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Pignataro L, Piarulli U. A Long Journey through Organic Chemistry – Celebrating Cesare Gennari's 70th Birthday. European J Org Chem 2022. [DOI: 10.1002/ejoc.202201160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Luca Pignataro
- Dipartimento di Chimica Università degli Studi di Milano Via C. Golgi, 19 20133 Milano Italy
| | - Umberto Piarulli
- Università degli Studi dell'Insubria Dipartimento di Scienza e Alta Tecnologia Via Valleggio, 11 I-22100 Como Italy
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2
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Frichert A, Jones PG, Lindel T. Synthesis of eunicellane-type bicycles embedding a 1,3-cyclohexadiene moiety. Beilstein J Org Chem 2018; 14:2461-2467. [PMID: 30344769 PMCID: PMC6176824 DOI: 10.3762/bjoc.14.222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Accepted: 09/05/2018] [Indexed: 11/23/2022] Open
Abstract
The first synthesis of diterpenoid eunicellane skeletons incorporating a 1,3-cyclohexadiene moiety is presented. Key step is a low-valent titanium-induced pinacol cyclization that proved to be perfectly diastereoselective. Determination of the relative configuration of the diol was aided by the conversion to the diastereomer by oxidation and reduction. Conformational analysis of some of the resulting diols obtained under McMurry conditions was complicated by the presence of several conformers of similar energy. The pinacol coupling appears to start at the ketone, as indicated by the selective reduction of non-cyclizing cyclohexane systems that were synthesized from limonene oxide. The title compounds and their synthetic precursors are prone to aromatization on contact with air oxygen. Attempted synthesis of cyclohexene-containing eunicellane bicycles by elimination of water from tertiary alkynyl carbinols afforded novel allene systems. Our study may be of help towards the total synthesis of solenopodin or klysimplexin derivatives.
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Affiliation(s)
- Alex Frichert
- Institute of Organic Chemistry, TU Braunschweig, Hagenring 30, 38106 Braunschweig, Germany, Fax: (+49) 531-391-7744
| | - Peter G Jones
- Institute of Inorganic and Analytical Chemistry, TU Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Thomas Lindel
- Institute of Organic Chemistry, TU Braunschweig, Hagenring 30, 38106 Braunschweig, Germany, Fax: (+49) 531-391-7744
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3
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Chatterjee S, Guchhait S, Goswami RK. Stereoselective Total Synthesis of Cytospolide P. J Org Chem 2014; 79:7689-95. [DOI: 10.1021/jo501184t] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Shamba Chatterjee
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Sandip Guchhait
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Rajib Kumar Goswami
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
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4
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5
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Affiliation(s)
- Joëlle Prunet
- WestCHEM, Department of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow G12 8QQ, UK, Fax: +44‐141‐330‐4888
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6
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Tannert R, Milroy LG, Ellinger B, Hu TS, Arndt HD, Waldmann H. Synthesis and Structure−Activity Correlation of Natural-Product Inspired Cyclodepsipeptides Stabilizing F-Actin. J Am Chem Soc 2010; 132:3063-77. [DOI: 10.1021/ja9095126] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- René Tannert
- Max-Planck-Institut für molekulare Physiologie, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany, and Technische Universität Dortmund Fakultät Chemie, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
| | - Lech-Gustav Milroy
- Max-Planck-Institut für molekulare Physiologie, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany, and Technische Universität Dortmund Fakultät Chemie, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
| | - Bernhard Ellinger
- Max-Planck-Institut für molekulare Physiologie, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany, and Technische Universität Dortmund Fakultät Chemie, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
| | - Tai-Shan Hu
- Max-Planck-Institut für molekulare Physiologie, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany, and Technische Universität Dortmund Fakultät Chemie, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
| | - Hans-Dieter Arndt
- Max-Planck-Institut für molekulare Physiologie, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany, and Technische Universität Dortmund Fakultät Chemie, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
| | - Herbert Waldmann
- Max-Planck-Institut für molekulare Physiologie, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany, and Technische Universität Dortmund Fakultät Chemie, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
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7
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Waldmann H, Hu TS, Renner S, Menninger S, Tannert R, Oda T, Arndt HD. Total Synthesis of Chondramide C and Its Binding Mode to F-Actin. Angew Chem Int Ed Engl 2008; 47:6473-7. [DOI: 10.1002/anie.200801010] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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8
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Waldmann H, Hu TS, Renner S, Menninger S, Tannert R, Oda T, Arndt HD. Totalsynthese von Chondramid C und Bindung an F-Aktin. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200801010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Matsuya Y, Takayanagi SI, Nemoto H. Kinetically Controlled Ring-Closing Metathesis: Synthesis of a Potential Scaffold for 12-Membered Salicylic Macrolides. Chemistry 2008; 14:5275-81. [DOI: 10.1002/chem.200800249] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Fürstner A, Nagano T, Müller C, Seidel G, Müller O. Total Synthesis and Evaluation of the Actin-Binding Properties of Microcarpalide and a Focused Library of Analogues. Chemistry 2007; 13:1452-62. [PMID: 17124714 DOI: 10.1002/chem.200601370] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A comparative investigation shows that hydroxylated 10-membered lactones modeled around the fungal metabolites microcarpalide (1) and pinolidoxin (2) are endowed with selective actin-binding properties. Although less potent than the marine natural product latrunculin A, which represents the standard in the field, nonenolides of this type are significantly less toxic and accommodate substantial structural editing. Most notable is the fact that even an intramolecular transesterification with formation of a hydroxylated butanolide skeleton does not annihilate their microfilament disrupting capacity. This finding calls for a reinvestigation of the biological profile of other fungal metabolites that embody a similar motif. Microcarpalide (1) serving as the calibration point for this comparative study was prepared by total synthesis based on ring-closing metathesis (RCM) as the key step. The chosen route favorably compares to previous approaches to this target and provides further support for the notion that the (E,Z)-configuration of a medium-sized cycloalkene can be controlled by proper choice of the catalyst as previously outlined by our group. 9-epi-Microcarpalide 26 and furanone 27 as representative examples of the "natural productlike" compounds investigated herein have been characterized by crystal structure analysis.
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Affiliation(s)
- Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany.
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11
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Daniel PT, Koert U, Schuppan J. Apoptolidin: Induction of Apoptosis by a Natural Product. Angew Chem Int Ed Engl 2006; 45:872-93. [PMID: 16404760 DOI: 10.1002/anie.200502698] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Apoptolidin is a natural product that selectively induces apoptosis in several cancer cell lines. Apoptosis, programmed cell death, is a biological key pathway for regulating homeostasis and morphogenesis. Apoptotic misregulations are connected with several diseases, in particular cancer. The extrinsic way to apoptosis leads through death ligands and death receptors to the activiation of the caspase cascade, which results in proteolytic degradation of the cell architecture. The intrinsic pathway transmits signals of internal cellular damage to the mitochondrion, which loses its structural integrity, and forms an apoptosome that initiates the caspase cascade. Compounds which regulate apoptosis are of high medical significance. Many natural products regulate apoptotic pathways, and apoptolidin is one of them. The known synthetic routes to apoptolidin are described and compared in this Review. Selected further natural products which regulate apoptosis are introduced briefly.
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Affiliation(s)
- Peter T Daniel
- Department of Hematology, Oncology and Tumor Immunology, University Medical Center Charité, Humboldt University of Berlin, Germany
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12
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Daniel PT, Koert U, Schuppan J. Apoptolidin: Induktion von Apoptose durch einen Naturstoff. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200502698] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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13
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Castoldi D, Caggiano L, Panigada L, Sharon O, Costa AM, Gennari C. A Formal Total Synthesis of Eleutherobin Using the Ring-Closing Metathesis (RCM) Reaction of a Densely Functionalized Diene as the Key Step: Investigation of the Unusual Kinetically Controlled RCM Stereochemistry. Chemistry 2006; 12:51-62. [PMID: 16173100 DOI: 10.1002/chem.200500749] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Asymmetric oxyallylation reactions and ring-closing metathesis have been used to synthesize compound 3, a key advanced intermediate used in the total synthesis of eleutherobin reported by Danishefsky and co-workers. The aldehyde 6, which is readily prepared from commercially available R-(-)-carvone in six steps in 30 % overall yield on multigram quantities, was converted into the diene 5 utilizing two stereoselective titanium-mediated Hafner-Duthaler oxyallylation reactions. The reactions gave the desired products (8 and 12) in high yields (73 and 83 %, respectively) as single diastereoisomers, with the allylic alcohol already protected as the p-methoxyphenyl (PMP) ether, which previous work has demonstrated actually aids ring-closing metathesis compared to other protective groups and the corresponding free alcohol. Cyclization under forcing conditions, using Grubbs' second-generation catalyst 13, gave the ten-membered carbocycle (E)-14 in 64 % yield. This result is in sharp contrast to similar, but less functionalized, dienes, which have all undergone cyclization to give the Z stereoisomers exclusively. A detailed investigation of this unusual cyclization stereochemistry by computational methods has shown that the E isomer of the ten-membered carbocycle is indeed less thermodynamically stable than the corresponding Z isomer. In fact, the selectivity is believed to be due to the dense functionality around the ruthenacyclobutane intermediate that favors the trans-ruthenacycle, which ultimately leads to the less stable E isomer of the ten-membered carbocycle under kinetic control. During the final synthetic manipulations the double bond of enedione (E)-16 isomerized to the more thermodynamically stable enedione (Z)-4, giving access to the advanced key-intermediate 3, which was spectroscopically and analytically identical to the data reported by Danishefsky and co-workers, and thereby completing the formal synthesis of eleutherobin.
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Affiliation(s)
- Damiano Castoldi
- Dipartimento di Chimica Organica e Industriale, Centro di Eccellenza C.I.S.I. Università degli Studi di Milano, Istituto di Scienze e Tecnologie Molecolari (ISTM) del CNR, Via G. Venezian, 21, 20133 Milano, Italy
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14
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Friedel M, Golz G, Mayer P, Lindel T. Oxidative cyclization of a seco-cladiellane diterpenoid. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.01.080] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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