51
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Zhai YL, Zhou H, Liu QQ, Leng BR, Zhang Z, Li JZ, Wang DC, Zhu YL. Photocatalytic Markovnikov-type addition and cyclization of terminal alkynes leading to 4-sulfonyl quinoline-2(1 H)-ones. Chem Commun (Camb) 2022; 58:5112-5115. [PMID: 35377376 DOI: 10.1039/d2cc01169g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new and expedient photocatalytic protocol for the construction of quinolin-2(1H)-ones via Markovnikov-type sulfonylation/6-endo-trig cyclization/selective C(O)-CF3 bond cleavage starting from N-alkyl-N-(2-ethynylphenyl)-2,2,2-trifluoroacetamides and sulfinic acids has been developed. It is as an unprecedented protocol for the preparation of 4-sulfonylquinoline-2(1H)-ones with high efficiency, mild reaction conditions, acceptable yields and a wide range of substrates.
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Affiliation(s)
- Yu-Lin Zhai
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P. R. China.
| | - Hui Zhou
- Institute of Materia Medica, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Qing-Quan Liu
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P. R. China.
| | - Bo-Rong Leng
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P. R. China.
| | - Zixian Zhang
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P. R. China.
| | - Jia-Zhuo Li
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P. R. China.
| | - De-Cai Wang
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P. R. China. .,Institute of Materia Medica, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Yi-Long Zhu
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P. R. China. .,Institute of Materia Medica, Nanjing Tech University, Nanjing 211816, P. R. China
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52
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Yang D, Yan Q, Zhu E, Lv J, He WM. Carbon–sulfur bond formation via photochemical strategies: An efficient method for the synthesis of sulfur-containing compounds. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.09.068] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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53
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Shao C, He Y, Yin H, Chen FX. Me3SiCl‐Catalyzed Electrophilic Thiocyanation/Cyclization of Alkynylbenzoates to Synthesize 4‐Thiocyanatoisocourmarins. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chukai Shao
- Beijing Institute of Technology School of Chemistry No. 8 Liangxiang East Road, Fangshan District, Beijing 102488 (P. R. China) 102488 Beijing CHINA
| | - Ying He
- Beijing Institute of Technology School of Chemistry CHINA
| | - Hongquan Yin
- Beijing Institute of Technology School of Chemistry CHINA
| | - Fu-Xue Chen
- Beijing Institute of Technology School of chemical Engineering No5 south zhongguancun street, Haidian 100081 Beijing CHINA
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54
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Yamada T, Fujii A, Park K, Furugen C, Takagi A, Ikawa T, Sajiki H. Catalytic Intramolecular Cyclization of Alkynyl Cyclic Acetals via Chemoselective Activation Leading to Phenanthrene Core. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tsuyoshi Yamada
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Akiko Fujii
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Kwihwan Park
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Chikara Furugen
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Akira Takagi
- Laboratory of Bioorganic & Natural Products Chemistry, Kobe Pharmaceutical University, Kobe, Hyogo 658-8558, Japan
| | - Takashi Ikawa
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Hironao Sajiki
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
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55
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Ramani A, Desai B, Patel M, Naveen T. Recent advances in the functionalization of terminal and internal alkynes. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Arti Ramani
- Sardar Vallabhbhai National Institute of Technology Department of chemistry INDIA
| | - Bhargav Desai
- Sardar Vallabhbhai National Institute of Technology Department of chemistry INDIA
| | - Monak Patel
- Sardar Vallabhbhai National Institute of Technology Department of chemistry INDIA
| | - Togati Naveen
- SVNIT Surat: Sardar Vallabhbhai National Institute of Technology Applied Chemistry Room No: 115, Applied Chemistry DepartmentSVNIT Surat 395007 SURAT INDIA
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56
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Goulart TAC, Back DF, Moura E Silva S, Zeni G. Palladium-Catalyzed Cascade 5- endo-dig Cyclization of Ynamides to Form 4-Alkynyloxazolones. J Org Chem 2022; 87:3341-3351. [PMID: 35167299 DOI: 10.1021/acs.joc.1c02978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The selective synthesis of 4-alkynyloxazolones and their further applications as substrates to electrophile-promoted nucleophilic cyclization have been developed. The reaction of ynamides with terminal alkynes proceeded smoothly to give 4-alkynyloxazolones in the presence of a catalytic amount of palladium(II) acetate. The products were obtained with the sequential formation of new C-C and C-O bonds via a cascade procedure. The first step involved a carbon-oxygen bond formation, via a 5-endo-dig closure, which was confirmed by X-ray analyses of the crystalline sample. Subsequently, the reaction of 4-alkynyloxazolones with an electrophilic selenium source gave 3-phenylselanyl benzofuran derivatives via an electrophile-promoted nucleophilic cyclization.
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Affiliation(s)
- Tales A C Goulart
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE, UFSM, Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Davi Fernando Back
- Laboratório de Materiais Inorgânicos, Departamento de Química, UFSM, Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Sidnei Moura E Silva
- Laboratório de Biotecnologia de Produtos Naturais e Sintéticos, Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Gilson Zeni
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE, UFSM, Santa Maria, Rio Grande do Sul 97105-900, Brazil
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57
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Zhang X, Wang D, Lei Y, Liu M, Cai Z, Wu H, Shen G, Huang X, Dong Y. Selenium atoms induce organic doped systems to produce pure phosphorescence emission. Chem Commun (Camb) 2022; 58:1179-1182. [PMID: 34981105 DOI: 10.1039/d1cc06380d] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A host-guest system is constructed using a guest containing two selenium atoms. The selenium atoms can increase the spin-orbit coupling constant and the conjugation degree, thereby increasing the emission wavelength, and making the materials show only phosphorescence emission.
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Affiliation(s)
- Xinyu Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China.
| | - Dan Wang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China.
| | - Yunxiang Lei
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China.
| | - Miaochang Liu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China.
| | - Zhengxu Cai
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, 10081, P. R. China
| | - Huayue Wu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China.
| | - Guoming Shen
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China.
| | - Xiaobo Huang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China.
| | - Yuping Dong
- School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, 10081, P. R. China
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58
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He HF, Wang Y, Zou C, Tu Z, Xu Y, Yin J. Ag 2O-mediated Tandem Reaction between Terminal Alkyne and o-Iodibenzoic Acid: Construction of 3-Ethylideneisobenzofuran-1(3 H)-ones. ACS OMEGA 2022; 7:3060-3063. [PMID: 35097300 PMCID: PMC8793066 DOI: 10.1021/acsomega.1c06177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 12/30/2021] [Indexed: 05/13/2023]
Abstract
Taking aryl propargyl ether and o-iodibenzoic acid as substrates, a series of aryl cyclolactones bearing an exocyclized C=C bond were constructed with moderate to good yields. Diverse substituent groups could be tolerant in the reaction, which indicated excellent compatibility of the reaction. In this tandem reaction, Ag2O was employed as the media and Et3N was screened as the base to facilitate the reaction. A concise mechanism was proposed on the basis of the expansion of the substrates and theoretical analysis. Sonogashira type coupling coupled with intramolecular nucleophilic addition in one pot to construct the product, 3-ethylideneisobenzofuran-1(3H)-one.
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Affiliation(s)
- Hua-Feng He
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
| | - Yuwan Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
| | - Chun Zou
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
| | - Zheng Tu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
| | - Yongquan Xu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
| | - Junfeng Yin
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
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59
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Banerjee A, Sarkar S, Shah JA, Frederiks NC, Bazan‐Bergamino EA, Johnson CJ, Ngai M. Excited‐State Copper Catalysis for the Synthesis of Heterocycles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Arghya Banerjee
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery the State University of New York at Stony Brook Stony Brook NY 11794 USA
| | - Satavisha Sarkar
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery the State University of New York at Stony Brook Stony Brook NY 11794 USA
| | - Jagrut A. Shah
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery the State University of New York at Stony Brook Stony Brook NY 11794 USA
| | - Nicoline C. Frederiks
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery the State University of New York at Stony Brook Stony Brook NY 11794 USA
| | - Emmanuel A. Bazan‐Bergamino
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery the State University of New York at Stony Brook Stony Brook NY 11794 USA
| | - Christopher J. Johnson
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery the State University of New York at Stony Brook Stony Brook NY 11794 USA
| | - Ming‐Yu Ngai
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery the State University of New York at Stony Brook Stony Brook NY 11794 USA
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60
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Banerjee A, Sarkar S, Shah JA, Frederiks NC, Bazan-Bergamino EA, Johnson CJ, Ngai MY. Excited-State Copper Catalysis for the Synthesis of Heterocycles. Angew Chem Int Ed Engl 2022; 61:e202113841. [PMID: 34783154 PMCID: PMC8761179 DOI: 10.1002/anie.202113841] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Indexed: 01/23/2023]
Abstract
Heterocycles are one of the largest groups of organic moieties with significant medicinal, chemical, and industrial applications. Herein, we report the discovery and development of visible-light-induced, synergistic excited-state copper catalysis using a combination of Cu(IPr)I as a catalyst and rac-BINAP as a ligand, which produces more than 10 distinct classes of heterocycles. The reaction tolerates a broad array of functional groups and complex molecular scaffolds, including derivatives of peptides, natural products, and marketed drugs. Preliminary mechanistic investigation suggests in situ generations of [Cu(BINAP)2 ]+ and [Cu(IPr)2 ]+ catalysts that work cooperatively under visible-light irradiation to facilitate catalytic carbo-aroylation of unactivated alkenes, affording a wide range of useful heterocycles.
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Affiliation(s)
- Arghya Banerjee
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, the State University of New York at Stony Brook, Stony Brook, New York 11794, USA
| | - Satavisha Sarkar
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, the State University of New York at Stony Brook, Stony Brook, New York 11794, USA
| | - Jagrut A. Shah
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, the State University of New York at Stony Brook, Stony Brook, New York 11794, USA
| | - Nicoline C. Frederiks
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, the State University of New York at Stony Brook, Stony Brook, New York 11794, USA
| | - Emmanuel A. Bazan-Bergamino
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, the State University of New York at Stony Brook, Stony Brook, New York 11794, USA
| | - Christopher J. Johnson
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, the State University of New York at Stony Brook, Stony Brook, New York 11794, USA
| | - Ming-Yu Ngai
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, the State University of New York at Stony Brook, Stony Brook, New York 11794, USA
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61
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Darbem MP, Esteves HA, Burrow RA, Soares-Paulino AA, Pimenta DC, Stefani HA. Synthesis of unprotected glyco-alkynones via molybdenum-catalyzed carbonylative Sonogashira cross-coupling reaction. RSC Adv 2022; 12:2145-2149. [PMID: 35425248 PMCID: PMC8979075 DOI: 10.1039/d1ra08388k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 12/10/2021] [Indexed: 12/03/2022] Open
Abstract
Herein we report a novel Mo-catalyzed carbonylative Sonogashira cross-coupling between 2-iodoglycals and terminal alkynes. The reaction displays major improvements compared to a related Pd-catalyzed procedure previously published by our group, such as utilizing unprotected sugar derivatives as starting materials and tolerance to substrates bearing chelating groups. In this work we also demonstrate the utility of the glyco-alkynone products as platform for further functionalization by synthesizing glyco-flavones via Au-catalyzed 6-endo-dig cyclization.
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Affiliation(s)
- Mariana P Darbem
- Departamento de Farmácia, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo Avenida Prof. Lineu Prestes, 580 - Bl. 13 São Paulo 05508-000 Brazil
| | - Henrique A Esteves
- Yusuf Hamied Department of Chemistry, University of Cambridge Cambridge CB2 1EW UK
| | - Robert A Burrow
- Departamento de Química, Universidade Federal de Santa Maria Santa Maria 97105-340 Brazil
| | - Antônio A Soares-Paulino
- Departamento de Farmácia, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo Avenida Prof. Lineu Prestes, 580 - Bl. 13 São Paulo 05508-000 Brazil
| | | | - Hélio A Stefani
- Departamento de Farmácia, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo Avenida Prof. Lineu Prestes, 580 - Bl. 13 São Paulo 05508-000 Brazil
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62
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Slivka M, Fizer M, Mariychuk R, Ostafin M, Moyzesh O, Koval G, Kamoshenkova OH, Rusyn I, l Lendel V. Synthesis and antimicrobial activity of functional derivatives of thiazolo[2,3-c][1,2,4]triazoles. LETT DRUG DES DISCOV 2022. [DOI: 10.2174/1570180819666220110145659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Background:
Condensed triazoles are a well-known class of heterocyclic compounds due to a wide range of biological activity. The study is dedicated to the evaluation of the antimicrobial potential of new functional derivatives of thiazolo[2,3-c][1,2,4]triazoles.
Methods:
Effective, easy-to-implement and low-cost routes to the production of title compounds via electrophilic intramolecular heterocyclization are reported. Bactericidal and fungicidal activities against Gram-positive and Gram-negative bacteria, and fungus were studied. The influence of functional groups on the biological activity of tested thiazolo[2,3-c][1,2,4]triazoles is discussed.
Results:
Microbiological evaluation shows that 6-[(trichlorotellanyl)methyl]-[1,3]thiazolo[2,3-c][1,2,4]triazol-3-amine hydrogen chloride 2a and 3-(2-hydroxyphenyl)-6-[(trichloro-λ4-tellanyl)methyl]-5,6-dihydro-[1,3]thiazolo[2,3-c][1,2,4]triazole 2g have a high bactericidal activity and Cu (I) salts of 3-(2-hydroxyphenyl)-6-iodomethyl/6-methylidene-5,6-dihydro-[1,3]thiazolo-[2,3-c][1,2,4]triazoles 5a,c have a high fungicidal activity.
Conclusion:
it must be concluded that these products or their derivatives may be of practical benefit as bactericidal and fungicidal agents.
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Affiliation(s)
- Mikhailo Slivka
- Department of Organic Chemistry, Faculty of Chemistry, Uzhhorod National University, Uzhhorod, Ukraine
| | - Maksym Fizer
- Department of Organic Chemistry, Faculty of Chemistry, Uzhhorod National University, Uzhhorod, Ukraine
| | - Ruslan Mariychuk
- Department of Ecology, Faculty of Humanity and Natural Sciences, University of Presov in Presov, Presov, Slovak Republic
| | - Marek Ostafin
- Department of Microbiology and Biomonitoring, Faculty of Agriculture and Economics, University of Agriculture in Krakow, Krakow, Poland
| | - Olexander Moyzesh
- Department of Organic Chemistry, Faculty of Chemistry, Uzhhorod National University, Uzhhorod, Ukraine
| | - Galyna Koval
- Department of Microbiology, Faculty of Medicine, Uzhhorod National University, Uzhhorod, Ukraine
| | | | - Ivan Rusyn
- Department of Organic Chemistry, Faculty of Chemistry, Uzhhorod National University, Uzhhorod, Ukraine
| | - Vasy l Lendel
- Department of Organic Chemistry, Faculty of Chemistry, Uzhhorod National University, Uzhhorod, Ukraine
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63
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Zhang X, Zhou R, Qi Z, Chen L, Yu L. PhSe(O)OH/Al(NO 3) 3-Catalyzed selectivity controllable oxidation of sulphide owing to the synergistic effect of Se, Al 3+ and nitrate. REACT CHEM ENG 2022. [DOI: 10.1039/d2re00190j] [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
Catalyzed by PhSe(O)OH/Al(NO3)3, selective oxidation of sulphides to produce sulfoxides or sulphones could be achieved under mild conditions. The synergistic effect of Se, Al3+ and nitrate is the key factor for the reaction.
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Affiliation(s)
- Xu Zhang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Rui Zhou
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Zhengyuan Qi
- College of Information Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, 730070, China
| | - Liping Chen
- College of Chemical Engineering, Yangzhou Polytechnic Institute, Yangzhou 225127, China
| | - Lei Yu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
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64
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Yuan JW, Chen Q, Wu WT, Zhao JJ, Yang LR, Xiao YM, Mao P, Qu LB. Selectfluor-mediated construction of 3-arylselenenyl and 3,4-bisarylselenenyl spiro[4.5]trienones via cascade annulation of N-phenylpropiolamides with diselenides. NEW J CHEM 2022. [DOI: 10.1039/d2nj00869f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A cascade annulation of N-phenylpropiolamides with diselenides leading to the construction of 3-arylselenenyl spiro[4.5]trienones was realized under mild conditions with Selectfluor as the sole oxidant.
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Affiliation(s)
- Jin-Wei Yuan
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Qian Chen
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Wen-Tao Wu
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Jian-Jun Zhao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Liang-Ru Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Yong-Mei Xiao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Pu Mao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Ling-Bo Qu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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65
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Silica gel-assisted synthesis of benzo[b]thiophenes from o-(alkylsulfanyl)(ethynyl)benzenes. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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66
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Selective synthesis of iminodioxaspirononanes and diazaspirononanes using formic acid-activated Mn(III) oxidation of N1,N3-disubstitued malonamides with 1,1-diarylethenes. Tetrahedron 2022. [DOI: 10.1016/j.tet.2021.132611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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67
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Paixão DB, Soares EGO, Salles HD, Silva CDG, Rampon DS, Schneider PH. Rongalite in PEG-400 as a general and reusable system for the synthesis of 2,5-disubstituted chalcogenophenes. Org Chem Front 2022. [DOI: 10.1039/d2qo01069k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Herein we report the use of rongalite in PEG-400 as a general, efficient, and environmentally benign reductive system for the synthesis of a wide range of 2,5-disubstituted chalcogenophenes from elemental sulfur, selenium and tellurium.
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Affiliation(s)
- Douglas B. Paixão
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Eduardo G. O. Soares
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Helena D. Salles
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Caren D. G. Silva
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Daniel S. Rampon
- Laboratório de Polímeros e Catálise (LAPOCA), Departamento de Química, Universidade Federal do Paraná (UFPR), P.O. Box 19061, 81531-990, Curitiba, PR, Brazil
| | - Paulo H. Schneider
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
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68
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Yuan JW, Shen L, Ma M, Feng S, Yang W, Yang L, Xiao YM, Zhang S, Qu L. Visible-Light-Induced Tandem Difluoroalkylated Spirocyclization of N-Arylpropiolamides: Access to C3-Difluoroacetylated Spiro[4,5]trienones. NEW J CHEM 2022. [DOI: 10.1039/d2nj00131d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A visible-light-catalyzed difluoroacetylated spirocyclization of N-arylpropiolamides with ethyl bromodifluoroacetate as a CF2CO2Et radical precursor is described. This approach allows the formation of two carbon-carbon bonds and one carbon-oxygen bond in...
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69
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Masih PJ, Kesharwani T, Rodriguez E, Vertudez MA, Motakhaveri ML, Le TK, Tran MKT, Cloyd MR, Kornman CT, Phillips AM. Synthesis and Evaluation of 3-Halobenzo[ b]thiophenes as Potential Antibacterial and Antifungal Agents. Pharmaceuticals (Basel) 2021; 15:39. [PMID: 35056096 PMCID: PMC8780876 DOI: 10.3390/ph15010039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/18/2021] [Accepted: 12/22/2021] [Indexed: 11/24/2022] Open
Abstract
The global health concern of antimicrobial resistance has harnessed research interest to find new classes of antibiotics to combat disease-causing pathogens. In our studies, 3-halobenzo[b]thiophene derivatives were synthesized and tested for their antimicrobial activities using the broth microdilution susceptibility method. The 3-halo substituted benzo[b]thiophenes were synthesized starting from 2-alkynyl thioanisoles using a convenient electrophilic cyclization methodology that utilizes sodium halides as the source of electrophilic halogens when reacted along with copper(II) sulfate. This environmentally benign methodology is facile, uses ethanol as the solvent, and results in 3-halo substituted benzo[b]thiophene structures in very high yields. The cyclohexanol-substituted 3-chloro and 3-bromobenzo[b]thiophenes resulted in a low MIC of 16 µg/mL against Gram-positive bacteria and yeast. Additionally, in silico absorption, distribution, metabolism, and excretion (ADME) properties of the compounds were determined. The compounds with the lowest MIC values showed excellent drug-like properties with no violations to Lipinski, Veber, and Muegge filters. The time-kill curve was obtained for cyclohexanol-substituted 3-chlorobenzo[b]thiophenes against Staphylococcus aureus, which showed fast bactericidal activity at MIC.
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Affiliation(s)
- Prerna J Masih
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Tanay Kesharwani
- Department of Chemistry, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Elivet Rodriguez
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Mia A Vertudez
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Mina L Motakhaveri
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Terelan K Le
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Minh Kieu T Tran
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Matthew R Cloyd
- Department of Chemistry, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Cory T Kornman
- Department of Chemistry, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
| | - Aimee M Phillips
- Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA
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70
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Synthesis of mononuclear heterocycles via electrophilic cyclization. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02869-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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71
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Yuan JW, Mou CX, Zhang Y, Hu WY, Yang LR, Xiao YM, Mao P, Zhang SR, Qu LB. Transition-metal catalyzed oxidative spirocyclization of N-aryl alkynamides with methylarenes under microwave irradiation. Org Biomol Chem 2021; 19:10348-10358. [PMID: 34812461 DOI: 10.1039/d1ob01970h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A practical synthetic route to construct a variety of 3-benzyl spiro[4,5]trienones was developed via transition-metal Cu/Ag-catalyzed oxidative ipso-annulation of activated alkynes with unactivated toluenes using TBPB as an oxidant under microwave irradiation. This method allows the formation of two carbon-carbon bonds and one carbon-oxygen bond in a single reaction through a sequence of C-H oxidative coupling, ipso-carbocyclization and dearomatization. The advantages of this protocol are its operational simplicity and broad substrate scope, and the ability to afford the desired products in moderate to good yields.
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Affiliation(s)
- Jin-Wei Yuan
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Chen-Xu Mou
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Yang Zhang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Wen-Yu Hu
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Liang-Ru Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Yong-Mei Xiao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Pu Mao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Shou-Ren Zhang
- Henan Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou 450006, P. R. China
| | - Ling-Bo Qu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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72
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Chalcogenative spirocyclization of N-aryl propiolamides with diselenides/disulfides promoted by Selectfluor. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2021. [DOI: 10.1515/znb-2021-0154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Abstract
A practical and efficient synthetic route to construct a variety of 3-arylselenenyl/3-arylthio spiro[4.5]trienones was developed using Selectfluor reagent as a mild oxidant. This reaction proceeds via a sequence of electrophilic cation addition, spirocyclization and dearomatization, then offers an approach to introduce Se/S-centered cation into the C–C triple bonds. The utility of this protocol were justified by the excellent compatibility of a wide range of functional groups, good yields and scalability under mild reaction conditions.
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73
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Wang T, Zhu X, Tao Q, Xu W, Sun H, Wu P, Cheng B, Zhai H. Synthesis of tetrasubstituted thiophenes from pyridinium 1,4-zwitterionic thiolates and modified activated alkynes. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.04.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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74
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Kaplan JA, Issaian A, Stang M, Gorial D, Blum SA. Repurposing π Electrophilic Cyclization/Dealkylation for Group Transfer. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202112351] [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]
Affiliation(s)
- Joseph A. Kaplan
- Department of Chemistry University of California, Irvine Irvine CA 02697 USA
| | - Adena Issaian
- Department of Chemistry University of California, Irvine Irvine CA 02697 USA
| | - Martin Stang
- Department of Chemistry University of California, Irvine Irvine CA 02697 USA
| | - David Gorial
- Department of Chemistry University of California, Irvine Irvine CA 02697 USA
| | - Suzanne A. Blum
- Department of Chemistry University of California, Irvine Irvine CA 02697 USA
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75
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Kaplan JA, Issaian A, Stang M, Gorial D, Blum SA. Repurposing π Electrophilic Cyclization/Dealkylation for Group Transfer. Angew Chem Int Ed Engl 2021; 60:25776-25780. [PMID: 34585500 DOI: 10.1002/anie.202112351] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Indexed: 01/31/2023]
Abstract
A metal-free regio- and stereocontrolled group-transfer route toward the synthesis of trisubstituted alkenes is described. In this route, an electrophilic heterocyclization is followed by ring-opening group transfer. Specifically, a thioboration reaction transforms readily available alkynyl sulfide precursors into alkenyl boronates and alkenyl sulfides with defined regio- and stereochemistry in one synthetic step using commercially available B-chlorocatecholborane (ClBcat). Mechanistic studies identified the likely pathway as proceeding through zwitterionic rather than haloborated intermediates. The regio- and stereochemistry set in the initial cyclization step is preserved in the final acyclic alkene product, producing alkenes with up to four modifiable substituents with predictable regio- and stereochemistry. Downstream functionalization reactions showcase the versatility of the substitutions of the resulting alkenes. The mechanistic concept maps onto future reaction designs, given the abundance of known electrophiles and nucleophiles for electrophilic heterocyclization/dealkylation sequences.
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Affiliation(s)
- Joseph A Kaplan
- Department of Chemistry, University of California, Irvine, Irvine, CA, 02697, USA
| | - Adena Issaian
- Department of Chemistry, University of California, Irvine, Irvine, CA, 02697, USA
| | - Martin Stang
- Department of Chemistry, University of California, Irvine, Irvine, CA, 02697, USA
| | - David Gorial
- Department of Chemistry, University of California, Irvine, Irvine, CA, 02697, USA
| | - Suzanne A Blum
- Department of Chemistry, University of California, Irvine, Irvine, CA, 02697, USA
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76
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Ma Y, Liu M, Zhou Y, Wu H. Synthesis of Organoselenium Compounds with Elemental Selenium. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101227] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yang‐Tong Ma
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 People's Republic of China
| | - Miao‐Chang Liu
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 People's Republic of China
| | - Yun‐Bing Zhou
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 People's Republic of China
| | - Hua‐Yue Wu
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 People's Republic of China
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77
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Hong SJ, Yoon CJ, Lim HN, Yeom H. Step‐Economical Route to 2‐Amido‐3‐bromobenzo[
b
]thiophenes
via
Ynamide Formation and Selectfluor‐Mediated Oxidative Bromocyclization. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Su Jeong Hong
- Eco-Friendly New Materials Research Center, Therapeutics&Biotechnology Division Korea Research Institute of Chemical Technology (KRICT) 141 Gajeong-ro, Yuseong-gu Daejeon 34114 Republic of Korea
- Department of Chemistry Hanyang University 222, Wangsimni-ro, Seongdong-gu Seoul 04763 Republic of Korea
| | - Chang Ju Yoon
- Eco-Friendly New Materials Research Center, Therapeutics&Biotechnology Division Korea Research Institute of Chemical Technology (KRICT) 141 Gajeong-ro, Yuseong-gu Daejeon 34114 Republic of Korea
- Department of Chemistry Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon-si Gyeonggi-do 16419 Republic of Korea
| | - Hee Nam Lim
- Department of Chemistry and Biochemistry Yeungnam University 280 Daehak-Ro, Gyeongsan Gyeongbuk 38541 Republic of Korea
| | - Hyun‐Suk Yeom
- Eco-Friendly New Materials Research Center, Therapeutics&Biotechnology Division Korea Research Institute of Chemical Technology (KRICT) 141 Gajeong-ro, Yuseong-gu Daejeon 34114 Republic of Korea
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78
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Yasui M, Inoue M, Nakao K, Takeda N, Ueda M. Sc(OTf) 3-Catalyzed Iodocyclization/Ritter-Type Amidation of N-Alkoxypropiolamides: A Synthetic Strategy for Isoxazol-3(2 H)-ones. J Org Chem 2021; 86:15498-15508. [PMID: 34670082 DOI: 10.1021/acs.joc.1c01987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A Sc(OTf)3-catalyzed iodocyclization/Ritter-type amidation of N-alkoxypropiolamides for the synthesis of 4-iodoisoxazol-3(2H)-ones bearing an amide group has been developed. This domino protocol allows the construction of a valuable heterocycle, isoxazol-3(2H)-one, as well as the introduction of two functional groups. The reaction has a broad substrate scope and can be carried out on a large scale. Control experiments suggest that Sc(OTf)3 acts as a dual activator for both the iodocyclization and amidation steps. In addition, the N-alkoxy group in the substrate suppresses some of the side reactions.
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Affiliation(s)
- Motohiro Yasui
- Kobe Pharmaceutical University Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Maki Inoue
- Kobe Pharmaceutical University Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Kotone Nakao
- Kobe Pharmaceutical University Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Norihiko Takeda
- Kobe Pharmaceutical University Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Masafumi Ueda
- Kobe Pharmaceutical University Motoyamakita, Higashinada, Kobe 658-8558, Japan
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79
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Wang HZ, Li JZ, Guo Z, Zheng H, Wei WT. Visible-Light-Catalyzed N-Radical-Enabled Cyclization of Alkenes for the Synthesis of Five-Membered N-Heterocycles. CHEMSUSCHEM 2021; 14:4658-4670. [PMID: 34402206 DOI: 10.1002/cssc.202101586] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/15/2021] [Indexed: 06/13/2023]
Abstract
Five-membered N-heterocycles play an important role in organic synthesis and material chemistry, as they are widespread through pharmaceutical molecules and natural products. Chemists have developed many synthetic strategies for constructing five-membered N-heterocycles from N-centered radicals, but the availability of mild and green methods for these transformations is still limited. The cyclization of visible-light-generated N-centered radicals with alkenes has emerged as a powerful tool to enable these chemical transformations in recent years. Through chosen representative examples, the significant developments in this promising field were outlined, including the selection of catalysts, substrate scope, mechanistic understanding (especially density functional theory calculations), and applications. The contents of this Minireview are categorized by intramolecular cyclization and intermolecular N-centered radical addition/cyclization reactions.
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Affiliation(s)
- Hui-Zhi Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, P. R. China
| | - Jiao-Zhe Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, P. R. China
| | - Zhiyong Guo
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, P. R. China
| | - Hongxing Zheng
- Institution of Functional Organic Molecules and Materials, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252059, P. R. China
| | - Wen-Ting Wei
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, P. R. China
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80
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Recent Advances in the Synthesis and Ring‐Opening Transformations of 2‐Oxazolidinones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100746] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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81
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Desai B, Patel M, Dholakiya BZ, Rana S, Naveen T. Recent advances in directed sp 2 C-H functionalization towards the synthesis of N-heterocycles and O-heterocycles. Chem Commun (Camb) 2021; 57:8699-8725. [PMID: 34397068 DOI: 10.1039/d1cc02176a] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Heterocyclic compounds are widely present in the core structures of several natural products, pharmaceuticals and agrochemicals, and thus great efforts have been devoted to their synthesis in a mild and simpler way. In the past decade, remarkable progress has been made in the field of heterocycle synthesis by employing C-H functionalization as an emerging synthetic strategy. As a complement to previous protocols, transition metal catalyzed C-H functionalization of arenes using various directing groups has recently emerged as a powerful tool to create different classes of heterocycles. This review is mainly focussed on the recent key progress made in the field of the synthesis of N,O-heterocycles from olefins and allenes by using nitrogen based and oxidizing directing groups.
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Affiliation(s)
- Bhargav Desai
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat-395 007, India.
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82
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Barcellos AM, Sacramento M, da Costa GP, Perin G, João Lenardão E, Alves D. Organoboron compounds as versatile reagents in the transition metal-catalyzed C–S, C–Se and C–Te bond formation. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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83
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Ni H, He X, Zhong K, Chen H, Lai W, Zhao Z, Zeng Z, Bai R, Lan Y. Oxymetalation or oxidative cyclization? mechanism of Pd-catalyzed annulation of enynones. Chem Commun (Camb) 2021; 57:8316-8319. [PMID: 34319338 DOI: 10.1039/d1cc02744a] [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
Enynones are powerful synthons for constructing furan derivatives in the presence of transition metal catalysts. Unlike the conventional intramolecular nucleophilic attack with the activation of coinage metals, we propose that enynones undergo an oxidative cyclization process with a Pd(0) species. The full catalytic cycle involves oxidative cyclization, isocyanide insertion, and reductive elimination, which was supported by DFT calculations. Geometric and electronic analyses confirmed the oxidative cyclization process, which proceeds via a Pd(ii) intermediate.
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Affiliation(s)
- Hao Ni
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing, 400030, P. R. China.
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84
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Bhattacharya A, Thirupathi A, Natarajan P, Peruncheralathan S. Chemoselective Ullmann Reaction of α-Trisubstituted Thioamides: Synthesis of Novel 2-Iminobenzothiolanes. ACS OMEGA 2021; 6:21169-21180. [PMID: 34423225 PMCID: PMC8375098 DOI: 10.1021/acsomega.1c03410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
New classes of unexplored benzo[b]thiolanes are synthesized from trisubstituted thioamides through copper-catalyzed intramolecular S-arylation of thioamides for the first time. This method provides good to excellent yields with fully controlled chemoselectivity. Unusually, iminobenzo[b]thiolanes are very stable under mild acidic conditions. A plausible mechanism is proposed for the chemoselective S-arylation process.
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85
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Ikeda G, Kawasaki M, Hanamoto T. Sonogashira cross-coupling of (Z)-2‑bromo-2-CF3-vinyl benzyl sulfide and access to 4-CF3-3-iodo-2-substituted thiophenes. J Fluor Chem 2021. [DOI: 10.1016/j.jfluchem.2021.109838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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86
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Zhu J, Durham AC, Wang Y, Corcoran JC, Zuo XD, Geib SJ, Wang YM. Regiocontrolled Coupling of Alkynes and Dipolar Reagents: Iron-Mediated [3 + 2] Cycloadditions Revisited. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jin Zhu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Austin C. Durham
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Yidong Wang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - James C. Corcoran
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Xiao-Dong Zuo
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Steven J. Geib
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Yi-Ming Wang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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87
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Yang Y, Cheng L, Wang M, Yin L, Feng Y, Wang C, Li Y. Difunctionalization of Alkynones by Base-Mediated Reaction with α,α-Dithioketones. Org Lett 2021; 23:5339-5343. [PMID: 34228461 DOI: 10.1021/acs.orglett.1c01640] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel 1,2-difunctionalization of alkynones via an umpolung strategy for the synthesis of tetrasubstituted olefins has been developed. This procedure is realized by a formal C-C σ-bond cleavage reaction of cyclic α,α-dithioketones and subsequent deprotection. Notable features of this approach include excellent yields, mild reaction conditions, a broad substrate scope, and operational simplicity.
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Affiliation(s)
- Yajie Yang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Lu Cheng
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Mengdan Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Liqiang Yin
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Ye Feng
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Chengyu Wang
- School of Chemistry and Chemical Engineering, Linyi University, Shuangling Road, Linyi, Shandong 276000, China
| | - Yanzhong Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.,Key Laboratory of Polar Materials and Devices, Ministry of Education, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
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88
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89
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Shukla RK, Chaturvedi AK, Volla CMR. Catalytic Cascade Cyclization and Regioselective Hydroheteroarylation of Unactivated Alkenes. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01234] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Rahul K. Shukla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Atul K. Chaturvedi
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Chandra M. R. Volla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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90
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Wang Q, Li P, Li T, Liu M, Zuo S, Liu J, Xu L, Zhang X, Yu L. Methylselenized Glucose: Improvement of the Stability of Glucose-Supported Selenium via the End-Capping Strategy. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01437] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Qiyuan Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Peizi Li
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Tao Li
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Collaborative Innovation of Modern Crops and Food Crops in Jiangsu/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
| | - Menglan Liu
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Collaborative Innovation of Modern Crops and Food Crops in Jiangsu/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
| | - Shimin Zuo
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Collaborative Innovation of Modern Crops and Food Crops in Jiangsu/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
| | - Jian Liu
- Sichuan Selewood Technology Company Limited, Chengdu 610218, China
| | - Lin Xu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
- Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Collaborative Innovation of Modern Crops and Food Crops in Jiangsu/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China
| | - Xu Zhang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Lei Yu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
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91
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An S, Zhang Z, Li P. Metal‐Free Synthesis of Selenodihydronaphthalenes by Selenoxide‐Mediated Electrophilic Cyclization of Alkynes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100423] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Shaoyu An
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry College of Chemistry Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Zhong Zhang
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry College of Chemistry Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Pingfan Li
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry College of Chemistry Beijing University of Chemical Technology Beijing 100029 P. R. China
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92
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Chuchmareva M, Strauch C, Schröder S, Collong A, Niggemann M. Regio- and Stereoselective N-addition to an Open Bromo Vinyl Cation. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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93
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Slivka M, Onysko M. The Use of Electrophilic Cyclization for the Preparation of Condensed Heterocycles. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/s-0040-1706036] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractCondensed heterocycles are well-known for their excellent biological effects and they are undeniably important compounds in organic chemistry. Electrophilic cyclization reactions are widely used for the synthesis of mono-heterocyclic compounds. This review highlights the utility of electrophilic cyclization reactions as an effective generic tool for the synthesis of various condensed heterocycles containing functional groups that are able to undergo further chemical transformations, such as nucleophilic substitution, elimination, re-cyclization, cleavage, etc. This review describes the reactions of unsaturated derivatives of different heterocycles with various electrophilic agents (halogens, arylsulfanyl chlorides, mineral acids) resulting in annulation of an additional partially saturated heterocycle. The electrophilic reaction conditions, plausible mechanisms and the use of such transformations in organic synthesis are also discussed. The review mainly focuses on research published since 2002 in order to establish the current state of the art in this area. 1 Introduction2 Electrophilic Cyclization Pathways Involving a Nitrogen Nucleophilic Center3 Electrophilic Cyclization Pathways Involving a Chalcogen Nucleophilic Center3.1 Sulfur Centers3.2 Oxygen Centers3.3 Selenium Centers4 Strategies and Mechanisms5 Conclusion
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94
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Zheng B, Li X, Song Y, Meng S, Li Y, Liu Q, Pan L. Visible-Light-Induced Formation of Thiavinyl 1,3-Dipoles: A Metal-Free [3+2] Oxidative Cyclization with Alkynes as Easy Access to Thiophenes. Org Lett 2021; 23:3453-3459. [PMID: 33881879 DOI: 10.1021/acs.orglett.1c00915] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A visible-light-induced [3+2] oxidative cyclization of various alkynes with easily available ketene dithioacetals as the previously unknown thiavinyl 1,3-dipoles in the presence of an acridine photosensitizer is reported. A series of multisubstituted thiophenes were achieved regioselectively in ≤98% yields under very mild metal-free conditions without other additives. This reaction could tolerate a wide range of substrates and achieve good efficiency in large-scale syntheses. The reaction mechanism and their applications are described in detail to reveal the reactivity of the new 1,3-dipoles and the selectivity of the reactions.
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Affiliation(s)
- Baihui Zheng
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Xiaotong Li
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Yang Song
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Shuyang Meng
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Yifei Li
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Qun Liu
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Ling Pan
- Jilin Province Key Laboratory of Organic Functional Molecular, Design & Synthesis, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
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95
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Affiliation(s)
- Lihao Liao
- Institute of Organic Chemistry and MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Xiaodan Zhao
- Institute of Organic Chemistry and MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
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96
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Shah C, Yadav P, Althagafi I, Nemaysh V, Shaw R, Elagamy A, Pratap R. Base mediated synthesis of functionalized 2-(alkynyl)arylnitriles and their molecular docking study with aromatase receptor. Org Biomol Chem 2021; 19:3462-3468. [PMID: 33899877 DOI: 10.1039/d1ob00165e] [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 simple, efficient, and transition metal-free approach to synthesize functionalized 2-(alkynyl)benzonitriles has been developed using suitably functionalized 2H-pyran-2-ones and 4-phenyl/trimethylsilanyl-but-3-yn-2-ones as precursors. The reaction proceeds in the presence of a base at room temperature to yield internal as well as terminal alkynes. The structure of the synthesized compound was confirmed by single-crystal X-ray analysis. The molecular docking study was performed to evaluate the binding mode of action of newly synthesized alkyne derivatives with known human breast cancer target receptor aromatase (PDB ID: 3EQM).
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Affiliation(s)
- Chandan Shah
- Department of Chemistry, University of Delhi, North Campus, Delhi, 110007, India.
| | - Pratik Yadav
- Department of Chemistry, Kirori Mal College, University of Delhi, North Campus, Delhi, 110007, India
| | - Ismail Althagafi
- Chemistry Department, Faculty of Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Vishal Nemaysh
- Department of Chemistry, University of Delhi, North Campus, Delhi, 110007, India.
| | - Ranjay Shaw
- Department of Chemistry, University of Delhi, North Campus, Delhi, 110007, India.
| | - Amr Elagamy
- Department of Chemistry, University of Delhi, North Campus, Delhi, 110007, India.
| | - Ramendra Pratap
- Department of Chemistry, University of Delhi, North Campus, Delhi, 110007, India.
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97
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Peglow TJ, Bartz RH, Barcellos T, Schumacher RF, Cargnelutti R, Perin G. Synthesis of 2‐Aryl‐(3‐Organochalcogenyl)Thieno[2,3‐
b
]Pyridines Promoted by Oxone®. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100102] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Thiago J. Peglow
- Laboratório de Síntese Orgânica Limpa – LASOL, CCQFA Universidade Federal de Pelotas – UFPel P.O. Box 354 96010-900 Pelotas, RS Brazil
| | - Ricardo H. Bartz
- Laboratório de Síntese Orgânica Limpa – LASOL, CCQFA Universidade Federal de Pelotas – UFPel P.O. Box 354 96010-900 Pelotas, RS Brazil
| | - Thiago Barcellos
- Laboratório de Biotecnologia de Produtos Naturais e Sintéticos Universidade de Caxias do Sul – UCS Caxias do Sul, RS Brazil
| | - Ricardo F. Schumacher
- Departamento de Química, CCNE Universidade Federal de Santa Maria – UFSM Santa Maria, RS Brazil
| | - Roberta Cargnelutti
- Departamento de Química, CCNE Universidade Federal de Santa Maria – UFSM Santa Maria, RS Brazil
| | - Gelson Perin
- Laboratório de Síntese Orgânica Limpa – LASOL, CCQFA Universidade Federal de Pelotas – UFPel P.O. Box 354 96010-900 Pelotas, RS Brazil
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98
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Luz EQ, Silvério GL, Seckler D, Lima DB, Santana FS, Barbosa RV, Montes D'Oca CR, Rampon DS. One‐Pot Synthesis of 3‐Halo‐2‐organochalcogenylbenzo[
b
]chalcogenophenes from 1‐(2,2‐Dibromovinyl)‐2‐organochalcogenylbenzenes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001586] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Eduardo Q. Luz
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - Gabriel L. Silvério
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - Diego Seckler
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - David B. Lima
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - Francielli S. Santana
- Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - Ronilson V. Barbosa
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - Caroline R. Montes D'Oca
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
| | - Daniel S. Rampon
- Laboratory of Polymers and Catalysis (LaPoCa), Department of Chemistry Federal University of Paraná-UFPR P. O. Box 19061 Curitiba PR, 81531-980 Brazil
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99
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Schumacher RF, Godoi B, Jurinic CK, Belladona AL. Diorganyl Dichalcogenides and Copper/Iron Salts: Versatile Cyclization System To Achieve Carbo- and Heterocycles from Alkynes. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1463-4098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
AbstractOrganochalcogen-containing cyclic molecules have shown several promising pharmacological properties. Consequently, different strategies have been developed for their synthesis in the past few years. Particularly due to the low cost and environmental aspects, copper- and iron-promoted cyclization reactions of alkynyl substrates have been broadly and efficiently applied for this purpose. This short review presents an overview of the most recent advances in the synthesis of organochalcogen-containing carbo- and heterocycles by reacting diorganyl disulfides, diselenides, and ditellurides with alkyne derivatives in the presence of copper and iron salts to promote cyclization reactions.1 Introduction2 Synthesis of Carbo- and Heterocycles via Reactions of Alkynes with Diorganyl Dichalcogenides and Copper Salts3 Synthesis of Carbo- and Heterocycles via Reactions of Alkynes with Diorganyl Dichalcogenides and Iron Salts4 Conclusions
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Affiliation(s)
| | - Benhur Godoi
- Programa de Pós-Graduação em Ambiente e Tecnologias Sustentáveis – PPGATS, Federal University of Fronteira Sul
| | - Carla K. Jurinic
- Programa de Pós-Graduação em Ambiente e Tecnologias Sustentáveis – PPGATS, Federal University of Fronteira Sul
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100
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Candito DA, Ye Y, Quiroz RV, Reutershan MH, Witter D, Gadamsetty SB, Li H, Saurí J, Schneider SE, Lam YH, Palte RL. Development of a Flexible and Robust Synthesis of Tetrahydrofuro[3,4- b]furan Nucleoside Analogues. J Org Chem 2021; 86:5142-5151. [PMID: 33755465 DOI: 10.1021/acs.joc.0c02969] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the context of a PRMT5 inhibitor program, we describe our efforts to develop a flexible and robust strategy to access tetrahydrofuro[3,4-b]furan nucleoside analogues. Ultimately, it was found that a Wolfe type carboetherification from an alkenol derived from d-glucofuranose diacetonide was capable of furnishing the B-ring and installing the desired heteroaryl group in a single step. Using this approach, key intermediate 1.3-A was delivered on a gram scale in a 62% yield and 9.1:1 dr in favor of the desired S-isomer. After deprotection of 1.3-A, a late-stage glycosylation was performed under Mitsunobu conditions to install the pyrrolopyrimidine base. This provided serviceable yields of nucleoside analogues in the range of 31-48% yield. Compound 1.1-C was profiled in biochemical and cellular assays and was demonstrated to be a potent and cellularly active PRMT5 inhibitor, with a PRMT5-MEP50 biochemical IC50 of 0.8 nM, a MCF-7 target engagement EC50 of 3 nM, and a Z138 cell proliferation EC50 of 15 nM. This work sets the stage for the development of new inhibitors of PRMT5 and novel nucleoside chemical matter for alternate drug discovery programs.
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Affiliation(s)
- David A Candito
- Process Research and Development, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - Yingchun Ye
- Discovery Chemistry, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - Ryan V Quiroz
- Discovery Chemistry, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - Michael H Reutershan
- Discovery Chemistry, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - David Witter
- Discovery Chemistry, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - Surendra B Gadamsetty
- Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Hongming Li
- External Capabilities, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - Josep Saurí
- Analytical Enabling Technologies, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - Sebastian E Schneider
- Computational and Structural Chemistry, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - Yu-Hong Lam
- Computational and Structural Chemistry, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Rachel L Palte
- Computational and Structural Chemistry, Merck & Co., Inc., Boston, Massachusetts 02115, United States
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