1
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Hu W, Diao X, Yuan J, Liang W, Yang W, Yang L, Ma J, Zhang S. Photoredox-Catalyzed Tandem Cyclization of Enaminones with N-Sulfonylaminopyridinium Salts toward the Synthesis of 3-Sulfonaminated Chromones. J Org Chem 2024; 89:644-655. [PMID: 38088130 DOI: 10.1021/acs.joc.3c02399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
A photoredox-catalyzed intermolecular tandem sulfonamination/cyclization of enaminones was realized by using N-aminopyridinium salts as the sulfonaminated reagents without transition-metal catalysts or bases. The reaction exhibits a broad scope and good functional group tolerance, good yields, and regioselectivity. Preliminary mechanistic studies support the radical property of the reaction and the involvement of N-centered radical intermediates.
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Affiliation(s)
- Wenyu Hu
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Xiaoqiong Diao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Jinwei Yuan
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Wei Liang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Wan Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Liangru Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Ji Ma
- Tobacco Research Institute of China National Tobacco Company, Zhengzhou 450001, P.R. China
| | - Shouren Zhang
- Henan Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou 450006, P. R. China
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2
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Zhu C, Jiang W, Ma D. Copper-Catalyzed Intramolecular Aldehyde-Ketone Nucleophilic Additions for the Synthesis of Chromans Bearing a Tertiary Alcohol Motif. J Org Chem 2023. [PMID: 38152030 DOI: 10.1021/acs.joc.3c02365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
The synthesis of chroman-3-ol derivatives via intramolecular nucleophilic additions has been established. Aldehydes can be used as alkyl carbanion equivalents via reductive polarity reversal which is facilitated by a copper catalyst and N-heterocyclic carbene ligand under mild conditions. The key to success is the difference in reaction activity between aldehydes and ketones. Finally, this methodology also can be used to construct other cyclic structures containing tertiary alcohols including tetraline, cyclohexane, indan, and 9,10-dihydrophenanthrene.
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Affiliation(s)
- Chenghao Zhu
- School of Pharmaceutical Engineering & Institute for Advanced Studies, Taizhou University, Jiaojiang 318000, Zhejiang, China
| | - Wenbo Jiang
- School of Pharmaceutical Engineering & Institute for Advanced Studies, Taizhou University, Jiaojiang 318000, Zhejiang, China
| | - Da Ma
- School of Pharmaceutical Engineering & Institute for Advanced Studies, Taizhou University, Jiaojiang 318000, Zhejiang, China
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3
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Ye YF, Li F, Chen JL, An ZQ, Zhang GY, Wang YB. Transition-Metal-Free Synthesis of 3-Acyl Chromones by the Tandem Reaction of Ynones and Methyl Salicylates. J Org Chem 2022; 87:14005-14015. [PMID: 36210518 DOI: 10.1021/acs.joc.2c01637] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A facile and effective tandem reaction of ynones and methyl salicylates was developed to obtain a broad range of 3-acyl chromones in moderate-to-excellent yields. This protocol underwent a Michael addition and cyclization process, which exhibited easily accessible substrates, broad substrate scope, and high regioselectivity under mild and transition-metal-free conditions. Moreover, gram-scale reaction and further chemical transformation of the products were also further studied.
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Affiliation(s)
- Ya-Fang Ye
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Feng Li
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Jia-Le Chen
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Zi-Qian An
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Gui-Ying Zhang
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Yan-Bo Wang
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
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4
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Reactions of Enaminones with p‐Quinone Methides: Access to 4H‐Chromene and 4H‐Chromen‐4‐one Derivatives. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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5
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Investigation of Direct and Retro Chromone-2-Carboxamides Based Analogs of Pseudomonas aeruginosa Quorum Sensing Signal as New Anti-Biofilm Agents. Pharmaceuticals (Basel) 2022; 15:ph15040417. [PMID: 35455414 PMCID: PMC9026348 DOI: 10.3390/ph15040417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 03/19/2022] [Accepted: 03/28/2022] [Indexed: 11/17/2022] Open
Abstract
Biofilm formation is considered a major cause of therapeutic failure because bacteria in biofilms have higher protection against antimicrobials. Thus, biofilm-related infections are extremely challenging to treat and pose major concerns for public health, along with huge economic impacts. Pseudomonas aeruginosa, in particular, is a “critical priority” pathogen, responsible for severe infections, especially in cystic fibrosis patients because of its capacity to form resistant biofilms. Therefore, new therapeutic approaches are needed to complete the pipeline of molecules offering new targets and modes of action. Biofilm formation is mainly controlled by Quorum Sensing (QS), a communication system based on signaling molecules. In the present study, we employed a molecular docking approach (Autodock Vina) to assess two series of chromones-based compounds as possible ligands for PqsR, a LuxR-type receptor. Most compounds showed good predicted affinities for PqsR, higher than the PQS native ligand. Encouraged by these docking results, we synthesized a library of 34 direct and 25 retro chromone carboxamides using two optimized routes from 2-chromone carboxylic acid as starting material for both series. We evaluated the synthesized carboxamides for their ability to inhibit the biofilm formation of P. aeruginosa in vitro. Overall, results showed several chromone 2-carboxamides of the retro series are potent inhibitors of the formation of P. aeruginosa biofilms (16/25 compound with % inhibition ≥ 50% at 50 μM), without cytotoxicity on Vero cells (IC50 > 1.0 mM). The 2,4-dinitro-N-(4-oxo-4H-chromen-2-yl) benzamide (6n) was the most promising antibiofilm compound, with potential for hit to lead optimization.
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6
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Wang ZW, Zheng Y, Qian YE, Guan JP, Lu WD, Yuan CP, Xiao JA, Chen K, Xiang HY, Yang H. Photoredox-Catalyzed Cascade of o-Hydroxyarylenaminones to Access 3-Aminated Chromones. J Org Chem 2022; 87:1477-1484. [PMID: 35014269 DOI: 10.1021/acs.joc.1c02796] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Reported herein is a photoredox-catalyzed amination of o-hydroxyarylenaminones with tert-butyl ((perfluoropyridin-4-yl)oxy)carbamate, a versatile amidyl-radical precursor developed in our laboratory. This work establishes a new cascade pathway for the assembly of a range of 3-aminochromones under mild conditions. Downstream transformations of the obtained 3-aminochromones to construct diverse amino pyrimidines greatly broaden the applications of this photocatalyzed protocol.
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Affiliation(s)
- Zhi-Wei Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Yu Zheng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Yu-En Qian
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Jian-Ping Guan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Wei-Dong Lu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Chu-Ping Yuan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Jun-An Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P.R. China
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, P.R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
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7
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Synthesis, crystal structure, Hirshfeld analysis and in silico studies of 2-chloro-3-(p-tolyl)-3,4-dihydro-2H-benzo[e][1,3,2]oxazaphosphinine 2-sulfide. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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8
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Benny AT, Arikkatt SD, Vazhappilly CG, Kannadasan S, Thomas R, Leelabaiamma MSN, Radhakrishnan EK, Shanmugam P. Chromone a Privileged Scaffold in Drug Discovery: Developments on the Synthesis and Bioactivity. Mini Rev Med Chem 2021; 22:1030-1063. [PMID: 34819000 DOI: 10.2174/1389557521666211124141859] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 05/12/2021] [Accepted: 09/02/2021] [Indexed: 11/22/2022]
Abstract
Chromones are the class of secondary metabolites broadly occurred in the plant kingdom in a noticeable quantity. This rigid bicyclic system has been categorized "as privileged scaffolds in compounds" in medicinal chemistry. The wide biological responses made them an important moiety in a drug discovery program. This review provides updates on the various methods of synthesis of chromones and biological applications in medicinal chemistry. Various synthetic strategies for the construction of chromones include readily available phenols, salicylic acid and its derivatives, ynones, chalcones, enaminones, chalcones and 2-hydroxyarylalkylketones as starting materials. Synthesis of chromones by using metal, metal free, nanomaterials and different catalysts are included. Details of diverse biological activities such as anti-cancer agents, antimicrobial agents, anti-viral property, anti-inflammatory agents, antioxidants, Monoamine Oxidase-B (MAO-B) Inhibitors, anti-Alzheimer's agents, anti-diabetic agent, antihistaminic potential, antiplatelet agents of chromone derivatives are diecussed.
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Affiliation(s)
- Anjitha Theres Benny
- Department of Chemistry, School of Advanced Sciences, VIT, Vellore-632014. India
| | - Sonia D Arikkatt
- Department of Chemistry, School of Advanced Sciences, VIT, Vellore-632014. India
| | - Cijo George Vazhappilly
- Department of Biotechnology, American University of Ras Al Khaimah, Ras Al Khaimah. United Arab Emirates
| | | | - Renjan Thomas
- Division of Molecular Pathology, Strand Lifesciences, HCG Hospital, Bangalore - 560 0270. India
| | | | | | - Ponnusamy Shanmugam
- Organic and Bioorganic Chemistry Division, CSIR-Central Leather Research Institute, Adyar, Chennai-600020. India
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9
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Duan J, Xiong Z, Zhou Y, Yao W, Li X, Zhang M, Wang Z. Access to Chiral Chromenones through Organocatalyzed Mannich/Annulation Sequence. Org Lett 2021; 23:8007-8012. [PMID: 34606286 DOI: 10.1021/acs.orglett.1c03010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein we report an efficient and practical method to access chiral chromenones bearing one α-amino stereogenic center in the β position of the carbonyl group. The quinine-derived squaramide could efficiently promote Mannich/cycloketalization/dehydration tandem reactions between 1-(2-hydroxyaryl)-1,3-diketones and functionalized imines generated in situ, providing a wide range of chiral chromenones with propargylamine or α-amino ester moieties with good results (54 examples, up to 98% ee).
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Affiliation(s)
- Jingxiang Duan
- School of Pharmaceutical Sciences and Chongqing Key Laboratory of Natural Drug Research, Chongqing University, Chongqing 401331, P. R. China
| | - Zongli Xiong
- School of Pharmaceutical Sciences and Chongqing Key Laboratory of Natural Drug Research, Chongqing University, Chongqing 401331, P. R. China
| | - Yuqiao Zhou
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Weijun Yao
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Xiaoyi Li
- School of Pharmaceutical Sciences and Chongqing Key Laboratory of Natural Drug Research, Chongqing University, Chongqing 401331, P. R. China
| | - Min Zhang
- School of Pharmaceutical Sciences and Chongqing Key Laboratory of Natural Drug Research, Chongqing University, Chongqing 401331, P. R. China
| | - Zhen Wang
- School of Pharmaceutical Sciences and Chongqing Key Laboratory of Natural Drug Research, Chongqing University, Chongqing 401331, P. R. China
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10
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Murugesh N, Karvembu R, Vedachalam S. A Convenient Synthesis of Iguratimod‐Amine Precursor via NHC‐Catalyzed Aldehyde‐Nitrile Cross Coupling Reaction. ChemistrySelect 2020. [DOI: 10.1002/slct.202003553] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Nithya Murugesh
- Department of Chemistry National Institute of Technology Tiruchirappalli 620015 India
| | - Ramasamy Karvembu
- Department of Chemistry National Institute of Technology Tiruchirappalli 620015 India
| | - Seenuvasan Vedachalam
- Department of Chemistry National Institute of Technology Tiruchirappalli 620015 India
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11
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Murugesh N, Karvembu R, Vedachalam S. The base-induced regioselective radical arylation of 3-aminochromone with aryl hydrazine. Org Biomol Chem 2020; 18:7884-7891. [DOI: 10.1039/d0ob01689f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A simple and efficient direct radical C-2 arylation of 3-aminochromone derivatives with aryl hydrazine under basic conditions is described.
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Affiliation(s)
- Nithya Murugesh
- Department of Chemistry
- National Institute of Technology
- Tiruchirappalli-620015
- India
| | - Ramasamy Karvembu
- Department of Chemistry
- National Institute of Technology
- Tiruchirappalli-620015
- India
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12
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Murugesh N, Haribabu J, Arumugam K, Balachandran C, Swaathy R, Aoki S, Sreekanth A, Karvembu R, Vedachalam S. NHC-catalyzed green synthesis of functionalized chromones: DFT mechanistic insights and in vitro activities in cancer cells. NEW J CHEM 2019. [DOI: 10.1039/c9nj02650a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A simple green protocol for the synthesis of 3-aminochromone derivatives using a NHC catalyzed intramolecular hydroacylation reaction was developed. Further functional 3-aminochromes were evaluated for their anticancer activity.
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Affiliation(s)
- Nithya Murugesh
- Department of Chemistry
- National Institute of Technology
- Tiruchirappalli 620 015
- India
| | - Jebiti Haribabu
- Department of Chemistry
- National Institute of Technology
- Tiruchirappalli 620 015
- India
| | | | | | - Rajagopal Swaathy
- Department of Chemistry
- National Institute of Technology
- Tiruchirappalli 620 015
- India
| | - Shin Aoki
- Faculty of Pharmaceutical Sciences
- Tokyo University of Science
- 2641 Yamazaki
- Japan
- Research Institute of Science and Technology
| | - Anandaram Sreekanth
- Department of Chemistry
- National Institute of Technology
- Tiruchirappalli 620 015
- India
| | - Ramasamy Karvembu
- Department of Chemistry
- National Institute of Technology
- Tiruchirappalli 620 015
- India
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13
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Zhang JW, Yang WW, Chen LL, Chen P, Wang YB, Chen DY. An efficient tandem synthesis of chromones from o-bromoaryl ynones and benzaldehyde oxime. Org Biomol Chem 2019; 17:7461-7467. [DOI: 10.1039/c9ob01387c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A transition-metal-free approach was developed to synthesize chromones from o-bromoaryl ynones and benzaldehyde oxime by sequential C–O bond formation.
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Affiliation(s)
- Jing-Wen Zhang
- Institute of Functional Organic Molecular Engineering
- Henan Engineering Laboratory of Flame-Retardant and Functional Materials
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Wan-Wan Yang
- Institute of Functional Organic Molecular Engineering
- Henan Engineering Laboratory of Flame-Retardant and Functional Materials
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Lu-Lu Chen
- Institute of Functional Organic Molecular Engineering
- Henan Engineering Laboratory of Flame-Retardant and Functional Materials
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Pei Chen
- Institute of Functional Organic Molecular Engineering
- Henan Engineering Laboratory of Flame-Retardant and Functional Materials
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Yan-Bo Wang
- Institute of Functional Organic Molecular Engineering
- Henan Engineering Laboratory of Flame-Retardant and Functional Materials
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Dan-Yun Chen
- Institute of Functional Organic Molecular Engineering
- Henan Engineering Laboratory of Flame-Retardant and Functional Materials
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
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14
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Chen Z, Han C, Fan C, Liu G, Pu S. Copper-Catalyzed Diversity-Oriented Synthesis (DOS) of 4-Amino-2 H-chromen-2-imines: Application of Kemp Elimination toward O-Heterocycles. ACS OMEGA 2018; 3:8160-8168. [PMID: 31458953 PMCID: PMC6644361 DOI: 10.1021/acsomega.8b01179] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 07/05/2018] [Indexed: 06/10/2023]
Abstract
We report herein a copper-catalyzed sequential multicomponent reaction of benzo[d]isoxazoles with terminal alkynes and sulfonyl azides, which produced divergent 4-amino-2H-chromen-2-imines with excellent chemical selectivity. The reaction tolerated a broad range of functional groups, and released only N2 as the sole byproduct. The sulfonyl imino group could be removed to give biologically active free 4-amino-2H-chromenone in good yield.
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Affiliation(s)
- Zhiyuan Chen
- Jiangxi
Key Laboratory of Organic Chemistry, Jiangxi
Science and Technology Normal University, 605 Fenglin Road, Nanchang, Jiangxi 330013, P. R. China
- Key
Laboratory of Functional Small Organic Molecules, Ministry of Education,
and College of Chemistry & Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, P. R. China
| | - Cuifen Han
- Key
Laboratory of Functional Small Organic Molecules, Ministry of Education,
and College of Chemistry & Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, P. R. China
| | - Congbin Fan
- Jiangxi
Key Laboratory of Organic Chemistry, Jiangxi
Science and Technology Normal University, 605 Fenglin Road, Nanchang, Jiangxi 330013, P. R. China
| | - Gang Liu
- Jiangxi
Key Laboratory of Organic Chemistry, Jiangxi
Science and Technology Normal University, 605 Fenglin Road, Nanchang, Jiangxi 330013, P. R. China
| | - Shouzhi Pu
- Jiangxi
Key Laboratory of Organic Chemistry, Jiangxi
Science and Technology Normal University, 605 Fenglin Road, Nanchang, Jiangxi 330013, P. R. China
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15
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Chang MY, Chen YH, Wang HS. Cu(OAc)2 Mediated Synthesis of 3-Sulfonyl Chromen-4-ones. J Org Chem 2018; 83:2361-2368. [DOI: 10.1021/acs.joc.8b00177] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Meng-Yang Chang
- Department
of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department
of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Yu-Hsin Chen
- Department
of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Heui-Sin Wang
- Department
of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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16
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Vedachalam S, Murugesh N, Chakraborty P, Karvembu R, Liu XW. NHC catalyzed enantioselective Coates-Claisen rearrangement: a rapid access to the dihydropyran core for oleuropein based secoiridoids. NEW J CHEM 2018. [DOI: 10.1039/c7nj04057a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple protocol for the synthesis of the dihydropyran core structure of secoiridoids using NHC catalyzed Coates-Claisen rearrangement is described.
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Affiliation(s)
| | - Nithya Murugesh
- Department of Chemistry
- National Institute of Technology
- Tiruchirappalli-620015
- India
| | - Priyanka Chakraborty
- Department of Chemistry
- National Institute of Technology
- Tiruchirappalli-620015
- India
| | - Ramasamy Karvembu
- Department of Chemistry
- National Institute of Technology
- Tiruchirappalli-620015
- India
| | - Xue-Wei Liu
- Division of Chemistry and Biological Chemistry
- School of Physical & Mathematical Sciences
- Nanyang Technological University
- Singapore
- Singapore
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17
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Yao Q, Kong L, Zhang F, Tao X, Li Y. Base-Promoted Tandem Reaction towards Conjugated Dienone or Chromone Derivatives with a Cyano Group: Insertion of Alkynes into C-C σ-Bonds of 3-Oxopropanenitriles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700565] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Qiyi Yao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 People's Republic of China
| | - Lingkai Kong
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 People's Republic of China
| | - Fangfang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 People's Republic of China
| | - Xianghua Tao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 People's Republic of China
| | - Yanzhong Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 People's Republic of China
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18
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Ren Q, Li M, Yuan L, Wang J. Recent advances in N-heterocyclic carbene catalyzed achiral synthesis. Org Biomol Chem 2017; 15:4731-4749. [PMID: 28540374 DOI: 10.1039/c7ob00568g] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
N-Heterocyclic carbenes (NHCs) have emerged as powerful and elegant organocatalysts in a variety of newly developed and unprecedented enantioselective transformations due to their unique umpolung capacity. As a supplement to conventional enantioselective organocatalysis, NHC-induced non-asymmetric catalysis has gradually attracted much interest in recent years. Herein, this review aims to reveal the recent developments in NHC-promoted non-asymmetric umpolung transformations resulting in the expeditious construction of versatile achiral natural heterocycles, carbocycles and acylated products.
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Affiliation(s)
- Qiao Ren
- College of Pharmaceutical Science, Southwest University, Chongqing 400715, China.
| | - Muyao Li
- College of Pharmaceutical Science, Southwest University, Chongqing 400715, China.
| | - Lujiang Yuan
- College of Pharmaceutical Science, Southwest University, Chongqing 400715, China.
| | - Jian Wang
- School of Chemical & Environmental Engineering, Wuyi University, Jiangmen 529020, China. and Department of Pharmacology and Pharmaceutical Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
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19
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Yue Y, Peng J, Wang D, Bian Y, Sun P, Chen C. Synthesis of 4H-Chromen-4-one Derivatives by Intramolecular Palladium-Catalyzed Acylation of Alkenyl Bromides with Aldehydes. J Org Chem 2017; 82:5481-5486. [DOI: 10.1021/acs.joc.7b00640] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Yixia Yue
- Department of Chemistry
and
Chemical Engineering, College of Science, Northeast Forestry University, Harbin 150040, P. R. China
| | - Jinsong Peng
- Department of Chemistry
and
Chemical Engineering, College of Science, Northeast Forestry University, Harbin 150040, P. R. China
| | - Deqiang Wang
- Department of Chemistry
and
Chemical Engineering, College of Science, Northeast Forestry University, Harbin 150040, P. R. China
| | - Yunyun Bian
- Department of Chemistry
and
Chemical Engineering, College of Science, Northeast Forestry University, Harbin 150040, P. R. China
| | - Peng Sun
- Department of Chemistry
and
Chemical Engineering, College of Science, Northeast Forestry University, Harbin 150040, P. R. China
| | - Chunxia Chen
- Department of Chemistry
and
Chemical Engineering, College of Science, Northeast Forestry University, Harbin 150040, P. R. China
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20
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Hoplamaz E, Keskin S, Balci M. Regioselective Synthesis of Benzo[h][1,6]-naphthyridines and Chromenopyrazinones through Alkyne Cyclization. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601661] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Emre Hoplamaz
- Department of Chemistry; Middle East Technical University; 06800 Ankara Turkey
| | - Selbi Keskin
- Department of Chemistry; Giresun University; 28100 Giresun Turkey
| | - Metin Balci
- Department of Chemistry; Middle East Technical University; 06800 Ankara Turkey
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21
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Ravichandiran P, Lai B, Gu Y. Aldo-X Bifunctional Building Blocks for the Synthesis of Heterocycles. CHEM REC 2016; 17:142-183. [DOI: 10.1002/tcr.201600042] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Indexed: 01/13/2023]
Affiliation(s)
- Palanisamy Ravichandiran
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Bingbing Lai
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
| | - Yanlong Gu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; Wuhan 430074 P.R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Lanzhou Institute of Chemical Physics; Lanzhou 730000 P.R. China
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22
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Cheng X, Zhou Y, Zhang F, Zhu K, Liu Y, Li Y. Base-Promoted Tandem Reaction Involving Insertion into Carbon-Carbon σ-Bonds: Synthesis of Xanthone and Chromone Derivatives. Chemistry 2016; 22:12655-9. [DOI: 10.1002/chem.201602064] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Xingcan Cheng
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 China
| | - Yuanyuan Zhou
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 China
| | - Fangfang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 China
| | - Kai Zhu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 China
| | - Yuanyuan Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 China
| | - Yanzhong Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 China
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23
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Reis J, Cagide F, Chavarria D, Silva T, Fernandes C, Gaspar A, Uriarte E, Remião F, Alcaro S, Ortuso F, Borges F. Discovery of New Chemical Entities for Old Targets: Insights on the Lead Optimization of Chromone-Based Monoamine Oxidase B (MAO-B) Inhibitors. J Med Chem 2016; 59:5879-93. [PMID: 27244485 DOI: 10.1021/acs.jmedchem.6b00527] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The discovery of new chemical entities endowed with potent, selective, and reversible monoamine oxidase B inhibitory activity is a clinically relevant subject. Therefore, a small library of chromone derivatives was synthesized and screened toward human monoamine oxidase isoforms (hMAO-A and hMAO-B). The structure-activity relationships studies strengthen the importance of the amide spacer and the direct linkage of carbonyl group to the γ-pyrone ring, along with the presence of meta and para substituents in the exocyclic ring. The most potent MAO-B inhibitors were N-(3'-chlorophenyl)-4-oxo-4H-chromene-3-carboxamide (20) (IC50 = 403 pM) and N-(3',4'-dimethylphenyl)-4-oxo-4H-chromene-3-carboxamide (27) (IC50 = 669 pM), acting as competitive and noncompetitive reversible inhibitors, respectively. Computational docking studies provided insights into enzyme-inhibitor interactions and a rationale for the observed selectivity and potency. Compound 27 stands out due to its favorable toxicological profile and physicochemical properties, which pointed toward blood-brain barrier permeability, thus being a valid candidate for subsequent animal studies.
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Affiliation(s)
- Joana Reis
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto , 4169-007, Porto, Portugal
| | - Fernando Cagide
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto , 4169-007, Porto, Portugal
| | - Daniel Chavarria
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto , 4169-007, Porto, Portugal
| | - Tiago Silva
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto , 4169-007, Porto, Portugal
| | - Carlos Fernandes
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto , 4169-007, Porto, Portugal
| | - Alexandra Gaspar
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto , 4169-007, Porto, Portugal
| | - Eugenio Uriarte
- Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela , 15782 Santiago de Compostela, Spain
| | - Fernando Remião
- UCIBIO-REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto , 4050-313, Porto, Portugal
| | - Stefano Alcaro
- Department of "Scienze della Vita", University "Magna Græcia" of Catanzaro , 88100 Catanzaro, Italy
| | - Francesco Ortuso
- Department of "Scienze della Vita", University "Magna Græcia" of Catanzaro , 88100 Catanzaro, Italy
| | - Fernanda Borges
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto , 4169-007, Porto, Portugal
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24
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Akram MO, Bera S, Patil NT. A facile strategy for accessing 3-alkynylchromones through gold-catalyzed alkynylation/cyclization of o-hydroxyarylenaminones. Chem Commun (Camb) 2016; 52:12306-12309. [DOI: 10.1039/c6cc07119h] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A strategy based on tandem alkynylation ofo-hydroxyarylenaminones followed by intramolecular cyclization has been developed to generate a diverse array of 3-alkynyl chromones.
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Affiliation(s)
- Manjur O. Akram
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune-411 008
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Saibal Bera
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi-110 025
- India
- Physical and Materials Chemistry Division
- CSIR-National Chemical Laboratory
| | - Nitin T. Patil
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune-411 008
- India
- Academy of Scientific and Innovative Research (AcSIR)
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25
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Aly S, Romashko M, Arndtsen BA. Multicomponent Synthesis of Substituted and Fused-Ring Imidazoles via Phospha-münchnone Cycloaddition. J Org Chem 2015; 80:2709-14. [PMID: 25688846 DOI: 10.1021/jo5028936] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Sara Aly
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Mikhail Romashko
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Bruce A. Arndtsen
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
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26
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Wang P, Li Z, Cao S, Rao H. Metal-free catalytic cascade to chromones: direct coupling of salicylaldehydes and activated alkynes triggered by aryloxyl radicals. RSC Adv 2015. [DOI: 10.1039/c5ra24634b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The first intermolecular addition reaction of aryloxyl radicals to CC bonds was disclosed, which can afford biologically important chromonsviaa PhNMe3I-catalyzed direct coupling of salicylaldehydes and activated internal alkynes in only one step.
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Affiliation(s)
- Ping Wang
- Department of Chemistry
- Capital Normal University
- Beijing 100048
- P. R. China
- School of Chemical Engineering
| | - Zhongfeng Li
- Department of Chemistry
- Capital Normal University
- Beijing 100048
- P. R. China
| | - Shengli Cao
- Department of Chemistry
- Capital Normal University
- Beijing 100048
- P. R. China
| | - Honghua Rao
- Department of Chemistry
- Capital Normal University
- Beijing 100048
- P. R. China
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27
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Robinson CW, Rye CS, Chessum NEA, Jones K. A model β-sheet interaction and thermodynamic analysis of β-strand mimetics. Org Biomol Chem 2015; 13:7402-7. [DOI: 10.1039/c5ob00886g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Two novel β-strand mimetics are synthesized and their binding to a model peptide is studied in detail by 1H NMR.
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Affiliation(s)
- Colin W. Robinson
- Cancer Research UK Cancer Therapeutics Unit
- Institute of Cancer Research
- Haddow Laboratories
- London
- UK
| | - Carl S. Rye
- Cancer Research UK Cancer Therapeutics Unit
- Institute of Cancer Research
- Haddow Laboratories
- London
- UK
| | - Nicola E. A. Chessum
- Cancer Research UK Cancer Therapeutics Unit
- Institute of Cancer Research
- Haddow Laboratories
- London
- UK
| | - Keith Jones
- Cancer Research UK Cancer Therapeutics Unit
- Institute of Cancer Research
- Haddow Laboratories
- London
- UK
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28
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Mani NS, Fitzgerald AE. A Step-Economical Route to Fused 1,2,3-Triazoles via an Intramolecular 1,3-Dipolar Cycloaddition between a Nitrile and an in Situ Generated Aryldiazomethane. J Org Chem 2014; 79:8889-94. [DOI: 10.1021/jo5013288] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Neelakandha S. Mani
- Janssen Research & Development, LLC, 3210 Merryfield Row, San Diego, California 92121, United States
| | - Anne E. Fitzgerald
- Janssen Research & Development, LLC, 3210 Merryfield Row, San Diego, California 92121, United States
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29
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Gaspar A, Matos MJ, Garrido J, Uriarte E, Borges F. Chromone: A Valid Scaffold in Medicinal Chemistry. Chem Rev 2014; 114:4960-92. [DOI: 10.1021/cr400265z] [Citation(s) in RCA: 472] [Impact Index Per Article: 47.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Alexandra Gaspar
- CIQUP/Department
of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua Campo Alegre 687, 4169-007 Porto, Portugal
- Department
of Organic Chemistry, Faculty of Pharmacy, University of Santiago of Compostela, 15782 Santiago de Compostela, Spain
| | - Maria João Matos
- CIQUP/Department
of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua Campo Alegre 687, 4169-007 Porto, Portugal
- Department
of Organic Chemistry, Faculty of Pharmacy, University of Santiago of Compostela, 15782 Santiago de Compostela, Spain
| | - Jorge Garrido
- CIQUP/Department
of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua Campo Alegre 687, 4169-007 Porto, Portugal
- Department
of Chemical Engineering, School of Engineering (ISEP), Polytechnic of Porto, 4200-072 Porto, Portugal
| | - Eugenio Uriarte
- Department
of Organic Chemistry, Faculty of Pharmacy, University of Santiago of Compostela, 15782 Santiago de Compostela, Spain
| | - Fernanda Borges
- CIQUP/Department
of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua Campo Alegre 687, 4169-007 Porto, Portugal
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30
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Bai Y, Xiang S, Leow ML, Liu XW. Dual-function Pd/NHC catalysis: tandem allylation–isomerization–conjugate addition that allows access to pyrroles, thiophenes and furans. Chem Commun (Camb) 2014; 50:6168-70. [DOI: 10.1039/c4cc01750a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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31
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Chen XY, Sun LH, Ye S. N-Heterocyclic Carbene Catalyzed [4+2] Cycloaddition of Nitroalkenes with Oxodienes. Chemistry 2013; 19:4441-5. [DOI: 10.1002/chem.201204539] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Indexed: 11/12/2022]
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32
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Maji B, Ji L, Wang S, Vedachalam S, Ganguly R, Liu XW. N-Heterocyclic Carbene Catalyzed Homoenolate-Addition Reaction of Enals and Nitroalkenes: Asymmetric Synthesis of 5-Carbon-Synthon δ-Nitroesters. Angew Chem Int Ed Engl 2012; 51:8276-80. [DOI: 10.1002/anie.201203449] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Indexed: 12/24/2022]
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33
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Maji B, Ji L, Wang S, Vedachalam S, Ganguly R, Liu XW. N-Heterocyclic Carbene Catalyzed Homoenolate-Addition Reaction of Enals and Nitroalkenes: Asymmetric Synthesis of 5-Carbon-Synthon δ-Nitroesters. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201203449] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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34
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Abstract
Asymmetric organocatalysis is now an established methodology for the preparation of chiral compounds. However, these are not the only valuable molecules which can be conveniently obtained. Organocatalytic reactions affording achiral compounds are gaining momentum, opening unexplored pathways in the synthesis of densely functionalized aromatic moieties, olefins and useful molecules such as natural substances.
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Affiliation(s)
- Polyssena Renzi
- Dipartimento di Chimica, Sapienza Università di Roma, Istituto di Chimica Biomolecolare del CNR, P.le Aldo Moro 5, 00185, Roma, Italy
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35
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Jiang Y, Chen W, Lu W. N-Heterocyclic carbene catalyzed conjugate umpolung reactions leading to coumarin derivatives. RSC Adv 2012. [DOI: 10.1039/c1ra00916h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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36
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Cai S, Zeng J, Bai Y, Liu XW. Access to quinolines through gold-catalyzed intermolecular cycloaddition of 2-aminoaryl carbonyls and internal alkynes. J Org Chem 2011; 77:801-7. [PMID: 22148183 DOI: 10.1021/jo202281x] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A facile and general method leading to polyfunctionalized quinolines was developed. In the presence of a highly efficient combination encompassing (PPh)(3)AuCl and AgOTf, the reactions between 2-aminocarbonyls and an array of internal alkynes proceeded smoothly to afford quinoline derivatives in good to excellent yields (up to 93%).
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Affiliation(s)
- Shuting Cai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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37
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Padmanaban M, Biju AT, Glorius F. Efficient synthesis of benzofuranones: N-heterocyclic carbene (NHC)/base-catalyzed hydroacylation-Stetter-rearrangement cascade. Org Lett 2011; 13:5624-7. [PMID: 21919536 DOI: 10.1021/ol2023483] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A N-heterocyclic carbene/base-catalyzed cascade reaction leading to the formation of functionalized benzofuranones is reported. The reaction proceeds via an intramolecular hydroacylation of unactivated alkynes followed by an intermolecular Stetter reaction and a base-catalyzed chromanone to benzofuranone rearrangement.
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Affiliation(s)
- Mohan Padmanaban
- Westfälische Wilhelms-Universität, NRW Graduate School of Chemistry, Organisch-Chemisches Institut, Corrensstrasse 40, 48149 Münster, Germany
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38
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Maji B, Vedachalan S, Ge X, Cai S, Liu XW. N-Heterocyclic Carbene-Mediated Oxidative Esterification of Aldehydes: Ester Formation and Mechanistic Studies. J Org Chem 2011; 76:3016-23. [DOI: 10.1021/jo200275c] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Biswajit Maji
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Seenuvasan Vedachalan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Xin Ge
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Shuting Cai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Xue-Wei Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
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39
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Mehta VP, Sharma AK, Modha SG, Sharma S, Meganathan T, Parmar VS, Van der Eycken E. N-Heterocyclic Carbene Catalyzed Aroylation of 3,5-Dichloro-2(1H)-pyrazinones. J Org Chem 2011; 76:2920-5. [DOI: 10.1021/jo200155n] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vaibhav P. Mehta
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Ajendra kumar Sharma
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Sachin G. Modha
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Sweta Sharma
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 100007, India
| | - Thirumal Meganathan
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 100007, India
| | - Virinder Singh Parmar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 100007, India
| | - Erik Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
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40
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Vedachalam S, Wong QL, Maji B, Zeng J, Ma J, Liu XW. N-Heterocyclic Carbene Catalyzed Intramolecular Hydroacylation of Activated Alkynes: Synthesis of Chromones. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201000828] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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41
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Cai S, Kishan Gorityala B, Ma J, Leow ML, Liu XW. [3 + 2] Cycloaddition on Carbohydrate Templates: Stereoselective Synthesis of Pyrrolidines. Org Lett 2011; 13:1072-5. [DOI: 10.1021/ol103119u] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shuting Cai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Bala Kishan Gorityala
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Jimei Ma
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Min Li Leow
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Xue-Wei Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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42
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43
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Pasunooti KK, Chai H, Jensen CN, Gorityala BK, Wang S, Liu XW. A microwave-assisted, copper-catalyzed three-component synthesis of dihydropyrimidinones under mild conditions. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.10.150] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Biju AT, Glorius F. Intermolecular N-Heterocyclic Carbene Catalyzed Hydroacylation of Arynes. Angew Chem Int Ed Engl 2010; 49:9761-4. [DOI: 10.1002/anie.201005490] [Citation(s) in RCA: 139] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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45
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Biju AT, Glorius F. Eine intermolekulare, durch N-heterocyclische Carbene katalysierte Hydroacylierung von Arinen. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201005490] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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46
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Bai Y, Zeng J, Ma J, Gorityala BK, Liu XW. Quick Access to Druglike Heterocycles: Facile Silver-Catalyzed One-Pot Multicomponent Synthesis of Aminoindolizines. ACTA ACUST UNITED AC 2010; 12:696-9. [DOI: 10.1021/cc100086h] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yaguang Bai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Jing Zeng
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Jimei Ma
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Bala Kishan Gorityala
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Xue-Wei Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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47
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Pasunooti KK, Nixon Jensen C, Chai H, Leow ML, Zhang DW, Liu XW. Microwave-Assisted Copper(II)-Catalyzed One-Pot Four-Component Synthesis of Multifunctionalized Dihydropyridines. ACTA ACUST UNITED AC 2010; 12:577-81. [DOI: 10.1021/cc100060s] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kalyan Kumar Pasunooti
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical, Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Chantel Nixon Jensen
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical, Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Hua Chai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical, Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Min Li Leow
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical, Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Da-Wei Zhang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical, Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Xue-Wei Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical, Sciences, Nanyang Technological University, Singapore 637371, Singapore
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48
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Biju AT, Wurz NE, Glorius F. N-Heterocyclic Carbene-Catalyzed Cascade Reaction Involving the Hydroacylation of Unactivated Alkynes. J Am Chem Soc 2010; 132:5970-1. [DOI: 10.1021/ja102130s] [Citation(s) in RCA: 196] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Akkattu T. Biju
- Organisch-Chemisches Institut der Westfälischen Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Nathalie E. Wurz
- Organisch-Chemisches Institut der Westfälischen Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut der Westfälischen Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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