1
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Yin CL, Qin RZ, Qin HL. One-Pot Three-Component Synthesis of Indolyl-4 H-chromene-3-sulfonyl Fluoride: A Class of Important Pharmacophore. J Org Chem 2024; 89:3618-3628. [PMID: 38358945 DOI: 10.1021/acs.joc.3c02706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
A one-pot, sequential three-component reaction between salicylaldehyde, indole, and 2-bromoprop-2-ene-1-sulfonyl fluoride (BPESF) has been demonstrated for the synthesis of sulfonyl fluoride substituted 4H-chromene derivatives in moderate to excellent yields (45%-94%). This one-pot sequential method features easily available starting materials, wide substrate scope, mild conditions, and great efficiency.
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Affiliation(s)
- Cheng-Lin Yin
- State Key Laboratory of Silicate Materials for Architectures; and School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Richard Zijian Qin
- State Key Laboratory of Silicate Materials for Architectures; and School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Hua-Li Qin
- State Key Laboratory of Silicate Materials for Architectures; and School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, People's Republic of China
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2
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Bhadoria D, Kumar R, Kant R, Kumar A. Regio- and Stereoselective Intermolecular Oxysulfonylation of Alkynes with 1,3-Diketones to Access ( Z)-β-Sulfonated Enethers. J Org Chem 2023; 88:13666-13677. [PMID: 37737722 DOI: 10.1021/acs.joc.3c01345] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
The first multicomponent regio- and stereoselective difunctionalization of alkynes via concomitant C-O and C-S bond formation using 1,3-diketones and sodium sulfinate has been developed for the synthesis of various sulfonated enethers. The viability of this strategy is unveiled by gram-scale, various synthetic modifications and late-stage functionalization. This transformation does not require any prefunctionalization, metal catalysts, and oxidants. The present operationally simple, efficient, and sustainable approach provides various functionalized olefins in a one-pot protocol with high Z-selectivity.
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Affiliation(s)
- Deepak Bhadoria
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rajesh Kumar
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
| | - Ruchir Kant
- Molecular and Structural Biology, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
| | - Atul Kumar
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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3
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Ryzhkova YE, Ryzhkov FV, Elinson MN, Vereshchagin AN, Novikov RA, Fakhrutdinov AN. Thermal Rearrangement of 5-(2-Hydroxy-6-oxocyclohexyl)-5H-chromeno[2,3-b]pyridines. Molecules 2023; 28:molecules28073139. [PMID: 37049908 PMCID: PMC10095857 DOI: 10.3390/molecules28073139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
Some of the most important transformations in organic chemistry are rearrangement reactions, which play a crucial role in increasing synthetic efficiency and molecular complexity. The development of synthetic strategies involving rearrangement reactions, which can accomplish synthetic goals in a very efficient manner, has been an evergreen topic in the synthetic chemistry community. Xanthenes, pyridin-2(1H)-ones, and 1,6-naphthyridines have a wide range of biological activities. In this work, we propose the thermal rearrangement of 7,9-dihalogen-substituted 5-(2-hydroxy-6-oxocyclohexyl)-5H-chromeno[2,3-b]pyridines in DMSO. Previously unknown 5,7-dihalogenated 5-(2,3,4,9-tetrahydro-1H-xanthen-9-yl)-6-oxo-1,6-dihydropyridines and 10-(3,5-dihalogen-2-hydroxyphenyl)-5,6,7,8,9,10-hexahydrobenzo[b][1,6]naphthyridines were synthesized with excellent yields (90–99%). The investigation of the transformation using 1H-NMR monitoring made it possible to confirm the ANRORC mechanism. The structures of synthesized compounds were confirmed by 2D-NMR spectroscopy.
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Affiliation(s)
- Yuliya E. Ryzhkova
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia
| | - Fedor V. Ryzhkov
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia
| | - Michail N. Elinson
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia
| | - Anatoly N. Vereshchagin
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia
| | - Roman A. Novikov
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia
| | - Artem N. Fakhrutdinov
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia
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4
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Synthesis, NMR spectral, docking and antimicrobial studies of some 12-aryl-9,9-dimethyl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one tosylhydrazones. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Sharma D, Kumar M, Das P. Synthetic approaches for cyclohexane-1,3-diones: A versatile precursor for bioactive molecules. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1946824] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Dharminder Sharma
- PG Department of Chemistry, JCDAV College Dasuya, Dasuya, Punjab, India
- Chemical Technology Department, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, India
| | - Manish Kumar
- Chemical Technology Department, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, India
- Department of Chemistry, Government College Seraj at Lambathach, Thunag, Himachal Pradesh, India
| | - Pralay Das
- Chemical Technology Department, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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6
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Gao YQ, Hou Y, Chen J, Zhen Y, Xu D, Zhang H, Wei H, Xie W. Asymmetric synthesis of 9-alkyl tetrahydroxanthenones via tandem asymmetric Michael/cyclization promoted by chiral phosphoric acid. Org Biomol Chem 2021; 19:348-354. [PMID: 33300926 DOI: 10.1039/d0ob02140g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tandem asymmetric Michael-addition/cyclization of cyclic 1,3-dicarbonyl compounds to β,γ-unsaturated α-ketoesters catalyzed by chiral phosphoric acid is presented. This protocol provides a facile approach for the construction of enantioenriched 9-alkyl tetrahydroxanthenones, an ubiquitous framework found in a number of natural products and pharmaceutical molecules, in high yields with good to high enantioselectivities.
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Affiliation(s)
- Yu-Qi Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China.
| | - Yi Hou
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China.
| | - Junhan Chen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China.
| | - Yanxia Zhen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China.
| | - Dongyang Xu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China.
| | - Hongli Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China.
| | - Hongbo Wei
- Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling, Shaanxi 712100, China
| | - Weiqing Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China. and Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling, Shaanxi 712100, China
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7
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Sharma D, Kumar M, Das P. Application of cyclohexane-1,3-diones for six-membered oxygen-containing heterocycles synthesis. Bioorg Chem 2020; 107:104559. [PMID: 33418315 DOI: 10.1016/j.bioorg.2020.104559] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/23/2020] [Accepted: 12/10/2020] [Indexed: 12/17/2022]
Abstract
Cyclohexan-1,3-dione derivatives are versatile scaffolds for the synthesis of a variety of value-added organic molecules including heterocycles and natural products. Six-membered oxygen heterocycles prepared from cyclohexan-1,3-diones are of much importance as they are intermediate for the synthesis of a number of natural products and several other valuable bioactive molecules which shows anti-viral, anti-bacterial, analgesic, antimalarial, anti-inflammatory, anti-allergic, anti-tumor and anti-cancer activities. These advantages have inspired us to write a detailed survey on the newly developed methods which are very essential in the construction of six-membered oxygen heterocycles. Further, the versatility in the chemistry of cyclohexan-1,3-dione and its derivatives is due to the presence of highly active methylene moiety and its active di-carbonyl groups. Recently, reactions of cyclohexane-1,3-dione and its derivatives with other substrates for instance aldehydes, malononitriles, NMSM, chalcones, isatin etc. have been established for the construction of a variety of six-membered oxygen heterocycles. The studies reported in this review article involved the synthesis of six-membered oxygen-containing heterocycles which includes 4H-chromen-5(6H)-one, 2H-xanthen-1(9H)-one, 2H-xanthen-1,8(5H,9H)-dione, 6H-chromen-2,5-dione derivatives and natural products having six-membered oxygen heterocycles from cyclohexane-1,3-dione and its derivatives as one of the substrate.
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Affiliation(s)
- Dharminder Sharma
- PG Department of Chemistry, JCDAV College Dasuya, Punjab 144205, India; Chemical Technology Department, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, HP, India.
| | - Manish Kumar
- Department of Chemistry, Govt. College Seraj at Lambathach, Distt. Mandi, 175048 HP, India; Chemical Technology Department, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, HP, India
| | - Pralay Das
- Chemical Technology Department, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, HP, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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8
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Yu X, Lan W, Li J, Bai H, Qin Z, Fu B. Enantioselective one-pot synthesis of 4 H-chromene derivatives catalyzed by a chiral Ni( ii) complex. RSC Adv 2020; 10:44437-44441. [PMID: 35517147 PMCID: PMC9058437 DOI: 10.1039/d0ra08906k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 11/16/2020] [Indexed: 12/15/2022] Open
Abstract
A Ni(ii)–bis(oxazoline) complex and p-TSOH are used to form enantioenriched 4H-chromenes from ortho-quinone methides (o-QMs) and dicarbonyls, providing the desired products in up to 95% ee. The method is compatible with various β-ketoester substrates, and the products obtained could be converted into biologically active 4H-chromene derivatives. A Ni(ii)–bis(oxazoline) complex and p-TSOH are used to form enantioenriched 4H-chromenes from ortho-quinone methides (o-QMs) and dicarbonyls, providing the desired products in up to 95% ee.![]()
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Affiliation(s)
- Xuan Yu
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- People's Repubic of China
| | - Wenjie Lan
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- People's Repubic of China
| | - Jiaqi Li
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- People's Repubic of China
| | - Hui Bai
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- People's Repubic of China
| | - Zhaohai Qin
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- People's Repubic of China
| | - Bin Fu
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- People's Repubic of China
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9
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Li Z, Wang W, Jian H, Li W, Dai B, He L. Synthesis of 9-phenol-substituted xanthenes by cascade O-insertion/1,6-conjugate addition of benzyne with ortho-hydroxyphenyl substituted para-quinone methides. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.04.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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10
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Deredas D, Łągiewka B, Maniukiewicz W. A facile synthesis of novel 9-substituted 2,3,4,9-tetrahydro-1H-xanthen-1-ones. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.01.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Momahed Heravi M, Zadsirjan V, Mollaiye M, Heydari M, Taheri Kal Koshvandi A. Salicylaldehydes as privileged synthons in multicomponent reactions. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4780] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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Taghartapeh MR, Noroozi Pesyan N, Rashidnejad H, Khavasi HR, Soltani A. Synthesis, spectroscopic and photophysical studies of xanthene derivatives. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.08.054] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Facial synthesis of trifluoromethylated xanthenes via tandem reaction of arynes and 2-trifluoroacetylphenols. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.06.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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14
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Jian H, Liu K, Wang WH, Li ZJ, Dai B, He L. Construction of 9-functionalized xanthenes via Diels-Alder reaction of stable ortho-quinone methides and arynes. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.02.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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15
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Sulfamic acid-catalyzed, environmentally benign synthesis of bis-tetronic acids at ambient temperature. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-016-2611-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Kupwade RV, Pandit KS, Desai UV, Kulkarni MA, Wadgaonkar PP. Diethylamine-catalyzed environmentally benign synthesis of 1-oxo-hexahydroxanthenes and bis-coumarins at ambient temperature. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2464-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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17
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He X, Tao J, Hu X, Wang H, Shang Y. FeCl3-Mediated One-Pot Domino Reactions for the Synthesis of 9-Aryl/9-Arylethynyl-2,3,4,9-tetrahydro-1H-xanthen-1-ones from Propargylic Amines/Diaryl Amines and 1,3-Cyclohexanediones. J Org Chem 2016; 81:2062-9. [DOI: 10.1021/acs.joc.6b00001] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xinwei He
- The Key Laboratory of Functional
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China
| | - Jiajia Tao
- The Key Laboratory of Functional
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China
| | - Xiaoqian Hu
- The Key Laboratory of Functional
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China
| | - Hui Wang
- The Key Laboratory of Functional
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China
| | - Yongjia Shang
- The Key Laboratory of Functional
Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based
Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China
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18
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Tajbakhsh M, Heidary M, Hosseinzadeh R, Amiri MA. FeCl 3 ·6H 2 O as a green and readily available catalyst for the synthesis of 1-oxo-hexahydroxanthenes by the condensation of salicylaldehydes with 1,3-diketones in aqueous media. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.11.088] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Yoshioka E. [Multi-component Reactions Based on Formal [2+2] Reaction of Benzyne with Formamide]. YAKUGAKU ZASSHI 2015; 135:1255-64. [PMID: 26521874 DOI: 10.1248/yakushi.15-00203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Arynes, such as benzyne, are highly strained and kinetically unstable intermediates that have been widely employed in organic synthesis. In particular, since the initial report regarding the in situ generation of arynes under neutral conditions from ortho-(trimethylsilyl)aryl triflates and fluoride ions in 1983, numerous nucleophilic additions to arynes have been utilized in the synthesis of carbocycles, heterocycles, and multi-substituted arenes. Recently, we reported the insertion of arynes into the π-bond in formamides, as well as related cascade reactions. First, we synthesized salicylaldehydes and aminophenols via the insertion of arynes into the C=O bond of sterically less hindered N,N-dimethylformamide (DMF). Notably, computational studies revealed the generation of unstable benzoxetene and ortho-quinone methide as reactive intermediates. We also studied multi-component coupling reactions leading to 2H-chromenes, coumarins, and xanthen-1-ones under mild conditions through the stepwise release of the strain energy in arynes. Furthermore, we studied the synthesis of O-heterocycles such as dihydrobenzofuran, benzofuran, and 4H-chromene as an application of our method. In this review, we will describe these studies in detail.
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Affiliation(s)
- Eito Yoshioka
- School of Pharmacy, Hyogo University of Health Science
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20
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2,3,4,9-Tetrahydro-9-(3-hydroxy-1,4-dioxo-1H-dihydro-naphthalen-2-yl)-8-methoxy-3,3-dimethyl-1H-xanthen-1-one. MOLBANK 2015. [DOI: 10.3390/m841] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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21
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Hameed A, Shafiq Z, Yaqub M, Hussain M, Hussain MA, Afzal M, Tahir MN, Naseer MM. Me3N-promoted synthesis of 2,3,4,4a-tetrahydroxanthen-1-one: preparation of thiosemicarbazone derivatives, their solid state self-assembly and antimicrobial properties. NEW J CHEM 2015. [DOI: 10.1039/c5nj01879j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thiosemicarbazones (5a–5j) have been synthesized from 2,3,4,4a-tetrahydroxanthen-1-one, obtained in high yield through Me3N-promoted domino Baylis–Hillman/oxa-Michael reaction. Their solid-state self-assembly and antimicrobial properties are studied.
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Affiliation(s)
- Aminah Hameed
- Institute of Chemical Sciences
- Organic Chemistry Division
- Bahauddin Zakariya University
- Multan 60800
- Pakistan
| | - Zahid Shafiq
- Institute of Chemical Sciences
- Organic Chemistry Division
- Bahauddin Zakariya University
- Multan 60800
- Pakistan
| | - Muhammad Yaqub
- Institute of Chemical Sciences
- Organic Chemistry Division
- Bahauddin Zakariya University
- Multan 60800
- Pakistan
| | - Mazhar Hussain
- Institute of Chemical Sciences
- Organic Chemistry Division
- Bahauddin Zakariya University
- Multan 60800
- Pakistan
| | | | - Muhammad Afzal
- Department of Chemistry
- University of Sargodha
- Sargodha
- Pakistan
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22
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Chandrasekhara Rao L, Satish Kumar N, Jagadeesh Babu N, Meshram HM. Reinvestigation of the reaction between 1,3-diketones and 2-hydroxyarylaldehydes: a short, atom-economical entry to tetrahydroxanthenones. RSC Adv 2015. [DOI: 10.1039/c5ra10675c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
A short and facile access to novel functionalized tetrahydroxanthenonesviaa DABCO-promoted tandem Knoevenagel condensation/hemiketalisation process from easily accessible substrates in a high yield.
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Affiliation(s)
- L. Chandrasekhara Rao
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad–500 007
- India
| | - N. Satish Kumar
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad–500 007
- India
| | - N. Jagadeesh Babu
- Laboratory of X-ray Crystallography
- CSIR-Indian Institute of Chemical Technology
- Hyderabad–500 007
- India
| | - H. M. Meshram
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad–500 007
- India
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23
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Thakur A, Linga Reddy P, Tripathi M, Rawat DS. Facile construction of 3-indolochromenes and 3-indoloxanthenes via EDDF catalyzed one-pot three component reactions. NEW J CHEM 2015. [DOI: 10.1039/c5nj01288k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
EDDF–ethylene glycol, an ambiphilic catalytic system has been employed for the mild and rapid synthesis of various 3-indolochromenes and 3-indoloxanthenesviaa one-pot MCR. Besides recyclability of the catalyst, the present method circumvents the formation of any by-products.
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Affiliation(s)
- Anuj Thakur
- Department of Chemistry
- University of Delhi
- Delhi-110007
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24
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Mohammadi R, Eidi E, Ghavami M, Kassaee MZ. Chitosan synergistically enhanced by successive Fe3O4 and silver nanoparticles as a novel green catalyst in one-pot, three-component synthesis of tetrahydrobenzo[α]xanthene-11-ones. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.06.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Boughton CK, Murphy KG. Can neuropeptides treat obesity? A review of neuropeptides and their potential role in the treatment of obesity. Br J Pharmacol 2014; 170:1333-48. [PMID: 23121386 DOI: 10.1111/bph.12037] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 10/17/2012] [Accepted: 10/17/2012] [Indexed: 12/16/2022] Open
Abstract
UNLABELLED Obesity is a major worldwide public health issue. The physiological systems that regulate body weight are thus of great interest as targets for anti-obesity agents. Peptidergic systems are critical to the regulation of energy homeostasis by key regions in the hypothalamus and brainstem. A number of neuropeptide systems have therefore been investigated as potential treatments for obesity. Blocking orexigenic peptide signals such as neuropeptide Y, melanin-concentrating hormone, orexins, relaxin-3 and galanin-like peptide or stimulating anorectic signalling pathways used by peptides such as the melanocortins, ciliary neurotrophic factor and brain-derived neurotrophic factor, are approaches that have shown some promise, but which have also highlighted possible concerns. Manipulation of central peptidergic systems poses a number of therapeutic problems, including brain access and side effects. Given that the homeostatic defence of body weight may limit the effectiveness of any single-target therapy developed, a combination therapy approach may offer the best hope for the effective prevention and treatment of obesity. LINKED ARTICLES This article is part of a themed section on Neuropeptides. To view the other articles in this section visit http://dx.doi.org/10.1111/bph.2013.170.issue-7.
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Affiliation(s)
- C K Boughton
- Section of Investigative Medicine, Imperial College London, Hammersmith Hospital Campus, London, UK
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26
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Sangsuwan R, Sangher S, Aree T, Mahidol C, Ruchirawat S, Kittakoop P. An organocatalyst from renewable materials for the synthesis of coumarins and chromenes: three-component reaction and multigram scale synthesis. RSC Adv 2014. [DOI: 10.1039/c4ra00673a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new concept of catalysts which are prepared from renewable materials is demonstrated for the synthesis of coumarins and chromenes.
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Affiliation(s)
- Rapeepat Sangsuwan
- Chulabhorn Graduate Institute
- Chemical Biology Program
- Bangkok 10210, Thailand
| | | | - Thammarat Aree
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok 10330, Thailand
| | - Chulabhorn Mahidol
- Chulabhorn Graduate Institute
- Chemical Biology Program
- Bangkok 10210, Thailand
- Chulabhorn Research Institute
- Bangkok 10210, Thailand
| | - Somsak Ruchirawat
- Chulabhorn Graduate Institute
- Chemical Biology Program
- Bangkok 10210, Thailand
- Chulabhorn Research Institute
- Bangkok 10210, Thailand
| | - Prasat Kittakoop
- Chulabhorn Graduate Institute
- Chemical Biology Program
- Bangkok 10210, Thailand
- Chulabhorn Research Institute
- Bangkok 10210, Thailand
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27
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Prasad D, Preetam A, Nath M. l-Proline-accelerated, eco-friendly synthesis of 9-substituted-2,3,4,9-tetrahydro-1H-xanthen-1-ones under mild conditions. CR CHIM 2013. [DOI: 10.1016/j.crci.2013.05.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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28
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Wan Y, Zhang XX, Wang C, Zhao LL, Chen LF, Liu GX, Huang SY, Yue SN, Zhang WL, Wu H. The first example of glucose-containing Brønsted acid synthesis and catalysis: efficient synthesis of tetrahydrobenzo[α]xanthens and tetrahydrobenzo[α]acridines in water. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.03.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Ganguly NC, Roy S, Mondal P, Saha R. An efficient one-pot organocatalytic synthesis of 9-(1H-indol-3-yl)-xanthen-4-(9H)-ones under mild aqueous micellar conditions. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.10.055] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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30
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He L, Pian JX, Zhang J, Li YZ. Highly efficient synthesis of 9-aminoxanthenes via the tandem reaction of arynes with salicyl N-tosylimines. CHINESE CHEM LETT 2012. [DOI: 10.1016/j.cclet.2012.11.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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31
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Noroozi Pesyan N, Golsanamloo V, Ganbari S, Şahin E. A simple route for the synthesis of 3,3,3′,3′-tetramethyl-2,3,3′,4′-tetrahydro-1H,1′H-[4,9′-bixanthene]-1,1′(2′H,9′H)-dione and its derivatives catalyzed by Mn2+ and other transition metal cations. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.05.116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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32
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Affiliation(s)
- Alexander Dömling
- Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA.
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33
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Omori N, Kouyama N, Yukimasa A, Watanabe K, Yokota Y, Tanioka H, Nambu H, Yukioka H, Sato N, Tanaka Y, Sekiguchi K, Okuno T. Hit to lead SAR study on benzoxazole derivatives for an NPY Y5 antagonist. Bioorg Med Chem Lett 2012; 22:2020-3. [PMID: 22300657 DOI: 10.1016/j.bmcl.2012.01.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 01/06/2012] [Accepted: 01/10/2012] [Indexed: 01/03/2023]
Abstract
We report a hit to lead study on a novel benzoxazole NPY Y5 antagonist. Starting from HTS hit 1, structure-activity relationships were developed. Compound 12 showed reduction of food intake and a tendency to suppress body weight gain over the 21-day experimental period.
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Affiliation(s)
- Naoki Omori
- Medicinal Research Laboratories, Shionogi & Co., Ltd, 1-1, Futaba-cho 3-chome, Toyonaka, Osaka 561-0825, Japan.
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34
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Yulyaningsih E, Zhang L, Herzog H, Sainsbury A. NPY receptors as potential targets for anti-obesity drug development. Br J Pharmacol 2011; 163:1170-202. [PMID: 21545413 DOI: 10.1111/j.1476-5381.2011.01363.x] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The neuropeptide Y system has proven to be one of the most important regulators of feeding behaviour and energy homeostasis, thus presenting great potential as a therapeutic target for the treatment of disorders such as obesity and at the other extreme, anorexia. Due to the initial lack of pharmacological tools that are active in vivo, functions of the different Y receptors have been mainly studied in knockout and transgenic mouse models. However, over recent years various Y receptor selective peptidic and non-peptidic agonists and antagonists have been developed and tested. Their therapeutic potential in relation to treating obesity and other disorders of energy homeostasis is discussed in this review.
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Affiliation(s)
- Ernie Yulyaningsih
- Neuroscience Research Program, Garvan Institute of Medical Research, St Vincent's Hospital, Darlinghurst, Sydney, NSW, Australia
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35
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Yoshioka E, Kohtani S, Miyabe H. A Multicomponent Coupling Reaction Induced by Insertion of Arynes into the CO Bond of Formamide. Angew Chem Int Ed Engl 2011; 50:6638-42. [PMID: 21626634 DOI: 10.1002/anie.201102088] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Indexed: 12/18/2022]
Affiliation(s)
- Eito Yoshioka
- School of Pharmacy, Hyogo University of Health Sciences, 1-3-6, Minatojima, Chuo-ku, Kobe, 650-8530, Japan
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36
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Yoshioka E, Kohtani S, Miyabe H. A Multicomponent Coupling Reaction Induced by Insertion of Arynes into the CO Bond of Formamide. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102088] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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37
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Ogawa S, Iida N, Tokunaga E, Shiro M, Shibata N. Cinchona Alkaloid/TiIV-Catalyzed Enantioselective Enamine-Trifluoropyruvate Condensation-Cyclization Reaction and Its Application to Drug-like Heterocycles. Chemistry 2010; 16:7090-5. [DOI: 10.1002/chem.201000911] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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38
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Huang X, Zhang T. Cascade nucleophilic addition-cyclic Michael addition of arynes and phenols/anilines bearing ortho alpha,beta-unsaturated groups: facile synthesis of 9-functionalized xanthenes/acridines. J Org Chem 2010; 75:506-9. [PMID: 20020766 DOI: 10.1021/jo902311a] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A facile synthesis of xanthenes and acridines based on a cascade nucleophilic addition-cyclic Michael addition process of arynes and phenols/anilines substituted with alpha,beta-unsaturated groups at the ortho positions is described. The reaction has also been successfully extended to the synthesis of 9-spiro-xanthene and acridine derivatives with potential biochemical interest.
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Affiliation(s)
- Xian Huang
- Department of Chemistry, Zhejiang University (Xixi Campus), Hangzhou 310028, People's Republic of China.
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39
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Zhang ZH, Wang HJ, Ren XQ, Zhang YY. A facile and efficient method for synthesis of xanthone derivatives catalyzed by HBF4/SiO2 under solvent-free conditions. MONATSHEFTE FUR CHEMIE 2009. [DOI: 10.1007/s00706-009-0204-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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40
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Lian C, Lu P, Zhu Y. 7-Bromo-4-(7-bromo-3,3-dimethyl-1-oxo-2,3,4,9-tetra-hydro-1H-xanthen-9-yl)-3,3-dimethyl-2,3-dihydroxanthen-1(4H)-one ethanol solvate. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o2448. [PMID: 21577903 PMCID: PMC2970291 DOI: 10.1107/s1600536809035922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2009] [Accepted: 09/05/2009] [Indexed: 11/26/2022]
Abstract
The title compound, C30H26Br2O4·C2H5OH, was synthesized from the reaction between 5-bromosalicybenzaldehyde and 5,5-dimethyl-1,3-cyclohexanedione. The crystal packing is stabilized by intermolecular O—H⋯O hydrogen bonds and C—H⋯O interactions.
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Affiliation(s)
- Chaomei Lian
- School of Chemistry and Environment, South China Normal University, Guangzhou 510006, People's Republic of China
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41
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Takahashi H, Haga Y, Shibata T, Nonoshita K, Sakamoto T, Moriya M, Ohe T, Chiba M, Mitobe Y, Kitazawa H, Iwaasa H, Ishihara A, Ishii Y, Kanatani A, Fukami T. Identification of positron emission tomography ligands for NPY Y5 receptors in the brain. Bioorg Med Chem Lett 2009; 19:5436-9. [DOI: 10.1016/j.bmcl.2009.07.103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2009] [Revised: 07/21/2009] [Accepted: 07/22/2009] [Indexed: 12/01/2022]
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42
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Discovery of trans-N-[1-(2-fluorophenyl)-3-pyrazolyl]-3-oxospiro[6-azaisobenzofuran-1(3H),1'-cyclohexane]-4'-carboxamide, a potent and orally active neuropeptide Y Y5 receptor antagonist. Bioorg Med Chem 2009; 17:6971-82. [PMID: 19720539 DOI: 10.1016/j.bmc.2009.08.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2009] [Revised: 08/05/2009] [Accepted: 08/05/2009] [Indexed: 11/23/2022]
Abstract
A series of trans-3-oxospiro[(aza)isobenzofuran-1(3H),1'-cyclohexane]-4'-carboxamide derivatives were synthesized to identify potent NPY Y5 receptor antagonists. Of the compounds, 21j showed high Y5 binding affinity, metabolic stability and brain and cerebrospinal fluid (CSF) penetration, and low susceptibility to P-glycoprotein transporters. Oral administration of 21j significantly inhibited the Y5 agonist-induced food intake in rats with a minimum effective dose of 1mg/kg. This compound was selected for proof-of-concept studies in human clinical trials.
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43
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Sakamoto T, Moriya M, Tsuge H, Takahashi T, Haga Y, Nonoshita K, Okamoto O, Takahashi H, Sakuraba A, Hirohashi T, Shibata T, Kanno T, Ito J, Iwaasa H, Gomori A, Ishihara A, Fukuroda T, Kanatani A, Fukami T. Novel orally active NPY Y5 receptor antagonists: Synthesis and structure-activity relationship of spiroindoline class compounds. Bioorg Med Chem 2009; 17:5015-26. [PMID: 19525116 DOI: 10.1016/j.bmc.2009.05.064] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2009] [Revised: 05/25/2009] [Accepted: 05/27/2009] [Indexed: 10/20/2022]
Abstract
Spiroindoline urea derivatives, designed to act as NPY Y5 receptor antagonists, were synthesized and their structure-activity relationships were investigated. Of these derivatives, compound 3a showed good Y5 binding affinity with favorable pharmacokinetic properties. Compound 3a significantly inhibited bPP Y5 agonist-induced food intake in rats, and suppressed body weight gain in DIO mice.
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Affiliation(s)
- Toshihiro Sakamoto
- Tsukuba Research Institute, Merck Research Laboratories, Banyu Pharmaceutical Co., Ltd, Okubo-3, Tsukuba, Ibaraki 300-2611, Japan.
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44
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Takahashi T, Haga Y, Sakamoto T, Moriya M, Okamoto O, Nonoshita K, Shibata T, Suga T, Takahashi H, Hirohashi T, Sakuraba A, Gomori A, Iwaasa H, Ohe T, Ishihara A, Ishii Y, Kanatani A, Fukami T. Aryl urea derivatives of spiropiperidines as NPY Y5 receptor antagonists. Bioorg Med Chem Lett 2009; 19:3511-6. [PMID: 19464889 DOI: 10.1016/j.bmcl.2009.05.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2009] [Revised: 05/01/2009] [Accepted: 05/02/2009] [Indexed: 11/16/2022]
Abstract
Continuing medicinal chemistry studies to identify spiropiperidine-derived NPY Y5 receptor antagonists are described. Aryl urea derivatives of a variety of spiropiperidines were tested for their NPY Y5 receptor binding affinities. Of the spiropiperidines so far examined, spiro[3-oxoisobenzofurane-1(3H),4'-piperidine] was a useful scaffold for producing orally active NPY Y5 receptor antagonists. Oral administration of 5c significantly inhibited the Y5 agonist-induced food intake in rats with a minimum effective dose of 3mg/kg. In addition, this compound was efficacious in decreasing body weight in diet-induced obese mice.
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Affiliation(s)
- Toshiyuki Takahashi
- Tsukuba Research Institute, Banyu Pharmaceutical Co., Ltd, Okubo 3, Tsukuba 300-2611, Japan
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45
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Sakamoto T, Moriya M, Haga Y, Takahashi T, Shibata T, Okamoto O, Nonoshita K, Kitazawa H, Hidaka M, Gomori A, Iwaasa H, Ishihara A, Kanatani A, Fukami T, Gao YD, Macneil DJ, Yang L. Identification of novel and orally active spiroindoline NPY Y5 receptor antagonists. Bioorg Med Chem Lett 2009; 19:1564-8. [PMID: 19243937 DOI: 10.1016/j.bmcl.2009.02.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Revised: 02/04/2009] [Accepted: 02/07/2009] [Indexed: 11/24/2022]
Abstract
A series of spiroindoline-3,4'-piperidine derivatives were synthesized and evaluated for their binding affinities and antagonistic activities at Y5 receptors. Potent Y5 antagonists were tested for their oral bioavailabilities and brain penetration in rats. Some of the antagonists showed good oral bioavailability and/or good brain penetration. In particular, compound 6e was orally bioavailable and brain penetrant, and oral administration of 6e inhibited bPP-induced food intake in rats with a minimum effective dose of 10mg/kg.
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Affiliation(s)
- Toshihiro Sakamoto
- Tsukuba Research Institute, Banyu Pharmaceutical Co., Ltd, Okubo 3, Tsukuba 300-2611, Japan
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46
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Sato N, Jitsuoka M, Ishikawa S, Nagai K, Tsuge H, Ando M, Okamoto O, Iwaasa H, Gomori A, Ishihara A, Kanatani A, Fukami T. Discovery of substituted 2,4,4-triarylimidazoline derivatives as potent and selective neuropeptide Y Y5 receptor antagonists. Bioorg Med Chem Lett 2009; 19:1670-4. [PMID: 19233647 DOI: 10.1016/j.bmcl.2009.01.101] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Revised: 01/28/2009] [Accepted: 01/30/2009] [Indexed: 11/18/2022]
Abstract
Novel imidazoline derivatives were discovered to be potent neuropeptide Y Y5 receptor antagonists. High-throughput screening of Merck sample collections against the human Y5 receptor resulted in the identification of 2,4,4-triphenylimidazoline (1), which had an IC(50) of 54nM. Subsequent optimization led to the identification of several potent derivatives.
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Affiliation(s)
- Nagaaki Sato
- Tsukuba Research Institute, Merck Research Laboratories, Banyu Pharmaceutical Company, Ltd, 3 Okubo, Tsukuba 300-2611, Japan
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