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Albitz K, Csókás D, Dobi Z, Pápai I, Soós T. Late-Stage Formal Double C-H Oxidation of Prenylated Molecules to Alkylidene Oxetanes and Azetidines by Strain-Enabled Cross-Metathesis. Angew Chem Int Ed Engl 2023; 62:e202216879. [PMID: 36629402 DOI: 10.1002/anie.202216879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 01/12/2023]
Abstract
Prenylation is a ubiquitous late-stage modification in nature that often confers significantly improved bioactivity for secondary metabolites. While this lipophilic modification renders enhanced potency, the lipophilic tag(s) can diminish bioavailability and adversely alter drug transportation and metabolism. Thus, a functional-group-tolerant, mild, and selective late-stage C-H functionalization of prenyl tags would present a great potential in drug discovery programs but could also impact other fields, such as agrochemistry and chemical biology. Herein we report an exocyclic-strain-driven cross-metathesis reaction of prenyl tags, a formal double C-H oxidation protocol, that can be used for the selective late-stage derivatization of prenylated compounds and natural products. This methodology avoids the need for prefunctionalization of target molecules and affords ready access to an unprecedented library of oxo- and aza-prenylated complex molecules. Thus, in a broader context, this methodology extends late-stage functionalization beyond that available to nature.
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Affiliation(s)
- Krisztián Albitz
- Organocatalysis Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok körútja, 1117, Budapest, Hungary.,Hevesy György PhD School of Chemistry, Eötvös Loránd University, 1/A Pázmány Péter sétány, 1117, Budapest, Hungary
| | - Dániel Csókás
- Theoretical Chemistry Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok körútja, 1117, Budapest, Hungary
| | - Zoltán Dobi
- Organocatalysis Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok körútja, 1117, Budapest, Hungary
| | - Imre Pápai
- Theoretical Chemistry Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok körútja, 1117, Budapest, Hungary
| | - Tibor Soós
- Organocatalysis Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok körútja, 1117, Budapest, Hungary
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2
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Xin N, Lv Y, Lian Y, Lin Z, Huang XQ, Zhao CQ, Wang Y. Preparation of Vinylphosphonates from Ketones Promoted by Tf 2O. J Org Chem 2023. [PMID: 36802599 DOI: 10.1021/acs.joc.2c02563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
An efficient triflic anhydride promoted phosphorylation of ketone was disclosed, and vinylphosphorus compounds were prepared under solvent- and metal-free conditions. Both aryl and alkyl ketones could perform smoothly to give vinyl phosphonates in high to excellent yields. In addition, the reaction was easy to carry out and easy to scale up. Mechanistic studies suggested that this transformation might involve nucleophilic vinylic substitution or a nucleophilic addition-elimination mechanism.
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Affiliation(s)
- Nana Xin
- Shandong Key Laboratory of Chemical Energy Storage and New Battery Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Yongzheng Lv
- Shandong Key Laboratory of Chemical Energy Storage and New Battery Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Yongjian Lian
- Shandong Key Laboratory of Chemical Energy Storage and New Battery Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Zhu Lin
- Shandong Key Laboratory of Chemical Energy Storage and New Battery Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Xian-Qiang Huang
- Shandong Key Laboratory of Chemical Energy Storage and New Battery Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Chang-Qiu Zhao
- Shandong Key Laboratory of Chemical Energy Storage and New Battery Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Yanlan Wang
- Shandong Key Laboratory of Chemical Energy Storage and New Battery Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
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Unified divergent strategy towards the total synthesis of the three sub-classes of hasubanan alkaloids. Nat Commun 2021; 12:36. [PMID: 33397993 PMCID: PMC7782686 DOI: 10.1038/s41467-020-20274-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 11/16/2020] [Indexed: 12/29/2022] Open
Abstract
Elegant asymmetric synthesis of hasubanan alkaloids have been developed over the past decades. However, a divergent approach leading to all three sub-classes of this family of natural products remains unknown. We report herein the realization of such an endeavor by accomplishing enantioselective total syntheses of four representative members. The synthesis is characterized by catalytic enantioselective construction of the tricyclic compounds from which three different intramolecular C-N bond forming processes leading to three topologically different hasubanan alkaloids are developed. An aza-Michael addition is used for the construction of the aza-[4.4.3]-propellane structure of (-)-cepharamine, whereas an oxidation/double deprotection/intramolecular hemiaminal forming sequence is developed to forge the bridged 6/6/6/6 tetracycle of (-)-cepharatines A and C and a domino bromination/double deprotection/cyclization sequence allows the build-up of the 6/6/5/5 fused tetracyclic structure of (−)-sinoracutine. Several Hasubanan alkaloids have been synthesized in the past decades, however a divergent approach to access the 3 subclasses of such natural products has not been reported yet. Here, the authors show the enantioselective total syntheses of four representative members via a unified strategy leading to the three topologically different classes of alkaloids.
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Schneider M, Richter MJR, Carreira EM. Total Synthesis of (-)-Mitrephorone A Enabled by Stereoselective Nitrile Oxide Cycloaddition and Tetrasubstituted Olefin Synthesis. J Am Chem Soc 2020; 142:17802-17809. [PMID: 33021371 PMCID: PMC7564100 DOI: 10.1021/jacs.0c09520] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
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A highly enantioselective and
diastereoselective total
synthesis of the diterpenoid (−)-mitrephorone A is presented.
Key to the synthesis are stereocontrolled 1,4-semihydrogenation
of a 1,3-diene to a tetrasubstituted double bond, enzyme-catalyzed
malonate desymmetrization, and highly diastereoselective nitrile
oxide cycloaddition. The streamlined strategy is a considerable improvement
to those reported earlier in terms of diastereo- and enantioselectivity.
For the first time, the combination of modern Pd-cross-coupling with
Cr-catalyzed reduction allows for rapid access to tetrasubstituted
olefins with full stereocontrol.
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Affiliation(s)
| | | | - Erick M Carreira
- ETH Zürich, Vladimir-Prelog-Weg 3, HCI, 8093 Zürich, Switzerland
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5
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Kare N, Kundoor GR, Palakodety RK. Studies towards the stereoselective total synthesis of Gliomasolide A. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Sudhakar Reddy M, Manikanta G, Radha Krishna P. First stereoselective total synthesis of antibiotic macrolide Berkeleylactone F. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.01.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Jo D, Han S. Total syntheses of spirocyclic PKS-NRPS-based fungal metabolites. Chem Commun (Camb) 2018; 54:6750-6758. [PMID: 29873347 DOI: 10.1039/c8cc02315h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Since the first isolation of pseurotin A in 1976, over twenty five spirocyclic PKS-NRPS-based (polyketide synthase-nonribosomal peptide synthetase-based) fungal natural products have been discovered to date. The common 1-oxa-7-azaspiro[4.4]non-2-ene-4,6-dione core of this family of natural products has served as a platform for the development of novel chemistry and resulted in the development of numerous new reactivities and synthetic strategies. Herein, we delineate all reported syntheses of spirocyclic PKS-NRPS-based fungal metabolites including our own recent contributions on this subject. We showcase how a biosynthetic consideration could lead to concise synthetic routes to this family of natural products.
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Affiliation(s)
- Deokhee Jo
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea.
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Optimised total syntheses of the F-furan fatty acids F 5 and F 6 and some deuterated derivatives. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.05.061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abstract
A stereoselective total synthesis of ent-hyptenolide is reported.
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Affiliation(s)
- Gembali Manikanta
- Organic & Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | - Galla Raju
- Organic & Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | - Palakodety Radha Krishna
- Organic & Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
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Li LL, Ding JY, Gao LX, Han FS. The development of a complementary pathway for the synthesis of aliskiren. Org Biomol Chem 2015; 13:1133-40. [DOI: 10.1039/c4ob01963f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present an alternative pathway for the synthesis of aliskiren by applying the Evans chiral auxiliary-aided asymmetric allylation and the Julia–Kocienski olefination as the key transformations.
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Affiliation(s)
- Le-Le Li
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
- The University of Chinese Academy of Sciences
| | - Jin-Ying Ding
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Lian-Xun Gao
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Fu-She Han
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
- Key Lab of Synthetic Chemistry of Natural Substances
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12
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Gram-scale synthesis of anti-pancreatic flavonoids (±)-8-[1-(4′-hydroxy-3′-methoxyphenyl)prop-2-en-1-yl]-chrysin and -galangin. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Kinzurik MI, Hristov LV, Matsuda SPT, Ball ZT. Mixed Bioengineering–Chemical Synthesis Approach for the Efficient Preparation of Δ7-Dafachronic Acid. Org Lett 2014; 16:2188-91. [DOI: 10.1021/ol5006642] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matias I. Kinzurik
- Department of Chemistry and ‡Department of Biochemistry
and Cell Biology, Rice University, Houston, Texas 77005, United States
| | - Lachezar V. Hristov
- Department of Chemistry and ‡Department of Biochemistry
and Cell Biology, Rice University, Houston, Texas 77005, United States
| | - Seiichi P. T. Matsuda
- Department of Chemistry and ‡Department of Biochemistry
and Cell Biology, Rice University, Houston, Texas 77005, United States
| | - Zachary T. Ball
- Department of Chemistry and ‡Department of Biochemistry
and Cell Biology, Rice University, Houston, Texas 77005, United States
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14
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Radha Krishna P, Karunakar Reddy B. Total Synthesis of a Pyrrolidin-2-one with the Structure Proposed for the Alkaloid Rigidiusculamide A. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201200598] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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15
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Vincent G, Karila D, Khalil G, Sancibrao P, Gori D, Kouklovsky C. Stereodivergent Synthesis of Piperidine Alkaloids by Ring-Rearrangement Metathesis/Reductive Lactam Alkylation of Nitroso Diels-Alder Cycloadducts. Chemistry 2013; 19:9358-65. [DOI: 10.1002/chem.201300836] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Indexed: 11/11/2022]
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16
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Boufroura H, Mauduit M, Drège E, Joseph D. Step-economical access to valuable Weinreb amide 2,5-disubstituted pyrrolidines by a sequential one-pot two-directional cross-metathesis/cyclizing aza-Michael process. J Org Chem 2013; 78:2346-54. [PMID: 23394585 DOI: 10.1021/jo302435a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Double cross-metathesis of 1,5-hexadiene with a variety of electron-deficient alkenes including the reluctant Weinreb acrylamide has been successfully accomplished. It was found that the process is quite general, and microwave irradiation effectively accelerates cross-coupling metathesis. This promotes a very versatile and high yielding methodology for the synthesis of symmetric Michael acceptors, which can be transformed into 2,5-disubstituted pyrrolidines through a sequential one-pot two-directional cross-metathesis/ring-closing double aza-Michael process.
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Affiliation(s)
- Hamza Boufroura
- Univ. Paris-Sud, Equipe de Chimie des Substances Naturelles, UMR CNRS 8076 BioCIS, 5 rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry, France
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18
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Sabitha G, Yagundar Reddy A, Yadav J. First stereoselective total synthesis of seimatopolide A. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Radha Krishna P, Kumar PVA. A Convergent Synthesis of a Twelve-Membered Macrolide Natural Product, (6R,12S)-6-Hydroxy-12-methyl-1-oxacyclododecane-2,5-dione. Helv Chim Acta 2012. [DOI: 10.1002/hlca.201200064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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20
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Krishna PR, Reddy BK, Srinivas P. Total synthesis of 2-(2-hydroxyalkyl)-piperidine alkaloids (−)-halosaline and (−)-8-epi-halosaline via iterative asymmetric allylation/RCM strategy. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.11.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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3,4-Disubstituted oxazolidin-2-ones as constrained ceramide analogs with anticancer activities. Bioorg Med Chem 2011; 19:6174-81. [PMID: 21978949 DOI: 10.1016/j.bmc.2011.09.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 09/09/2011] [Accepted: 09/10/2011] [Indexed: 12/19/2022]
Abstract
Heterocyclic analogs of ceramide as 3-alkanoyl or benzoyl-4-(1-hydroxy-2-enyl)-oxazolidin-2-ones were designed by binding of primary alcohol and amide in sphinogosine backbone as a carbamate. They were synthesized by addition of acyl halide to the common ring 4-(1-t-butyldimethylsilyloxyhexadec-2-enyl)-oxazolidin-2-one which was elaborated from chiral aziridine-2-carboxylate including stereoselective reduction and ring opening reactions as key steps. Other analogs with different carbon frame at C4 position which is corresponding to the sphingoid backbone were prepared from 3-cyclopentanecarbonyl-4-(1-t-butyldimethylsilyloxybut-2-enyl)-oxazolidin-2-one and straight and cyclic alkenes by cross metathesis. All compounds were tested as antileukemic drugs against human leukemia HL-60 cells. Many of them including propionyl, cyclopentanoyl and p-nitrobenzoyl-4-(1-hydroxyhexadec-2-enyl)-oxazolidin-2-ones showed better antileukemic activities than natural C2-ceramide with good correlation between cell death and DNA fragmentation. There is a drastic change of the activities by the carbon chain lengths at C4 position. Cytotoxicity was induced by caspase activation without significant accumulation of endogenous ceramide concentration or any perturbation of ceramide metabolism.
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22
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Krishna PR, Alivelu M. Total Synthesis of Leiocarpin C and (+)-Goniodiol via an Olefin Cross-Metathesis Protocol. Helv Chim Acta 2011. [DOI: 10.1002/hlca.201000365] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
An efficient total synthesis of rhodexin A (1) is reported. An initial inverse-electron-demand Diels-Alder reaction of the acyldiene 6 with the silyl enol ether 7 gave the cycloadduct 8 with the required 4 contiguous stereocenters in a single step. This compound was then transformed into the tetracyclic enone 16, which was converted to rhodexin A (1).
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Affiliation(s)
- Michael E Jung
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States.
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Radha Krishna P, Reddy BK. Stereoselective total synthesis of alkaloid caulophyllumine B using iterative olefin cross-metathesis protocol. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.09.079] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Griffiths PC, Knight DW, Morgan IR, Ford A, Brown J, Davies B, Heenan RK, King SM, Dalgliesh RM, Tomkinson J, Prescott S, Schweins R, Paul A. Gelation or molecular recognition; is the bis-(α,β-dihydroxy ester)s motif an omnigelator? Beilstein J Org Chem 2010; 6:1079-88. [PMID: 21160568 PMCID: PMC3002023 DOI: 10.3762/bjoc.6.123] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2010] [Accepted: 11/02/2010] [Indexed: 11/23/2022] Open
Abstract
Understanding the gelation of liquids by low molecular weight solutes at low concentrations gives an insight into many molecular recognition phenomena and also offers a simple route to modifying the physical properties of the liquid. Bis-(α,β-dihydroxy ester)s are shown here to gel thermoreversibly a wide range of solvents, raising interesting questions as to the mechanism of gelation. At gelator concentrations of 5-50 mg ml⁻¹, gels were successfully formed in acetone, ethanol/water mixtures, toluene, cyclohexane and chloroform (the latter, albeit at a higher gelator concentration). A range of neutron techniques - in particular small-angle neutron scattering (SANS) - have been employed to probe the structure of a selection of these gels. The universality of gelation in a range of solvent types suggests the gelation mechanism is a feature of the bis-(α,β-dihydroxy ester) motif, with SANS demonstrating the presence of regular structures in the 30-40 Å range. A correlation between the apparent rodlike character of the structures formed and the polarity of the solvent is evident. Preliminary spin-echo neutron scattering studies (SESANS) indicated the absence of any larger scale structures. Inelastic neutron spectroscopy (INS) studies demonstrated that the solvent is largely unaffected by gelation, but does reveal insights into the thermal history of the samples. Further neutron studies of this kind (particularly SESANS and INS) are warranted, and it is hoped that this work will stimulate others to pursue this line of research.
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Affiliation(s)
- Peter C Griffiths
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - David W Knight
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Ian R Morgan
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Amy Ford
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - James Brown
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Ben Davies
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Richard K Heenan
- Rutherford Appleton Laboratory, Science and Technology Research Council, Didcot, Oxfordshire OX11 0QX U.K
| | - Stephen M King
- Rutherford Appleton Laboratory, Science and Technology Research Council, Didcot, Oxfordshire OX11 0QX U.K
| | - Robert M Dalgliesh
- Rutherford Appleton Laboratory, Science and Technology Research Council, Didcot, Oxfordshire OX11 0QX U.K
| | - John Tomkinson
- Rutherford Appleton Laboratory, Science and Technology Research Council, Didcot, Oxfordshire OX11 0QX U.K
| | - Stuart Prescott
- School of Chemistry, Bristol University, Cantock’s Close, Bristol BS8 1TS U.K
| | - Ralf Schweins
- Institut Laue Langevin, 6 rue Jules Horowitz, 38042 Grenoble, Cedex 9, France
| | - Alison Paul
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
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Kim H, Baker J, Park Y, Park HB, DeArmond P, Kim SH, Fitzgerald M, Lee DS, Hong J. Total Synthesis, Assignment of the Absolute Stereochemistry, and Structure-Activity Relationship Studies of Subglutinols A and B. Chem Asian J 2010; 5:1902-10. [DOI: 10.1002/asia.201000147] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Recent Progress on Enyne Metathesis: Its Application to Syntheses of Natural Products and Related Compounds. MATERIALS 2010. [PMCID: PMC5445882 DOI: 10.3390/ma3032087] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Olefin metathesis using ruthenium carbene complexes is a useful method in synthetic organic chemistry. Enyne metathesis is also catalyzed by these complexes and various carbo- and heterocycles could be synthesized from the corresponding enynes. Dienyne metathesis, cross enyne metathesis and ring-opening enyne metathesis have been further developed. Various complicated compounds, such as the natural products and the related biologically active substances, could be synthesized using these metatheses reactions. Skeletal reorganization using the transition metals and metallotropic rearrangement are also discussed.
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Olefin cross-metathesis based approach for the stereoselective total synthesis of (+)-cardiobutanolide. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.09.077] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Lee K, Kim H, Hong J. A Facile and Efficient Synthesis of 4-Hydroxy-2,6-cis-tetrahydropyrans via Tandem Cross-Metathesis/Thermal SN2′ Reaction: Protecting-Group-Free Synthesis of (±)-Diospongin A. Org Lett 2009; 11:5202-5. [DOI: 10.1021/ol902125d] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kiyoun Lee
- Department of Chemistry, Duke University, Durham, North Carolina 27708
| | - Hyoungsu Kim
- Department of Chemistry, Duke University, Durham, North Carolina 27708
| | - Jiyong Hong
- Department of Chemistry, Duke University, Durham, North Carolina 27708
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Chemical modification of pseurotin A: one-pot synthesis of synerazol and pseurotin E and determination of absolute stereochemistry of pseurotin E. J Antibiot (Tokyo) 2009; 61:692-5. [PMID: 19168986 DOI: 10.1038/ja.2008.99] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Two natural products, synerazol and pseurotin E, were synthesized from the natural product pseurotin A in 58% and 57% yields, respectively in one-pot procedures. This work also establishes the absolute stereochemistry of pseurotin E.
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Monsaert S, De Canck E, Drozdzak R, Van Der Voort P, Verpoort F, Martins JC, Hendrickx PMS. Indenylidene Complexes of Ruthenium Bearing NHC Ligands - Structure Elucidation and Performance as Catalysts for Olefin Metathesis. European J Org Chem 2009. [DOI: 10.1002/ejoc.200800973] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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32
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33
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Knight DW, Morgan IR. An optimised and recoverable tartrate surrogate for sharpless asymmetric epoxidations. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2008.10.069] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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34
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Pandey RK, Wang L, Wallock NJ, Lindeman S, Donaldson WA. Reactivity of (2-alkenyl-3-pentene-1,5-diyl)iron complexes: preparation of functionalized vinylcyclopropanes and cycloheptadienes. J Org Chem 2008; 73:7236-45. [PMID: 18712926 DOI: 10.1021/jo801446q] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactivity of (2-alkenyl-3-pentene-1,5-diyl)iron complexes toward olefin metathesis, cycloaddition, and mild oxidations (MnO 2 or mCPBA) was examined. Cycloaddition reactions were observed to occur with modest diastereoselectivity (33-63% de). Decomplexation of the (3-pentenediyl) ligand may be accomplished by oxidation with either CAN or alkaline hydrogen peroxide to afford vinylcyclopropanecarboxylates or divinylcyclopropanecarboxylates. Reduction of the latter, followed by Cope rearrangement generates cycloheptadienylmethanols. These studies demonstrate that (2-alkenyl-3-pentene-1,5-diyl)iron complexes can serve as organometallic scaffolds for the preparation of a wide variety of structural motifs containing up to 5 contiguous stereocenters.
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Affiliation(s)
- Rajesh K Pandey
- Department of Chemistry, Marquette University, P.O. Box 1881, Milwaukee, Wisconsin 53201-1881, USA
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35
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Ying Y, Liu Y, Byeon SR, Kim H, Luesch H, Hong J. Synthesis and activity of largazole analogues with linker and macrocycle modification. Org Lett 2008; 10:4021-4. [PMID: 18707106 DOI: 10.1021/ol801532s] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
To characterize largazole's structural requirements for histone deacetylase (HDAC) inhibitory and antiproliferative activities, a series of analogues with modifications to the side chain or 16-membered macrocycle were prepared and biologically evaluated. Structure-activity relationships suggested that the four-atom linker between the macrocycle and octanoyl group in the side chain and the (S)-configuration at the C17 position are critical to repression of HDAC activity. However, the valine residue in the macrocycle can be replaced with alanine without significant loss of activity.
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Affiliation(s)
- Yongcheng Ying
- Department of Chemistry, Duke University, Durham, North Carolina 27708, USA
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36
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37
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Ghidu VP, Wang J, Wu B, Liu Q, Jacobs A, Marnett LJ, Sulikowski GA. Synthesis and evaluation of the cytotoxicity of apoptolidinones A and D. J Org Chem 2008; 73:4949-55. [PMID: 18543990 PMCID: PMC2572754 DOI: 10.1021/jo800545r] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2008] [Indexed: 11/28/2022]
Abstract
Apoptolidins A-D are microbial secondary metabolites shown to be selectively cytotoxic against several cancer cell lines and noncytotoxic against normal cells. Total syntheses of apoptolidinones A and D are reported. The efficient synthetic strategy leading to the apoptolidinones features construction of the common 20-membered macrolactone by an intramolecular Suzuki reaction and stereocontrolled aldol reactions establishing the C19/C20 and C22/C23 stereocenters. In contrast to apoptolidin A, the aglycones apoptolidinone A and D were shown to be noncytotoxic when evaluated against human lung cancer cells (H292).
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Affiliation(s)
- Victor P Ghidu
- Department of Chemistry, Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235-1822, USA
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38
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Ying Y, Taori K, Kim H, Hong J, Luesch H. Total synthesis and molecular target of largazole, a histone deacetylase inhibitor. J Am Chem Soc 2008; 130:8455-9. [PMID: 18507379 DOI: 10.1021/ja8013727] [Citation(s) in RCA: 165] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Full details of the concise and convergent synthesis (eight steps, 19% overall yield), its extension to the preparation of a series of key analogues, and the molecular target and pharmacophore of largazole are described. Central to the synthesis of largazole is a macrocyclization reaction for formation of the strained 16-membered depsipeptide core followed by an olefin cross-metathesis reaction for installation of the thioester. The biological evaluation of largazole and its key analogues, including an acetyl analogue, a thiol analogue, and a hydroxyl analogue, suggested that histone deacetylases (HDACs) are molecular targets of largazole and largazole is a class I HDAC inhibitor. In addition, structure-activity relationship (SAR) studies revealed that the thiol group is the pharmacophore of the natural product. Largazole's HDAC inhibitory activity correlates with its antiproliferative activity.
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Affiliation(s)
- Yongcheng Ying
- Department of Chemistry, Duke University, Durham, North Carolina 27708, USA
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39
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Paquette LA, Lai KW. Studies Directed toward the Total Synthesis of Lancifodilactone G: An Expeditious Route to the ABC Subunit. Org Lett 2008; 10:2111-3. [DOI: 10.1021/ol800418m] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Leo A. Paquette
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210
| | - Kwong Wah Lai
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210
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40
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Lipshutz BH, Aguinaldo GT, Ghorai S, Voigtritter K. Olefin Cross-Metathesis Reactions at Room Temperature Using the Nonionic Amphiphile “PTS”: Just Add Water. Org Lett 2008; 10:1325-8. [DOI: 10.1021/ol800028x] [Citation(s) in RCA: 148] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bruce H. Lipshutz
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106
| | - Grant T. Aguinaldo
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106
| | - Subir Ghorai
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106
| | - Karl Voigtritter
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106
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41
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Ackermann L, Born R, Álvarez-Bercedo P. Ruthenium(IV)-Alkylidene als Katalysatorvorstufen für direkte Arylierungen von Alkenen mit Chlorarenen und eine Anwendung auf die sequenzielle Katalyse. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200701727] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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42
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Abstract
Asymmetric syntheses of (-)-mitorubrin and related azaphilone natural products are reported. Key steps involve copper-mediated, enantioselective oxidative dearomatization to prepare the azaphilone core and olefin cross-metathesis for side-chain installation. [reaction: see text]
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Affiliation(s)
- Jianglong Zhu
- Department of Chemistry and Center for Chemical Methodology and Library Development, Boston University, Boston, MA 02215, USA
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43
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Ackermann L, Born R, Alvarez-Bercedo P. Ruthenium(IV) Alkylidenes as Precatalysts for Direct Arylations of Alkenes with Aryl Chlorides and an Application to Sequential Catalysis. Angew Chem Int Ed Engl 2007; 46:6364-7. [PMID: 17640018 DOI: 10.1002/anie.200701727] [Citation(s) in RCA: 153] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstrasse 2, 37077 Göttingen, Germany.
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44
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Kanada RM, Itoh D, Nagai M, Niijima J, Asai N, Mizui Y, Abe S, Kotake Y. Total Synthesis of the Potent Antitumor Macrolides Pladienolide B and D. Angew Chem Int Ed Engl 2007; 46:4350-5. [PMID: 17437311 DOI: 10.1002/anie.200604997] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Regina M Kanada
- Discovery Research Laboratories II, Eisai Co., Ltd. 5-1-3 Tokodai, Tsukuba, Ibaraki, 300-2635, Japan
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Kanada R, Itoh D, Nagai M, Niijima J, Asai N, Mizui Y, Abe S, Kotake Y. Total Synthesis of the Potent Antitumor Macrolides Pladienolide B and D. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200604997] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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46
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Kim H, Lee H, Lee D, Kim S, Kim D. Asymmetric Total Syntheses of (+)-3-(Z)-Laureatin and (+)-3-(Z)-Isolaureatin by “Lone Pair−Lone Pair Interaction-Controlled” Isomerization. J Am Chem Soc 2007; 129:2269-74. [PMID: 17279755 DOI: 10.1021/ja068346i] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first asymmetric total syntheses of the dihalogenated medium-sized dioxabicyclic marine natural products (+)-3-(Z)-isolaureatin (1) and (+)-3-(Z)-laureatin (2) have been accomplished. Notable features of the highly stereo-, regio-, and chemoselective syntheses of these alpha,alpha'-trans-oxocene natural products include an intramolecular amide enolate alkylation to construct the alpha,alpha'-cis-oxocene, novel "lone pair-lone pair interaction-controlled" epimerizations to the alpha,alpha'-trans-oxocenes, various strategies for stereoselective introduction of halogen atoms, and novel olefin cross-metatheses for construction of the (Z)-enyne systems.
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Affiliation(s)
- Hyoungsu Kim
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, San 56-1, Shinrim-Dong, Kwanak-Ku, Seoul 151-742, Korea
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47
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48
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Bellan LM, Coates GW, Craighead HG. Poly(dicyclopentadiene) Submicron Fibers Produced by Electrospinning. Macromol Rapid Commun 2006. [DOI: 10.1002/marc.200500823] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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49
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Malaisé G, Bonrath W, Breuninger M, Netscher T. A New Route to Vitamin E Key-Intermediates by Olefin Cross-Metathesis. Helv Chim Acta 2006. [DOI: 10.1002/hlca.200690072] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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50
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Comin MJ, Parrish DA, Deschamps JR, Marquez VE. Synthesis of Bicyclo[3.1.0]hexanes Functionalized at the Tip of the Cyclopropane Ring. Application to the Synthesis of Carbocyclic Nucleosides. Org Lett 2006; 8:705-8. [PMID: 16468747 DOI: 10.1021/ol052886n] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] A general synthetic strategy for the preparation of functionalized bicyclo[3.1.0]hexanes is described. The new approach employs a cross metathesis step designed to functionalize the appropriate terminal olefin of the bicyclo[3.1.0]hexane precursor and a carbene-mediated intramolecular cyclopropanation reaction on the corresponding diazo intermediate. This combined methodology allowed the diastereoselective introduction of chemically diverse substituents at the tip of the cyclopropane group, except in cases where the substituents consisted of electron-withdrawing groups where a competing [3 + 2] cycloaddition predominated.
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Affiliation(s)
- Maria J Comin
- Laboratory of Medicinal Chemistry, Center for Cancer Research, National Cancer Institute-Frederick, National Institutes of Health, Frederick, Maryland 21702, USA
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