1
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Gong Y, Yan L, Guo Z. Na 2CO 3-promoted synthesis of thiocarbamates from isocyanates and thiols under mild conditions. Org Biomol Chem 2024; 22:6277-6281. [PMID: 39040031 DOI: 10.1039/d4ob01068j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
Here, we developed an efficient method for the synthesis of s-alkyl or aryl thiocarbamates catalyzed by Na2CO3 under mild conditions using alkyl or aryl isocyanates and thiophenols or thiols. In situ reaction with deuterated tetrahydrofuran (d8-THF) was carried out to investigate the reaction mechanism. This method has the advantages of high yield, good functional group tolerance and high atom economy.
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Affiliation(s)
- Yingbin Gong
- Scientific Instrument Center, Shanxi University, Taiyuan, 030006, P.R. China.
- Shanxi School of Traditional Chinese Medicine, Jinzhong 030619, P.R. China
| | - Leilei Yan
- Scientific Instrument Center, Shanxi University, Taiyuan, 030006, P.R. China.
| | - Zhiqiang Guo
- Scientific Instrument Center, Shanxi University, Taiyuan, 030006, P.R. China.
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2
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Li W, Lv M, Luo X, Wang Z, Song Q, Yu X. Direct synthesis of carbamates, thiocarbamates, and ureas from Boc-protected amines: a sustainable and efficient approach. RSC Adv 2024; 14:20656-20659. [PMID: 38952938 PMCID: PMC11215497 DOI: 10.1039/d4ra03683b] [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: 05/19/2024] [Accepted: 06/13/2024] [Indexed: 07/03/2024] Open
Abstract
In the quest for sustainable and efficient synthetic methodologies within medicinal chemistry, the synthesis of carbamates and their derivatives holds a pivotal role due to their widespread application in bioactive compounds. This investigation unveils a novel methodology for the straightforward transformation of Boc-protected amines into carbamates, thiocarbamates, and ureas, utilizing tert-butoxide lithium as the sole base. This approach effectively obviates the necessity for hazardous reagents and metal catalysts, presenting marked enhancements compared to traditional synthetic pathways. Notably, the method demonstrates facile scalability to gram-level production. This study contributes to the advancement of sustainable synthetic methodologies, offering a more benign and efficient alternative for the synthesis of key chemical intermediates with implications for broad pharmaceutical and agrochemical applications.
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Affiliation(s)
- Wanyong Li
- Department of Chemistry, Xihua University Chengdu 610039 China
| | - Mengting Lv
- Department of Chemistry, Xihua University Chengdu 610039 China
| | - Xiaolin Luo
- Department of Chemistry, Xihua University Chengdu 610039 China
| | - Zhouyu Wang
- Department of Chemistry, Xihua University Chengdu 610039 China
- Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province Yibin 644000 China
| | - Qiao Song
- Department of Chemistry, Xihua University Chengdu 610039 China
- Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province Yibin 644000 China
| | - Xiaoqi Yu
- Department of Chemistry, Xihua University Chengdu 610039 China
- Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province Yibin 644000 China
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3
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Sun Q, Xu Y, Yang L, Zheng CL, Wang G, Wang HB, Fang Z, Wang CS, Guo K. Direct C-H Sulfuration: Synthesis of Disulfides, Dithiocarbamates, Xanthates, Thiocarbamates and Thiocarbonates. Chem Asian J 2024; 19:e202400124. [PMID: 38421239 DOI: 10.1002/asia.202400124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 03/02/2024]
Abstract
In light of the important biological activities and widespread applications of organic disulfides, dithiocarbamates, xanthates, thiocarbamates and thiocarbonates, the continual persuit of efficient methods for their synthesis remains crucial. Traditionally, the preparation of such compounds heavily relied on intricate multi-step syntheses and the use of highly prefunctionalized starting materials. Over the past two decades, the direct sulfuration of C-H bonds has evolved into a straightforward, atom- and step-economical method for the preparation of organosulfur compounds. This review aims to provide an up-to-date discussion on direct C-H disulfuration, dithiocarbamation, xanthylation, thiocarbamation and thiocarbonation, with a special focus on describing scopes and mechanistic aspects. Moreover, the synthetic limitations and applications of some of these methodologies, along with the key unsolved challenges to be addressed in the future are also discussed. The majority of examples covered in this review are accomplished via metal-free, photochemical or electrochemical approaches, which are in alignment with the overraching objectives of green and sustainable chemistry. This comprehensive review aims to consolidate recent advancements, providing valuable insights into the dynamic landscape of efficient and sustainable synthetic strategies for these crucial classes of organosulfur compounds.
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Affiliation(s)
- Qiao Sun
- School of Food Science and Light Industry, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, PR China
| | - Yuan Xu
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, 637371, Singapore
| | - Liu Yang
- School of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, PR China
| | - Chun-Ling Zheng
- School of Food Science and Light Industry, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, PR China
| | - Guowei Wang
- School of Food Science and Light Industry, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, PR China
| | - Hai-Bo Wang
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, PR China
| | - Zheng Fang
- School of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, PR China
| | - Chang-Sheng Wang
- School of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, PR China
| | - Kai Guo
- School of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, PR China
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4
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Ibara M, Abe T, Sawada D. Chemo- and Site-Selective Replacement of N-Terminal Carbamates in Peptides. Org Lett 2022; 24:2131-2136. [PMID: 35285651 DOI: 10.1021/acs.orglett.2c00370] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In peptide synthesis, it is important to distinguish the terminal amino group and carry out the selective transformation of only the N-terminal protecting group. We describe herein a reaction for the chemo- and site-selective replacement of carbamates with various other carbamates only at the N-terminus of peptides. We demonstrate the scope of carbamates and peptides and the introduction of fluorine into a peptide. This strategy is applicable to the late stage of peptide synthesis.
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Affiliation(s)
- Miho Ibara
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 7008530, Japan
| | - Takumi Abe
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 7008530, Japan
| | - Daisuke Sawada
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 7008530, Japan
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5
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Frankowska K, Sochacka E. New efficient synthesis of tRNA related adenosines bearing the hydantoin ring (ct6A, ms2ct6A) by intramolecular cyclization of N6-(N-Boc-α-aminoacyl)-adenosine derivatives. Chembiochem 2022; 23:e202100655. [PMID: 34997683 DOI: 10.1002/cbic.202100655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/07/2022] [Indexed: 11/10/2022]
Abstract
A novel and efficient way for synthesis of N6-hydantoin modified adenosines, which utilizes readily available N6-(N-Boc-α-aminoacyl)-adenosine derivatives, was developed. The procedure is based on the epimerization free Tf2O-mediated conversion of the Boc group into an isocyanate moiety, followed by intramolecular cyclization. Using this method two recently discovered hydantoin modified tRNA adenosines, i.e. cyclic N6-threonylcarbamoyl-adenosine (ct6A) and 2-methylthio-N6-threonylcarbamoyladenosine (ms2ct6A) were prepared in good yields.
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Affiliation(s)
- Katarzyna Frankowska
- Lodz University of Technology: Politechnika Lodzka, Faculty of Chemistry, POLAND
| | - Elzbieta Sochacka
- Lodz University of Technology, Faculty of Chemistry, ul. Żeromskiego 116, 90-924, Łódź, POLAND
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6
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Gallagher-Duval S, Lapointe V, Bélanger G. Functionalized Polyhydroquinolines from Amino Acids Using a Key One-Pot Cyclization Cascade and Application to the Synthesis of (±)-Δ 7-Mesembrenone. Org Lett 2021; 23:8606-8611. [PMID: 34694806 DOI: 10.1021/acs.orglett.1c03323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Substituted polyhydroquinolines are ubiquitous skeletal cores found in drugs and bioactive natural products. As a new route to access this motif, we successfully developed a one-pot cyclization cascade with high chemocontrol and diastereoselectivity. The sequence generates two cycles, three carbon-carbon bonds, and an all-carbon quaternary center in a highly convergent process. Functionalized polyhydroquinolines and congeners can be accessed from commercially available amino acids. This versatile and robust strategy was applied to the synthesis of (±)-Δ7-mesembrenone.
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Affiliation(s)
- Shawn Gallagher-Duval
- Département de chimie, Université de Sherbrooke, 2500, boulevard de l'Université, Sherbrooke, Québec, Canada J1K 2R1
| | - Vincent Lapointe
- Département de chimie, Université de Sherbrooke, 2500, boulevard de l'Université, Sherbrooke, Québec, Canada J1K 2R1
| | - Guillaume Bélanger
- Département de chimie, Université de Sherbrooke, 2500, boulevard de l'Université, Sherbrooke, Québec, Canada J1K 2R1
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7
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Waibel KA, Barther D, Malliaridou T, Moatsou D, Meier MAR. One‐Pot Synthesis of Thiocarbamates. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Kevin A. Waibel
- Laboratory of Applied Chemistry Institute of Biological and Chemical Systems – Functional Material Systems (IBCS-FMS) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Dennis Barther
- Laboratory of Applied Chemistry, Institute of Organic Chemistry (IOC) Karlsruhe Institute of Technology (KIT) Straße am Forum 7 76131 Karlsruhe Germany
| | - Triantafillia Malliaridou
- Laboratory of Applied Chemistry, Institute of Organic Chemistry (IOC) Karlsruhe Institute of Technology (KIT) Straße am Forum 7 76131 Karlsruhe Germany
| | - Dafni Moatsou
- Laboratory of Applied Chemistry Institute of Biological and Chemical Systems – Functional Material Systems (IBCS-FMS) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Laboratory of Applied Chemistry, Institute of Organic Chemistry (IOC) Karlsruhe Institute of Technology (KIT) Straße am Forum 7 76131 Karlsruhe Germany
| | - Michael A. R. Meier
- Laboratory of Applied Chemistry Institute of Biological and Chemical Systems – Functional Material Systems (IBCS-FMS) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Laboratory of Applied Chemistry, Institute of Organic Chemistry (IOC) Karlsruhe Institute of Technology (KIT) Straße am Forum 7 76131 Karlsruhe Germany
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8
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Debiec K, Sochacka E. Efficient access to 3'- O-phosphoramidite derivatives of tRNA related N 6-threonylcarbamoyladenosine (t 6A) and 2-methylthio- N 6-threonylcarbamoyladenosine (ms 2t 6A). RSC Adv 2021; 11:1992-1999. [PMID: 35424152 PMCID: PMC8693639 DOI: 10.1039/d0ra09803e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 12/15/2020] [Indexed: 12/11/2022] Open
Abstract
An efficient method of ureido linkage formation during epimerization-free one-pot synthesis of protected hypermodified N 6-threonylcarbamoyladenosine (t6A) and its 2-SMe analog (ms2t6A) was developed. The method is based on a Tf2O-mediated direct conversion of the N-Boc-protecting group of N-Boc-threonine into the isocyanate derivative, followed by reaction with the N 6 exo-amine function of the sugar protected nucleoside (yield 86-94%). Starting from 2',3',5'-tri-O-acetyl protected adenosine or 2-methylthioadenosine, the corresponding 3'-O-phosphoramidite monomers were obtained in 48% and 42% overall yield (5 step synthesis). In an analogous synthesis, using the 2'-O-(tert-butyldimethylsilyl)-3',5'-O-(di-tert-butylsilylene) protection system at the adenosine ribose moiety, the t6A-phosphoramidite monomer was obtained in a less laborious manner and in a remarkably better yield of 74%.
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Affiliation(s)
- Katarzyna Debiec
- Institute of Organic Chemistry, Lodz University of Technology Zeromskiego 116 90-924 Lodz Poland
| | - Elzbieta Sochacka
- Institute of Organic Chemistry, Lodz University of Technology Zeromskiego 116 90-924 Lodz Poland
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9
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Doğan ŞD, Çetinkaya Y, Buran S, Yıldırım SÖ, Butcher RJ. Chemoselective synthesis, X-ray characterization and DFT studies of new organic single crystal: S-(2-aminophenyl) cyclohexylcarbamothioate. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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10
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Záborský O, Petrovičová Ľ, Doháňošová J, Moncol J, Fischer R. Simple and efficient synthesis of bicyclic enol-carbamates: access to brabantamides and their analogues. RSC Adv 2020; 10:6790-6793. [PMID: 35493865 PMCID: PMC9049743 DOI: 10.1039/d0ra00796j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 01/28/2020] [Indexed: 11/21/2022] Open
Abstract
A simple and short synthesis of bicyclic enol-carbamates with high E/Z selectivity and the synthesis of brabantamide A analogue are presented.
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Affiliation(s)
- Ondrej Záborský
- Institute of Organic Chemistry
- Catalysis and Petrochemistry
- Slovak University of Technology in Bratislava
- Bratislava
- Slovak Republic
| | - Ľudmila Petrovičová
- Institute of Organic Chemistry
- Catalysis and Petrochemistry
- Slovak University of Technology in Bratislava
- Bratislava
- Slovak Republic
| | - Jana Doháňošová
- Central Laboratories
- Slovak University of Technology in Bratislava
- Bratislava
- Slovak Republic
| | - Ján Moncol
- Institute of Inorganic Chemistry, Technology and Materials
- Slovak University of Technology in Bratislava
- Bratislava
- Slovak Republic
| | - Róbert Fischer
- Institute of Organic Chemistry
- Catalysis and Petrochemistry
- Slovak University of Technology in Bratislava
- Bratislava
- Slovak Republic
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11
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Li S, Khan R, Zhang X, Yang Y, Wang Z, Zhan Y, Dai Y, Liu YE, Fan B. One stone two birds: cobalt-catalyzed in situ generation of isocyanates and benzyl alcohols for the synthesis of N-aryl carbamates. Org Biomol Chem 2019; 17:5891-5896. [PMID: 31166354 DOI: 10.1039/c9ob00924h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An efficient method for the synthesis of N-aryl carbamates from N-Boc-protected amines has been developed. The cobalt-catalyzed in situ generation of isocyanates from N-Boc-protected amines and benzyl alcohols from benzyl formates has been achieved for the first time, which in turn furnished the corresponding benzyl carbamates in moderate to high yields. The reaction was catalyzed by CoI2 with tris-(4-dimethylaminophenyl)-phosphine as the ligand and zinc powder as the reductant. The developed reaction conditions were found to be compatible for aromatic amines with both electron-donating and -withdrawing substituents.
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Affiliation(s)
- Sida Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China.
| | - Ruhima Khan
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China.
| | - Xia Zhang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China.
| | - Yong Yang
- Chongqing Academy of Chinese Materia Medica, Chongqing, 400065, China.
| | - Zheting Wang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China.
| | - Yong Zhan
- Chongqing Academy of Chinese Materia Medica, Chongqing, 400065, China.
| | - Yuze Dai
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China.
| | - Yue-E Liu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China.
| | - Baomin Fan
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China.
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12
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Bao P, Wang L, Yue H, Shao Y, Wen J, Yang D, Zhao X, Wang H, Wei W. Metal-Free Catalytic Synthesis of Thiocarbamates Using Sodium Sulfinates as the Sulfur Source. J Org Chem 2019; 84:2976-2983. [PMID: 30775916 DOI: 10.1021/acs.joc.8b02844] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel molecular iodine-catalyzed protocol for the construction of thiocarbamates from readily available sodium sulfinates, isocyanides, and water has been described. The present methodology offers a facile and practical route to a variety of thiocarbamates in moderate to good yields with favorable functional group tolerance by use odorless sodium sulfinates as the sulfur source. The mechanistic studies suggest the present transformation involves a radical process.
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Affiliation(s)
- Pengli Bao
- School of Chemistry and Chemical Engineering , Qufu Normal University , Qufu 273165 , Shandong , China
| | - Leilei Wang
- School of Chemistry and Chemical Engineering , Qufu Normal University , Qufu 273165 , Shandong , China
| | - Huilan Yue
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology , Chinese Academy of Sciences , Xining 810008 , Qinghai , China
| | - Yun Shao
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology , Chinese Academy of Sciences , Xining 810008 , Qinghai , China
| | - Jiangwei Wen
- School of Chemistry and Chemical Engineering , Qufu Normal University , Qufu 273165 , Shandong , China
| | - Daoshan Yang
- School of Chemistry and Chemical Engineering , Qufu Normal University , Qufu 273165 , Shandong , China.,College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , Shandong , China
| | - Xiaohui Zhao
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology , Chinese Academy of Sciences , Xining 810008 , Qinghai , China
| | - Hua Wang
- School of Chemistry and Chemical Engineering , Qufu Normal University , Qufu 273165 , Shandong , China
| | - Wei Wei
- School of Chemistry and Chemical Engineering , Qufu Normal University , Qufu 273165 , Shandong , China.,College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , Shandong , China
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13
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Deng JC, Zhang JR, Li MH, Huang JC, Lai ZS, Tong XY, Cui ZN, Tang RY. Direct thiocarbamation of imidazoheterocycles via dual C–H sulfurization. Org Biomol Chem 2019; 17:7854-7857. [DOI: 10.1039/c9ob01403a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Direct thiocarbamation via dual C–H sulfurization.
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Affiliation(s)
- Jian-Chao Deng
- Department of Applied Chemistry
- College of Materials and Energy
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources
- South China Agricultural University
- Guangzhou 510642
| | - Jun-Rong Zhang
- Department of Applied Chemistry
- College of Materials and Energy
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources
- South China Agricultural University
- Guangzhou 510642
| | - Ming-Hua Li
- Department of Applied Chemistry
- College of Materials and Energy
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources
- South China Agricultural University
- Guangzhou 510642
| | - Jie-Cheng Huang
- Department of Applied Chemistry
- College of Materials and Energy
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources
- South China Agricultural University
- Guangzhou 510642
| | - Zhi-Sheng Lai
- Department of Applied Chemistry
- College of Materials and Energy
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources
- South China Agricultural University
- Guangzhou 510642
| | - Xin-Yu Tong
- Department of Applied Chemistry
- College of Materials and Energy
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources
- South China Agricultural University
- Guangzhou 510642
| | - Zi-Ning Cui
- Department of Applied Chemistry
- College of Materials and Energy
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources
- South China Agricultural University
- Guangzhou 510642
| | - Ri-Yuan Tang
- Department of Applied Chemistry
- College of Materials and Energy
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources
- South China Agricultural University
- Guangzhou 510642
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14
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Bao WH, Wu C, Wang JT, Xia W, Chen P, Tang Z, Xu X, He WM. Molecular iodine-mediated synthesis of thiocarbamates from thiols, isocyanides and water under metal-free conditions. Org Biomol Chem 2018; 16:8403-8407. [PMID: 30215086 DOI: 10.1039/c8ob01820k] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A simple and practical molecular iodine-mediated method for the efficient construction of thiocarbamates from isocyanides, thiols and water under metal-free and mild conditions has been developed. A variety of thiocarbamates were easily synthesized through this methodology, which has the advantages of simple operation, eco-friendly conditions, good functional group tolerance, and readily accessible raw materials.
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Affiliation(s)
- Wen-Hu Bao
- Hunan Provincial Engineering Research Center for Ginkgo biloba, Hunan University of Science and Engineering, Yongzhou 425100, China
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15
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Wei W, Bao P, Yue H, Liu S, Wang L, Li Y, Yang D. Visible-Light-Enabled Construction of Thiocarbamates from Isocyanides, Thiols, and Water at Room Temperature. Org Lett 2018; 20:5291-5295. [DOI: 10.1021/acs.orglett.8b02231] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Wei Wei
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Pengli Bao
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Huilan Yue
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, Qinghai 810008, China
| | - Sitong Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Leilei Wang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Yudong Li
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Daoshan Yang
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
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16
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Khanapurmath N, Kulkarni MV, Anil Kumar GN. Modified Riemschneider reaction as a new route for the synthesis of coumarinyl and 1-aza coumarinyl thioethers. J Sulphur Chem 2018. [DOI: 10.1080/17415993.2018.1499744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
| | - Manohar V. Kulkarni
- Department of Studies in Chemistry, Karanatak University, Dharwad, KA, India
| | - G. N. Anil Kumar
- Department of Physics, M.S. Ramaiah Institute of Technology, Bangalore, KA, India
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17
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Krátký M, Štěpánková Š, Vorčáková K, Vinšová J. Investigation of salicylanilide and 4-chlorophenol-based N-monosubstituted carbamates as potential inhibitors of acetyl- and butyrylcholinesterase. Bioorg Chem 2018; 80:668-673. [PMID: 30059892 DOI: 10.1016/j.bioorg.2018.07.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/13/2018] [Accepted: 07/15/2018] [Indexed: 11/15/2022]
Abstract
Based on the presence of carbamate moiety, twenty salicylanilide N-monosubstituted carbamates concomitantly with their parent salicylanilides and five newly prepared 4-chlorophenyl carbamates obtained from isocyanates were investigated using Ellman's method for their in vitro inhibitory activity against acetylcholinesterase (AChE) from electric eel and butyrylcholinesterase (BChE) from equine serum. The carbamates and salicylanilides exhibited mostly a moderate inhibition of both cholinesterase enzymes with IC50 values ranging from 5 to 235 µM. IC50 values for AChE were in a narrower concentration range when compared to BChE, but many of the compounds produced a balanced inhibition of both cholinesterases. The derivatives were comparable or superior to rivastigmine for AChE inhibition, but only a few of carbamates also for BChE. Several structure-activity relationships were identified, e.g., N-phenethylcarbamates produce clearly favourable BChE inhibition. The compounds also share convenient physicochemical properties for CNS penetration.
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Affiliation(s)
- Martin Krátký
- Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Šárka Štěpánková
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Katarína Vorčáková
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Jarmila Vinšová
- Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
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Wang M, Han J, Si X, Hu Y, Zhu J, Sun X. Effective approach to ureas through organocatalyzed one-pot process. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.11.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Asai M, Takemoto Y, Deguchi A, Hattori Y, Makabe H. An asymmetric synthesis of (+)-monomorine I. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.tetasy.2017.09.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Bana P, Lakó Á, Kiss NZ, Béni Z, Szigetvári Á, Kóti J, Túrós GI, Éles J, Greiner I. Synthesis of Urea Derivatives in Two Sequential Continuous-Flow Reactors. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Péter Bana
- Department
of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - Ágnes Lakó
- Department
of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - Nóra Zsuzsa Kiss
- Department
of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - Zoltán Béni
- Gedeon Richter Plc., PO Box 27, 1475 Budapest, Hungary
| | | | - János Kóti
- Gedeon Richter Plc., PO Box 27, 1475 Budapest, Hungary
| | | | - János Éles
- Gedeon Richter Plc., PO Box 27, 1475 Budapest, Hungary
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Deng JC, Zhuang SB, Liu QZ, Lin ZW, Su YL, Chen JH, Tang RY. Metal-free direct thiocarbamation of imidazopyridines with carbamoyl chloride and elemental sulfur. RSC Adv 2017. [DOI: 10.1039/c7ra10819b] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Metal-free direct thiocarbamation of imidazopyridines using elemental sulfur.
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Affiliation(s)
- Jian-Chao Deng
- Department of Applied Chemistry
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- China
| | - Shi-Bin Zhuang
- Department of Applied Chemistry
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- China
| | - Quan-Zhu Liu
- Department of Applied Chemistry
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- China
| | - Zi-Wei Lin
- Department of Applied Chemistry
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- China
| | - Yu-Liang Su
- Department of Applied Chemistry
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- China
| | - Jia-Hao Chen
- Department of Applied Chemistry
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- China
| | - Ri-Yuan Tang
- Department of Applied Chemistry
- College of Materials and Energy
- South China Agricultural University
- Guangzhou 510642
- China
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