101
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Trost BM, Osipov M, Dong G. Palladium-catalyzed dynamic kinetic asymmetric transformations of vinyl aziridines with nitrogen heterocycles: rapid access to biologically active pyrroles and indoles. J Am Chem Soc 2011; 132:15800-7. [PMID: 20949972 DOI: 10.1021/ja1071509] [Citation(s) in RCA: 187] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report that nitrogen heterocycles can serve as competent nucleophiles in the palladium-catalyzed dynamic kinetic asymmetric alkylation of vinyl aziridines. The resulting alkylated products were obtained with high regio-, chemo-, and enantioselectivity. Both substituted 1H-pyrroles and 1H-indoles were successfully employed to give exclusively the branched N-alkylated products. The synthetic utility of this process was demonstrated by applying this method to the preparation of several medicinal chemistry lead compounds and bromopyrrole alkaloids including longamide B, longamide B methyl ester, hanishin, agesamides A and B, and cyclooroidin.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States.
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102
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Zhang S, Zhao J, Zhang WX, Xi Z. One-Pot Synthesis of Pyrrolo[3,2-d]pyridazines and Pyrrole-2,3-diones via Zirconocene-Mediated Four-Component Coupling of Si-Tethered Diyne, Nitriles, and Azide. Org Lett 2011; 13:1626-9. [DOI: 10.1021/ol200038n] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Shaoguang Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Jing Zhao
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Wen-Xiong Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Zhenfeng Xi
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
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103
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Bhandari MR, Yousufuddin M, Lovely CJ. Diversity-oriented approach to pyrrole-imidazole alkaloid frameworks. Org Lett 2011; 13:1382-5. [PMID: 21338082 DOI: 10.1021/ol200067e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An exploration of imidazolylpropargyl amides as linchpin synthons for the construction of a diverse array of heterocyclic frameworks, many of which are related to those found in the oroidin derived alkaloids, is described. One such intermediate has been used in a formal total synthesis of cyclooroidin.
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Affiliation(s)
- Manojkumar R Bhandari
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
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104
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Lin DW, Masuda T, Biskup MB, Nelson JD, Baran PS. Synthesis-guided structure revision of the sarcodonin, sarcoviolin, and hydnellin natural product family. J Org Chem 2011; 76:1013-30. [PMID: 21250718 PMCID: PMC3089814 DOI: 10.1021/jo102228j] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A sweeping structural revision of the sarcodonin natural product family (published structures 1a-13a) is proposed after extensive studies aimed at their chemical synthesis. Key features of revised structure 1b include replacement of the N,N-dioxide moiety with an oxime, ring-opening of the central diketopiperazine, and transposition of the terphenyl wing from the 1β-2β position of 1a to the 2β-3β position of 1b. This structure revision arose from the serendipitous synthesis of a benzodioxane aminal (44) whose structure was unambiguously determined by X-ray crystallography and whose spectral properties bore considerable resemblance to the published data for the sarcodonins. A versatile new method for O-arylation of hydroxamic acids is also reported herein, as well as a manganese(III)-mediated α-oxidation of hydroxamic acids to aminals.
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Affiliation(s)
- David W. Lin
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Takeshi Masuda
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Moritz B. Biskup
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Jonathan D. Nelson
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Phil S. Baran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
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105
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Abstract
In this critical review, the strategic and economic benefits of C-H functionalization logic will be analyzed through the critical lens of total synthesis. In order to illustrate the dramatically simplifying effects this type of logic can potentially have on synthetic planning, we take the reader through a series of case studies in which it has already been successfully applied. In the first section, a chronological look at key historical syntheses will be examined, leading into modern day examples. In the second section, our own experience with applying and executing synthesis with a C-H functionalization "mindset" will be discussed (114 references).
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Affiliation(s)
- Will R Gutekunst
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA
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106
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Feldman KS, Nuriye AY. Extending Pummerer reaction chemistry: application to the assembly of the pentacyclic core of dibromopalau'amine. Org Lett 2011; 12:4532-5. [PMID: 20839833 DOI: 10.1021/ol1018322] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A pentacyclic model system featuring the trans azabicyclo[3.3.0]octane unit of dibromopalau'amine was prepared with complete diastereoselectivity in the polycyclic core from a tricyclic precursor. The key transformations of this sequence include (a) a Pummerer reaction-mediated oxidative bicyclization, and (b) a Wolff rearrangement-based ring contraction to deliver the strained azabicyclo[3.3.0]octane core.
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Affiliation(s)
- Ken S Feldman
- Chemistry Department, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
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107
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Kwon SH, Lee HJ, Cho CW. Concise Asymmetric Formal Synthesis of Pyrrolopiperazinone Natural Products by Tandem Cross Metathesis/Intramolecular Aza-Conjugate Addition. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.1.315] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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108
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Kafle B, Bhattarai BR, Cho HJ. Barbituric Acid Derivatives as Protein Tyrosine Phosphatase Inhibitors. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.1.31] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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109
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110
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He Y, Krishnamoorthy P, Lima HM, Chen Y, Wu H, Sivappa R, Dias HVR, Lovely CJ. Intramolecular Diels–Alder chemistry of 4-vinylimidazoles. Org Biomol Chem 2011; 9:2685-701. [DOI: 10.1039/c0ob00657b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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111
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112
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Seiple IB, Su S, Rodriguez RA, Gianatassio R, Fujiwara Y, Sobel AL, Baran PS. Direct C-H arylation of electron-deficient heterocycles with arylboronic acids. J Am Chem Soc 2010; 132:13194-6. [PMID: 20812741 DOI: 10.1021/ja1066459] [Citation(s) in RCA: 476] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A direct arylation of a variety of electron-deficient heterocycles with arylboronic acids has been developed. This new reaction proceeds readily at room temperature using inexpensive reagents: catalytic silver(I) nitrate in the presence of persulfate co-oxidant. The scope with respect to heterocycle and boronic acid coupling partner is broad, and sensitive functional groups are tolerated. This method allows for rapid access to a variety of arylated heterocycles that would be more difficult to access with traditional methods.
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Affiliation(s)
- Ian B Seiple
- Department of Chemistry and Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
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113
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Namba K, Inai M, Sundermeier U, Greshock TJ, Williams RM. Synthetic Studies on Palau'amine. Construction of the Cyclopentane Core via an Asymmetric 1,3-Dipolar Cycloaddition. Tetrahedron Lett 2010; 51:6557-6559. [PMID: 21286237 PMCID: PMC3030269 DOI: 10.1016/j.tetlet.2010.10.037] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The cyclopentane core of palau'amine has been constructed in optically pure form through the use of an asymmetric azomethine ylid [1,3]-dipolar cycloaddition reaction.
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Affiliation(s)
- Kosuke Namba
- Department of Chemistry, Colorado State University, 1301 Center Avenue, Fort Collins, CO 80523, USA
| | - Makto Inai
- Department of Chemistry, Colorado State University, 1301 Center Avenue, Fort Collins, CO 80523, USA
| | - Uta Sundermeier
- Department of Chemistry, Colorado State University, 1301 Center Avenue, Fort Collins, CO 80523, USA
| | - Thomas J. Greshock
- Department of Chemistry, Colorado State University, 1301 Center Avenue, Fort Collins, CO 80523, USA
| | - Robert M. Williams
- Department of Chemistry, Colorado State University, 1301 Center Avenue, Fort Collins, CO 80523, USA
- University of Colorado Cancer Center, Aurora, CO 80045, USA
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114
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Chinigo GM, Breder A, Carreira EM. Ugi-4-Component Reaction Enabling Rapid Access to the Core Fragment of Massadine. Org Lett 2010; 13:78-81. [DOI: 10.1021/ol102577q] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gary M. Chinigo
- Laboratorium für Organische Chemie, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Alexander Breder
- Laboratorium für Organische Chemie, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische Chemie, ETH Zürich, CH-8093 Zürich, Switzerland
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115
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Lindel T, Jacquot DE, Zöllinger M, Kinnel RB, McHugh S, Köck M. Study on the absolute configuration of (−)-palau’amine. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.09.148] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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116
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Reinscheid UM, Köck M, Cychon C, Schmidts V, Thiele CM, Griesinger C. The Absolute Configuration of Dibromopalau'amine. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001392] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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117
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Ma Z, Lu J, Wang X, Chen C. Revisiting the Kinnel-Scheuer hypothesis for the biosynthesis of palau'amine. Chem Commun (Camb) 2010; 47:427-9. [PMID: 20848010 DOI: 10.1039/c0cc02214d] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We propose herein an alternative biosynthetic pathway for palau'amine in order to resolve the stereochemical issue from the original Kinnel-Scheuer hypothesis. Furthermore, we use this revised hypothesis as a guide toward the laboratory synthesis of palau'amine.
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Affiliation(s)
- Zhiqiang Ma
- Department of Biochemistry, UT Southwestern Medical Center at Dallas, 5323 Harry Hines Boulevard, Dallas, TX 75390-9038, USA
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118
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Bae JY, Lee HJ, Youn SH, Kwon SH, Cho CW. Organocatalytic Asymmetric Synthesis of Chiral Pyrrolizines by Cascade Conjugate Addition−Aldol Reactions. Org Lett 2010; 12:4352-5. [DOI: 10.1021/ol101811c] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ju-Yeon Bae
- Department of Chemistry, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Hyo-Jun Lee
- Department of Chemistry, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Seok-Ho Youn
- Department of Chemistry, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Su-Hyun Kwon
- Department of Chemistry, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Chang-Woo Cho
- Department of Chemistry, Kyungpook National University, Daegu 702-701, Republic of Korea
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119
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Santana AG, Francisco CG, Suárez E, González CC. Synthesis of Guanidines From Azides: A General and Straightforward Methodology In Carbohydrate Chemistry. J Org Chem 2010; 75:5371-4. [DOI: 10.1021/jo100876r] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrés G. Santana
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez, 3, 38206 La Laguna Tenerife, Spain
| | - Cosme G. Francisco
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez, 3, 38206 La Laguna Tenerife, Spain
| | - Ernesto Suárez
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez, 3, 38206 La Laguna Tenerife, Spain
| | - Concepción C. González
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez, 3, 38206 La Laguna Tenerife, Spain
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120
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Unprecedented Stylissazoles A-C from Stylissa carteri: Another Dimension for Marine Pyrrole-2-aminoimidazole Metabolite Diversity. Angew Chem Int Ed Engl 2010; 49:4775-9. [DOI: 10.1002/anie.201000444] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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121
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Wang YG, Morinaka BI, Reyes JCP, Wolff JH, Romo D, Molinski TF. Synthesis of 7-(15)N-Oroidin and evaluation of utility for biosynthetic studies of pyrrole-imidazole alkaloids by microscale (1)H-(15)N HSQC and FTMS. JOURNAL OF NATURAL PRODUCTS 2010; 73:428-34. [PMID: 20095632 PMCID: PMC3544367 DOI: 10.1021/np900638e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Numerous marine-derived pyrrole-imidazole alkaloids (PIAs), ostensibly derived from the simple precursor oroidin, 1a, have been reported and have garnered intense synthetic interest due to their complex structures and in some cases biological activity; however very little is known regarding their biosynthesis. We describe a concise synthesis of 7-(15)N-oroidin (1d) from urocanic acid and a direct method for measurement of (15)N incorporation by pulse labeling and analysis by 1D (1)H-(15)N HSQC NMR and FTMS. Using a mock pulse labeling experiment, we estimate the limit of detection (LOD) for incorporation of newly biosynthesized PIA by 1D (1)H-(15)N HSQC to be 0.96 microg equivalent of (15)N-oroidin (2.4 nmole) in a background of 1500 microg of unlabeled oroidin (about 1 part per 1600). 7-(15)N-Oroidin will find utility in biosynthetic feeding experiments with live sponges to provide direct information to clarify the pathways leading to more complex pyrrole-imidazole alkaloids.
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Affiliation(s)
| | | | | | | | - Daniel Romo
- To whom correspondence should be addressed: Tel: +1 (858) 534-7115. Fax: +1 (858) 822-0386. . Tel: +1 (979) 845-9571. Fax: +1 (979) 862-4880.
| | - Tadeusz F. Molinski
- To whom correspondence should be addressed: Tel: +1 (858) 534-7115. Fax: +1 (858) 822-0386. . Tel: +1 (979) 845-9571. Fax: +1 (979) 862-4880.
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122
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123
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Namba K. Development of Practical Synthetic Method toward Mechanistic Elucidation of Biologically Active Natural Products. J SYN ORG CHEM JPN 2010. [DOI: 10.5059/yukigoseikyokaishi.68.1249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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124
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Asakawa T. The Essence of the Strategy for "Total Synthesis of Palau'amine". J SYN ORG CHEM JPN 2010. [DOI: 10.5059/yukigoseikyokaishi.68.1069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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125
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Young IS, Thornton PD, Thompson A. Synthesis of natural products containing the pyrrolic ring. Nat Prod Rep 2010; 27:1801-39. [DOI: 10.1039/c0np00014k] [Citation(s) in RCA: 249] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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