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Kotha S, Cheekatla SR, Meshram M, Bandi V, Seema V. Realization of Photo‐Thermal Metathesis Under Microwave Irradiation Conditions: An Entry to Triquinane Frameworks. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900432] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sambasivarao Kotha
- Department of ChemistryIndian Institute of Technology Bombay Mumbai Powai India-400076 India
| | - Subba Rao Cheekatla
- Department of ChemistryIndian Institute of Technology Bombay Mumbai Powai India-400076 India
| | - Milind Meshram
- Department of ChemistryIndian Institute of Technology Bombay Mumbai Powai India-400076 India
| | - Vijayalakshmi Bandi
- Department of ChemistryIndian Institute of Technology Bombay Mumbai Powai India-400076 India
| | - Vittal Seema
- Department of ChemistryIndian Institute of Technology Bombay Mumbai Powai India-400076 India
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2
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Zhang J, Li Y, Ren F, Zhang Y, Liu X, Liu L, Che Y. Phomanolides C-F from a Phoma sp.: Meroterpenoids Generated via Hetero-Diels-Alder Reactions. JOURNAL OF NATURAL PRODUCTS 2019; 82:1678-1685. [PMID: 31120749 DOI: 10.1021/acs.jnatprod.9b00281] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Phomanolides C-F (1-4), four new meroterpenoids, were isolated from a Phoma sp., together with the known phomanolides A (5) and B (6); their structures were elucidated primarily by NMR experiments. The absolute configurations of 1-3 were assigned by electronic circular dichroism calculations, and that of 4 was established by X-ray diffraction analysis using Cu Kα radiation. Compounds 1-3 incorporate an unprecedented trioxa[4.4.3]propellane subunit in their skeletons. Compounds 2 and 4 were weakly cytotoxic.
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Affiliation(s)
- Jinyu Zhang
- State Key Laboratory of Toxicology & Medical Countermeasures , Beijing Institute of Pharmacology & Toxicology , Beijing 100850 , People's Republic of China
| | - Yumei Li
- State Key Laboratory of Toxicology & Medical Countermeasures , Beijing Institute of Pharmacology & Toxicology , Beijing 100850 , People's Republic of China
- Nanjing University of Chinese Medicine , Nanjing 210023 , People's Republic of China
| | - Fengxia Ren
- State Key Laboratory of Toxicology & Medical Countermeasures , Beijing Institute of Pharmacology & Toxicology , Beijing 100850 , People's Republic of China
| | - Yang Zhang
- State Key Laboratory of Toxicology & Medical Countermeasures , Beijing Institute of Pharmacology & Toxicology , Beijing 100850 , People's Republic of China
| | - Xingzhong Liu
- State Key Laboratory of Mycology , Institute of Microbiology, Chinese Academy of Sciences , Beijing 100101 , People's Republic of China
| | - Ling Liu
- State Key Laboratory of Mycology , Institute of Microbiology, Chinese Academy of Sciences , Beijing 100101 , People's Republic of China
| | - Yongsheng Che
- State Key Laboratory of Toxicology & Medical Countermeasures , Beijing Institute of Pharmacology & Toxicology , Beijing 100850 , People's Republic of China
- Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences & Peking Union Medical College , Beijing 100050 , People's Republic of China
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3
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Tzvetkov NT, Neumann B, Stammler HG, Antonov L. A simple approach to multifunctionalized N1-alkylated 7-amino-6-azaoxindole derivatives using their in situ stabilized tautomer form. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.08.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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4
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Poplata S, Tröster A, Zou YQ, Bach T. Recent Advances in the Synthesis of Cyclobutanes by Olefin [2 + 2] Photocycloaddition Reactions. Chem Rev 2016; 116:9748-815. [PMID: 27018601 PMCID: PMC5025837 DOI: 10.1021/acs.chemrev.5b00723] [Citation(s) in RCA: 661] [Impact Index Per Article: 82.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Indexed: 11/30/2022]
Abstract
The [2 + 2] photocycloaddition is undisputedly the most important and most frequently used photochemical reaction. In this review, it is attempted to cover all recent aspects of [2 + 2] photocycloaddition chemistry with an emphasis on synthetically relevant, regio-, and stereoselective reactions. The review aims to comprehensively discuss relevant work, which was done in the field in the last 20 years (i.e., from 1995 to 2015). Organization of the data follows a subdivision according to mechanism and substrate classes. Cu(I) and PET (photoinduced electron transfer) catalysis are treated separately in sections 2 and 4 , whereas the vast majority of photocycloaddition reactions which occur by direct excitation or sensitization are divided within section 3 into individual subsections according to the photochemically excited olefin.
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Affiliation(s)
- Saner Poplata
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - Andreas Tröster
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - You-Quan Zou
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - Thorsten Bach
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
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5
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Behera TK, Jarhad DB, Mobin SM, Singh V. Molecular complexity and diversity from aromatics. Intramolecular cycloaddition of cyclohexa-2,4-dienones and sigmatropic shift in excited state: a unified approach towards synthesis of polycyclic frameworks related to crotogoudin, conidiogenol, and crinipellins. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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6
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Kotha S, Chinnam AK, Ali R. Hybrid macrocycle formation and spiro annulation on cis-syn-cis-tricyclo[6.3.0.0(2,6)]undeca-3,11-dione and its congeners via ring-closing metathesis. Beilstein J Org Chem 2015. [PMID: 26199668 PMCID: PMC4505178 DOI: 10.3762/bjoc.11.126] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
We have developed a simple methodology to transform cis-syn-cis-triquinane derivative 2 into the diindole based macrocycle 6 involving Fischer indolization and ring-closing metathesis (RCM). Various spiro-polyquinane derivatives have been assembled via RCM as a key step.
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Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400 076, India
| | - Ajay Kumar Chinnam
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400 076, India
| | - Rashid Ali
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400 076, India
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7
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Luo Z, Zhou B, Li Y. Total Synthesis of (−)-(α)-Kainic Acid via a Diastereoselective Intramolecular [3 + 2] Cycloaddition Reaction of an Aryl Cyclopropyl Ketone with an Alkyne. Org Lett 2012; 14:2540-3. [DOI: 10.1021/ol3008414] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhi Luo
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Road Zu Chong Zhi, Zhangjiang Hi-Tech Park, Shanghai 201203, P.R. China
| | - Bing Zhou
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Road Zu Chong Zhi, Zhangjiang Hi-Tech Park, Shanghai 201203, P.R. China
| | - Yuanchao Li
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Road Zu Chong Zhi, Zhangjiang Hi-Tech Park, Shanghai 201203, P.R. China
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Synthesis of 4-aza tricyclo [6.2.2.01,6]dodecenone and photoreactions: a stereoselective, entry to aza-polycyclic systems related to magellanine and congeners. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.10.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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Lu Z, Shen M, Yoon TP. [3+2] cycloadditions of aryl cyclopropyl ketones by visible light photocatalysis. J Am Chem Soc 2011; 133:1162-4. [PMID: 21214249 DOI: 10.1021/ja107849y] [Citation(s) in RCA: 252] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a new method for the formal [3+2] reaction of aryl cyclopropyl ketones with olefins to generate highly substituted cyclopentane ring systems. The key initiation step in this process is the one-electron reduction of the ketone to the corresponding radical anion, which is accomplished using a photocatalytic system comprising Ru(bpy)(3)(2+), La(OTf)(3), and TMEDA.
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Affiliation(s)
- Zhan Lu
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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Yu H, Li J, Kou Z, Du X, Wei Y, Fun HK, Xu J, Zhang Y. Photoinduced Tandem Reactions of Isoquinoline-1,3,4-trione with Alkynes To Build Aza-polycycles. J Org Chem 2010; 75:2989-3001. [PMID: 20353178 DOI: 10.1021/jo100218w] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haitao Yu
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
| | - Jinbo Li
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
| | - Zhuangfei Kou
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
| | - Xuewen Du
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
| | - Yi Wei
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
| | - Hoong-Kun Fun
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM Penang, Malaysia
| | - Jianhua Xu
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
| | - Yan Zhang
- School of Chemistry and Chemical Engineering, Key Lab of Analytical Chemistry for Life Science, Ministry of Education of China, Nanjing University, Nanjing, 210093, P. R. China
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Banerjee S, Yadav S, Lahiri S. PET reactions of cis-dibenzoylalkenes: an efficient trans-reduction of C=C bond. Org Lett 2009; 11:3494-7. [PMID: 19719193 DOI: 10.1021/ol901307v] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In contrast to its reaction under catalytic hydrogenation, the first instance of an exclusive and chemoselective trans-reduction of the ene part of derivatives of 5,6-dibenzoylbicyclo[2.2.2]oct-5-en-2-one has been reported under moderate photoinduced electron transfer (PET) conditions using triethylamine (TEA). In the absence of TEA, such molecules underwent 1,5-photophenyl migration yielding vinyl ketenes.
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Affiliation(s)
- Srirupa Banerjee
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India
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Affiliation(s)
- Norbert Hoffmann
- Laboratoire des Réactions Sélectives et Applications, UMR 6519 CNRS et Université de Reims Champagne-Ardenne, UFR Sciences, B.P. 1039, F-51687 Reims, Cedex 02, France
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13
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Synthesis of bicyclo[3.2.1]octanones via ketyl radical promoted rearrangements under reductive PET conditions. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.08.054] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Synthesis of angularly fused cyclopentanoids and analogous tricycles via photoinduced ketyl radical/radical anion fragmentation–cyclization reactions. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.07.092] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Orentas E, Bagdžiūnas G, Berg U, Žilinskas A, Butkus E. Enantiospecific Synthesis and Chiroptical Properties of Bicyclic Enones. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700241] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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