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Sakamoto R, Odagi M, Izumiseki A, Konuki K, Nagasawa K. Stereodivergent Synthesis of 1,3-Dienes via Protodeboronation of Homoallenylboronic Esters. J Org Chem 2022; 87:8084-8098. [PMID: 35671244 DOI: 10.1021/acs.joc.2c00744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Vinylboronic esters and allylboronic esters are well known to afford olefins by protodeboronation, and therefore homoallenylboronic esters should be similarly available as precursors for 1,3-dienes, but this strategy has not been well explored due to the limited availability of homoallenylboronic esters. Here, we describe a versatile synthesis of homoallenylboronic esters via lithiation-borylation and subsequent 1,2-rearrangement. The resulting homoallenylboronic esters were successfully converted into Z- and E-1,3-dienes by protodeboronation using Bu4NF and B(C6F5)3/PhOH, respectively.
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Affiliation(s)
- Ryota Sakamoto
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Minami Odagi
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Atsuto Izumiseki
- Research & Development Division, MicroBiopharm Japan Co., Ltd. 156 Nakagawara, Kiyosu, Aichi 452-0915, Japan
| | - Kaname Konuki
- Research & Development Division, MicroBiopharm Japan Co., Ltd. 156 Nakagawara, Kiyosu, Aichi 452-0915, Japan
| | - Kazuo Nagasawa
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Koganei, Tokyo 184-8588, Japan
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2
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Soengas RG, Rodríguez-Solla H. Modern Synthetic Methods for the Stereoselective Construction of 1,3-Dienes. Molecules 2021; 26:molecules26020249. [PMID: 33418882 PMCID: PMC7825119 DOI: 10.3390/molecules26020249] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 12/31/2020] [Accepted: 01/03/2021] [Indexed: 11/16/2022] Open
Abstract
The 1,3-butadiene motif is widely found in many natural products and drug candidates with relevant biological activities. Moreover, dienes are important targets for synthetic chemists, due to their ability to give access to a wide range of functional group transformations, including a broad range of C-C bond-forming processes. Therefore, the stereoselective preparation of dienes have attracted much attention over the past decades, and the search for new synthetic protocols continues unabated. The aim of this review is to give an overview of the diverse methodologies that have emerged in the last decade, with a focus on the synthetic processes that meet the requirements of efficiency and sustainability of modern organic chemistry.
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González-Rodríguez J, Soengas RG, Rodríguez-Solla H. A cooperative zinc/catalytic indium system for the stereoselective sequential synthesis of ( E)-1,3-dienes from carbonyl compounds. Org Chem Front 2021. [DOI: 10.1039/d0qo01388a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel cooperative system based on zinc/catalytic indium for the stereoselective synthesis of highly functionalized (E)-1,3-dienes from aldehydes and ketones has been developed.
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Affiliation(s)
| | - Raquel G. Soengas
- Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- Oviedo
- Spain
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Eren NM, Orr SA, Thompson CD, Border EC, Stevens MA, Blair VL. Synthesis, Structure, and Solution Studies of Lithiated Allylic Phosphines and Phosphine Oxides. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nimrod M. Eren
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | - Samantha A. Orr
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | | | - Emily C. Border
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | - Michael A. Stevens
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | - Victoria L. Blair
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
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Abstract
Synthetic rubbers fabricated from 1,3-butadiene (BD) and its substituted monomers have been extensively used in tires, toughened plastics, and many other products owing to the easy polymerization/copolymerization of these monomers and the high stability of the resulting material in manufacturing operations and large-scale productions. The need for synthetic rubbers with increased environmental friendliness or endurance in harsh environments has motivated remarkable progress in the synthesis of BD and its substituted monomers in recent years. We review these developments with an emphasis on the reactive routes, the products, and the synthetic strategies with a scaling potential. We present reagents that are primarily from bio-derivatives, including ethanol, C4 alcohols, unsaturated alcohols, and tetrahydrofuran; the major products of BD and isoprene; and the by-products, activities, and selectivity of the reaction. Different catalyst systems are also compared. Further, substituted monomers with rigid, polar, or sterically repulsive groups, the purpose of which is to enhance thermal, mechanical, and interface properties, are also exhaustively reviewed. The synthetic strategies using BD and its substituted monomers have great potential to satisfy the increasing demand for better-performing synthetic rubbers at the laboratory scale; the laboratory-scale results are promising, but a big gap still exists between current progress and large scalability.
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Allred TK, Manoni F, Harran PG. Exploring the Boundaries of “Practical”: De Novo Syntheses of Complex Natural Product-Based Drug Candidates. Chem Rev 2017; 117:11994-12051. [DOI: 10.1021/acs.chemrev.7b00126] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tyler K. Allred
- Department of Chemistry and
Biochemistry, University of California−Los Angeles, 607 Charles
E. Young Drive East, Los Angeles, California 90095-1569, United States
| | - Francesco Manoni
- Department of Chemistry and
Biochemistry, University of California−Los Angeles, 607 Charles
E. Young Drive East, Los Angeles, California 90095-1569, United States
| | - Patrick G. Harran
- Department of Chemistry and
Biochemistry, University of California−Los Angeles, 607 Charles
E. Young Drive East, Los Angeles, California 90095-1569, United States
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8
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Timsina YN, Biswas S, RajanBabu TV. Chemoselective reactions of (E)-1,3-dienes: cobalt-mediated isomerization to (Z)-1,3-dienes and reactions with ethylene. J Am Chem Soc 2014; 136:6215-8. [PMID: 24712838 PMCID: PMC4046774 DOI: 10.1021/ja501979g] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Indexed: 01/24/2023]
Abstract
In the asymmetric hydrovinylation (HV) of an E/Z-mixture of a prototypical 1,3-diene with (S,S)-(DIOP)CoCl2 or (S,S)-(BDPP)CoCl2 catalyst in the presence of Me3Al, the (E)-isomer reacts significantly faster, leaving behind the Z-isomer intact at the end of the reaction. The presumed [LCo-H](+)-intermediate, especially when L is a large-bite angle ligand, similar to DIOP and BDPP, promote an unusual isomerization of (E/Z)-mixtures of 1,3-dienes to isomerically pure Z-isomers. A mechanism that involves an intramolecular hydride addition via an [η(4)-(diene)(LCo-H)](+) complex, followed by π-σ-π isomerization of the intermediate Co(allyl) species, is proposed for this reaction.
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Affiliation(s)
- Yam N. Timsina
- Department
of Chemistry and Biochemistry, The Ohio
State University, Columbus, Ohio 43210, United
States
| | - Souvagya Biswas
- Department
of Chemistry and Biochemistry, The Ohio
State University, Columbus, Ohio 43210, United
States
| | - T. V. RajanBabu
- Department
of Chemistry and Biochemistry, The Ohio
State University, Columbus, Ohio 43210, United
States
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González-Nogal AM, Cuadrado P. Epoxysilanes as substrates in regio- and stereo-specific synthesis of silylated γ-hydroxyphosphane oxides, precursors of stereodefined allylphosphane oxides. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Affiliation(s)
- Matthew J. Campbell
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
| | - Jeffrey S. Johnson
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
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Mundal DA, Lutz KE, Thomson RJ. Stereoselective Synthesis of Dienes from N-Allylhydrazones. Org Lett 2008; 11:465-8. [DOI: 10.1021/ol802585r] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Devon A. Mundal
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208
| | - Kelly E. Lutz
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208
| | - Regan J. Thomson
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208
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Florence GJ, Gardner NM, Paterson I. Development of practical syntheses of the marine anticancer agents discodermolide and dictyostatin. Nat Prod Rep 2008; 25:342-75. [PMID: 18389141 DOI: 10.1039/b705661n] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Initially isolated in trace quantities from deep-sea sponges, the structurally related polyketides discodermolide and dictyostatin share the same microtubule-stabilizing antimitotic mechanism as Taxol. Discodermolide has been the focus of intense research activity in order to develop a practical supply route, and these efforts ultimately allowed its large-scale synthesis and the initiation of clinical trials as a novel anticancer drug. Similarly, the re-isolation and synthesis of dictyostatin continues to stimulate the biological and chemical communities in their quest for the development of new chemotherapeutic agents. This comprehensive review chronicles the synthetic endeavours undertaken over the last 15 years towards the development and realization of practical chemical syntheses of discodermolide and, more recently, dictyostatin, focusing on the methods and strategies employed for achieving overall stereocontrol and key fragment unions, as well as the design and synthesis of novel hybrid structures.
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Affiliation(s)
- Gordon J Florence
- School of Chemistry and Centre for Biomolecular Sciences, University of St Andrews, North Haugh, St Andrews KY16 9 ST, United Kingdom.
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Smith AB, Freeze BS. (+)-Discodermolide: Total Synthesis, Construction of Novel Analogues, and Biological Evaluation. Tetrahedron 2008; 64:261-298. [PMID: 21113402 DOI: 10.1016/j.tet.2007.10.039] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Amos B Smith
- Department of Chemistry, Monell Chemical Senses Center, Penn Center for Molecular Discovery, and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, PA 19104
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Paterson I, Florence GJ. The Chemical Synthesis of Discodermolide. Top Curr Chem (Cham) 2008; 286:73-119. [DOI: 10.1007/128_2008_7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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Vedejs E, Peterson MJ. Stereochemistry and Mechanism in the Wittig Reaction. TOPICS IN STEREOCHEMISTRY 2007. [DOI: 10.1002/9780470147306.ch1] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Le Flohic A, Meyer C, Cossy J. Reactivity of unsaturated sultones synthesized from unsaturated alcohols by ring-closing metathesis. Application to the racemic synthesis of the originally proposed structure of mycothiazole. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.07.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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Unusual and Novel C11H16Hydrocarbons from the Southern Australian Brown AlgaDictyopteris acrostichoides(Phaeophyceae). Helv Chim Acta 2004. [DOI: 10.1002/hlca.19920750309] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Burlingame MA, Shaw SJ, Sundermann KF, Zhang D, Petryka J, Mendoza E, Liu F, Myles DC, LaMarche MJ, Hirose T, Scott Freeze B, Smith AB. Design, synthesis and cytotoxicity of 7-deoxy aryl discodermolide analogues. Bioorg Med Chem Lett 2004; 14:2335-8. [PMID: 15081036 DOI: 10.1016/j.bmcl.2004.01.102] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2003] [Revised: 01/28/2004] [Accepted: 01/28/2004] [Indexed: 11/29/2022]
Abstract
A series of 7-deoxy discodermolide analogues in which the lactone fragment 'C' was replaced by aryl substituents were designed, synthesized, and evaluated for cytotoxicity.
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Affiliation(s)
- Mark A Burlingame
- Department of Chemistry, Kosan Biosciences Inc, 3832 Bay Center Place, Hayward, CA 94545, USA.
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20
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Cacatian ST, Fuchs PL. Synthesis of allyl phosphine oxides/boranes via Horner reaction of bis(diphenylphosphine)ethane monoxide reagent with an aldehyde. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)01057-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Paterson I, Florence G. The Development of a Practical Total Synthesis of Discodermolide, a Promising Microtubule‐Stabilizing Anticancer Agent. European J Org Chem 2003. [DOI: 10.1002/ejoc.200300061] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ian Paterson
- University Chemical Laboratory Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Gordon J. Florence
- University Chemical Laboratory Lensfield Road, Cambridge, CB2 1EW, United Kingdom
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22
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Kabalka GW, Wu Z, Ju Y. A new method for alkylation of aromatic aldehydes using alkylboron chloride derivatives in the presence of oxygen. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00237-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Martello LA, LaMarche MJ, He L, Beauchamp TJ, Smith AB, Horwitz SB. The relationship between Taxol and (+)-discodermolide: synthetic analogs and modeling studies. CHEMISTRY & BIOLOGY 2001; 8:843-55. [PMID: 11564553 DOI: 10.1016/s1074-5521(01)00055-2] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
BACKGROUND During the past decade, Taxol has assumed an important role in cancer chemotherapy. The search for novel compounds with a mechanism of action similar to that of Taxol, but with greater efficacy particularly in Taxol-resistant cells, has led to the isolation of new natural products. One such compound, (+)-discodermolide, although structurally distinct from Taxol, has a similar ability to stabilize microtubules. In addition, (+)-discodermolide is active in Taxol-resistant cell lines that overexpress P-glycoprotein, the multidrug-resistant transporter. Interestingly, (+)-discodermolide demonstrates a profound enhancement of the initiation process of microtubule polymerization compared to Taxol. RESULTS The synthesis of (+)-discodermolide analogs exploiting our highly efficient, triply convergent approach has permitted structure-activity relationship (SAR) studies. Small changes to the (+)-discodermolide structure resulted in a dramatic decrease in the ability of all four discodermolide analogs to initiate tubulin polymerization. Two of the analogs also demonstrated a decrease in total tubulin polymerization, while a change in the olefin geometry at the C8 position produced a significant decrease in cytotoxic activity. CONCLUSIONS The availability of (+)-discodermolide and the analogs, and the resultant SAR analysis, have permitted an exploration of the similarities and differences between (+)-discodermolide and Taxol. Docking of the X-ray/solution structure of (+)-discodermolide into the Taxol binding site of beta-tubulin revealed two possible binding modes (models I and II). The preferred pharmacophore model (I), in which the C19 side chain of (+)-discodermolide matches with the C2 benzoyl group of Taxol and the delta-lactone ring of (+)-discodermolide overlays with the C13 side chain of Taxol, concurred with the results of the SAR analysis.
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Affiliation(s)
- L A Martello
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
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24
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Kabalka GW, Wu Z, Ju Y. Chloroalkylation of aryl aldehydes using alkylboron dichlorides in the presence of oxygen. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)01271-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Smith AB, Beauchamp TJ, LaMarche MJ, Kaufman MD, Qiu Y, Arimoto H, Jones DR, Kobayashi K. Evolution of a Gram-Scale Synthesis of (+)-Discodermolide. J Am Chem Soc 2000. [DOI: 10.1021/ja0015287] [Citation(s) in RCA: 201] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Amos B. Smith
- Contribution from the Department of Chemistry, Monell Chemical Senses Center, and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Thomas J. Beauchamp
- Contribution from the Department of Chemistry, Monell Chemical Senses Center, and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Matthew J. LaMarche
- Contribution from the Department of Chemistry, Monell Chemical Senses Center, and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Michael D. Kaufman
- Contribution from the Department of Chemistry, Monell Chemical Senses Center, and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Yuping Qiu
- Contribution from the Department of Chemistry, Monell Chemical Senses Center, and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Hirokazu Arimoto
- Contribution from the Department of Chemistry, Monell Chemical Senses Center, and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - David R. Jones
- Contribution from the Department of Chemistry, Monell Chemical Senses Center, and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Kaoru Kobayashi
- Contribution from the Department of Chemistry, Monell Chemical Senses Center, and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104
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Smith AB, Kaufman MD, Beauchamp TJ, LaMarche MJ, Arimoto H. Gram-scale synthesis of (+)-discodermolide. Org Lett 1999; 1:1823-6. [PMID: 10836041 DOI: 10.1021/ol9910870] [Citation(s) in RCA: 105] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[formula: see text] A triply convergent, highly efficient second-generation synthesis of the potent antimitotic agent (+)-discodermolide (1) has been achieved on a 1-g scale.
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Affiliation(s)
- A B Smith
- Department of Chemistry, Monell Chemical Senses Center, University of Pennsylvania 19104, USA.
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28
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Wang Y, Arif AM, West FG. A Novel Cycloisomerization of Tetraenones: 4+3 Trapping of the Nazarov Oxyallyl Intermediate. J Am Chem Soc 1999. [DOI: 10.1021/ja9837001] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yong Wang
- Department of Chemistry, University of Utah 315 South 1400 East, Rm. Dock Salt Lake City, Utah 84112-0850
| | - Atta M. Arif
- Department of Chemistry, University of Utah 315 South 1400 East, Rm. Dock Salt Lake City, Utah 84112-0850
| | - F. G. West
- Department of Chemistry, University of Utah 315 South 1400 East, Rm. Dock Salt Lake City, Utah 84112-0850
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Harayama H, Kimura M, Tanaka S, Tamaru Y. Selective reaction of π-allyl(alkyloxy)palladium(II) complexes toward β-decarbopalladation, β-dehydropalladation, and reductive elimination. Tetrahedron Lett 1998. [DOI: 10.1016/s0040-4039(98)01865-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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30
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Stork G, West F, Lee HY, Isaacs RCA, Manabe S. The Total Synthesis of a Natural Cardenolide: (+)-Digitoxigenin. J Am Chem Soc 1996. [DOI: 10.1021/ja962163m] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gilbert Stork
- Department of Chemistry, Columbia University New York, New York 10027
| | - Fred West
- Department of Chemistry, Columbia University New York, New York 10027
| | - Hee Yoon Lee
- Department of Chemistry, Columbia University New York, New York 10027
| | | | - Shino Manabe
- Department of Chemistry, Columbia University New York, New York 10027
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Tang Y, Huang YZ, Dai LX, Chi ZF, Shi LP. Cyclopropanation Reactions of Allylic Ylides with α,β-Unsaturated Esters and Amides: Tuning of Stereoselectivity and the Dramatic Effect of Lithium Salts. J Org Chem 1996. [DOI: 10.1021/jo960063t] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yong Tang
- Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Academia Sinica, 354 Fenglin lu, Shanghai 200032, China, and Department of Chemistry, Chengdu Teachers' College, Chengdu 611930, Sichuan, China
| | - Yao-Zeng Huang
- Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Academia Sinica, 354 Fenglin lu, Shanghai 200032, China, and Department of Chemistry, Chengdu Teachers' College, Chengdu 611930, Sichuan, China
| | - Li-Xin Dai
- Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Academia Sinica, 354 Fenglin lu, Shanghai 200032, China, and Department of Chemistry, Chengdu Teachers' College, Chengdu 611930, Sichuan, China
| | - Zheng-Fa Chi
- Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Academia Sinica, 354 Fenglin lu, Shanghai 200032, China, and Department of Chemistry, Chengdu Teachers' College, Chengdu 611930, Sichuan, China
| | - Li-Ping Shi
- Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Academia Sinica, 354 Fenglin lu, Shanghai 200032, China, and Department of Chemistry, Chengdu Teachers' College, Chengdu 611930, Sichuan, China
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Lautens M, Ben RN, Delanghe PH. Allyl 1,1-bimetallic species: Their preparation and reactivity profile. Tetrahedron 1996. [DOI: 10.1016/0040-4020(96)00247-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ito H, Nakamura T, Taguchi T, Hanzawa Y. Generation of allylic and related organozirconiums through a highly effective zirconium—β-alkoxide elimination reaction. Tetrahedron 1995. [DOI: 10.1016/0040-4020(94)01137-o] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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34
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35
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Giguere RJ, Herberich B. Microwave Heating in Synthesis: Preparation of Allyldiphenylphosphine Oxide. SYNTHETIC COMMUN 1991. [DOI: 10.1080/00397919108055453] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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36
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Jousseaume B, Villeneuve P. (4+2) cycloadditions of acetylenic organotins : synthetic applications of polyfunctional cyclic vinyltins. Tetrahedron 1989. [DOI: 10.1016/0040-4020(89)80023-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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