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Kraus GA, Wang S. Annulations with Butenolides and Phthalides: New Entries to Isocoumarins, 3,4-Dihydroisocoumarins, and Benzofurans. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The reactions of the anions of butenolides and substituted phthalides with sorbate esters and mono-epoxy sorbate esters furnish isocoumarins, 3,4-dihydroisocoumarins, and benzofurans. The yields range from 41% to 71%.
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2
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Abstract
The straightforward oxidation of electron-rich arenes, namely, phenols, naphthols, and anisole derivatives, under mild reaction conditions, is described by means of the use of an environmentally benign HFIP-UHP system. The corresponding quinones or hydroxylated arenes were obtained in moderate to good yields.
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Affiliation(s)
- Natalia Llopis
- Departamento de Quı́mica Orgánica and Instituto de Sı́ntesis Orgánica (ISO), Facultad de Ciencias, Universidad de Alicante, Apdo. 99, Alicante E-03080, Spain
| | - Alejandro Baeza
- Departamento de Quı́mica Orgánica and Instituto de Sı́ntesis Orgánica (ISO), Facultad de Ciencias, Universidad de Alicante, Apdo. 99, Alicante E-03080, Spain
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3
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Chaumont-Olive P, Maddaluno J, Harrison-Marchand A. Total synthesis of spiromastilactone A. Org Biomol Chem 2019; 17:3819-3824. [DOI: 10.1039/c9ob00547a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spiromastilactone A is synthesized for the first time in 44% overall yield in eight synthetic steps, among which six are quantitative, and the 89 : 11 enantiomeric ratio (78% ee value) is in favour of the right enantiomer (R configuration).
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Affiliation(s)
| | - Jacques Maddaluno
- Normandie Université
- UNIROUEN
- INSA de Rouen
- CNRS
- Laboratoire COBRA (UMR 6014 & FR 3038)
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4
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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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5
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Kim T, Jeong KH, Kang KS, Nakata M, Ham J. An Optimized and General Synthetic Strategy To Prepare Arylnaphthalene Lactone Natural Products from Cyanophthalides. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601611] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Taejung Kim
- Natural Constituents Research Center; Korea Institute of Science and Technology (KIST); 25451 Gangneung Republic of Korea
- Department of Applied Chemistry; Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi, Kohoku-ku 223-8522 Yokohama Japan
| | - Kyu Hyuk Jeong
- Natural Constituents Research Center; Korea Institute of Science and Technology (KIST); 25451 Gangneung Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine; Gachon University; 13120 Seongnam Republic of Korea
| | - Masaya Nakata
- Department of Applied Chemistry; Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi, Kohoku-ku 223-8522 Yokohama Japan
| | - Jungyeob Ham
- Natural Constituents Research Center; Korea Institute of Science and Technology (KIST); 25451 Gangneung Republic of Korea
- Department of Biological Chemistry; University of Science and Technology (UST); 34113 Daejeon Republic of Korea
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6
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Takeda Y, Narita K, Katoh T. Total Synthesis of Marine Sesquiterpene Quinones (+)-Cyclospongiaquinone-1 and (-)-Dehydrocyclospongiaquinone-1 with a Tetracyclic Benzo[a]xanthene Skeleton. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601160] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yuki Takeda
- Laboratory of Synthetic and Medicinal Chemistry; Faculty of Pharmaceutical Sciences; Tohoku Medical and Pharmaceutical University; 4-4-1 Komatsushima, Aoba-ku 981-8558 Sendai Japan
| | - Koichi Narita
- Laboratory of Synthetic and Medicinal Chemistry; Faculty of Pharmaceutical Sciences; Tohoku Medical and Pharmaceutical University; 4-4-1 Komatsushima, Aoba-ku 981-8558 Sendai Japan
| | - Tadashi Katoh
- Laboratory of Synthetic and Medicinal Chemistry; Faculty of Pharmaceutical Sciences; Tohoku Medical and Pharmaceutical University; 4-4-1 Komatsushima, Aoba-ku 981-8558 Sendai Japan
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Jeong JH, Oh YJ, Lho Y, Park SY, Liu KH, Ha E, Seo YH. Targeting the entry region of Hsp90's ATP binding pocket with a novel 6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl amide. Eur J Med Chem 2016; 124:1069-1080. [PMID: 27783977 DOI: 10.1016/j.ejmech.2016.10.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 10/16/2016] [Accepted: 10/17/2016] [Indexed: 11/26/2022]
Abstract
The molecular chaperone Hsp90 plays an important role in cancer cell survival and proliferation by regulating the maturation and stabilization of numerous oncogenic proteins. Due to its potential to simultaneously disable multiple signaling pathways, Hsp90 has emerged as an attractive therapeutic target for cancer treatment. In this study, the design, synthesis, and biological evaluation of a series of Hsp90 inhibitors are described. Among the synthetic compounds, 6,7-dihydrothieno [3,2-c]pyridin-5(4H)-yl amide 19 exhibits a remarkable binding affinity to the N-terminus of Hsp90 in a fluorescence polarization (FP) binding assay (IC50 = 50.3 nM). Furthermore, it effectively inhibits the proliferation of H1975 non-small cell lung cancer (NSCLC) and Skbr3 breast cancer cell lines with GI50 values of 0.31 μM and 0.11 μM, respectively. Compound 19 induces the degradation of the Hsp90 client proteins including EGFR, Her2, Met, c-Raf, and Akt, and consequently promotes apoptotic cancer cell death. Compound 19 also inhibits the growth of H1975 xenografts in NOD-scid IL2R gammanull mice without any apparent body-weight loss. The immunohistologic evaluation indicates that compound 19 decreases the expression of Akt in xenograft tumor tissue via an inhibition of the Hsp90 chaperon function. Additionally, the cytochrome P450 assay indicates that compound 19 has no effect on the activities of five major P450 isoforms (IC50 > 50 μM for 1A2, 2C9, 2C19, 2D6, and 3A), suggesting that clinical interactions between compound 19 and the substrate drugs of the five major P450 isoforms are not expected. Overall, compound 19 represents a new class of Hsp90 inhibitor with its 6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl-amide structure, and it has the therapeutic potential to overcome drug resistance in cancer chemotherapy.
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Affiliation(s)
- Ju Hui Jeong
- College of Pharmacy, Keimyung University, Daegu 704-701, South Korea
| | - Yong Jin Oh
- College of Pharmacy, Keimyung University, Daegu 704-701, South Korea
| | - Yunmee Lho
- Department of Biochemistry, School of Medicine, Keimyung University, Daegu 704-701, South Korea
| | - Sun You Park
- College of Pharmacy, Keimyung University, Daegu 704-701, South Korea
| | - Kwang-Hyeon Liu
- BK21 Plus KNU Multi-Omics Based Creative Drug Research Team, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, South Korea
| | - Eunyoung Ha
- Department of Biochemistry, School of Medicine, Keimyung University, Daegu 704-701, South Korea.
| | - Young Ho Seo
- College of Pharmacy, Keimyung University, Daegu 704-701, South Korea.
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8
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Sun D, Chen S, Cheng A, Wang M. Roles of the Picornaviral 3C Proteinase in the Viral Life Cycle and Host Cells. Viruses 2016; 8:82. [PMID: 26999188 PMCID: PMC4810272 DOI: 10.3390/v8030082] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 02/27/2016] [Accepted: 03/07/2016] [Indexed: 12/12/2022] Open
Abstract
The Picornaviridae family comprises a large group of non-enveloped viruses that have a major impact on human and veterinary health. The viral genome contains one open reading frame encoding a single polyprotein that can be processed by viral proteinases. The crucial 3C proteinases (3C(pro)s) of picornaviruses share similar spatial structures and it is becoming apparent that 3C(pro) plays a significant role in the viral life cycle and virus host interaction. Importantly, the proteinase and RNA-binding activity of 3C(pro) are involved in viral polyprotein processing and the initiation of viral RNA synthesis. In addition, 3C(pro) can induce the cleavage of certain cellular factors required for transcription, translation and nucleocytoplasmic trafficking to modulate cell physiology for viral replication. Due to interactions between 3C(pro) and these essential factors, 3C(pro) is also involved in viral pathogenesis to support efficient infection. Furthermore, based on the structural conservation, the development of irreversible inhibitors and discovery of non-covalent inhibitors for 3C(pro) are ongoing and a better understanding of the roles played by 3C(pro) may provide insights into the development of potential antiviral treatments. In this review, the current knowledge regarding the structural features, multiple functions in the viral life cycle, pathogen host interaction, and development of antiviral compounds for 3C(pro) is summarized.
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Affiliation(s)
- Di Sun
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
| | - Shun Chen
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang, Chengdu 611130, China.
| | - Anchun Cheng
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang, Chengdu 611130, China.
| | - Mingshu Wang
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China.
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang, Chengdu 611130, China.
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9
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Lee CY, Cheon CH. Diastereomeric Resolution of a Racemic Biarylboronic Acid and Its Application to Divergent Asymmetric Total Syntheses of Some Axially Chiral Natural Products. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500798] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Mal D, Ghosh K, Jana S. Synthesis of Vitamin K and Related Naphthoquinones via Demethoxycarbonylative Annulations and a Retro-Wittig Rearrangement. Org Lett 2015; 17:5800-3. [DOI: 10.1021/acs.orglett.5b02920] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [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
| | - Ketaki Ghosh
- 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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11
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Huang JK, Yang Lauderdale TL, Shia KS. Studies on Antibiotics Active against Resistant Bacteria. Total Synthesis of MRSA-Active Tetarimycin A and Its Analogues. Org Lett 2015; 17:4248-51. [PMID: 26273719 DOI: 10.1021/acs.orglett.5b02039] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Making use of the Hauser-Kraus annulation as a key step, the first total synthesis of tetarimycin A has been accomplished in a highly convergent and operationally simple manner. Preliminary SAR not only validated that tetarimycin A exhibited potent activity against MRSA and VRE at a low MIC value but also identified that the hydroxyl group at C-10 was essential for antibacterial activities.
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Affiliation(s)
- Jing-Kai Huang
- Institute of Biotechnology and Pharmaceutical Research and ‡National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes , Miaoli County 35053, Taiwan, R.O.C
| | - Tsai-Ling Yang Lauderdale
- Institute of Biotechnology and Pharmaceutical Research and ‡National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes , Miaoli County 35053, Taiwan, R.O.C
| | - Kak-Shan Shia
- Institute of Biotechnology and Pharmaceutical Research and ‡National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes , Miaoli County 35053, Taiwan, R.O.C
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12
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Mulay SV, Gholap SP, Fernandes RA. Formal Synthesis of the Human Rhinovirus 3 C Protease Inhibitor (−)-Thysanone. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sandip V. Mulay
- Department of Chemistry; Indian Institute of Technology-Bombay, Powai; Mumbai 400076 Maharashtra India
| | - Sachin P. Gholap
- Department of Chemistry; Indian Institute of Technology-Bombay, Powai; Mumbai 400076 Maharashtra India
| | - Rodney A. Fernandes
- Department of Chemistry; Indian Institute of Technology-Bombay, Powai; Mumbai 400076 Maharashtra India
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13
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Young Jeong J, Sperry J, Taylor JA, Brimble MA. Synthesis and evaluation of 9-deoxy analogues of (-)-thysanone, an inhibitor of HRV 3C protease. Eur J Med Chem 2014; 87:220-7. [PMID: 25259514 DOI: 10.1016/j.ejmech.2014.09.063] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 09/15/2014] [Accepted: 09/18/2014] [Indexed: 11/27/2022]
Abstract
9-Deoxy analogues of the HRV 3C protease inhibitor (-)-thysanone display better inhibitory properties than the natural product, inferring the C9-OH hinders binding to the enzyme.
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Affiliation(s)
- Joo Young Jeong
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1142, New Zealand; School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1142, New Zealand
| | - John A Taylor
- School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand.
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1142, New Zealand; Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland Mail Centre, Auckland 1142, New Zealand.
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