101
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Okano K, Fujiwara H, Noji T, Fukuyama T, Tokuyama H. Total Synthesis of Dictyodendrin A and B. Angew Chem Int Ed Engl 2010; 49:5925-9. [DOI: 10.1002/anie.201001966] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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102
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Yokoshima S, Tokuyama H, Fukuyama T. Total synthesis of (+)-vinblastine: control of the stereochemistry at C18'. CHEMICAL RECORD (NEW YORK, N.Y.) 2010; 10:101-18. [PMID: 20394103 DOI: 10.1002/tcr.201090001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Vinblastine has been widely known as a prominent agent in cancer chemotherapy, and in order to search for more potent drugs, various analogs have been derived from natural products. However, because modifications of natural products have limited classes of derivatives, an efficient synthetic route toward vinblastine has been required.Herein a stereocontrolled total synthesis of (+)-vinblastine is described. The synthesis of the upper half features a stereoselective construction of the tertiary alcohol through a 1,3-dipolar cycloaddition of nitrile oxide and a Baeyer-Villiger oxidation, a facile indole formation utilizing a radical cyclization of o-alkenylthioanilide, and a macrocyclization of 2-nitrobenzenesulfonamide. The crucial coupling of the upper half with synthetic vindoline was successfully performed to furnish the coupling product in nearly quantitative yield, and subsequent transformations provided (+)-vinblastine.
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103
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Yokoshima S, Tokuyama H, Fukuyama T. Total synthesis of (+)-vinblastine: Control of the stereochemistry at C18′. CHEM REC 2010. [DOI: 10.1002/tcr.200900025] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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104
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Tokuyama H, Fujitani M, Tsuchiya M, Okano K, Takasu K, Ihara M. Total Synthesis of (±)-Lepadiformine A via Radical Translocation-Cyclization Reaction. Synlett 2010. [DOI: 10.1055/s-0029-1219389] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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105
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Okano K, Mitsuhashi N, Tokuyama H. Total synthesis of PDE-II by copper-mediated double amination. Chem Commun (Camb) 2010; 46:2641-3. [DOI: 10.1039/b926965g] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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106
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Okano K, Fukuyama T, Tokuyama H. Total Syntheses of Nitrogen-Containing Cyclic Natural Products Based on Aryl Amination. J SYN ORG CHEM JPN 2010. [DOI: 10.5059/yukigoseikyokaishi.68.1036] [Citation(s) in RCA: 7] [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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107
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Morisaki D, Kim HS, Inoue H, Terauchi H, Kuge S, Naganuma A, Wataya Y, Tokuyama H, Ihara M, Takasu K. Selective accumulation of rhodacyanine in plasmodial mitochondria is related to the growth inhibition of malaria parasites. Chem Sci 2010. [DOI: 10.1039/c0sc00125b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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108
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Cho H, Tokuyama H, Sugimoto K, Iwama Y, Mitsuhashi N, Okano K. Regiospecific Rearrangement of Hydroxylamines to Secondary Amines Using Diisobutylaluminum Hydride. HETEROCYCLES 2010. [DOI: 10.3987/com-10-s(e)126] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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109
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Cho H, Iwama Y, Sugimoto K, Mori S, Tokuyama H. Regioselective Synthesis of Heterocycles Containing Nitrogen Neighboring an Aromatic Ring by Reductive Ring Expansion Using Diisobutylaluminum Hydride and Studies on the Reaction Mechanism. J Org Chem 2009; 75:627-36. [DOI: 10.1021/jo902177p] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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110
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Ueda H, Satoh H, Matsumoto K, Sugimoto K, Fukuyama T, Tokuyama H. Innentitelbild: Total Synthesis of (+)-Haplophytine (Angew. Chem. 41/2009). Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200904021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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111
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Ueda H, Satoh H, Matsumoto K, Sugimoto K, Fukuyama T, Tokuyama H. Total Synthesis of (+)-Haplophytine. Angew Chem Int Ed Engl 2009; 48:7600-3. [DOI: 10.1002/anie.200902192] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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112
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Ueda H, Satoh H, Matsumoto K, Sugimoto K, Fukuyama T, Tokuyama H. Total Synthesis of (+)-Haplophytine. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200902192] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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113
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Ueda H, Satoh H, Matsumoto K, Sugimoto K, Fukuyama T, Tokuyama H. Inside Cover: Total Synthesis of (+)-Haplophytine (Angew. Chem. Int. Ed. 41/2009). Angew Chem Int Ed Engl 2009. [DOI: 10.1002/anie.200904021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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114
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Ueda H, Satoh H, Matsumoto K, Sugimoto K, Fukuyama T, Tokuyama H. Inside Cover: Total Synthesis of (+)-Haplophytine (Angew. Chem. Int. Ed. 41/2009). Angew Chem Int Ed Engl 2009. [DOI: 10.1002/anie.200990215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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115
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Fukuyama T, Kurokawa T, Isomura M, Tokuyama H. Synthesis of Lysergic Acid
Methyl Ester via the Double Cyclization Strategy. Synlett 2009. [DOI: 10.1055/s-0028-1087948] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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116
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Cho H, Tokuyama H, Iwama Y, Sugimoto K, Kwon E. Regiospecific Synthesis of Unsubstituted Basic Skeletons of Heterocycles Containing Nitrogen Neighboring an Aromatic Ring by the Reductive Ring Expansion Reaction Using Diisobutylaluminum Hydride. HETEROCYCLES 2009. [DOI: 10.3987/com-08-11629] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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117
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Fukuyama T, Tokuyama H, Koshiba T, Miyazaki T. Palladium-Catalyzed Coupling of N-Heteroaryl Sulfides with Organozinc Reagents. HETEROCYCLES 2009. [DOI: 10.3987/com-08-s(f)49] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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118
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Takasu K, Takemoto Y, Shindoh N, Tokuyama H. Triflic Imide Catalyzed [3+2] Cycloaddition of Aldimines with α,α-Dimethylallylsilane. HETEROCYCLES 2009. [DOI: 10.3987/com-08-s(f)17] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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119
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Kubo T, Katoh C, Yamada K, Okano K, Tokuyama H, Fukuyama T. A mild inter- and intramolecular amination of aryl halides with a combination of CuI and CsOAc. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.09.042] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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120
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Shindoh N, Tokuyama H, Takemoto Y, Takasu K. Auto-Tandem Catalysis in the Synthesis of Substituted Quinolines from Aldimines and Electron-Rich Olefins: Cascade Povarov−Hydrogen-Transfer Reaction. J Org Chem 2008; 73:7451-6. [DOI: 10.1021/jo8009243] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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121
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Tokuyama H, Okano K, Okuyama KI, Fukuyama T. Mild Debenzylation of Aryl
Benzyl Ether with BCl3 in the Presence of Pentamethylbenzene
as a Non-Lewis-Basic Cation Scavenger. Synlett 2008. [DOI: 10.1055/s-2008-1077980] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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122
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Yamagishi H, Matsumoto K, Iwasaki K, Miyazaki T, Yokoshima S, Tokuyama H, Fukuyama T. Synthesis of eudistomin C and E: improved preparation of the indole unit. Org Lett 2008; 10:2369-72. [PMID: 18498172 DOI: 10.1021/ol800527p] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An improved synthesis of the indole unit, a key intermediate for eudistomin C, was established utilizing Makosza's indole synthesis. A concise total synthesis of eudistomin E was achieved on the basis of the improved synthesis.
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123
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Sakaguchi H, Tokuyama H, Fukuyama T. Total Synthesis of (−)-Kainic Acid via Intramolecular Michael Addition: A Second-Generation Route. Org Lett 2008; 10:1711-4. [DOI: 10.1021/ol800328q] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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124
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125
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Takasu K, Miyakawa Y, Ihara M, Tokuyama H. (2+2) Cycloaddition Reaction of Alkyl Enol Ethers with Acrylates by in Situ Generated Silyl Triflic Imide Catalyst. Chem Pharm Bull (Tokyo) 2008; 56:1205-6. [DOI: 10.1248/cpb.56.1205] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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