101
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Liu Y, Xue J, Sun Z, Liu D, Xing Y, Li Y. Substituent-Controlled Selective Synthesis of Spirooxindoles and Oxazolyloxindoles via Two Tandem Reactions. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500290] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yun Liu
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; 222 Tianshui South Rd. Lanzhou 730000, Gansu P. R. China
| | - Jijun Xue
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; 222 Tianshui South Rd. Lanzhou 730000, Gansu P. R. China
| | - Zhou Sun
- College of Chemical Science and Engineering; Qingdao University; 308 Ningxia Rd. Qingdao 266000, Shandong P. R. China
| | - Dongxue Liu
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; 222 Tianshui South Rd. Lanzhou 730000, Gansu P. R. China
| | - Yacheng Xing
- College of Chemical Science and Engineering; Qingdao University; 308 Ningxia Rd. Qingdao 266000, Shandong P. R. China
| | - Ying Li
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; 222 Tianshui South Rd. Lanzhou 730000, Gansu P. R. China
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102
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Pavlovska TL, Redkin RG, Lipson VV, Atamanuk DV. Molecular diversity of spirooxindoles. Synthesis and biological activity. Mol Divers 2015; 20:299-344. [PMID: 26419598 DOI: 10.1007/s11030-015-9629-8] [Citation(s) in RCA: 241] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 07/29/2015] [Indexed: 11/30/2022]
Abstract
Spirooxindoles are important synthetic targets possessing extended biological activity and drug discovery applications. This review focuses on the various strategies for the enantioselective synthesis of spirocyclic oxindoles relying on reports over the past decade and from earlier work. The spirooxindoles in this review are separated into three structural classes, and then further categorized into the method type from which the spirocycle is generated.
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Affiliation(s)
- Tetyana L Pavlovska
- State Scientific Institution, "Institute for Single Crystals" of National Academy of Sciences of Ukraine, Lenina Pr., 60, Kharkov, 61002, Ukraine.
| | - Ruslan Gr Redkin
- National University of Pharmacy, Pushkinska Str., 53, Kharkov, 61002, Ukraine.
| | - Victoria V Lipson
- State Scientific Institution, "Institute for Single Crystals" of National Academy of Sciences of Ukraine, Lenina Pr., 60, Kharkov, 61002, Ukraine. .,State Institution "V.Ya. Danilevsky Institute of Endocrine Pathology Problems", Academy of Medical Sciences of Ukraine, Artema Str., 10, Kharkov, 61002, Ukraine.
| | - Dmytro V Atamanuk
- Dmytro Atamanyuk Mutabilis, 102 Av. Gaston Roussel, Romainville, 93230, France.
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103
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Abstract
This review covers the literature published in 2013 for marine natural products (MNPs), with 982 citations (644 for the period January to December 2013) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1163 for 2013), together with the relevant biological activities, source organisms and country of origin. Reviews, biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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104
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Tian Y, Tian L, He X, Li C, Jia X, Li J. Indium(III) Chloride-Catalyzed Isocyanide Insertion Reaction to Construct Complex Spirooxindole. Org Lett 2015; 17:4874-7. [DOI: 10.1021/acs.orglett.5b02432] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yaming Tian
- Department
of Chemistry, Innovative Drug Research Center, Shanghai University, 99 Shangda Road, Shanghai 200444, P. R. China
| | - Lumin Tian
- Department
of Chemistry, Innovative Drug Research Center, Shanghai University, 99 Shangda Road, Shanghai 200444, P. R. China
| | - Xiang He
- Department
of Chemistry, Innovative Drug Research Center, Shanghai University, 99 Shangda Road, Shanghai 200444, P. R. China
| | - Chunju Li
- Department
of Chemistry, Innovative Drug Research Center, Shanghai University, 99 Shangda Road, Shanghai 200444, P. R. China
| | - Xueshun Jia
- Department
of Chemistry, Innovative Drug Research Center, Shanghai University, 99 Shangda Road, Shanghai 200444, P. R. China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jian Li
- Department
of Chemistry, Innovative Drug Research Center, Shanghai University, 99 Shangda Road, Shanghai 200444, P. R. China
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105
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Malini K, Periyaraja S, Shanmugam P. Morita–Baylis–Hillman reaction of pyridine-2, 3, and 4-carboxaldehydes and N-methyl isatin with mono and diacrylates: synthesis of highly functionalized pyridine ligands and isatin derivatives. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.07.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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106
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Hwang IH, Swenson DC, Gloer JB, Wicklow DT. Pestaloporonins: Caryophyllene-Derived Sesquiterpenoids from a Fungicolous Isolate of Pestalotiopsis sp. Org Lett 2015; 17:4284-7. [DOI: 10.1021/acs.orglett.5b02080] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- In Hyun Hwang
- Department
of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Dale C. Swenson
- Department
of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - James B. Gloer
- Department
of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Donald T. Wicklow
- Bacterial Foodborne Pathogens & Mycology Research Unit, Agricultural Research Service, National Center for Agricultural Utilization Research, USDA, Peoria, Illinois 61604, United States
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107
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Zheng H, Liu X, Xu C, Xia Y, Lin L, Feng X. Regio- and Enantioselective Aza-Diels-Alder Reactions of 3-Vinylindoles: A Concise Synthesis of the Antimalarial Spiroindolone NITD609. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505717] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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108
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Zheng H, Liu X, Xu C, Xia Y, Lin L, Feng X. Regio- and Enantioselective Aza-Diels-Alder Reactions of 3-Vinylindoles: A Concise Synthesis of the Antimalarial Spiroindolone NITD609. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/anie.201505717] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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109
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Sherman DH, Tsukamoto S, Williams RM. ORGANIC SYNTHESIS. Comment on "Asymmetric syntheses of sceptrin and massadine and evidence for biosynthetic enantiodivergence". Science 2015; 349:149. [PMID: 26160938 DOI: 10.1126/science.aaa9349] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 05/05/2015] [Indexed: 11/02/2022]
Abstract
Ma et al. (Reports, 10 October 2014, p. 219) report asymmetric syntheses of sceptrin and massadine and, through a stereochemical reassignment, claim to "uncover enantiodivergence as a new biosynthetic paradigm for natural products." We challenge and clarify this claim with relevant examples from the literature of this well-known phenomenon of enantiodivergent congener biosynthesis within the same producing organism.
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Affiliation(s)
- David H Sherman
- Life Sciences Institute and Departments of Medicinal Chemistry, Microbiology and Immunology, and Chemistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - Sachiko Tsukamoto
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
| | - Robert M Williams
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA. The University of Colorado Cancer Center, Aurora, CO 80045, USA.
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110
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Wu MY, He WW, Liu XY, Tan B. Asymmetric Construction of Spirooxindoles by Organocatalytic Multicomponent Reactions Using Diazooxindoles. Angew Chem Int Ed Engl 2015; 54:9409-13. [DOI: 10.1002/anie.201504640] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Indexed: 12/15/2022]
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111
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Wu MY, He WW, Liu XY, Tan B. Asymmetric Construction of Spirooxindoles by Organocatalytic Multicomponent Reactions Using Diazooxindoles. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504640] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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112
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Monari M, Montroni E, Nitti A, Lombardo M, Trombini C, Quintavalla A. Highly stereoselective [4+2] and [3+2] spiroannulations of 2-(2-oxoindolin-3-ylidene)acetic esters catalyzed by bifunctional thioureas. Chemistry 2015; 21:11038-49. [PMID: 26032428 DOI: 10.1002/chem.201500676] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Indexed: 11/11/2022]
Abstract
A new Michael-Michael cascade reaction between 2-(2-oxoindolin-3-ylidene)acetic esters 1 and nitroenoates 2, catalyzed by bifunctional thioureas, is investigated. The combination of the two Michael reactions results in a novel and facile [4+2] or [3+2] spiroannulation process, which is characterized by the following features: 1) two carbon-carbon bonds and four stereocenters, including a quaternary spiro carbon, are formed under mild conditions; 2) an unprecedented and stereochemically defined substitution pattern on the spirocarbocyclic unit is obtained; 3) the double-bond configuration of the donor-acceptor nitroenoate 2 determines the absolute configuration of the spiro center, whereas the remaining stereocenters are formed under control of the catalyst. The effect on the final stereochemical outcome of structural variations of each starting material, catalyst, and experimental conditions is analyzed in detail. In particular, the use of specifically designed chiral nitroenoates enables diverse polyfunctional spirocyclohexane derivatives containing six consecutive stereogenic centers to be constructed. To our knowledge, this is the first asymmetric organocatalytic strategy enabling both five- and six-membered β-nitro spirocarbocyclic oxindoles.
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Affiliation(s)
- Magda Monari
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Elisa Montroni
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Andrea Nitti
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Marco Lombardo
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Claudio Trombini
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Arianna Quintavalla
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy).
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113
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DMAP-catalyzed Diels–Alder reaction of 3-hydroxy-2-pyrone and methyleneindolinones for the synthesis of spirocyclic oxindoles. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.04.032] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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114
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Lee C, Sohn JH, Jang JH, Ahn JS, Oh H, Baltrusaitis J, Hwang IH, Gloer JB. Cycloexpansamines A and B: spiroindolinone alkaloids from a marine isolate of Penicillium sp. (SF-5292). J Antibiot (Tokyo) 2015; 68:715-8. [DOI: 10.1038/ja.2015.56] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Revised: 04/03/2015] [Accepted: 04/13/2015] [Indexed: 01/11/2023]
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115
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Xie D, Yang L, Lin Y, Zhang Z, Chen D, Zeng X, Zhong G. Rapid Access to Spirocylic Oxindoles: Application of Asymmetric N-Heterocyclic Carbene-Catalyzed [3 + 3] Cycloaddition of Imines to Oxindole-Derived Enals. Org Lett 2015; 17:2318-21. [DOI: 10.1021/acs.orglett.5b00726] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Danbo Xie
- College of Materials, Chemistry & Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Limin Yang
- College of Materials, Chemistry & Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Youqiang Lin
- College of Materials, Chemistry & Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Zhiming Zhang
- College of Materials, Chemistry & Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Dongdong Chen
- College of Materials, Chemistry & Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Xiaofei Zeng
- College of Materials, Chemistry & Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Guofu Zhong
- College of Materials, Chemistry & Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
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116
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Three unusual indole diketopiperazine alkaloids from a terrestrial-derived endophytic fungus, Aspergillus sp. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.04.058] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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117
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Xu C, Deiana L, Afewerki S, Incerti-Pradillos C, Córdova O, Guo P, Córdova A, Hedin N. The Use of Porous Palladium(II)-polyimine in Cooperatively- catalyzed Highly Enantioselective Cascade Transformations. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500100] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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118
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Versicolols A and B, two new prenylated isocoumarins from endophytic fungus Aspergillus versicolor and their cytotoxic activity. Arch Pharm Res 2015; 40:32-36. [DOI: 10.1007/s12272-015-0588-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Accepted: 02/17/2015] [Indexed: 02/03/2023]
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119
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Zhang P, Li XM, Wang JN, Li X, Wang BG. Prenylated indole alkaloids from the marine-derived fungus Paecilomyces variotii. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2014.11.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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120
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Afewerki S, Ma G, Ibrahem I, Liu L, Sun J, Córdova A. Highly Enantioselective Control of Dynamic Cascade Transformations by Dual Catalysis: Asymmetric Synthesis of Polysubstituted Spirocyclic Oxindoles. ACS Catal 2015. [DOI: 10.1021/cs501975u] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Samson Afewerki
- Department
of Natural Sciences, Mid Sweden University, SE-851 70 Sundsvall, Sweden
| | - Guangning Ma
- Department
of Natural Sciences, Mid Sweden University, SE-851 70 Sundsvall, Sweden
| | - Ismail Ibrahem
- Department
of Natural Sciences, Mid Sweden University, SE-851 70 Sundsvall, Sweden
| | | | | | - Armando Córdova
- Department
of Natural Sciences, Mid Sweden University, SE-851 70 Sundsvall, Sweden
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121
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Kato H, Nakahara T, Sugimoto K, Matsuo K, Kagiyama I, Frisvad JC, Sherman DH, Williams RM, Tsukamoto S. Isolation of notoamide S and enantiomeric 6-epi-stephacidin A from the fungus Aspergillus amoenus: biogenetic implications. Org Lett 2015; 17:700-3. [PMID: 25615822 DOI: 10.1021/ol5037198] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Notoamide S has been hypothesized to be a key biosynthetic intermediate for characteristic metabolites stephacidin A, notoamide B, and versicolamide B in Aspergillus sp. but has not yet been isolated. The isolation of notoamide S and an enantiomeric mixture of 6-epi-stephacidin A enriched with the (-)-isomer from Aspergillus amoenus is reported. The presence of (+)-versicolamide B suggests that the fungus possesses only the oxidase, which converts (+)-6-epi-stephacidin A into (+)-Versicolamide B, but not for (-)-6-epi-Stephacidin A.
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Affiliation(s)
- Hikaru Kato
- Graduate School of Pharmaceutical Sciences, Kumamoto University , 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
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122
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Shen GL, Sun J, Yan CG. Construction of dispirocyclohexyl-3,3′-bisoxindole and dispirocyclopentyl-3,3′-bisoxindole via domino cycloaddition reactions of N-benzylbenzimidazolium salts with 2-(2-oxoindolin-3-ylidene)acetates. RSC Adv 2015. [DOI: 10.1039/c4ra13760d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Two kinds of spirocyclic oxindoles were selectively synthesized from cycloaddition of N-benzyl-N-phenacylbenzimidazolium salts with two molecules of 2-(2-oxoindolin-3-ylidene)acetates.
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Affiliation(s)
- Guo-Liang Shen
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Jing Sun
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Chao-Guo Yan
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
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123
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Suman K, Thennarasu S. Base catalysed domino and self-domino Michael–Aldol reactions: one-pot synthesis of dispirocyclopentaneoxindoles containing multiple chiral stereocenters. RSC Adv 2015. [DOI: 10.1039/c5ra00283d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A method for construction of three classes of densely functionalized dispirocyclopentaneoxindoles with multiple chiral stereocenters is developed using base promoted self-domino and domino reactions with/without the presence of nucleophilic solvents.
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Affiliation(s)
- Koorathota Suman
- Organic Chemistry Laboratory
- CSIR-Central Leather Research Institute
- Chennai-600020
- India
| | - Sathiah Thennarasu
- Organic Chemistry Laboratory
- CSIR-Central Leather Research Institute
- Chennai-600020
- India
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124
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Kato H, Nakahara T, Yamaguchi M, Kagiyama I, Finefield JM, Sunderhaus JD, Sherman DH, Williams RM, Tsukamoto S. Bioconversion of 6- epi-Notoamide T Produces Metabolites of Unprecedented Structures in a Marine-derived Aspergillus sp. Tetrahedron Lett 2015; 56:247-251. [PMID: 25767298 DOI: 10.1016/j.tetlet.2014.11.083] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We previously described the bioconversion of Notoamide T into (+)-Stephacidin A and (-)-Notoamide B, which suggested that Versicolamide B (8) is biosynthesized from 6-epi-Notoamide T (10) via 6-epi-Stephacidin A. Here we report that [13C]2-10 was incorporated into isotopically enriched 8 and seven new metabolites, which were not produced under normal culture conditions. The results suggest that the addition of excess precursor activated the expression of dormant tailoring genes giving rise to these structurally unprecedented metabolites.
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Affiliation(s)
- Hikaru Kato
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
| | - Takashi Nakahara
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
| | - Michitaka Yamaguchi
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
| | - Ippei Kagiyama
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
| | - Jennifer M Finefield
- Department of Chemistry, Colorado State University, 1301 Center Avenue, Fort Collins, Colorado 80523, USA
| | - James D Sunderhaus
- Department of Chemistry, Colorado State University, 1301 Center Avenue, Fort Collins, Colorado 80523, USA
| | - David H Sherman
- Life Sciences Institute and Department of Medicinal Chemistry, The University of Michigan, 210 Washtenaw Avenue, Ann Arbor, Michigan 48109-2216, USA
| | - Robert M Williams
- Department of Chemistry, Colorado State University, 1301 Center Avenue, Fort Collins, Colorado 80523, USA ; University of Colorado Cancer Center, Aurora, Colorado 80045, USA
| | - Sachiko Tsukamoto
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
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125
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Xu S, Li C, Jia X, Li J. AlCl3-Promoted Selective Michael Addition with Allenoate and Methyleneindolinone: Synthesis of Spirocyclic Oxindole by Using Allenoate as a Four-Carbon Component Building Block. J Org Chem 2014; 79:11161-9. [DOI: 10.1021/jo502209f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Shibo Xu
- Department
of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
| | - Chunju Li
- Department
of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
| | - Xueshun Jia
- Department
of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
- CAS
Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling
Road, Shanghai 200032, China
| | - Jian Li
- Department
of Chemistry, Innovative Drug Research Center, Shanghai University, Shanghai 200444, China
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126
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Trost BM, Bringley DA, Zhang T, Cramer N. Rapid access to spirocyclic oxindole alkaloids: application of the asymmetric palladium-catalyzed [3 + 2] trimethylenemethane cycloaddition. J Am Chem Soc 2014; 135:16720-35. [PMID: 24083654 DOI: 10.1021/ja409013m] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The marcfortines are complex secondary metabolites that show potent anthelmintic activity and are characterized by the presence of a bicyclo[2.2.2]diazaoctane fused to a spirooxindole. Herein, we report the synthesis of two members of this family. The synthesis of marcfortine B utilizes a carboxylative TMM cycloaddition to establish the spirocyclic core, followed by an intramolecular Michael addition and oxidative radical cyclization to access the strained bicyclic ring system. In addition, the first asymmetric synthesis of (−)-marcfortine C is described. The key step involves a cyano-substituted TMM cycloaddition, which proceeds in nearly quantitative yield with high diastereo- and enantioselectivity. The resulting chiral center was used to establish all remaining stereocenters in the natural product.
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127
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Cai S, King JB, Du L, Powell DR, Cichewicz RH. Bioactive sulfur-containing sulochrin dimers and other metabolites from an Alternaria sp. isolate from a Hawaiian soil sample. JOURNAL OF NATURAL PRODUCTS 2014; 77:2280-7. [PMID: 25265160 PMCID: PMC4208674 DOI: 10.1021/np5005449] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Polluxochrin (1) and dioschrin (2), two new dimers of sulochrin linked by thioether bonds, were purified from an Alternaria sp. isolate obtained from a Hawaiian soil sample. The structures of the two metabolites were established by NMR, mass spectrometry data, and X-ray analysis. Metabolite 1 was determined to be susceptible to intramolecular cyclization under aqueous conditions, resulting in the generation of 2 as well as another dimeric compound, castochrin (3). An additional nine new metabolites were also obtained, including four new pyrenochaetic acid derivatives (8-11), one new asterric acid analogue (13), and four new secalonic acid analogues (14-17). Bioassay analysis of these compounds revealed 1-3 displayed antimicrobial and weak cytotoxic activities.
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Affiliation(s)
- Shengxin Cai
- Natural Products Discovery Group, Institute for Natural
Products
Applications and Research Technologies, and Department of Chemistry and Biochemistry,
Stephenson Life Sciences Research Center, 101 Stephenson Parkway, University of Oklahoma, Norman, Oklahoma 73019-5251, United States
| | - Jarrod B. King
- Natural Products Discovery Group, Institute for Natural
Products
Applications and Research Technologies, and Department of Chemistry and Biochemistry,
Stephenson Life Sciences Research Center, 101 Stephenson Parkway, University of Oklahoma, Norman, Oklahoma 73019-5251, United States
| | - Lin Du
- Natural Products Discovery Group, Institute for Natural
Products
Applications and Research Technologies, and Department of Chemistry and Biochemistry,
Stephenson Life Sciences Research Center, 101 Stephenson Parkway, University of Oklahoma, Norman, Oklahoma 73019-5251, United States
| | - Douglas R. Powell
- Natural Products Discovery Group, Institute for Natural
Products
Applications and Research Technologies, and Department of Chemistry and Biochemistry,
Stephenson Life Sciences Research Center, 101 Stephenson Parkway, University of Oklahoma, Norman, Oklahoma 73019-5251, United States
| | - Robert H. Cichewicz
- Natural Products Discovery Group, Institute for Natural
Products
Applications and Research Technologies, and Department of Chemistry and Biochemistry,
Stephenson Life Sciences Research Center, 101 Stephenson Parkway, University of Oklahoma, Norman, Oklahoma 73019-5251, United States
- E-mail: . Tel: 405-325-6969. Fax: 405-325-6111
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128
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Bian Z, Marvin CC, Pettersson M, Martin SF. Enantioselective total syntheses of citrinadins A and B. Stereochemical revision of their assigned structures. J Am Chem Soc 2014; 136:14184-92. [PMID: 25211501 PMCID: PMC4195386 DOI: 10.1021/ja5074646] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Indexed: 11/30/2022]
Abstract
The concise, enantioselective total syntheses of (-)-citrinadin A and (+)-citrinadin B in a total of only 20 and 21 steps, respectively, from commercially available starting materials are described. Our strategy, which minimizes refunctionalization and protection/deprotection operations, features the highly diastereoselective, vinylogous Mannich addition of a dienolate to a chiral pyridinium salt to set the first chiral center. The absolute stereochemistry of this key center was then relayed by a sequence of substrate-controlled reactions, including a highly stereoselective epoxidation/ring opening sequence and an oxidative rearrangement of an indole to furnish a spirooxindole to establish the remaining stereocenters in the pentacyclic core of the citrinadins. An early stage intermediate in the synthesis of (-)-citrinadin A was deoxygenated to generate a dehydroxy compound that was elaborated into (+)-citrinadin B by a sequence of reaction identical to those used to prepare (-)-citrinadin A. These concise syntheses of (-)-citrinadin A and (+)-citrinadin B led to a revision of their stereochemical structures.
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Affiliation(s)
- Zhiguo Bian
- Department of Chemistry, The
University of Texas, Austin, Texas 78712, United States
| | | | | | - Stephen F. Martin
- Department of Chemistry, The
University of Texas, Austin, Texas 78712, United States
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129
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Abstract
This review provides a summary of recent research advances in elucidating the biosynthesis of fungal indole alkaloids. The different strategies used to incorporate and derivatize the indole/indoline moieties in various families of fungal indole alkaloids will be discussed, including tryptophan-containing nonribosomal peptides, polyketide-nonribosomal peptide hybrids, and alkaloids derived from other indole building blocks. This review also includes a discussion regarding the downstream modifications that generate chemical and structural diversity among indole alkaloids.
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Affiliation(s)
- Wei Xu
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, CA 90096, USA.
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130
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Xie YJ, Sun J, Yan CG. Unprecedented formation of 2-oxaspiro[bicyclo[2.2.1]heptane-6,3′-indoline] derivatives from reaction of 3-phenacyalideneoxindole with malononitrile or ethyl cyanoacetate. RSC Adv 2014. [DOI: 10.1039/c4ra06272h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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131
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Mei LY, Tang XY, Shi M. One-Pot Tandem Diastereoselective and Enantioselective Synthesis of Functionalized Oxindole-Fused Spiropyrazolidine Frameworks. Chemistry 2014; 20:13136-42. [DOI: 10.1002/chem.201403990] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Indexed: 01/12/2023]
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132
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Jatoi WB, Puget P, Jatoi AH, Shar GQ. Synthesis of Spirooxindoles: Compounds of Wide Therapeutical Applications. Pharm Chem J 2014. [DOI: 10.1007/s11094-014-1096-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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133
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Hu XL, Bian XQ, Wu X, Li JY, Hua HM, Pei YH, Han AH, Bai J. Penioxalamine A, a novel prenylated spiro-oxindole alkaloid from Penicillium oxalicum TW01-1. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.05.104] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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134
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Zheng H, He P, Liu Y, Zhang Y, Liu X, Lin L, Feng X. Efficient synthesis of carbazolespirooxindole skeletons via asymmetric Diels–Alder reaction of 3-vinylindoles and methyleneindolinones. Chem Commun (Camb) 2014; 50:8794-6. [DOI: 10.1039/c4cc03135k] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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135
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Halimehjani AZ, Namboothiri INN, Hooshmand SE. Nitroalkenes in the synthesis of carbocyclic compounds. RSC Adv 2014. [DOI: 10.1039/c4ra04069d] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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136
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Xie YJ, Sun J, Yan CG. Domino reactions of vinyl malononitriles with 3-phenacylideneoxindoles for efficient synthesis of functionalized spirocyclic oxindoles. ACS COMBINATORIAL SCIENCE 2014; 16:271-80. [PMID: 24555800 DOI: 10.1021/co500006c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The reactions of vinyl malononitriles with 3-phenacylideneoxindoles in ethanol in the presence of DBU as base resulted in the functionalized spirocyclic oxindoles through the domino Michael addition and intramolecular nucleophilic addition to cyano group. On the other hand, the similar reaction in the presence of piperidine as base afforded the simple Michael addition products in good yields. The stereochemistry of the spirooxindoles was established with (1)H NMR data and single crystal structures.
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Affiliation(s)
- Ya-Jing Xie
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Jing Sun
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chao-Guo Yan
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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137
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138
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Chen R, Fan X, Gong J, He Z. Lewis-Base-Catalyzed Annulations of Nitroallylic Acetates asC3Synthons with Electron-Deficient Alkenes. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201402059] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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139
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Su S, Li C, Jia X, Li J. Isocyanide-Based Multicomponent Reactions: Concise Synthesis of Spirocyclic Oxindoles with Molecular Complexity by Using a [1,5]-Hydrogen Shift as the Key Step. Chemistry 2014; 20:5905-9. [DOI: 10.1002/chem.201402576] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Indexed: 12/26/2022]
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140
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Quinine-catalyzed asymmetric domino Michael-cyclization reaction for the synthesis of spirocyclic oxindoles bearing two spiro quaternary centers and three consecutive stereocenters. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.01.036] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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141
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Huang Y, Zheng C, Chai Z, Zhao G. Synthesis of Spiro[chroman/tetrahydrothiophene-3,3′-oxindole] ScaffoldsviaHeteroatom-Michael-Michael Reactions: Easily Controlled EnantioselectivityviaBifunctional Catalysts. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300833] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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142
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Rao VUB, Jadhav AP, Garad D, Singh RP. Asymmetric Vinylogous Mannich Reaction of Silyloxy Furans with N-tert-Butanesulfinyl Ketimines. Org Lett 2014; 16:648-51. [DOI: 10.1021/ol4037117] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- V. U. Bhaskara Rao
- Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, India 411008
| | - Amol P. Jadhav
- Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, India 411008
| | - Dnyaneshwar Garad
- Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, India 411008
| | - Ravi P. Singh
- Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, India 411008
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143
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Sun W, Hong L, Zhu G, Wang Z, Wei X, Ni J, Wang R. An Organocatalytic Michael–Michael Cascade for the Enantioselective Construction of Spirocyclopentane Bioxindoles: Control of Four Contiguous Stereocenters. Org Lett 2014; 16:544-7. [DOI: 10.1021/ol4034226] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wangsheng Sun
- School of Life Sciences, Key Laboratory of Preclinical Study for
New Drugs of Gansu Province, and School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Liang Hong
- School of Life Sciences, Key Laboratory of Preclinical Study for
New Drugs of Gansu Province, and School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Gongming Zhu
- School of Life Sciences, Key Laboratory of Preclinical Study for
New Drugs of Gansu Province, and School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Zilong Wang
- School of Life Sciences, Key Laboratory of Preclinical Study for
New Drugs of Gansu Province, and School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Xiaojin Wei
- School of Life Sciences, Key Laboratory of Preclinical Study for
New Drugs of Gansu Province, and School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Jingman Ni
- School of Life Sciences, Key Laboratory of Preclinical Study for
New Drugs of Gansu Province, and School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Rui Wang
- School of Life Sciences, Key Laboratory of Preclinical Study for
New Drugs of Gansu Province, and School of Pharmacy, Lanzhou University, Lanzhou 730000, China
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144
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Su S, Wang N, Li C, Song B, Jia X, Li J. Tandem Diels-Alder/Coupling Reaction Involving Two Arynes: Highly Stereoselective Synthesis of Dihydronaphtho-Fused Oxindole. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201300247] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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145
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Yu C, Zheng W, Zhan J, Sun Y, Miao Z. Highly regio- and diastereoselective construction of spirocyclopenteneoxindole phosphonates through a phosphine-catalyzed [3 + 2] annulation reaction. RSC Adv 2014. [DOI: 10.1039/c4ra12997k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A phosphine-catalyzed [3 + 2] annulation of MBH phosphonates with isatylidene malononitriles is developed, which represents a novel approach to highly regioselective and diastereoselective synthesis of spirocyclopenteneoxindole phosphonates.
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Affiliation(s)
- Chengbin Yu
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071, People's Republic of China
| | - Weiping Zheng
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071, People's Republic of China
| | - Junchen Zhan
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071, People's Republic of China
| | - Yuchao Sun
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071, People's Republic of China
| | - Zhiwei Miao
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071, People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071, People's Republic of China
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146
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Tang Z, Shi Y, Mao H, Zhu X, Li W, Cheng Y, Zheng WH, Zhu C. Highly enantioselective synthesis of bisoxindoles with two vicinal quaternary stereocenters via Lewis base mediated addition of oxindoles to isatin-derived ketimines. Org Biomol Chem 2014; 12:6085-8. [DOI: 10.1039/c4ob01039f] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient method provides access to the bisoxindole structure moiety with two vicinal quaternary stereogenic centers (>99 : 1 dr, >99% ee).
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Affiliation(s)
- Zhongkai Tang
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, P.R. China
| | - Yan Shi
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, P.R. China
| | - Haibin Mao
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, P.R. China
| | - Xuebin Zhu
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, P.R. China
| | - Weipeng Li
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, P.R. China
| | - Yixiang Cheng
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, P.R. China
| | - Wen-Hua Zheng
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, P.R. China
| | - Chengjian Zhu
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, P.R. China
- State Key Laboratory of Organometallic Chemistry
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147
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Li TJ, Liu ZQ, Yin HM, Yao CS, Jiang B, Wang XS, Tu SJ, Li XL, Li G. Metal-free [3 + 2 + 1]/[2 + 2 + 1] biscyclization: stereospecific construction with concomitant functionalization of indolizin-5(1H)-one. J Org Chem 2013; 78:11414-20. [PMID: 24168348 PMCID: PMC3876276 DOI: 10.1021/jo401969g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A metal-free [3 + 2 + 1]/[2 + 2 + 1] biscyclization strategy has been developed for the stereospecific construction with concomitant derivation of biologically significant indolizin-5(1H)-ones from simple and commercial starting materials. The transformations are notable because they can yield five new σ bonds and six stereocenters including a quaternary carbon center in a single operation.
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Affiliation(s)
- Tuan-Jie Li
- School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Zhong-Qiu Liu
- School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Hong-Mei Yin
- School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Chang-Sheng Yao
- School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Bo Jiang
- School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Xiang-Shan Wang
- School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Shu-Jiang Tu
- School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University, Xuzhou 221116, P. R. China
| | | | - Guigen Li
- Institute of Chemistry & BioMedical Sciences, Nanjing Univers ity, Nanjing 210093, P. R. China
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA
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148
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Quintavalla A, Lanza F, Montroni E, Lombardo M, Trombini C. Organocatalytic Conjugate Addition of Nitroalkanes to 3-Ylidene Oxindoles: A Stereocontrolled Diversity Oriented Route to Oxindole Derivatives. J Org Chem 2013; 78:12049-64. [DOI: 10.1021/jo402099p] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Arianna Quintavalla
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
| | - Francesco Lanza
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
| | - Elisa Montroni
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
- Consorzio Interuniversitario “CINMPIS”, V. Orabona 4, 70125 Bari, Italy
| | - Marco Lombardo
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
| | - Claudio Trombini
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
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149
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Ramachary DB, Venkaiah C, Krishna PM. Stereoselective Synthesis of Five-Membered Spirooxindoles through Tomita Zipper Cyclization. Org Lett 2013; 15:4714-7. [DOI: 10.1021/ol4020305] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- D. B. Ramachary
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Central University (PO), Hyderabad 500 046, India
| | - Chintalapudi Venkaiah
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Central University (PO), Hyderabad 500 046, India
| | - Patoju M. Krishna
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Central University (PO), Hyderabad 500 046, India
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150
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Sun J, Xie YJ, Yan CG. Construction of Dispirocyclopentanebisoxindoles via Self-Domino Michael-Aldol Reactions of 3-Phenacylideneoxindoles. J Org Chem 2013; 78:8354-65. [DOI: 10.1021/jo4010603] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jing Sun
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Ya-Jing Xie
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chao-Guo Yan
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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