA 94545 USA
| | - Christopher A. Kalnmals
- Crop Protection Discovery Corteva Agriscience 9330 Zionsville Road Indianapolis IN 46268 USA
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4
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Avila C, Angulo-Preckler C. Bioactive Compounds from Marine Heterobranchs. Mar Drugs 2020; 18:657. [PMID: 33371188 PMCID: PMC7767343 DOI: 10.3390/md18120657] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/05/2020] [Accepted: 12/07/2020] [Indexed: 12/22/2022] Open
Abstract
The natural products of heterobranch molluscs display a huge variability both in structure and in their bioactivity. Despite the considerable lack of information, it can be observed from the recent literature that this group of animals possesses an astonishing arsenal of molecules from different origins that provide the molluscs with potent chemicals that are ecologically and pharmacologically relevant. In this review, we analyze the bioactivity of more than 450 compounds from ca. 400 species of heterobranch molluscs that are useful for the snails to protect themselves in different ways and/or that may be useful to us because of their pharmacological activities. Their ecological activities include predator avoidance, toxicity, antimicrobials, antifouling, trail-following and alarm pheromones, sunscreens and UV protection, tissue regeneration, and others. The most studied ecological activity is predation avoidance, followed by toxicity. Their pharmacological activities consist of cytotoxicity and antitumoral activity; antibiotic, antiparasitic, antiviral, and anti-inflammatory activity; and activity against neurodegenerative diseases and others. The most studied pharmacological activities are cytotoxicity and anticancer activities, followed by antibiotic activity. Overall, it can be observed that heterobranch molluscs are extremely interesting in regard to the study of marine natural products in terms of both chemical ecology and biotechnology studies, providing many leads for further detailed research in these fields in the near future.
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Affiliation(s)
- Conxita Avila
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Biodiversity Research Institute (IrBIO), Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Catalonia, Spain;
| | - Carlos Angulo-Preckler
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Biodiversity Research Institute (IrBIO), Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Catalonia, Spain;
- Norwegian College of Fishery Science, UiT The Arctic University of Norway, Hansine Hansens veg 18, 9019 Tromsø, Norway
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5
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McDonald TR, Mills LR, West MS, Rousseaux SAL. Selective Carbon–Carbon Bond Cleavage of Cyclopropanols. Chem Rev 2020; 121:3-79. [DOI: 10.1021/acs.chemrev.0c00346] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Tyler R. McDonald
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - L. Reginald Mills
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Michael S. West
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Sophie A. L. Rousseaux
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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6
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Gehlawat A, Prakash R, Kumar Pandey S. A Short and Efficient Enantioselective Synthesis of (+)‐(2
S
,3
S
,5
S
)‐
epi
‐Muscarine. ChemistrySelect 2020. [DOI: 10.1002/slct.202001598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anju Gehlawat
- School of Chemistry and BiochemistryThapar Institute of Engineering and Technology Patiala 147 001 India
| | - Ranjana Prakash
- School of Chemistry and BiochemistryThapar Institute of Engineering and Technology Patiala 147 001 India
| | - Satyendra Kumar Pandey
- School of Chemistry and BiochemistryThapar Institute of Engineering and Technology Patiala 147 001 India
- Department of Chemistry Institute of ScienceBanaras Hindu University Varanasi 221 005 India
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7
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Hanif N, Murni A, Tanaka C, Tanaka J. Marine Natural Products from Indonesian Waters. Mar Drugs 2019; 17:md17060364. [PMID: 31248122 PMCID: PMC6627775 DOI: 10.3390/md17060364] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 12/13/2022] Open
Abstract
Natural products are primal and have been a driver in the evolution of organic chemistry and ultimately in science. The chemical structures obtained from marine organisms are diverse, reflecting biodiversity of genes, species and ecosystems. Biodiversity is an extraordinary feature of life and provides benefits to humanity while promoting the importance of environment conservation. This review covers the literature on marine natural products (MNPs) discovered in Indonesian waters published from January 1970 to December 2017, and includes 732 original MNPs, 4 structures isolated for the first time but known to be synthetic entities, 34 structural revisions, 9 artifacts, and 4 proposed MNPs. Indonesian MNPs were found in 270 papers from 94 species, 106 genera, 64 families, 32 orders, 14 classes, 10 phyla, and 5 kingdoms. The emphasis is placed on the structures of organic molecules (original and revised), relevant biological activities, structure elucidation, chemical ecology aspects, biosynthesis, and bioorganic studies. Through the synthesis of past and future data, huge and partly undescribed biodiversity of marine tropical invertebrates and their importance for crucial societal benefits should greatly be appreciated.
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Affiliation(s)
- Novriyandi Hanif
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, IPB University (Bogor Agricultural University), Bogor 16680, Indonesia.
| | - Anggia Murni
- Tropical Biopharmaca Research Center, IPB University (Bogor Agricultural University), Bogor 16128, Indonesia.
| | - Chiaki Tanaka
- Department of Natural Products Chemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan.
| | - Junichi Tanaka
- Department of Chemistry, Biology, and Marine Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan.
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10
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Heinrich M, Murphy JJ, Ilg MK, Letort A, Flasz J, Philipps P, Fürstner A. Total Synthesis of Putative Chagosensine. Angew Chem Int Ed Engl 2018; 57:13575-13581. [PMID: 30152031 DOI: 10.1002/anie.201808937] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Indexed: 12/22/2022]
Abstract
The marine macrolide chagosensine is the only natural product known to date that embodies a Z,Z-configured chloro-1,3-diene unit. This distinguishing substructure was prepared by a sequence of palladium-catalyzed 1,2-distannation of an alkyne precursor, regioselective Stille cross-coupling at the terminus of the resulting bisstannyl alkene with an elaborated alkenyl iodide, followed by chloro-destannation of the remaining internal site. The preparation of the required substrates centered on cobalt-catalyzed oxidative cyclization reactions of hydroxylated olefin precursors, which allowed the 2,5-trans-disubstituted tetrahydrofuran rings, embedded into each building block, to be formed with excellent selectivity. The highly strained macrolactone could ultimately be closed under forcing Yamaguchi conditions. Comparison of the spectral data of the synthetic sample with those of authentic chagosensine methyl ester confirmed that the structure of this intriguing compound has been mis-assigned by the isolation team.
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Affiliation(s)
- Marc Heinrich
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - John J Murphy
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Marina K Ilg
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Aurélien Letort
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Jakub Flasz
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Petra Philipps
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
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11
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Abstract
Covering: up to the end of February 2017Nudibranchs have attracted the attention of natural product researchers due to the potential for discovery of bioactive metabolites, in conjunction with the interesting predator-prey chemical ecological interactions that are present. This review covers the literature published on natural products isolated from nudibranchs up to February 2017 with species arranged taxonomically. Selected examples of metabolites obtained from nudibranchs across the full range of taxa are discussed, including their origins (dietary or biosynthetic) if known and biological activity.
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Affiliation(s)
- Lewis J Dean
- School of Science, University of Waikato, Hamilton 3240, New Zealand.
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12
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Mineeva IV. Cyclopropanol intermediates in the synthesis of the C5–C14 fragment of laulimalides. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2016. [DOI: 10.1134/s1070428016030118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Mineeva IV. New approach to the synthesis of macrocyclic core of cytotoxic lactone (+)-neopeltolide. Synthesis of C7–C14 segment basing on cyclopropanol intermediates. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2015. [DOI: 10.1134/s1070428015080023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Gahalawat S, Garg Y, Pandey SK. Total Synthesis of (+)-Petromyroxol, a Marine Natural Product. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500301] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Suraksha Gahalawat
- School of Chemistry and Biochemistry; Thapar University; Patiala- 147001 India
| | - Yuvraj Garg
- School of Chemistry and Biochemistry; Thapar University; Patiala- 147001 India
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15
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Mineeva IV. Synthesis of ethyl (2E,5S)-7-{[tert-butyl(dimethyl)silyloxy]-methyl}-5-methylocta-2,7-dienoate, a universal C7–C14 building block for the preparation of amphidinolides B, D, G, H, and L. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2015. [DOI: 10.1134/s1070428015070052] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Hua YZ, Liu MM, Huang PJ, Song X, Wang MC, Chang JB. A New Strategy for Enantioselective Construction of Multisubstituted Five-Membered Oxygen Heterocycles via a Domino Michael/Hemiketalization Reaction. Chemistry 2015; 21:11994-8. [PMID: 26177976 DOI: 10.1002/chem.201501655] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Indexed: 01/05/2023]
Abstract
A new highly enantioselective domino Michael/hemiketalization reaction of α-hydroxyacetophenone with β,γ-unsaturated α-keto esters for the synthesis of 2,2,4,5-tetrasubstituted chiral tetrahydrofurans is reported. With 2 mol % intramolecular dinuclear zinc-AzePhenol complex prepared in situ from the reaction of multidentate semi-azacrown ether ligand with ZnEt2 , the corresponding anti-multisubstituted tetrahydrofuran products were obtained in up to 90 % yields, and 98 % enantiomeric excess (ee) at 0 °C for 45 min. Moreover, the products were easily converted to 2,3,5-trisubstituted 2,3-dihydrofurans without any loss in optical activity.
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Affiliation(s)
- Yuan-Zhao Hua
- College of Chemistry and Molecular Engineering, Zhengzhou University, 75, Daxue Street, Zhengzhou City, 450052 (China)
| | - Meng-Meng Liu
- College of Chemistry and Molecular Engineering, Zhengzhou University, 75, Daxue Street, Zhengzhou City, 450052 (China)
| | - Pei-Jin Huang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 75, Daxue Street, Zhengzhou City, 450052 (China)
| | - Xixi Song
- College of Chemistry and Molecular Engineering, Zhengzhou University, 75, Daxue Street, Zhengzhou City, 450052 (China)
| | - Min-Can Wang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 75, Daxue Street, Zhengzhou City, 450052 (China).
| | - Jun-Biao Chang
- College of Chemistry and Molecular Engineering, Zhengzhou University, 75, Daxue Street, Zhengzhou City, 450052 (China).
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17
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Abstract
Macrocycles possess desirable properties that make them promising candidates for the discovery of novel drugs. They present structural features to favor bioactive conformations, selectivity to the receptors, cell permeability and metabolic stability. More effective and nontoxic drugs to cure human African trypanosomiasis, Leishmaniasis and Chagas disease are needed, especially because resistance has been detected. Therefore, major efforts should be made for investigation in new bioactive compounds exhibiting different mechanisms of action. Macrocycles might fulfill the expectations for the development of new drugs to treat those diseases. In the current review, we focus on macrocycles exhibiting biological activities as antitrypanosomal and/or antileishmanial. The isolation, synthetic and biological studies of this class of compounds published from 2005 to 2014 are summarized.
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19
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Bayir A, Brewer M. Fragmentation of bicyclic γ-silyloxy-β-hydroxy-α-diazolactones as an approach to ynolides. J Org Chem 2014; 79:6037-46. [PMID: 24922068 PMCID: PMC4084849 DOI: 10.1021/jo500634d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Medium-sized ynolides
were prepared by the Lewis acid-mediated
fragmentation of bicyclic γ-silyloxy-β-hydroxy-α-diazolactones
in which the Cβ–Cγ bond is the ring fusion bond.
Although these lactone fragmentation substrates reacted somewhat less
efficiently than their carbocyclic counterparts, the fragmentation
provided 11-membered ynolides in up to 84% yield. Unlike prior fragmentations
of similar substrates, elevated temperatures were required to obtain
optimum yields of the ynolide products. The ynolides reported herein
have ring sizes of 10 or 11, which are the smallest reported to date.
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Affiliation(s)
- Ali Bayir
- Department of Chemistry, The University of Vermont , 82 University Place, Burlington, Vermont 05405, United States
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20
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Han WB, Li SG, Lu XW, Wu Y. Facile Conversion of Cyclopropanols into Linear Conjugate Enones. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402175] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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21
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Chatterjee B, Bera S, Mondal D. Julia–Kocienski olefination: a key reaction for the synthesis of macrolides. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2013.09.027] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Kumar VP, Kavitha N, Chandrasekhar S. Total Syntheses of Isomeric Spiroacetal Marine Natural Products Attenols A and B. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300703] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Haym I, Brimble MA. The Kulinkovich hydroxycyclopropanation reaction in natural product synthesis. Org Biomol Chem 2013; 10:7649-65. [PMID: 22886040 DOI: 10.1039/c2ob26082d] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Kulinkovich cyclopropanation reaction provides a flexible and convenient method for the synthesis of cyclopropanols. Together with the diverse chemistry of the cyclopropanol unit, it offers access to a wide range of functionalised unsaturated and saturated compounds. The successful use in the synthesis of natural compounds is outlined in this perspective.
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Affiliation(s)
- Isabell Haym
- University of Auckland, School of Chemical Sciences, 23 Symonds Street, Auckland 1043, New Zealand
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24
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Lorente A, Lamariano-Merketegi J, Albericio F, Álvarez M. Tetrahydrofuran-containing macrolides: a fascinating gift from the deep sea. Chem Rev 2013; 113:4567-610. [PMID: 23506053 DOI: 10.1021/cr3004778] [Citation(s) in RCA: 250] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Adriana Lorente
- Institute for Research in Biomedicine, Barcelona Science Park, University of Barcelona, Baldiri Reixac 10, 08028 Barcelona, Spain
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25
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Lee JS, Kim D, Kong SB, Han H. Air-Stable Bifunctional Allylation Reagents for the Asymmetric Synthesis of Differentiatedsyn- andanti-1,3-Diols. Chemistry 2013; 19:4135-9. [DOI: 10.1002/chem.201204148] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 01/04/2013] [Indexed: 11/07/2022]
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26
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Parenty A, Moreau X, Niel G, Campagne JM. Update 1 of: Macrolactonizations in the Total Synthesis of Natural Products. Chem Rev 2013; 113:PR1-40. [DOI: 10.1021/cr300129n] [Citation(s) in RCA: 148] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- A. Parenty
- Institut de Chimie des Substances
Naturelles, Avenue de la Terrasse, F-91198 Gif sur Yvette, France
| | - X. Moreau
- Institut de Chimie des Substances
Naturelles, Avenue de la Terrasse, F-91198 Gif sur Yvette, France
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-Saint-Quentin-en-Yvelines, 45 Avenue des Etats-Unis, 78035 Versailles Cedex, France
| | - Gilles Niel
- Institut Charles Gerhardt, UMR5253, Ecole Nationale Supérieure de Chimie, 8 rue de l’Ecole Normale, F-34296 Montpellier, France
| | - J.-M. Campagne
- Institut de Chimie des Substances
Naturelles, Avenue de la Terrasse, F-91198 Gif sur Yvette, France
- Institut Charles Gerhardt, UMR5253, Ecole Nationale Supérieure de Chimie, 8 rue de l’Ecole Normale, F-34296 Montpellier, France
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27
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Murthy AS, Mahipal B, Chandrasekhar S. Asymmetric Synthesis of the C14-C26 Building Block of Eribulin Mesylate. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201119] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Zhang FM, Peng L, Li H, Ma AJ, Peng JB, Guo JJ, Yang D, Hou SH, Tu YQ, Kitching W. Total Synthesis of the Nominal Didemnaketal A. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201203406] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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29
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Zhang FM, Peng L, Li H, Ma AJ, Peng JB, Guo JJ, Yang D, Hou SH, Tu YQ, Kitching W. Total Synthesis of the Nominal Didemnaketal A. Angew Chem Int Ed Engl 2012; 51:10846-50. [DOI: 10.1002/anie.201203406] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 08/28/2012] [Indexed: 02/01/2023]
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30
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Roy S, Spilling CD. An expeditious total synthesis of both diastereoisomeric lipid dihydroxytetrahydrofurans from Notheia anomala. Org Lett 2012; 14:2230-3. [PMID: 22506757 PMCID: PMC3345562 DOI: 10.1021/ol300597u] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Short, high yielding syntheses of both diastereomers of the naturally occurring oxylipids 1 and 2 using a combination of organocatalytic hydroxylation of an aldehyde, alkene cross metathesis, and palladium(0) catalyzed cyclization chemistry (six-step process) are reported. Furthermore, the influence of the catalyst on the cross metathesis reaction of the homoallylic 1,2-diol has been studied in detail.
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Affiliation(s)
- Sudeshna Roy
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, Missouri 63121
| | - Christopher D. Spilling
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, Missouri 63121
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31
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Fan W, Li W, Ma X, Tao X, Li X, Yao Y, Xie X, Zhang Z. Ru-Catalyzed Asymmetric Hydrogenation of γ-Heteroatom Substituted β-Keto Esters. J Org Chem 2011; 76:9444-51. [PMID: 21981465 DOI: 10.1021/jo201822k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Weizheng Fan
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Wanfang Li
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xin Ma
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaoming Tao
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaoming Li
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Ying Yao
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaomin Xie
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Zhaoguo Zhang
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
- Shanghai Institute of Organic Chemistry, 345 Lingling Road, Shanghai 200032,
China
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32
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Eagon S, DeLieto C, McDonald WJ, Haddenham D, Saavedra J, Kim J, Singaram B. Mild and expedient asymmetric reductions of α,β-unsaturated alkenyl and alkynyl ketones by TarB-NO2 and mechanistic investigations of ketone reduction. J Org Chem 2010; 75:7717-25. [PMID: 21033682 DOI: 10.1021/jo101530f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A facile and mild reduction procedure is reported for the preparation of chiral allylic and propargyl alcohols in high enantiomeric purity. Under optimized conditions, alkynyl and alkenyl ketones were reduced by TarB-NO2 and NaBH4 at 25 °C in 1 h to produce chiral propargyl and allylic alcohols with enantiomeric excesses and yields up to 99%. In the case of α,β-unsaturated alkenyl ketones, α-substituted cycloalkenones were reduced with up to 99% ee, while more substituted and acyclic derivatives exhibited lower induction. For α,β-ynones, it was found that highly branched aliphatic ynones were reduced with optimal induction up to 90% ee, while reduction of aromatic and linear aliphatic derivatives resulted in more modest enantioselectivity. Using the (L)-TarB-NO2 reagent derived from (L)-tartaric acid, we routinely obtained highly enantioenriched chiral allylic and propargyl alcohols with (R) configuration. Since previous models and a reduction of a saturated analogue predicted propargyl products of (S) configuration, a series of new mechanistic studies were conducted to determine the likely orientation of aromatic, alkenyl, and alkynyl ketones in the transition state.
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Affiliation(s)
- Scott Eagon
- Department of Chemistry and Biochemistry, University of California at Santa Cruz, Santa Cruz, California 94086, United States
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Mineyeva IV, Kulinkovich OG. Methyl 3-bromomethyl-3-butenoate as an isopentane building block for the stereoselective preparation of (S)-4-methyl-3,6-dihydro-2H-pyran-2-carbaldehyde and (+)-faranal. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.01.120] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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34
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Synthetic transformations mediated by the combination of titanium(IV) alkoxides and grignard reagents: selectivity issues and recent applications. Part 1: reactions of carbonyl derivatives and nitriles. Tetrahedron 2010. [DOI: 10.1016/j.tet.2009.10.050] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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35
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2008. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.07.018] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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36
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Gollner A, Altmann KH, Gertsch J, Mulzer J. Synthesis and biological evaluation of a des-dihydropyran laulimalide analog. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.07.122] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Kim J, Bruning J, Park KE, Lee DJ, Singaram B. Highly Enantioselective and Regioselective Carbonyl Reduction of Cyclic α,β-Unsaturated Ketones Using TarB-NO2 and Sodium Borohydride. Org Lett 2009; 11:4358-61. [DOI: 10.1021/ol901677b] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jinsoo Kim
- Department of Chemistry and Biochemistry, University of California Santa Cruz, 1156 High Street, Santa Cruz, California 95064
| | - John Bruning
- Department of Chemistry and Biochemistry, University of California Santa Cruz, 1156 High Street, Santa Cruz, California 95064
| | - Kevin E. Park
- Department of Chemistry and Biochemistry, University of California Santa Cruz, 1156 High Street, Santa Cruz, California 95064
| | - David J. Lee
- Department of Chemistry and Biochemistry, University of California Santa Cruz, 1156 High Street, Santa Cruz, California 95064
| | - Bakthan Singaram
- Department of Chemistry and Biochemistry, University of California Santa Cruz, 1156 High Street, Santa Cruz, California 95064
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38
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Gollner A, Altmann KH, Gertsch J, Mulzer J. The laulimalide family: total synthesis and biological evaluation of neolaulimalide, isolaulimalide, laulimalide and a nonnatural analogue. Chemistry 2009; 15:5979-97. [PMID: 19402092 DOI: 10.1002/chem.200802605] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We herein describe in full detail the first total synthesis of the antitumor agents neolaulimalide and isolaulimalide as well as a highly efficient route to laulimalide. A Kulinkovich reaction followed by a cyclopropyl-allyl rearrangement is used to install the exo-methylene group. The C(2)-C(16) aldehyde fragment is coupled with the C(17)-C(28) sulfone fragments by a highly (E)-selective Julia-Lythgoe-Kocienski olefination to deliver the key intermediates of all three syntheses. Various conditions for the Yamaguchi macrolactonization are applied to close the individual macrocycles. Finally a carefully elaborated endgame was developed to solve the problem of acyl migration in the case of neolaulimalide. All compounds were tested against several cell lines. The cytotoxicity of neolaulimalide could be confirmed for the first time since its original isolation and it could be shown that it induces tubulin polymerization as efficiently as laulimalide.
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Affiliation(s)
- Andreas Gollner
- University of Vienna, Institute of Organic Chemistry, Währingerstrasse 38, 1090 Vienna, Austria.
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