1
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Masiuk US, Faletrov YV, Kananovich DG, Mineyeva IV. Stereodivergent Assembly of 2,6- cis- and - trans-Tetrahydropyrans via Base-Mediated Oxa-Michael Cyclization: The Key Role of the TMEDA Additive. J Org Chem 2023; 88:355-370. [PMID: 36495268 DOI: 10.1021/acs.joc.2c02382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The stereodivergent synthesis of cis- and trans-2,6-disubstituted tetrahydropyrans (THPs) via sodium hexamethyldisilazide-promoted oxa-Michael cyclization of (E)-ζ-hydroxy α,β-unsaturated esters is presented. The cyclization affords the kinetically favored trans-THPs with high stereoselectivity (dr up to 93:7) at a low temperature (-78 °C), while the room-temperature reaction does not produce the thermodynamically preferred cis-THPs as major products and occurs with poor stereocontrol. The addition of tetramethylethylenediamine (TMEDA) significantly improves the stereochemical outcome of the room-temperature cyclization and allows attaining high cis-selectivity (dr up to 99:1). The remarkable effect of TMEDA indicates that the sodium cation plays an important role in controlling the stereoselectivity of the thermodynamically driven process, that is, complexation of the cation with the cyclization products results in diminished selectivity. DFT calculations support this conclusion, indicating a greater difference in Gibbs energies of sodium-free cis- and trans-enolates compared to the respective sodium chelate complexes. The synthetic utility of the method has been demonstrated by the formal syntheses of (+)-Neopeltolide and (-)-Diospongin B and the total synthesis of (-)-Diospongin A.
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Affiliation(s)
- Uladzimir S Masiuk
- Department of Chemistry, Belarusian State University, Leningradskaya 14, 220006 Minsk, Belarus.,School of Science, Department of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Yaroslav V Faletrov
- Department of Chemistry, Belarusian State University, Leningradskaya 14, 220006 Minsk, Belarus.,Research Institute for Physical Chemical Problems, Belarusian State University, Leningradskaya 14, 220006 Minsk, Belarus
| | - Dzmitry G Kananovich
- School of Science, Department of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Iryna V Mineyeva
- Department of Chemistry, Belarusian State University, Leningradskaya 14, 220006 Minsk, Belarus
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2
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Hussain N, Rasool F, Khan S, Saleem M, Maheshwari M. Advances in the Synthesis of Natural Products and Medicinally Relevant Molecules from Glycals. ChemistrySelect 2022. [DOI: 10.1002/slct.202201873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nazar Hussain
- Department of Medicinal Chemistry Banaras Hindu University India
| | - Faheem Rasool
- Department of Chemistry Govt. College for Women, Parade Ground Jammu 180001 India
| | - Shahnawaz Khan
- Department of Chemistry Central University of Jammu 180001 Jammu India
| | - Mohd Saleem
- Department of Chemistry Govt.Postgraduate college Rajouri India
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3
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Mateus-Ruiz JB, Cordero-Vargas A. Stereoselective Total Synthesis of Aspergillide A: A Visible Light-Mediated Photoredox Access to the Trisubstituted Tetrahydropyran Core. J Org Chem 2019; 84:11848-11855. [PMID: 31416311 DOI: 10.1021/acs.joc.9b01705] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A stereoselective total synthesis of natural product aspergillide A is reported. The adopted strategy relies on the direct access to the key tetrahydropyran core through a visible light-mediated photoredox reaction from an allylic alcohol and iodoacetic acid. In a single manipulation, a γ-iodo-δ-valerolactone is obtained through an atom transfer radical addition followed by in situ acid-catalyzed lactonization. The obtained lactone possesses three functionalized sites, which were seized to link the required substituents in the final product and thus completing the total synthesis of aspergillide A.
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Affiliation(s)
- Jeferson B Mateus-Ruiz
- Instituto de Química , Universidad Nacional Autónoma de México , Circuito Exterior s/n, Ciudad Universitaria , Coyoacán, C.P. 04510 México D.F. , Mexico
| | - Alejandro Cordero-Vargas
- Instituto de Química , Universidad Nacional Autónoma de México , Circuito Exterior s/n, Ciudad Universitaria , Coyoacán, C.P. 04510 México D.F. , Mexico
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4
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Synthesis and biological evaluation of 12-, 13-, 14-membered macrolides and open chain 2,6-trans-disubstituted dihydropyran analogues for aspergillides. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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5
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Gómez-Palomino A, Pellicena M, Krämer K, Romea P, Urpí F, Aullón G, Padrón JM. Total synthesis of (+)-herboxidiene/GEX 1A. Org Biomol Chem 2017; 15:1842-1862. [DOI: 10.1039/c7ob00072c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient synthesis of herboxidiene is granted from highly stereoselective aldol reactions from two lactate-derived ketones and an oxa-Michael cyclization.
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Affiliation(s)
- Alejandro Gómez-Palomino
- Departament de Química Inorgànica i Orgànica
- Secció de Química Orgànica
- and Institut de Biomedicina (IBUB)
- Universitat de Barcelona
- 08028 Barcelona
| | - Miquel Pellicena
- Departament de Química Inorgànica i Orgànica
- Secció de Química Orgànica
- and Institut de Biomedicina (IBUB)
- Universitat de Barcelona
- 08028 Barcelona
| | - Katrina Krämer
- Departament de Química Inorgànica i Orgànica
- Secció de Química Orgànica
- and Institut de Biomedicina (IBUB)
- Universitat de Barcelona
- 08028 Barcelona
| | - Pedro Romea
- Departament de Química Inorgànica i Orgànica
- Secció de Química Orgànica
- and Institut de Biomedicina (IBUB)
- Universitat de Barcelona
- 08028 Barcelona
| | - Fèlix Urpí
- Departament de Química Inorgànica i Orgànica
- Secció de Química Orgànica
- and Institut de Biomedicina (IBUB)
- Universitat de Barcelona
- 08028 Barcelona
| | - Gabriel Aullón
- Departament de Química Inorgànica i Orgànica
- Secció de Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - José M. Padrón
- BioLab
- Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG)
- Centro de Investigaciones Biomédicas de Canarias (CIBICAN)
- Universidad de La Laguna
- Spain
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6
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Fuwa H, Sasaki M. Exploiting Ruthenium Carbene-Catalyzed Reactions in Total Synthesis of Marine Oxacyclic Natural Products. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20160224] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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7
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Hu J, Bian M, Ding H. Recent application of oxa-Michael reaction in complex natural product synthesis. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.11.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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8
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Fuwa H, Yamagata N, Okuaki Y, Ogata Y, Saito A, Sasaki M. Total Synthesis and Complete Stereostructure of a Marine Macrolide Glycoside, (-)-Lyngbyaloside B. Chemistry 2016; 22:6815-29. [PMID: 27112323 DOI: 10.1002/chem.201600341] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Indexed: 11/05/2022]
Abstract
We have described in detail the total synthesis of both the proposed and correct structures of (-)-lyngbyaloside B, which facilitated the elucidation of the complete stereostructure of this natural product. Our study began with the total synthesis of 13-demethyllyngbyaloside B, in which an esterification/ring-closing metathesis (RCM) strategy was successfully used for the efficient construction of the macrocycle. We also established reliable methods for the introduction of the conjugated diene side chain and the l-rhamnose residue onto the macrocyclic framework. However, the esterification/RCM strategy proved ineffective for the parent natural product because of the difficulties in acylating the sterically encumbered C-13 tertiary alcohol; macrolactionization of a seco-acid was also extensively investigated under various conditions without success. We finally completed the total synthesis of the proposed structure of (-)-lyngbyaloside B by means of a macrolactonization that involves an acyl ketene as the reactive species. However, the NMR spectroscopic data of our synthetic material did not match those of the authentic material, which indicated that the proposed structure must be re-examined. Inspection of the NMR spectroscopic data of the natural product and molecular mechanics calculations led us to postulate that the configuration of the C-10, C-11, and C-13 stereogenic centers had been incorrectly assigned in the proposed structure. Finally, our revised structure of (-)-lyngbyaloside B was unambiguously verified through total synthesis.
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Affiliation(s)
- Haruhiko Fuwa
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Naoya Yamagata
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Yuta Okuaki
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Yuya Ogata
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Asami Saito
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Makoto Sasaki
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
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9
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Srihari P, Hari Krishna N, Sridhar Y, Kamal A. A carbohydrate approach for the formal total synthesis of (-)-aspergillide C. Beilstein J Org Chem 2014; 10:3122-6. [PMID: 25670981 PMCID: PMC4311580 DOI: 10.3762/bjoc.10.329] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 12/09/2014] [Indexed: 12/20/2022] Open
Abstract
An enantioselective formal total synthesis of aspergillide C is accomplished using commercially available tri-O-acetyl-D-galactal employing a Ferrier-type C-glycosylation, utilizing a Trost hydrosilylation and protodesilylation as key reactions.
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Affiliation(s)
- Pabbaraja Srihari
- Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
| | - Namballa Hari Krishna
- Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Hyderabad, 500037, India
- Medicinal Chemistry & Pharmacology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
| | - Ydhyam Sridhar
- Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
| | - Ahmed Kamal
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Hyderabad, 500037, India
- Medicinal Chemistry & Pharmacology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
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10
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Subba Reddy BV, Srinivas L, Sivaramakrishna Reddy P, Phaneendra Reddy B, Prasad AR, Yadav JS. A New Stereoselective Total Synthesis of Phomonol. Helv Chim Acta 2014. [DOI: 10.1002/hlca.201300458] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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11
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Torker S, Khan RKM, Hoveyda AH. The influence of anionic ligands on stereoisomerism of Ru carbenes and their importance to efficiency and selectivity of catalytic olefin metathesis reactions. J Am Chem Soc 2014; 136:3439-55. [PMID: 24533571 DOI: 10.1021/ja410606b] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Investigations detailed herein provide insight regarding the mechanism of stereochemical inversion of stereogenic-at-Ru carbene complexes through a nonolefin metathesis-based polytopal rearrangement pathway. Computational analyses (DFT) reveal that there are two key factors that generate sufficient energy barriers that are responsible for the possibility of isolation and characterization of high-energy, but kinetically stable, intermediates: (1) donor-donor interactions that involve the anionic ligands and the strongly electron donating carbene groups and (2) dipolar effects arising from the syn relationship between the anionic groups (iodide and phenoxide). We demonstrate that a Brønsted acid lowers barriers to facilitate isomerization, and that the positive influence of a proton source is the result of its ability to diminish the repulsive electronic interactions originating from the anionic ligands. The implications of the present studies regarding a more sophisticated knowledge of the role of anionic units on the efficiency of Ru-catalyzed olefin metathesis reactions are discussed. The electronic basis for the increased facility with which allylic alcohols participate in olefin metathesis processes will be presented as well. Finally, we illustrate how a better understanding of the role of anionic ligands has served as the basis for successful design of Ru-based Z-selective catalysts for alkene metathesis.
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Affiliation(s)
- Sebastian Torker
- Department of Chemistry, Merkert Chemistry Center, Boston College , Chestnut Hill, Massachusetts 02467, United States
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12
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Nair RN, Bannister TD. Grubbs cross-metathesis pathway for a scalable synthesis of γ-keto-α,β-unsaturated esters. J Org Chem 2014; 79:1467-72. [PMID: 24393145 PMCID: PMC3985456 DOI: 10.1021/jo4023606] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Indexed: 11/29/2022]
Abstract
A direct and scalable route to γ-keto-α,β-unsaturated esters, useful intermediates in medicinal chemistry and natural products synthesis, is reported. The key step involves the use of Grubbs' second-generation olefin metathesis catalyst for cross-metathesis of alkyl acrylates and 2° allylic alcohols. The metathesis step is followed by oxidation to give the desired products in high yield on scales of up to 25 g.
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Affiliation(s)
- Reji N. Nair
- Translational Research Institute
and Department of Chemistry, The Scripps
Research Institute, 130
Scripps Way, Jupiter, Florida 33458, United States
| | - Thomas D. Bannister
- Translational Research Institute
and Department of Chemistry, The Scripps
Research Institute, 130
Scripps Way, Jupiter, Florida 33458, United States
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13
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Wan ZL, Zhang GL, Chen HJ, Wu Y, Li Y. A Chiral Pool and Cross Metathesis Based Synthesis of Gingerdiols. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301727] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Schmidt B, Hauke S. Cross metathesis of allyl alcohols: how to suppress and how to promote double bond isomerization. Org Biomol Chem 2013; 11:4194-206. [PMID: 23676990 DOI: 10.1039/c3ob40167g] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Under standard conditions the cross metathesis of allyl alcohols and methyl acrylate is accompanied by the formation of ketones, resulting from uncontrolled and undesired double bond isomerization. By conducting the CM in the presence of phenol, the catalyst loading and the reaction time required for quantiative conversion can be reduced, and isomerization can be suppressed. On the other hand, consecutive isomerization can be deliberately promoted by evaporating excess methyl acrylate after completing cross metathesis and by adding a base or silane as chemical triggers.
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Affiliation(s)
- Bernd Schmidt
- Universitaet Potsdam, Institut fuer Chemie, Organische Synthesechemie, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam-Golm, Germany.
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15
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Fuwa H, Noto K, Kawakami M, Sasaki M. Synthesis and Biological Evaluation of Aspergillide A/Neopeltolide Chimeras. CHEM LETT 2013. [DOI: 10.1246/cl.130322] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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16
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Lambu MR, Kumar S, Yousuf SK, Sharma DK, Hussain A, Kumar A, Malik F, Mukherjee D. Medicinal Chemistry of Dihydropyran-Based Medium Ring Macrolides Related to Aspergillides: Selective Inhibition of PI3Kα. J Med Chem 2013; 56:6122-35. [DOI: 10.1021/jm400515c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Mallikharjuna R. Lambu
- Academy of
Scientific and Innovative
Research, New Delhi, India
- Natural Product Chemistry Division,
Indian Institute of Integrative Medicine, Jammu, India
| | - Suresh Kumar
- Cancer Pharmacology division,
Indian Institute of Integrative Medicine, Jammu, India
| | - Syed K. Yousuf
- Natural Product Chemistry Division,
Indian Institute of Integrative Medicine, Jammu, India
| | - Deepak K. Sharma
- Academy of
Scientific and Innovative
Research, New Delhi, India
- Natural Product Chemistry Division,
Indian Institute of Integrative Medicine, Jammu, India
| | - Altaf Hussain
- Academy of
Scientific and Innovative
Research, New Delhi, India
- Natural Product Chemistry Division,
Indian Institute of Integrative Medicine, Jammu, India
| | - Ajay Kumar
- Cancer Pharmacology division,
Indian Institute of Integrative Medicine, Jammu, India
| | - Fayaz Malik
- Cancer Pharmacology division,
Indian Institute of Integrative Medicine, Jammu, India
| | - Debaraj Mukherjee
- Academy of
Scientific and Innovative
Research, New Delhi, India
- Natural Product Chemistry Division,
Indian Institute of Integrative Medicine, Jammu, India
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17
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Fuwa H, Yamagata N, Saito A, Sasaki M. Total Synthesis of 13-Demethyllyngbyaloside B. Org Lett 2013; 15:1630-3. [DOI: 10.1021/ol400408w] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haruhiko Fuwa
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Naoya Yamagata
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Asami Saito
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Makoto Sasaki
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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18
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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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19
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Sridhar Y, Srihari P. Stereodivergent Total Synthesis of (+)-Aspergillide B and (+)-7-epi-Aspergillide A. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201155] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Herndon JW. The chemistry of the carbon–transition metal double and triple bond: Annual survey covering the year 2010. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.02.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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21
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22
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Fuwa H. Total Synthesis of Tetrahydropyran-Containing Natural Products Exploiting Intramolecular Oxa-Conjugate Cyclization. HETEROCYCLES 2012. [DOI: 10.3987/rev-12-730] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Affiliation(s)
- Carl F Nising
- Bayer Pharma AG, Aprather Weg 18a, D-42113 Wuppertal, Germany.
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24
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25
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Kanematsu M, Shishido K. Total Synthesis of Aspergillides Using a Transannular Oxy-Michael Strategy. J SYN ORG CHEM JPN 2012. [DOI: 10.5059/yukigoseikyokaishi.70.1196] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Kozo Shishido
- Graduate School of Pharmaceutical Sciences, The University of Tokushima
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26
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Fuwa H, Ichinokawa N, Noto K, Sasaki M. Stereoselective Synthesis of 2,6-Cis-Substituted Tetrahydropyrans: Brønsted Acid-Catalyzed Intramolecular Oxa-Conjugate Cyclization of α,β-Unsaturated Ester Surrogates. J Org Chem 2011; 77:2588-607. [DOI: 10.1021/jo202179s] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Haruhiko Fuwa
- Graduate
School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577,
Japan
| | - Naoki Ichinokawa
- Graduate
School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577,
Japan
| | - Kenkichi Noto
- Graduate
School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577,
Japan
| | - Makoto Sasaki
- Graduate
School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577,
Japan
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27
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Srihari P, Sridhar Y. Total Synthesis of Both Enantiomers of Macrocyclic Lactone Aspergillide C. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100917] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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28
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Pellicena M, Krämer K, Romea P, Urpí F. Total synthesis of (+)-herboxidiene from two chiral lactate-derived ketones. Org Lett 2011; 13:5350-3. [PMID: 21913648 DOI: 10.1021/ol202210k] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A substrate-controlled synthesis of (+)-herboxidiene from two lactate-derived chiral ketones is described. Remarkably, most of the carbon backbone was constructed through highly stereoselective titanium-mediated aldol reactions and an Ireland-Claisen rearrangement. Furthermore, an oxa-Michael cyclization and a high-yield Suzuki coupling were used to assemble the pyran ring and the diene moiety respectively.
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Affiliation(s)
- Miquel Pellicena
- Departament de Química Orgànica, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Catalonia, Spain
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Robertson J, North C, Sadig JE. Asymmetric synthesis of the C(6–18) bis(tetrahydropyran)spiroacetal fragment of the lituarines. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.03.116] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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A new strategy for the synthesis of substituted dihydropyrones and tetrahydropyrones via palladium-catalyzed coupling of thioesters. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.03.114] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Nagasawa T, Nukada T, Kuwahara S. Synthesis of aspergillide A via proline-catalyzed trans-to-cis isomerization of a substituted tetrahydropyran. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.02.061] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Fuwa H, Noto K, Sasaki M. Biosynthesis-Inspired Intramolecular Oxa-Conjugate Cyclization of α,β-Unsaturated Thioesters: Stereoselective Synthesis of 2,6-cis-Substituted Tetrahydropyrans. Org Lett 2011; 13:1820-3. [DOI: 10.1021/ol200333p] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haruhiko Fuwa
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Kenkichi Noto
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Makoto Sasaki
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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Kanematsu M, Yoshida M, Shishido K. Total Synthesis of Aspergillide A and B Based on the Transannular Oxy-Michael Reaction. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007327] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Kanematsu M, Yoshida M, Shishido K. Total Synthesis of Aspergillide A and B Based on the Transannular Oxy-Michael Reaction. Angew Chem Int Ed Engl 2011; 50:2618-20. [DOI: 10.1002/anie.201007327] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Revised: 01/04/2010] [Indexed: 11/09/2022]
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Izuchi Y, Kanomata N, Koshino H, Hongo Y, Nakata T, Takahashi S. Formal total synthesis of aspergillide A. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.01.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Díaz-Oltra S, Angulo-Pachón CA, Murga J, Falomir E, Carda M, Marco JA. Synthesis and biological properties of the cytotoxic 14-membered macrolides aspergillide A and B. Chemistry 2010; 17:675-88. [PMID: 21207589 DOI: 10.1002/chem.201001682] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2010] [Revised: 09/03/2010] [Indexed: 11/07/2022]
Abstract
Total, stereoselective syntheses of the naturally occurring, cytotoxic macrolides aspergillide A and B are described. Olefin metatheses and asymmetric allylations were key steps in the synthetic sequences. Cytotoxicity assays against several tumor cell lines have been performed for the two aspergillides and some of the intermediates or side products of the synthetic sequence. One of these intermediates has been found markedly active against the human leukemia cancer cell line HL-60, with an IC(50) value comparable with that of the clinical drug fludarabine.
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Affiliation(s)
- Santiago Díaz-Oltra
- Depart. de Q. Inorgánica y Orgánica, Univ. Jaume I, Avda. Sos Baynat s/n, 12071 Castellón, Spain
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