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Huang Y, Tan M, Wang N, Zhang Y, Yao H, Xiao X, Huang N, Zou K. Highly Regio- and Diastereoselective Phosphine-Catalyzed [2 + 4] Annulation of Benzofuran-Derived Azadienes with Allyl Carbonates: Access to Spiro[benzofuran-cyclohexanes]. J Org Chem 2023; 88:13030-13041. [PMID: 37648964 DOI: 10.1021/acs.joc.3c01154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
A novel highly regio- and diastereoselective phosphine-catalyzed [2 + 4] annulation of benzofuran-derived azadienes (BDAs) with acidic hydrogen-tethered allyl carbonates has been developed ingeniously. A range of functionalized spiro[benzofuran-cyclohexane] derivatives with two consecutive stereocenters were smoothly obtained in moderate to excellent yields under mild reaction conditions from readily available materials. Moreover, this method is a practical and scalable strategy that creates the core structural motif of the fungistatic drug, griseofulvin.
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Affiliation(s)
- Yifei Huang
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China
| | - Mengting Tan
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China
| | - Nengzhong Wang
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China
| | - Yufei Zhang
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China
| | - Hui Yao
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China
| | - Xiao Xiao
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Nianyu Huang
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China
| | - Kun Zou
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China
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2
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Sun M, Gui J, Zhong R, Wu H, Liu S, Li J, Yang J, Wang Z. TfOH-catalyzed direct Michael addition and cascade cyclization reactions of unactivated ketones: A divergent route to functionalized benzofurans and benzofuro[3,2-b]pyridines. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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3
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Lin ML, Zheng T, Liu H, Wang YX, Dong L. Three-component acyloxylation of diazo compounds with carboxylic acids and azadienes. Org Biomol Chem 2023; 21:925-929. [PMID: 36607136 DOI: 10.1039/d2ob02133a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Despite many studies on benzofuran-derived azadiene being reported, multi-component studies have scarcely been reported on this heterocyclic skeleton. The first cascade three-component acyloxylation of diazos with acids and azadienes has been reported under mild conditions. The reaction is applicable to various (A/A) diazo compounds, generating diverse complex benzofuran derivatives.
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Affiliation(s)
- Meng-Ling Lin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Ting Zheng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Hao Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Ying-Xu Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Lin Dong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
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4
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Mondal D, Pramanik S, Chowdhury C. Palladium(0)-Catalyzed Heteroannulations of Allenamides: General Synthesis of δ-Carbolines and Benzofuro[3,2- b]pyridines. Org Lett 2022; 24:8698-8702. [DOI: 10.1021/acs.orglett.2c03625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Debasmita Mondal
- Organic and Medicinal Chemistry Division, CSIR−Indian Institute of Chemical Biology, Kolkata 700032, India
| | - Subhendu Pramanik
- Organic and Medicinal Chemistry Division, CSIR−Indian Institute of Chemical Biology, Kolkata 700032, India
| | - Chinmay Chowdhury
- Organic and Medicinal Chemistry Division, CSIR−Indian Institute of Chemical Biology, Kolkata 700032, India
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5
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Shi W, Ren Y, Zhao H, Tang Y, Piao S, Mao B, Wang W, Wu Y, Wang B, Guo H. Phosphine-Catalyzed (4 + 2) Annulation of Allenoates with Benzofuran-Derived Azadienes and Subsequent Thio-Michael Addition. Org Lett 2022; 24:3747-3752. [PMID: 35549282 DOI: 10.1021/acs.orglett.2c01500] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A phosphine-catalyzed (4 + 2) annulation of tetrahydrobenzofuranone-derived allenoates and benzofuran-derived azadienes (BDAs) has been achieved to construct the decahydro-2H-naphtho[1,8-bc]furan derivatives, which were subsequently treated with 4-methylbenzenethiol and trimethylamine to produce thio-Michael addition products in high to excellent yields with good diastereoselectivities.
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Affiliation(s)
- Wangyu Shi
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, PR China
| | - Yue Ren
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, PR China
| | - Haoran Zhao
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, PR China
| | - Yi Tang
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, PR China
| | - Shixiang Piao
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, PR China
| | - Biming Mao
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, PR China
| | - Wei Wang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, PR China
| | - Yongjun Wu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, PR China
| | - Bo Wang
- Department of Chemistry, Tsinghua University, Beijing 100084, PR China
| | - Hongchao Guo
- Department of Chemistry and Innovation Center of Pesticide Research, China Agricultural University, Beijing 100193, PR China
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6
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Kumar G, Nagpure M, Rao VK, Guchhait SK. Synthesis of heterocyclic‐fused furans and dihydrofurans via a (4+1)‐annulation with ylide: Exploration of unique reactivity behavior of α‐carbonyl sulfoxonium ylide. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Gulshan Kumar
- National Institute of Pharmaceutical Education and Research Department of Medicinal Chemistry Sector 67SAS Nagar 160062 Mohali INDIA
| | - Mithilesh Nagpure
- National Institute of Pharmaceutical Education and Research Department of Medicinal Chemistry Sector 67SAS Nagar 160062 Mohali INDIA
| | - Vajja Krishna Rao
- National Institute of Pharmaceutical Education and Research Department of Medicinal Chemistry Sector 67SAS Nagar 160062 Mohali INDIA
| | - Sankar Kumar Guchhait
- National Institute of Pharmaceutical Education and Research Department of Medicinal Chemistry Phase X, Sector 67 160062 S. A. S. Nagar Mohali INDIA
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Song X, Chen Y, Lu F, Zhang K, Yu C, Li T, Yao C. NHC-catalyzed [4 + 2] annulations of allenoates and 2,3-dioxopyrrolidine derivatives. Org Biomol Chem 2022; 20:1219-1225. [PMID: 35040844 DOI: 10.1039/d1ob02180j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile NHC-catalyzed [2 + 4] annulation of allenoates with 2,3-dioxypyrrolidine derivatives was discovered, which paved a new avenue for the construction of highly substituted pyranopyrrole with moderate to good yields, high atom economy and mild reaction conditions.
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Affiliation(s)
- Xue Song
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
| | - Yangxu Chen
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
| | - Fangfang Lu
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
| | - Kai Zhang
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
| | - Chenxia Yu
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
| | - Tuanjie Li
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
| | - Changsheng Yao
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
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Li J, Liu S, Zhong R, Yang Y, Xu J, Yang J, Ding H, Wang Z. Cascade Cyclization of Azadienes with Difluoroenoxysilanes: A One-Pot Formal [4 + 2] Approach to Fluorinated Polyfused Heterocycles. Org Lett 2021; 23:9526-9532. [PMID: 34860022 DOI: 10.1021/acs.orglett.1c03745] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A TfOH-promoted synthesis of fluorinated polyfused heterocycles via the cascade cyclization of azadienes and difluoroenoxysilanes has been developed, leading to the facile construction of fluorinated benzofuro[3,2-b]pyridines, 5H-indeno[1,2-b]pyridines, and 5,6-dihydrobenzo[h]quinolines. This one-pot formal [4 + 2] approach involves 1,4-difluoroalkylation, desulfonylation, cyclization, and dehydrated and dehydrofluorinated aromatization and represents the first application of difluoroenoxysilane in cascade transformations. Furthermore, this methodology is highlighted by the synthesis of three fluoro analogues of bioactive molecules with potent topoisomerase inhibitory activities.
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Affiliation(s)
- Jinshan Li
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P. R. China
| | - Saimei Liu
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P. R. China
| | - Rong Zhong
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P. R. China
| | - Yaqi Yang
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P. R. China
| | - Jinjing Xu
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P. R. China
| | - Jianguo Yang
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P. R. China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310058, P. R. China
| | - Zhiming Wang
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P. R. China
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