1
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Bhatta S, Senapati BK, Patra SK, Nanda S. A sequential Friedländer and anionic benzannulation strategy for the regiodefined assembly of unsymmetrical acridines. Org Biomol Chem 2023; 21:8727-8738. [PMID: 37870846 DOI: 10.1039/d3ob01470c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
An efficient sequential double-annulation strategy has been developed to afford a series of unsymmetrical acridines with high yield and regioselectivity for the first time. This simple protocol enables the sequential assembly of two aromatic rings from simple starting materials. The reaction proceeds via modified Friedländer annulation and subsequent base-mediated benzannulation with acrylates as Michael acceptors. A range of substrate scope and functional group tolerance is observed. Late-stage synthetic modification is also explored to access novel unsymmetrical acridines in good yield.
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Affiliation(s)
- Suman Bhatta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
| | - Bidyut Kumar Senapati
- Department of Chemistry, Midnapore College (Autonomous), Midnapore, West Bengal, 721101, India
| | - Sanjib Kumar Patra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
| | - Samik Nanda
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
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2
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Zhang Y, Zhang Z, Xia Y, Wang J, Peng Y, Song G. TfOH-Catalyzed Cascade Reaction: Metal-Free Access to 3,3-Disubstituted Phthalides from o-Alkynylbenzoic Acids. J Org Chem 2023; 88:12924-12934. [PMID: 37643422 DOI: 10.1021/acs.joc.3c00760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
A facile new method for the synthesis of 3,3-disubstituted phthalides is reported. A successive reaction process begins with the TfOH-catalyzed cyclization of o-alkynylbenzoic acids followed by an ortho-regioselective electrophilic alkylation of various electron-rich aromatic compounds or alkenes, which has been successfully developed. The corresponding regioselective products of 3-substituted phthalide were obtained in good to high yields.
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Affiliation(s)
- Yanqiu Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Zhiliang Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yunxin Xia
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Jiayi Wang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yanqing Peng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Gonghua Song
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
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3
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Huang Y, Wang J, Li J, Zhang Z, Chen JC. Total synthesis of MS-444: A myosin light chain kinase and HuR inhibitor from Micromonospora sp. KY7123. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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4
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Wang FX, Yan JL, Liu Z, Zhu T, Liu Y, Ren SC, Lv WX, Jin Z, Chi YR. Assembly of multicyclic isoquinoline scaffolds from pyridines: formal total synthesis of fredericamycin A. Chem Sci 2021; 12:10259-10265. [PMID: 34377413 PMCID: PMC8336465 DOI: 10.1039/d1sc02442f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 06/26/2021] [Indexed: 11/21/2022] Open
Abstract
The construction of an isoquinoline skeleton typically starts with benzene derivatives as substrates with the assistance of acids or transition metals. Disclosed here is a concise approach to prepare isoquinoline analogues by starting with pyridines to react with β-ethoxy α,β-unsaturated carbonyl compounds under basic conditions. Multiple substitution patterns and a relatively large number of functional groups (including those sensitive to acidic conditions) can be tolerated in our method. In particular, our protocol allows for efficient access to tricyclic isoquinolines found in hundreds of natural products with interesting bioactivities. The efficiency and operational simplicity of introducing structural complexity into the isoquinoline frameworks can likely enable the collective synthesis of a large set of natural products. Here we show that fredericamycin A could be obtained via a short route by using our isoquinoline synthesis as a key step. A concise approach for rapid assembly of multicyclic isoquinoline scaffolds from pyridines and β-ethoxy α,β-unsaturated carbonyl compounds was developed, which enabled the formal total synthesis of fredericamycin A. ![]()
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Affiliation(s)
- Fang-Xin Wang
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Jia-Lei Yan
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Zhixin Liu
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Tingshun Zhu
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Yingguo Liu
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Shi-Chao Ren
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Wen-Xin Lv
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Zhichao Jin
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University Huaxi District Guiyang 550025 China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore.,State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University Huaxi District Guiyang 550025 China
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5
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Synthesis of 3-arylphthalides with a quaternary carbon center via [4+1] cycloaddition of 2-carbonylcyclohexadienimines with isocyanides under metal-free conditions. JOURNAL OF SAUDI CHEMICAL SOCIETY 2020. [DOI: 10.1016/j.jscs.2020.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Huang J, Shia K. Development of a Cross‐Conjugated Vinylogous [4+2] Anionic Annulation and Application to the Total Synthesis of Natural Antibiotic (±)‐ABX. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jing‐Kai Huang
- Institute of Biotechnology and Pharmaceutical ResearchNational Health Research Institutes 35 Keyan Road Zhunan Miaoli County 35053 Taiwan, R.O.C
| | - Kak‐Shan Shia
- Institute of Biotechnology and Pharmaceutical ResearchNational Health Research Institutes 35 Keyan Road Zhunan Miaoli County 35053 Taiwan, R.O.C
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7
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Huang JK, Shia KS. Development of a Cross-Conjugated Vinylogous [4+2] Anionic Annulation and Application to the Total Synthesis of Natural Antibiotic (±)-ABX. Angew Chem Int Ed Engl 2020; 59:6540-6545. [PMID: 31944523 PMCID: PMC7187479 DOI: 10.1002/anie.201914657] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 01/02/2020] [Indexed: 12/14/2022]
Abstract
The cross‐conjugated vinylogous [4+2] anionic annulation has been newly developed, the cascade process of which has a high preference for regiochemical control and chemoselectivity, giving rise to exclusively Michael‐type adducts in moderate to high yields (up to 94 %, 35 examples). By making use of this approach as a key operation, the first total synthesis of natural antibiotic ABX, in racemic form, has been successfully achieved in a concise 7‐step sequence with an overall yield of about 20 %.
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Affiliation(s)
- Jing-Kai Huang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 35053, Taiwan, R.O.C
| | - Kak-Shan Shia
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 35053, Taiwan, R.O.C
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8
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Awasthi A, Singh M, Rathee G, Chandra R. Recent advancements in synthetic methodologies of 3-substituted phthalides and their application in the total synthesis of biologically active natural products. RSC Adv 2020; 10:12626-12652. [PMID: 35497626 PMCID: PMC9051324 DOI: 10.1039/d0ra00701c] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 03/06/2020] [Indexed: 01/19/2023] Open
Abstract
We have provided a critical review that focuses on key developments in the area of 3-substituted phthalides and their role in the development of important biologically active natural products. 3-Substituted phthalides are vital molecules owing to their fascinating biological activity. The scope, isolation, and characterization of various naturally occurring racemic and chiral 3-substituted phthalides have been covered. We have put significant emphasis on recently developed research methodologies for the synthesis of racemic and chiral 3-substituted phthalides. These newer approaches are essential for the development of newer and elegant strategies for the synthesis of phthalide-based or similar molecular architecture with broader substrate scope and higher stereoselectivities. Also, we have discussed the application of 3-substituted phthalides as a precursor for the synthesis of natural products and their analogs. We have provided contextual information on the chemistry of 3-substituted phthalides and their significance in natural product synthesis.![]()
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Affiliation(s)
- Amardeep Awasthi
- Drug Discovery and Development Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Mandeep Singh
- Drug Discovery and Development Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Garima Rathee
- Drug Discovery and Development Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Ramesh Chandra
- Drug Discovery and Development Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
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9
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Xu K, Li W, Zhu S, Zhu T. Atroposelective Arene Formation by Carbene‐Catalyzed Formal [4+2] Cycloaddition. Angew Chem Int Ed Engl 2019; 58:17625-17630. [DOI: 10.1002/anie.201910049] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 09/23/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Ke Xu
- School of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Wenchang Li
- School of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Shaoheng Zhu
- School of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Tingshun Zhu
- School of ChemistrySun Yat-Sen University Guangzhou 510275 China
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10
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Xu K, Li W, Zhu S, Zhu T. Atroposelective Arene Formation by Carbene‐Catalyzed Formal [4+2] Cycloaddition. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910049] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ke Xu
- School of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Wenchang Li
- School of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Shaoheng Zhu
- School of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Tingshun Zhu
- School of ChemistrySun Yat-Sen University Guangzhou 510275 China
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11
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Chinta BS, Gandhi S, Baire B. Acid catalysed rearrangement of isobenzofurans to angularly fused phthalides. Org Biomol Chem 2019; 17:4715-4719. [PMID: 31032835 DOI: 10.1039/c9ob00708c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An acid catalysed, cascade process for the construction of angularly fused polycyclic phthalides from isobenzofurans under transition metal free conditions has been reported. This process is very general for diverse gem-disubstituted isobenzofuran substrates. Control experiments supported the mechanism as the nucleophilic attack of the carboxylate onto the acid activated furan ring for the simultaneous ring closing-ring opening cascade followed by dehydration. This method serves as a greener alternative for the synthesis of angularly fused polycyclic phthalides.
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12
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Kianmehr E, Fardpour M, Darvish A, Kharat AN, Weng Ng S. Ru-catalyzed synthesis of substituted phthalides through C–H bond activation and functionalization. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2018.12.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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13
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Loesche A, Brückner R. Dienolates of Cycloalkenones and α,β‐Unsaturated Esters Form Diels–Alder Adducts by a Michael/Michael‐Tandem Reaction Rather Than in One Step. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ann‐Christine Loesche
- Institut für Organische Chemie Albert‐Ludwigs‐Universität Albertstraße 21 79104 Freiburg Germany
| | - Reinhard Brückner
- Institut für Organische Chemie Albert‐Ludwigs‐Universität Albertstraße 21 79104 Freiburg Germany
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14
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Liu S, Chen K, Hao WJ, Tu XC, Tu SJ, Jiang B. Generation of 1,3-Dimethylene-Substituted Isobenzofurans via Pd(II)-Catalyzed Selective Oxo-cyclization/SO2 Insertion Cascade of β-Alkynyl Ketones. J Org Chem 2019; 84:1964-1971. [DOI: 10.1021/acs.joc.8b02934] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Shuai Liu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Ke Chen
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Wen-Juan Hao
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Xing-Chao Tu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
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15
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Huang JK, Yang Lauderdale TL, Lin CC, Shia KS. Total Synthesis of Tetarimycin A, (±)-Naphthacemycin A 9, and (±)-Fasamycin A: Structure-Activity Relationship Studies against Drug-Resistant Bacteria. J Org Chem 2018; 83:6508-6523. [PMID: 29785848 DOI: 10.1021/acs.joc.8b00802] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Making use of a reductive olefin coupling reaction and Michael-Dieckmann condensation as two key operations, we have completed a concise total synthesis of tetarimycin A, (±)-naphthacemycin A9, and (±)-fasamycin A in a highly convergent and practical protocol. Synthetic procedures thus developed have also been applied to provide related analogues for structure-activity relationship studies, thereby coming to the conclusion that the free hydroxyl group at C-10 is essential for exerting inhibitory activities against a panel of Gram-positive bacteria, including drug-resistant strains VRE and MRSA.
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Affiliation(s)
- Jing-Kai Huang
- Department of Chemistry , National Tsing Hua University , Hsinchu 30013 , Taiwan, R.O.C
| | | | - Chun-Cheng Lin
- Department of Chemistry , National Tsing Hua University , Hsinchu 30013 , Taiwan, R.O.C
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16
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Deaton DN, Haffner CD, Henke BR, Jeune MR, Shearer BG, Stewart EL, Stuart JD, Ulrich JC. 2,4-Diamino-8-quinazoline carboxamides as novel, potent inhibitors of the NAD hydrolyzing enzyme CD38: Exploration of the 2-position structure-activity relationships. Bioorg Med Chem 2018; 26:2107-2150. [PMID: 29576271 DOI: 10.1016/j.bmc.2018.03.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 03/01/2018] [Accepted: 03/10/2018] [Indexed: 10/17/2022]
Abstract
Starting from 4-amino-8-quinoline carboxamide lead 1a and scaffold hopping to the chemically more tractable quinazoline, a systematic exploration of the 2-substituents of the quinazoline ring, utilizing structure activity relationships and conformational constraint, resulted in the identification of 39 novel CD38 inhibitors. Eight of these analogs were 10-100-fold more potent human CD38 inhibitors, including the single digit nanomolar inhibitor 1am. Several of these molecules also exhibited improved therapeutic indices relative to hERG activity. A representative analog 1r exhibited suitable pharmacokinetic parameters for in vivo animal studies, including moderate clearance and good oral bioavailability. These inhibitor compounds will aid in the exploration of the enzymatic functions of CD38, as well as furthering the study of the therapeutic implications of NAD enhancement in metabolic disease models.
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Affiliation(s)
- David N Deaton
- GlaxoSmithKline Research and Development, 5 Moore Drive, P.O. Box 13398, Research Triangle Park, NC 27709, USA.
| | - Curt D Haffner
- GlaxoSmithKline Research and Development, 5 Moore Drive, P.O. Box 13398, Research Triangle Park, NC 27709, USA
| | - Brad R Henke
- GlaxoSmithKline Research and Development, 5 Moore Drive, P.O. Box 13398, Research Triangle Park, NC 27709, USA
| | - Michael R Jeune
- GlaxoSmithKline Research and Development, 5 Moore Drive, P.O. Box 13398, Research Triangle Park, NC 27709, USA
| | - Barry G Shearer
- GlaxoSmithKline Research and Development, 5 Moore Drive, P.O. Box 13398, Research Triangle Park, NC 27709, USA
| | - Eugene L Stewart
- GlaxoSmithKline Research and Development, 5 Moore Drive, P.O. Box 13398, Research Triangle Park, NC 27709, USA
| | - J Darren Stuart
- GlaxoSmithKline Research and Development, 5 Moore Drive, P.O. Box 13398, Research Triangle Park, NC 27709, USA
| | - John C Ulrich
- GlaxoSmithKline Research and Development, 5 Moore Drive, P.O. Box 13398, Research Triangle Park, NC 27709, USA
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17
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18
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Almasalma AA, Mejía E. 1-Phenyl-1,2-benziodoxol-3-(1H
)-one as Synthon for Phthalide Synthesis through Pd-Free, Base-Free, Sonogashira-Type Coupling Cyclization Reaction. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700940] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ahmad A. Almasalma
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Esteban Mejía
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
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19
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Basak S, Mal D. Applications of [4+2] Anionic Annulation and Carbonyl-Ene Reaction in the Synthesis of Anthraquinones, Tetrahydroanthraquinones, and Pyranonaphthoquinones. J Org Chem 2017; 82:11035-11051. [DOI: 10.1021/acs.joc.7b01987] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shyam Basak
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Dipakranjan Mal
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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20
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Lokesh K, Kesavan V. Efficient Synthesis of Highly Functionalized Spirocarbocyclic Oxindoles through Hauser Annulation. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kanduru Lokesh
- Chemical Biology Laboratory; Department of Biotechnology; Bhupat and Jyoti Mehta School of Biosciences; Indian Institute of Technology Madras; 600036 Chennai India
| | - Venkitasamy Kesavan
- Chemical Biology Laboratory; Department of Biotechnology; Bhupat and Jyoti Mehta School of Biosciences; Indian Institute of Technology Madras; 600036 Chennai India
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21
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Yang B, Lin K, Shi Y, Gao S. Ti(Oi-Pr) 4-promoted photoenolization Diels-Alder reaction to construct polycyclic rings and its synthetic applications. Nat Commun 2017; 8:622. [PMID: 28931807 PMCID: PMC5607006 DOI: 10.1038/s41467-017-00440-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 06/26/2017] [Indexed: 11/09/2022] Open
Abstract
Stereoselective construction of polycyclic rings with all-carbon quaternary centers, and vicinal all-carbon quaternary stereocenters, remains a significant challenge in organic synthesis. These structures can be found in a wide range of polycyclic natural products and drug molecules. Here we report a Ti(Oi-Pr)4-promoted photoenolization/Diels–Alder (PEDA) reaction to construct hydroanthracenol and related polycyclic rings bearing all-carbon quaternary centers. This photolysis proceeds under mild conditions and generates a variety of photo-cycloaddition products in good reaction efficiency and stereoselectivity (48 examples), and has been successfully used in the construction of core skeleton of oncocalyxones, tetracycline and pleurotin. It also provides a reliable method for the late-stage modification of natural products bearing enone groups, such as steroids. The total synthesis of oncocalyxone B was successfully achieved using this PEDA approach. Anthracenols with multiple chiral centres are common motifs in natural products. Here, the authors show a highly stereoselective photoenolization/Diels–Alder methodology involving a key Lewis acid reagent enabling the efficient construction of a family of anthracenol derivatives with quaternary centers.
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Affiliation(s)
- Baochao Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663N Zhongshan Road, Shanghai, 200062, China
| | - Kuaikuai Lin
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663N Zhongshan Road, Shanghai, 200062, China
| | - Yingbo Shi
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663N Zhongshan Road, Shanghai, 200062, China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663N Zhongshan Road, Shanghai, 200062, China.
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22
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Naysmith BJ, Hume PA, Sperry J, Brimble MA. Pyranonaphthoquinones - isolation, biology and synthesis: an update. Nat Prod Rep 2017; 34:25-61. [PMID: 27759131 DOI: 10.1039/c6np00080k] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covering: 2008 to 2015. A review on the isolation, biological activity and synthesis of pyranonaphthoquinone natural products from 2008-2015 is providedThis review discusses the isolation, biological activity and synthesis of pyranonaphthoquinone natural products, covering the years 2008-2015. The pyranonaphthoquinones are a group of metabolites sharing a common naphtho[2,3-c]pyran-5,10-dione ring system that have been isolated from a wide range of microorganisms, plants and insects. In addition to their synthetically challenging molecular structures, pyranonaphthoquinones exhibit a wide array of biological activity, including anti-bacterial, anti-fungal and anti-cancer properties. The therapeutic potential of these compounds has led to a dynamic interplay between total synthesis and biological evaluation.
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Affiliation(s)
- Briar J Naysmith
- School of Chemical Sciences, Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland 1142, New Zealand
| | - Paul A Hume
- School of Chemical Sciences, Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland 1142, New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences, Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland 1142, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland 1142, New Zealand
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23
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Gupta AK, Vaishanv NK, Kant R, Mohanan K. Rapid and selective synthesis of spiropyrazolines and pyrazolylphthalides employing Seyferth–Gilbert reagent. Org Biomol Chem 2017; 15:6411-6415. [DOI: 10.1039/c7ob01417a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient protocol for the selective synthesis of spiropyrazoline phosphonates and pyrazolylphthalides employing Seyferth–Gilbert reagent is reported.
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Affiliation(s)
- Ashis Kumar Gupta
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
| | - Narendra Kumar Vaishanv
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Ruchir Kant
- Molecular and Structural Biology Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
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Mal D, Jana S. Transpositive Tandem Annulation of Phthalides with Allene Carboxylates: Regioselective Synthesis of Arylnaphthalene Lignans. J Org Chem 2016; 81:11857-11865. [DOI: 10.1021/acs.joc.6b02313] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dipakranjan Mal
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | - Supriti Jana
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
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25
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Chakraborty S, Das G, Ghosh S, Mal D. Regioselective synthesis of naphthoquinone/naphthoquinol-carbohydrate hybrids by [4 + 2] anionic annulations and studies on their cytotoxicity. Org Biomol Chem 2016; 14:10636-10647. [PMID: 27782276 DOI: 10.1039/c6ob02154a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient and regioselective synthetic route to naphthoquinone/naphthoquinol-carbohydrate hybrids has been developed. It is based upon anionic annulation of 3-nucleofugalphthalides with an acrylate appended sugar moiety. In each of the annulations studied, the arene-carbohydrate hybrids were obtained in good to excellent yields. The in vitro cytotoxic activity of the synthetic naphthoquinone/naphthonol-carbohydrate hybrids were evaluated against the human cervical cancer cell line (HeLa), and a few of them were found to exhibit potent anticancer activity against the cell line.
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Affiliation(s)
- Soumen Chakraborty
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India.
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26
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Mahendar L, Satyanarayana G. Domino [Pd]-Catalysis: One-Pot Synthesis of Isobenzofuran-1(3H)-ones. J Org Chem 2016; 81:7685-91. [DOI: 10.1021/acs.joc.6b01396] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Lodi Mahendar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi−502 285, Sangareddy, Medak District, Telangana, India
| | - Gedu Satyanarayana
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi−502 285, Sangareddy, Medak District, Telangana, India
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27
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Basak S, Mal D. Intramolecular carbonyl-ene reactions in the synthesis of peri-oxygenated hydroaromatics. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.02.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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28
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29
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Donner CD. Naphthopyranones--isolation, bioactivity, biosynthesis and synthesis. Nat Prod Rep 2015; 32:578-604. [PMID: 25531639 DOI: 10.1039/c4np00127c] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The 1H-naphtho[2,3-c]pyran-1-one (naphthopyranone) moiety forms the structural framework of a group of secondary metabolites that have been isolated from a range of organisms including fungi, bacteria, lichen and plants. This review documents the known naturally occurring naphthopyranones - their isolation, biosynthesis and biological activity. A survey of methods reported for the synthesis of naphthopyranone natural products is presented.
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Mahendar L, Satyanarayana G. Domino One-Pot Process for the Synthesis of Isobenzofuran-1(3H)-ones via [Cu]-Catalysis Using Water as the Green Solvent. J Org Chem 2015; 80:7089-98. [DOI: 10.1021/acs.joc.5b00888] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lodi Mahendar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate Campus, Yeddumailaram-502 205,
Medak District, Telangana, India
| | - Gedu Satyanarayana
- Department of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate Campus, Yeddumailaram-502 205,
Medak District, Telangana, India
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31
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Christmann M, Hu J, Kitamura M, Stoltz B. Tetrahedron reports on organic chemistry. Tetrahedron 2015. [DOI: 10.1016/s0040-4020(15)00744-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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32
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Gandeepan P, Rajamalli P, Cheng CH. Rhodium(III)-Catalyzed [4+1] Annulation of Aromatic and Vinylic Carboxylic Acids with Allenes: An Efficient Method Towards Vinyl-Substituted Phthalides and 2-Furanones. Chemistry 2015; 21:9198-203. [DOI: 10.1002/chem.201501106] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Indexed: 11/09/2022]
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33
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Dinda BK, Basak S, Mal D. Regiospecific Synthesis of 7-Hydroxyindoles from Pyrroles by Anionic Benzannulation. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402486] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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34
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Karmakar R, Pahari P, Mal D. Phthalides and Phthalans: Synthetic Methodologies and Their Applications in the Total Synthesis. Chem Rev 2014; 114:6213-84. [DOI: 10.1021/cr400524q] [Citation(s) in RCA: 249] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Raju Karmakar
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
- Technical University of Braunschweig, 38106 Braunschweig, Germany
| | - Pallab Pahari
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
- Synthetic
Organic Chemistry Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
| | - Dipakranjan Mal
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
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35
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Studies in the Synthesis of Biaryl Natural Products. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/b978-0-12-417185-5.00010-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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36
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Bioactive heterocyclic natural products from actinomycetes having effects on cancer-related signaling pathways. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2014; 99:147-98. [PMID: 25296439 DOI: 10.1007/978-3-319-04900-7_3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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37
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Heravi MM, Hajiabbasi P. Recent advances in C-heteroatom bond forming by asymmetric Michael addition. Mol Divers 2013; 18:411-39. [DOI: 10.1007/s11030-013-9494-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 12/02/2013] [Indexed: 10/25/2022]
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38
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Stoltz B, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2013. [DOI: 10.1016/s0040-4020(13)01252-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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39
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Ghosh K, Karmakar R, Mal D. Total Synthesis of Neo-Tanshinlactones through a Cascade Benzannulation-Lactonization as the Key Step. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300102] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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