1
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Xu W, Li X, Zou L, Li X, Zhang Z, Ali S, Wang Z, Li P, Zheng H. Access to Fully Substituted Dihydroindazoles Via Hexadehydro-Diels-Alder/[3 + 2] Cycloaddition. J Org Chem 2023; 88:14736-14747. [PMID: 37819716 DOI: 10.1021/acs.joc.3c01901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
A cascade hexadehydro-Diels-Alder (HDDA)/[3 + 2] cycloaddition reaction between tetrayne and N,N'-cyclic acylhydrazone is described. This strategy allows the efficient construction of fully substituted 2,3-dihydro-1H-indazole scaffolds which have insecticidal activity against the third instar larvae of Mythimna separata.
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Affiliation(s)
- Weigang Xu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Xiuhuan Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Luyao Zou
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Xiaoli Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Zhiqiang Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Sajjad Ali
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Zhengshen Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Pengfei Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Huaiji Zheng
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
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2
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Kim K, Kim JH, Choi H, Lee B, Lee J, Ok KM, Lee TH, Kim H. Synthesis and Anti-Inflammatory Activity of N(2)-Arylindazol-3(2 H)-One Derivatives: Copper-Promoted Direct N-Arylation via Chan-Evans-Lam Coupling. Molecules 2023; 28:6706. [PMID: 37764482 PMCID: PMC10538006 DOI: 10.3390/molecules28186706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/12/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
Inflammatory-related diseases are becoming increasingly prevalent, leading to a growing focus on the development of anti-inflammatory agents, with a particular emphasis on creating novel structural compounds. In this study, we present a highly efficient synthetic method for direct N-arylation to produce a variety of N(2)-arylindazol-3(2H)-ones 3, which exhibit anti-inflammatory activity. The Chan-Evans-Lam (CEL) coupling of N(1)-benzyl-indazol-3-(2H)-ones 1 with arylboronic acids 2 in the presence of a copper complex provided the corresponding N(2)-arylindazol-3(2H)-ones 3 in good-to-excellent yields, as identified with NMR, MS, and X-ray crystallography techniques. The cell viability and anti-inflammatory effects of the synthesized compounds (3 and 5) were briefly assessed using the MTT method and Griess assay. Among them, compounds 5 exhibited significant anti-inflammatory effects with negligible cell toxicity.
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Affiliation(s)
- Kyungmin Kim
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Kyung Hee University, Yongin-si 17104, Gyeonggi, Republic of Korea
| | - Jeong Ho Kim
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Kyung Hee University, Yongin-si 17104, Gyeonggi, Republic of Korea
| | - Heejae Choi
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Kyung Hee University, Yongin-si 17104, Gyeonggi, Republic of Korea
| | - Byeongno Lee
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Kyung Hee University, Yongin-si 17104, Gyeonggi, Republic of Korea
| | - Jihyun Lee
- Department of Chemistry, Sogang University, Seoul 04107, Republic of Korea
| | - Kang Min Ok
- Department of Chemistry, Sogang University, Seoul 04107, Republic of Korea
| | - Tae Hoon Lee
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Kyung Hee University, Yongin-si 17104, Gyeonggi, Republic of Korea
| | - Hakwon Kim
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Kyung Hee University, Yongin-si 17104, Gyeonggi, Republic of Korea
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3
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Bao Y, Deng Z, Feng J, Zhu W, Li J, Wan J, Liu G. A B 2(OH) 4-Mediated Synthesis of 2-Substituted Indazolone and Its Application in a DNA-Encoded Library. Org Lett 2020; 22:6277-6282. [PMID: 32806212 DOI: 10.1021/acs.orglett.0c02032] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Indazolone cores are among the most common structural components in medicinal chemistry and can be found in many biologically active molecules. In this report, a mild and efficient approach to 2-substituted indazolones via B2(OH)4-mediated reductive N-N bond formation is developed. This strategy features mild conditions, no request for a metal catalyst, and a wide scope for both aliphatic and aromatic amines. Meanwhile, this method was further successfully applied on DNA to construct indazolone cores for a DNA-encoded library. This will enable the production of a very attractive indazolone-cored library from simple amines and scaffolds, which will provide considerable diversity.
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Affiliation(s)
- Yapeng Bao
- Discovery Chemistry Unit, HitGen Inc., Building 6, No. 8 Huigu 1st East Road, Tianfu International Bio-Town, Shuangliu District, Chengdu 610200, Sichuan, P. R. China
| | - Zongfa Deng
- Discovery Chemistry Unit, HitGen Inc., Building 6, No. 8 Huigu 1st East Road, Tianfu International Bio-Town, Shuangliu District, Chengdu 610200, Sichuan, P. R. China
| | - Jing Feng
- Discovery Chemistry Unit, HitGen Inc., Building 6, No. 8 Huigu 1st East Road, Tianfu International Bio-Town, Shuangliu District, Chengdu 610200, Sichuan, P. R. China
| | - Weiwei Zhu
- Discovery Chemistry Unit, HitGen Inc., Building 6, No. 8 Huigu 1st East Road, Tianfu International Bio-Town, Shuangliu District, Chengdu 610200, Sichuan, P. R. China
| | - Jin Li
- Discovery Chemistry Unit, HitGen Inc., Building 6, No. 8 Huigu 1st East Road, Tianfu International Bio-Town, Shuangliu District, Chengdu 610200, Sichuan, P. R. China
| | - Jinqiao Wan
- Discovery Chemistry Unit, HitGen Inc., Building 6, No. 8 Huigu 1st East Road, Tianfu International Bio-Town, Shuangliu District, Chengdu 610200, Sichuan, P. R. China
| | - Guansai Liu
- Discovery Chemistry Unit, HitGen Inc., Building 6, No. 8 Huigu 1st East Road, Tianfu International Bio-Town, Shuangliu District, Chengdu 610200, Sichuan, P. R. China
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4
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Raut S, Tidke A, Dhotre B, Arif PM. Different Strategies to the Synthesis of Indazole and its Derivatives: A Review. MINI-REV ORG CHEM 2020. [DOI: 10.2174/1570193x16666190430160324] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this review, works of various researchers working on the synthesis of indazole and their related compound are cited. The review comprises of methodologies for the synthesis of 1H and 2H indazole derivatives, along with some pharmacological activities. In this review, research papers published in various peer-reviewed journals between the year 2000 and year 2017 are enlisted in alphabetical order.
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Affiliation(s)
- Santosh Raut
- Maulana Azad College and Research Center, Rouza Bagh, Aurangabad (M.S.), India
| | - Atul Tidke
- Maulana Azad College and Research Center, Rouza Bagh, Aurangabad (M.S.), India
| | | | - Pathan Mohd Arif
- Maulana Azad College and Research Center, Rouza Bagh, Aurangabad (M.S.), India
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5
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Ghosh P, Mondal S, Hajra A. tert-Butyl Hydroperoxide-Mediated Oxo-Sulfonylation of 2H-Indazoles with Sulfinic Acid toward Indazol-3(2H)-ones. Org Lett 2020; 22:1086-1090. [DOI: 10.1021/acs.orglett.9b04617] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Payel Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Susmita Mondal
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
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6
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Yang T, Lu H, Qiu R, Hong L, Yin S, Kambe N. Photocatalyst‐free Synthesis of Indazolones under CO
2
Atmosphere. Chem Asian J 2019; 14:1436-1442. [DOI: 10.1002/asia.201900306] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Tianbao Yang
- State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan University Changsha 410082 P. R. China
| | - Huiai Lu
- College of BiologyHuazhong University of Science and Technology Wuhan 430074 Hubei P. R. China
| | - Renhua Qiu
- State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan University Changsha 410082 P. R. China
- Graduate School of EngineeringOsaka University Suita Osaka 565-0871 Japan
| | - Ling Hong
- College of BiologyHuazhong University of Science and Technology Wuhan 430074 Hubei P. R. China
| | - Shuang‐Feng Yin
- State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan University Changsha 410082 P. R. China
| | - Nobuaki Kambe
- State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan University Changsha 410082 P. R. China
- Graduate School of EngineeringOsaka University Suita Osaka 565-0871 Japan
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7
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Liu S, Xu L, Wei Y. One-Pot, Multistep Reactions for the Modular Synthesis of N,N′-Diarylindazol-3-ones. J Org Chem 2018; 84:1596-1604. [DOI: 10.1021/acs.joc.8b02548] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Shuai Liu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xin-jiang Bingtuan, Shihezi University, Shihezi 832003, China
| | - Liang Xu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xin-jiang Bingtuan, Shihezi University, Shihezi 832003, China
| | - Yu Wei
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xin-jiang Bingtuan, Shihezi University, Shihezi 832003, China
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8
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan India
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9
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Zhu JS, Kraemer N, Li CJ, Haddadin MJ, Kurth MJ. Photochemical Preparation of 1,2-Dihydro-3 H-indazol-3-ones in Aqueous Solvent at Room Temperature. J Org Chem 2018; 83:15493-15498. [PMID: 30468072 DOI: 10.1021/acs.joc.8b02356] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
o-Nitrosobenzaldehyde is a reactive intermediate useful in the synthesis of nitrogen heterocycles. Previous strategies for using o-nitrosobenzaldehyde involve its isolation via chromatography and/or formation under harsh conditions. Herein, this intermediate was photochemically generated in situ from o-nitrobenzyl alcohols in a mild, efficient manner for the construction of 1,2-dihydro-3 H-indazol-3-ones using an aqueous solvent at room temperature. This convenient reaction offers several advantages over reported methods. The commercially available photoreactor employed 3 × 18 W bulbs outputting broad emission above 365 nm.
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Affiliation(s)
- Jie S Zhu
- Department of Chemistry , University of California Davis , 1 Shields Avenue , Davis , California 95616 , United States
| | - Niklas Kraemer
- Department of Chemistry , University of California Davis , 1 Shields Avenue , Davis , California 95616 , United States
| | - Clarabella J Li
- Department of Chemistry , University of California Davis , 1 Shields Avenue , Davis , California 95616 , United States
| | - Makhluf J Haddadin
- Department of Chemistry , American University of Beirut , Beirut , Lebanon
| | - Mark J Kurth
- Department of Chemistry , University of California Davis , 1 Shields Avenue , Davis , California 95616 , United States
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10
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Ramanathan M, Liu ST. Preparation of Quinazolinoquinazolinones via a Cascade Approach. J Org Chem 2018; 83:14138-14145. [DOI: 10.1021/acs.joc.8b02239] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Mani Ramanathan
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Shiuh-Tzung Liu
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
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11
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Zhu JS, Kraemer N, Shatskikh ME, Li CJ, Son JH, Haddadin MJ, Tantillo DJ, Kurth MJ. N-N Bond Formation between Primary Amines and Nitrosos: Direct Synthesis of 2-Substituted Indazolones with Mechanistic Insights. Org Lett 2018; 20:4736-4739. [PMID: 30067041 DOI: 10.1021/acs.orglett.8b01655] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A concise, one-step route to indazolones from primary alkyl amines and o-nitrobenzyl alcohols is reported. The key step in this readily scalable indazolone forming process involves base-mediated in situ o-nitrobenzyl alcohol → o-nitrosobenzaldehyde conversion. Although this functional group interconversion is known to be useful for 2 H-indazole synthesis, its reactivity was modulated for indazolone formation.
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Affiliation(s)
- Jie S Zhu
- Department of Chemistry , University of California Davis , 1 Shields Avenue , Davis , California 95616 , United States
| | - Niklas Kraemer
- Department of Chemistry , University of California Davis , 1 Shields Avenue , Davis , California 95616 , United States
| | - Marina E Shatskikh
- Department of Chemistry , University of California Davis , 1 Shields Avenue , Davis , California 95616 , United States
| | - Clarabella J Li
- Department of Chemistry , University of California Davis , 1 Shields Avenue , Davis , California 95616 , United States
| | - Jung-Ho Son
- Department of Chemistry , University of California Davis , 1 Shields Avenue , Davis , California 95616 , United States
| | - Makhluf J Haddadin
- Department of Chemistry , American University of Beirut , Beirut , Lebanon
| | - Dean J Tantillo
- Department of Chemistry , University of California Davis , 1 Shields Avenue , Davis , California 95616 , United States
| | - Mark J Kurth
- Department of Chemistry , University of California Davis , 1 Shields Avenue , Davis , California 95616 , United States
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12
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Chen WL, Wu SY, Mo XL, Wei LX, Liang C, Mo DL. Synthesis of 2-Aminobenzonitriles through Nitrosation Reaction and Sequential Iron(III)-Catalyzed C–C Bond Cleavage of 2-Arylindoles. Org Lett 2018; 20:3527-3530. [DOI: 10.1021/acs.orglett.8b01294] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Wei-Li Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin, 541004, China
| | - Si-Yi Wu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin, 541004, China
| | - Xue-Ling Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin, 541004, China
| | - Liu-Xu Wei
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin, 541004, China
| | - Cui Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin, 541004, China
| | - Dong-Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin, 541004, China
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13
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Palladium-catalyzed cyclizative carbonylation of azobenzenes toward 3H-Indazol-3-ones using formic acid as CO source. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.02.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Elkaeed EB, An J, Beauchemin AM. Synthesis of Indazolones via Friedel–Crafts Cyclization of Blocked (Masked) N-Isocyanates. J Org Chem 2017; 82:9890-9897. [DOI: 10.1021/acs.joc.7b01607] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eslam B. Elkaeed
- Centre
for Catalysis Research and Innovation, Department of Chemistry and
Biomolecular Sciences, University of Ottawa, 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
- Department
of Organic Chemistry, Faculty of Pharmacy, Al-Azhar University, Cairo 11884, Egypt
| | - Jing An
- Centre
for Catalysis Research and Innovation, Department of Chemistry and
Biomolecular Sciences, University of Ottawa, 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
| | - André M. Beauchemin
- Centre
for Catalysis Research and Innovation, Department of Chemistry and
Biomolecular Sciences, University of Ottawa, 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
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15
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Remennikov GY. Synthesis of fused pyrazoles via intramolecular cyclization of appropriately ortho-substituted nitroarenes and nitroheteroarenes. Chem Heterocycl Compd (N Y) 2017. [DOI: 10.1007/s10593-017-2028-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Park SW, Choi H, Lee JH, Lee YJ, Ku JM, Lee SY, Nam TG. IBX-mediated synthesis of indazolone via oxidative N–N bond formation and unexpected formation of quinazolin-4-one: in situ generation of formaldehyde from dimethoxyethane. Arch Pharm Res 2016; 39:302-9. [DOI: 10.1007/s12272-016-0706-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 01/10/2016] [Indexed: 10/22/2022]
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17
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Lin W, Hu MH, Feng X, Cao CP, Huang ZB, Shi DQ. An efficient and convenient synthesis of heterocycle-fused indazoles via the N–N bond forming reaction of nitroarenes induced by low-valent titanium reagent. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.074] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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An efficient synthesis of 2H-indazoles via reductive cyclization of 2-nitrobenzylamines induced by low-valent titanium reagent. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.043] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Welsch SJ, Kalinski C, Umkehrer M, Ross G, Kolb J, Burdack C, Wessjohann LA. Palladium and copper catalyzed cyclizations of hydrazine derived Ugi products: facile synthesis of substituted indazolones and hydroxytriazafluorendiones. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.02.095] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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20
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Li C, Zhang T, Zeng Z, Liu X, Zhao Y, Zhang B, Feng Y. A New Route to Indazolone via Amidation Reaction of o-Carboxyazobenzene. Org Lett 2012; 14:479-81. [DOI: 10.1021/ol203020x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chengjie Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Tianyi Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Zhe Zeng
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Xiujun Liu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Yunfeng Zhao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Bao Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Yaqing Feng
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
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21
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Nadin A, Hattotuwagama C, Churcher I. Lead-oriented synthesis: a new opportunity for synthetic chemistry. Angew Chem Int Ed Engl 2012; 51:1114-22. [PMID: 22271624 DOI: 10.1002/anie.201105840] [Citation(s) in RCA: 310] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Indexed: 12/12/2022]
Abstract
The pharmaceutical industry remains solely reliant on synthetic chemistry methodology to prepare compounds for small-molecule drug discovery programmes. The importance of the physicochemical properties of these molecules in determining their success in drug development is now well understood but we present here data suggesting that much synthetic methodology is unintentionally predisposed to producing molecules with poorer drug-like properties. This bias may have ramifications to the early hit- and lead-finding phases of the drug discovery process when larger numbers of compounds from array techniques are prepared. To address this issue we describe for the first time the concept of lead-oriented synthesis and the opportunity for its adoption to increase the range and quality of molecules used to develop new medicines.
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Affiliation(s)
- Alan Nadin
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, UK
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22
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Nadin A, Hattotuwagama C, Churcher I. Leitstruktur-orientierte Synthese: eine Alternative für die Synthesechemie. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201105840] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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23
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Tanimori S, Kobayashi Y, Iesaki Y, Ozaki Y, Kirihata M. Copper-catalyzed synthesis of substituted indazoles from 2-chloroarenes at low catalyst-loading. Org Biomol Chem 2012; 10:1381-7. [DOI: 10.1039/c1ob05875d] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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An efficient one-step synthesis of 2-arylquinolin-4(1H)-ones with the aid of a low-valent titanium reagent. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.08.089] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Wang JX, Shen GL, Shi DQ. An efficient three-component synthesis of hexahydroquinoline derivatives in ionic liquid. J Heterocycl Chem 2011. [DOI: 10.1002/jhet.703] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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26
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Shi DQ, Zou Y, Hu Y, Wu H. Improved synthesis of dihydrothiophenes derivatives under ultrasound irradiation. J Heterocycl Chem 2011. [DOI: 10.1002/jhet.662] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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27
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28
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Dolle RE, Bourdonnec BL, Worm K, Morales GA, Thomas CJ, Zhang W. Comprehensive survey of chemical libraries for drug discovery and chemical biology: 2009. JOURNAL OF COMBINATORIAL CHEMISTRY 2010; 12:765-806. [PMID: 20923157 PMCID: PMC4140011 DOI: 10.1021/cc100128w] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Roland E Dolle
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, USA.
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29
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Donald MB, Conrad WE, Oakdale JS, Butler JD, Haddadin MJ, Kurth MJ. Nucleophilic substitution of oxazino-/oxazolino-/benzoxazin [3,2-b]indazoles: an effective route to 1H-indazolones. Org Lett 2010; 12:2524-7. [PMID: 20438102 PMCID: PMC3108055 DOI: 10.1021/ol100751n] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A variety of nucleophiles, thiolates, alkoxides, amines, iodide, and cyanide, react with oxazino-, oxazolino-, and benzoxazin[3,2-b]indazoles under microwave conditions to yield a diverse set of 2-substituted 1H-indazolones. The synthetic utility of these indazoles is further demonstrated by ANRORC (addition of the nucleophile, ring-opening, and ring closure) reactions to yield isomeric pyrazoloindazolones by a process wherein iodide acts first as a nucleophile and subsequently as a leaving group.
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Affiliation(s)
- Michael B. Donald
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616
| | - Wayne E. Conrad
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616
| | - James S. Oakdale
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616
| | - Jeffrey D. Butler
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616
| | | | - Mark J. Kurth
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616
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30
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Dong C, Xie L, Mou X, Zhong Y, Su W. Facile synthesis of 1,3,4-benzotriazepines and 1-arylamide-1H-indazoles via palladium-catalyzed cyclization of aryl isocyanates and aryl hydrazones under microwave irradiation. Org Biomol Chem 2010; 8:4827-30. [DOI: 10.1039/c0ob00021c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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