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Cheng B, Sunderhaus JD, Martin SF. Applications of Ring Closing Metathesis. Total Synthesis of (±)-Pseudotabersonine. Tetrahedron 2015; 71:7323-7331. [PMID: 26300565 DOI: 10.1016/j.tet.2015.04.082] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
A novel approach to the Aspidosperma family of alkaloids was developed and applied to a concise total synthesis of (±)-pseudotabersonine that was accomplished in 11 steps. Key transformations include a stepwise variant of a Mannich-like multicomponent assembly process, a double ring-closing metathesis sequence, and a one-pot deprotection/cyclization reaction.
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Affiliation(s)
- Bo Cheng
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712
| | - James D Sunderhaus
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712
| | - Stephen F Martin
- Department of Chemistry, The University of Texas at Austin, Austin, TX 78712
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Cheng B, Sunderhaus JD, Martin SF. Concise total synthesis of (+/-)-pseudotabersonine via double ring-closing metathesis strategy. Org Lett 2010; 12:3622-5. [PMID: 20704405 DOI: 10.1021/ol101356u] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A concise synthesis of (+/-)-pseudotabersonine from commercially available 1-(phenylsulfonyl)-3-indolecarboxaldehyde has been accomplished. This synthesis features the convergent assembly of a key intermediate via a stepwise variant of a Mannich-type multicomponent coupling process, a double ring-closing metathesis, and a one-pot deprotection/cyclization reaction.
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Affiliation(s)
- Bo Cheng
- Department of Chemistry and Biochemistry, The University of Texas, Austin, Texas 78712, USA
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Temme O, Taj SA, Andersson PG. Highly Enantioselective Intermolecular Cu(I)-Catalyzed Cyclopropanation of Cyclic Enol Ethers. Asymmetric Total Synthesis of (+)-Quebrachamine. J Org Chem 1998; 63:6007-6015. [PMID: 11672205 DOI: 10.1021/jo9807417] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A set of cyclic enol ethers derived from 2,3-dihydrofuran 35 and 3,4-dihydropyran 8 with a varying substitution pattern at the olefinic system were synthesized. Evans's ligand 5 with Cu(I)OTf was found to be an effective catalyst in the cyclopropanation reaction between cyclic enol ethers 14, 19, 28-31, and 33 and ethyl diazoacetate 6 to give diastereoselectivities up to exo/endo = 95:5 and enantioselectivities higher than 95% in nearly all cases. Because of the selective building of a quarternary carbon center and good yields in the formation of bicyclic structures 34c-h, the reaction was used as a key step in the asymmetric synthesis of (+)-quebrachamine 7, an indole alkaloid of the Aspidosperma family. After acid-induced ring opening of bicyclic compound 34f to lactone 40 followed by LiAlH(4) reduction to the masked aldehyde 41, a reaction with tryptamine gave intermediate 42. This alcohol was efficiently converted into the indole alkaloid (+)-quebrachamine 7 in an overall yield of 37% starting from the chiral synthon 34f. Moreover it revealed the absolute configuration of the quarternary center of the cyclopropanation product 34f to be S.
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Affiliation(s)
- Oliver Temme
- Department of Organic Chemistry, Uppsala University, Box 531, S-751 21 Uppsala, Sweden
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Royer D, Yu YL, Hugel G, Lévy J. Stabilized zwitterionic derivatives from the reaction of 16-chloro-1-dehydrovincadifformine with sodium alkoxides. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(98)00293-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Takayama H, Sakai SI. Chapter 11 Monoterpenoid Indole Alkaloid Syntheses Utilizing Biomimetic Reactions. THE ALKALOIDS: CHEMISTRY AND BIOLOGY 1998. [DOI: 10.1016/s1099-4831(08)60049-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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6
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7
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Lewin G, Schaeffer C, Morgant G, Nguyen-Huy D. Rearrangement of Aspidosperma Alkaloids with a Modified Tryptamine Chain. Revised Structure of the Polonovski−Potier Reaction Product of 5-Cyano-16-chloro-1-dehydrovincadifformine. J Org Chem 1996. [DOI: 10.1021/jo961373e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Guy Lewin
- Laboratoire de Pharmacognosie, Faculté de Pharmacie, bld. Becquerel, 14032 Caen Cedex, France, Laboratoire de Pharmacognosie and Laboratoire de Chimie Physique Minérale et Bioinorganique, Faculté de Pharmacie, av. J. B. Clément, 92296 Châtenay-Malabry Cedex, France, and Institut de Recherches Servier, 11 rue des Moulineaux, 92150 Suresnes, France
| | - Corinne Schaeffer
- Laboratoire de Pharmacognosie, Faculté de Pharmacie, bld. Becquerel, 14032 Caen Cedex, France, Laboratoire de Pharmacognosie and Laboratoire de Chimie Physique Minérale et Bioinorganique, Faculté de Pharmacie, av. J. B. Clément, 92296 Châtenay-Malabry Cedex, France, and Institut de Recherches Servier, 11 rue des Moulineaux, 92150 Suresnes, France
| | - Georges Morgant
- Laboratoire de Pharmacognosie, Faculté de Pharmacie, bld. Becquerel, 14032 Caen Cedex, France, Laboratoire de Pharmacognosie and Laboratoire de Chimie Physique Minérale et Bioinorganique, Faculté de Pharmacie, av. J. B. Clément, 92296 Châtenay-Malabry Cedex, France, and Institut de Recherches Servier, 11 rue des Moulineaux, 92150 Suresnes, France
| | - Dung Nguyen-Huy
- Laboratoire de Pharmacognosie, Faculté de Pharmacie, bld. Becquerel, 14032 Caen Cedex, France, Laboratoire de Pharmacognosie and Laboratoire de Chimie Physique Minérale et Bioinorganique, Faculté de Pharmacie, av. J. B. Clément, 92296 Châtenay-Malabry Cedex, France, and Institut de Recherches Servier, 11 rue des Moulineaux, 92150 Suresnes, France
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Kuge Y, Nakazawa H, Kometani T, Sugaya T, Mochida K, Tomioka S. A Facile One-Pot Synthesis of Vinpocetine. SYNTHETIC COMMUN 1994. [DOI: 10.1080/00397919408011297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Chapter 1 Eburnamine—Vincamine Alkaloids. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/s0099-9598(08)60059-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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10
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Lewin G, Poisson J, Schaeffer C, Volland J. Transposition du squelette aspidospermane par reaction de Polonovski-Potier. Tetrahedron 1990. [DOI: 10.1016/s0040-4020(01)90074-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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11
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Lewin G, Poisson J, Toffoli P. Nitroindolenines en serie vincadifformine : intermediaires d'acces a la vincamone et a un squelette azahomoaspidospermane. Tetrahedron 1987. [DOI: 10.1016/s0040-4020(01)89982-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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