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Soto M, Pérez‐Ramos P, Soengas RG, Rodríguez‐Solla H. Substrate‐Controlled Hydrogenation of Flavanones: Selective Synthesis of 2′‐Hydroxy‐1,3‐Diarylpropanes and Flavans. European J Org Chem 2023. [DOI: 10.1002/ejoc.202300139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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2
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Beletskaya IP, Titanyuk ID. Synthesis of α-Aryldiazophosphonates via a Diazo Transfer Reaction. J Org Chem 2022; 87:2748-2757. [PMID: 35191306 DOI: 10.1021/acs.joc.1c02673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The simple synthetic procedure for preparation of α-aryl-α-diazophosphonates via a diazo transfer reaction is proposed. Benzylphosphonates reacted with tosyl azide (TsN3) in the presence of potassium tert-butoxide (KOtBu) to afford diazophosphonates in a yield up to 79%. The proposed method is general. The reaction uses easily available starting materials, tolerates various functional groups, and may be applied for multi-gram scale synthesis.
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Affiliation(s)
- Irina P Beletskaya
- Department of Chemistry, Moscow State University, Leninskie Gory 1-3, Moscow 11999, Russian Federation
| | - Igor D Titanyuk
- Department of Chemistry, Moscow State University, Leninskie Gory 1-3, Moscow 11999, Russian Federation
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3
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Nagasawa S, Fujiki S, Sasano Y, Iwabuchi Y. Chromium-Salen Complex/Nitroxyl Radical Cooperative Catalysis: A Combination for Aerobic Intramolecular Dearomative Coupling of Phenols. J Org Chem 2021; 86:6952-6968. [PMID: 33890777 DOI: 10.1021/acs.joc.1c00438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We describe an aerobic intramolecular dearomative coupling reaction of tethered phenols using a catalytic system consisting of a chromium-salen (Cr-salen) complex combined with a nitroxyl radical. This novel catalytic system enables formation of various spirocyclic dienone products including those unable to be accessed by previously reported methods efficiently under mild reaction conditions.
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Affiliation(s)
- Shota Nagasawa
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Shogo Fujiki
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Yusuke Sasano
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Yoshiharu Iwabuchi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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4
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Satish S, Chitral R, Kori A, Sharma B, Puttur J, Khan AA, Desle D, Raikuvar K, Korkegian A, Martis EAF, Iyer KR, Coutinho EC, Parish T, Nandan S. Design, synthesis and SAR of antitubercular benzylpiperazine ureas. Mol Divers 2021; 26:73-96. [PMID: 33385288 DOI: 10.1007/s11030-020-10158-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/17/2020] [Indexed: 10/22/2022]
Abstract
N-furfuryl piperazine ureas disclosed by scientists at GSK Tres Cantos were chosen as antimycobacterial hits from a phenotypic whole-cell screen. Bioisosteric replacement of the furan ring in the GSK Tres Cantos molecules with a phenyl ring led to molecule (I) with an MIC of 1 μM against Mtb H37Rv, low cellular toxicity (HepG2 IC50 ~ 80 μM), good DMPK properties and specificity for Mtb. With the aim of delineating the SAR associated with (I), fifty-five analogs were synthesized and screened against Mtb. The SAR suggests that the piperazine ring, benzyl urea and piperonyl moieties are essential signatures of this series. Active compounds in this series are metabolically stable, have low cellular toxicity and are valuable leads for optimization. Molecular docking suggests these molecules occupy the Q0 site of QcrB like Q203. Bioisosteric replacement of N-furfuryl piperazine-1-carboxamides yielded molecule (I) a novel lead with satisfactory PD, metabolism, and toxicity profiles.
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Affiliation(s)
- Sohal Satish
- Ambernath Organics Pvt. Ltd., 222, The Summit Business Bay, Andheri (E), Mumbai, 400 093, India
| | - Rohan Chitral
- Ambernath Organics Pvt. Ltd., 222, The Summit Business Bay, Andheri (E), Mumbai, 400 093, India
| | - Amitkumar Kori
- Ambernath Organics Pvt. Ltd., 222, The Summit Business Bay, Andheri (E), Mumbai, 400 093, India
| | - Basantkumar Sharma
- Ambernath Organics Pvt. Ltd., 222, The Summit Business Bay, Andheri (E), Mumbai, 400 093, India
| | - Jayashree Puttur
- Ambernath Organics Pvt. Ltd., 222, The Summit Business Bay, Andheri (E), Mumbai, 400 093, India
| | - Afreen A Khan
- Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Kalina, Santacruz (E), Mumbai, 400 098, India
| | - Deepali Desle
- Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Kalina, Santacruz (E), Mumbai, 400 098, India
| | - Kavita Raikuvar
- Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Kalina, Santacruz (E), Mumbai, 400 098, India
| | - Aaron Korkegian
- TB Discovery Research, Infectious Disease Research Institute, 1616 Eastlake Avenue E, Suite 400, Seattle, WA, 98102, USA
| | - Elvis A F Martis
- Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Kalina, Santacruz (E), Mumbai, 400 098, India
| | - Krishna R Iyer
- Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Kalina, Santacruz (E), Mumbai, 400 098, India
| | - Evans C Coutinho
- Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Kalina, Santacruz (E), Mumbai, 400 098, India
| | - Tanya Parish
- TB Discovery Research, Infectious Disease Research Institute, 1616 Eastlake Avenue E, Suite 400, Seattle, WA, 98102, USA
| | - Santosh Nandan
- Ambernath Organics Pvt. Ltd., 222, The Summit Business Bay, Andheri (E), Mumbai, 400 093, India.
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Solvent‐Controlled Hydrogenation of 2’‐Hydroxychalcones: A Simple Solution to the Total Synthesis of Bussealins. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000892] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Sang D, Yue H, Zhao Z, Yang P, Tian J. Anchimerically Assisted Selective Cleavage of Acid-Labile Aryl Alkyl Ethers by Aluminum Triiodide and N, N-Dimethylformamide Dimethyl Acetal. J Org Chem 2020; 85:6429-6440. [PMID: 32319290 DOI: 10.1021/acs.joc.0c00290] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aluminum triiodide is harnessed by N,N-dimethylformamide dimethyl acetal (DMF-DMA) for the selective cleavage of ethers via neighboring group participation. Various acid-labile functional groups, including carboxylate, allyl, tert-butyldimethylsilyl (TBS), and tert-butoxycarbonyl (Boc), suffer the conditions intact. The method offers an efficient approach to cleaving catechol monoalkyl ethers and to uncovering phenols from acetal-type protecting groups such as methoxymethyl (MOM), methoxyethoxymethyl (MEM), and tetrahydropyranyl (THP) chemoselectively.
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Affiliation(s)
- Dayong Sang
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Huaxin Yue
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China.,School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, Hubei 430205, P. R. China
| | - Zhengdong Zhao
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Pengtao Yang
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Juan Tian
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
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8
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1,6-Conjugate addition of C-nucleophiles to p-quinone methide surrogate: Synthesis of diarylpropanes. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.12.048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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9
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Jo H, Jang HY, Youn GS, Kim D, Lee CY, Jang JH, Choi SY, Jun JG, Park J. Hindsiipropane B alleviates HIV-1 Tat-induced inflammatory responses by suppressing HDAC6-NADPH oxidase-ROS axis in astrocytes. BMB Rep 2018; 51:394-399. [PMID: 29699604 PMCID: PMC6130829 DOI: 10.5483/bmbrep.2018.51.8.061] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Indexed: 01/29/2023] Open
Abstract
Human immunodeficiency virus-1 (HIV-1) transactivator of transcription (Tat) is an important viral factor in neuroinflammation. Hindsiipropane B, present in Celastrus hindsii, possesses various biological mechanisms including antiinflammatory activity. In this report, we explored the regulatory activity of hindsiipropane B on HIV-1 Tat-mediated chemokine production and its mode of action in astrocytes. Hindsiipropane B significantly alleviated HIV-1 Tat-mediated production of inflammatory chemokines, CCL2, CXCL8, and CXCL10. Hindsiipropane B inhibited expression of HDAC6, which is important regulator in HIV-1 Tat-mediated chemokine production. Hindsiipropane B diminished HIV-1 Tat-mediated reactive oxygen species (ROS) generation and NADPH oxidase activation/expression. Furthermore, hindsiipropane B inhibited HIV-1 Tat-mediated signaling cascades including MAPK, NF-κB, and AP-1. These data suggest that hindsiipropane B exerts its inhibitory effects on HIV-1 Tat-mediated chemokine production via down-regulating the HDAC6-NADPH oxidase-MAPK-NF-κB/AP-1 signaling axis, and could serve as a therapeutic lead compound against HIV-1 Tat-associated neuroinflammation. [BMB Reports 2018; 51(8): 394-399].
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Affiliation(s)
- Hyundong Jo
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
| | - Ha Young Jang
- Department of Chemistry and Institute of Applied Chemistry, Hallym University, Chunchon 24252, Korea
| | - Gi Soo Youn
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
| | - Donggyu Kim
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
| | - Chae Yeon Lee
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
| | - Jae Hee Jang
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
| | - Soo Young Choi
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
| | - Jong-Gab Jun
- Department of Chemistry and Institute of Applied Chemistry, Hallym University, Chunchon 24252, Korea
| | - Jinseu Park
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, Chunchon 24252, Korea
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Park HJ, Kim JK, Jun JG. Facile Synthesis and In Vitro
Nitric Oxide Production Inhibitory Activity of Benzoxazoles. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Hyeong Jin Park
- Department of Chemistry and Institute of Applied Chemistry; Hallym University; Chuncheon 24252 South Korea
| | - Jin-Kyung Kim
- Department of Biomedical Science, College of Natural Science; Catholic University of Daegu; Gyeungsan-Si 38430 South Korea
| | - Jong-Gab Jun
- Department of Chemistry and Institute of Applied Chemistry; Hallym University; Chuncheon 24252 South Korea
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Concise synthesis of the bioactive natural polyhydroxynaphthoate parvinaphthol B via Hauser-Kraus annulation. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.11.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Jang HY, Damodar K, Kim JK, Jun JG. Efficient Synthesis and In Vitro
Biological Evaluation of 2,5-Diaryloxazoles as Potential Nitric Oxide Production Inhibitors. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11331] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ha Young Jang
- Department of Chemistry and Institute of Applied Chemistry; Hallym University; Chuncheon 24252 Korea
| | - Kongara Damodar
- Department of Chemistry and Institute of Applied Chemistry; Hallym University; Chuncheon 24252 Korea
| | - Jin-Kyung Kim
- Department of Biomedical Science, College of Natural Science; Catholic University of Daegu; Gyeungsan-Si 38430 South Korea
| | - Jong-Gab Jun
- Department of Chemistry and Institute of Applied Chemistry; Hallym University; Chuncheon 24252 Korea
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Synthesis, Anti-inflammatory, and Arginase Inhibitory Activity of Piceatannol and Its Analogs. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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