1
|
Bennett JM, Narwal SK, Kabeche S, Abegg D, Thathy V, Hackett F, Yeo T, Li VL, Muir R, Faucher F, Lovell S, Blackman MJ, Adibekian A, Yeh E, Fidock DA, Bogyo M. Mixed alkyl/aryl phosphonates identify metabolic serine hydrolases as antimalarial targets. Cell Chem Biol 2024:S2451-9456(24)00308-8. [PMID: 39137783 DOI: 10.1016/j.chembiol.2024.07.006] [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: 12/22/2023] [Revised: 06/20/2024] [Accepted: 07/15/2024] [Indexed: 08/15/2024]
Abstract
Malaria, caused by Plasmodium falciparum, remains a significant health burden. One major barrier for developing antimalarial drugs is the ability of the parasite to rapidly generate resistance. We previously demonstrated that salinipostin A (SalA), a natural product, potently kills parasites by inhibiting multiple lipid metabolizing serine hydrolases, a mechanism that results in a low propensity for resistance. Given the difficulty of employing natural products as therapeutic agents, we synthesized a small library of lipidic mixed alkyl/aryl phosphonates as bioisosteres of SalA. Two constitutional isomers exhibited divergent antiparasitic potencies that enabled the identification of therapeutically relevant targets. The active compound kills parasites through a mechanism that is distinct from both SalA and the pan-lipase inhibitor orlistat and shows synergistic killing with orlistat. Our compound induces only weak resistance, attributable to mutations in a single protein involved in multidrug resistance. These data suggest that mixed alkyl/aryl phosphonates are promising, synthetically tractable antimalarials.
Collapse
Affiliation(s)
- John M Bennett
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Sunil K Narwal
- Department of Microbiology and Immunology, Columbia University Medical Center, New York, NY, USA; Center for Malaria Therapeutics and Antimicrobial Resistance, Columbia University Medical Center, New York, NY, USA
| | - Stephanie Kabeche
- Department of Biochemistry, Stanford University School of Medicine, Stanford, CA, USA
| | - Daniel Abegg
- Department of Chemistry, University of Illinois Chicago, Chicago, IL, USA
| | - Vandana Thathy
- Department of Microbiology and Immunology, Columbia University Medical Center, New York, NY, USA; Center for Malaria Therapeutics and Antimicrobial Resistance, Columbia University Medical Center, New York, NY, USA
| | - Fiona Hackett
- Malaria Biochemistry Laboratory, Francis Crick Institute, London NW1 1AT, UK
| | - Tomas Yeo
- Department of Microbiology and Immunology, Columbia University Medical Center, New York, NY, USA; Center for Malaria Therapeutics and Antimicrobial Resistance, Columbia University Medical Center, New York, NY, USA
| | - Veronica L Li
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Ryan Muir
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Franco Faucher
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Scott Lovell
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Michael J Blackman
- Malaria Biochemistry Laboratory, Francis Crick Institute, London NW1 1AT, UK; Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK
| | | | - Ellen Yeh
- Department of Biochemistry, Stanford University School of Medicine, Stanford, CA, USA; Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - David A Fidock
- Department of Microbiology and Immunology, Columbia University Medical Center, New York, NY, USA; Center for Malaria Therapeutics and Antimicrobial Resistance, Columbia University Medical Center, New York, NY, USA; Division of Infectious Diseases, Columbia University Medical Center, New York, NY 10032, USA
| | - Matthew Bogyo
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA.
| |
Collapse
|
2
|
Bennett JM, Narwal SK, Kabeche S, Abegg D, Hackett F, Yeo T, Li VL, Muir RK, Faucher FF, Lovell S, Blackman MJ, Adibekian A, Yeh E, Fidock DA, Bogyo M. Mixed Alkyl/Aryl Phosphonates Identify Metabolic Serine Hydrolases as Antimalarial Targets. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.11.575224. [PMID: 38260474 PMCID: PMC10802587 DOI: 10.1101/2024.01.11.575224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Malaria, caused by Plasmodium falciparum, remains a significant health burden. A barrier for developing anti-malarial drugs is the ability of the parasite to rapidly generate resistance. We demonstrated that Salinipostin A (SalA), a natural product, kills parasites by inhibiting multiple lipid metabolizing serine hydrolases, a mechanism with a low propensity for resistance. Given the difficulty of employing natural products as therapeutic agents, we synthesized a library of lipidic mixed alkyl/aryl phosphonates as bioisosteres of SalA. Two constitutional isomers exhibited divergent anti-parasitic potencies which enabled identification of therapeutically relevant targets. We also confirm that this compound kills parasites through a mechanism that is distinct from both SalA and the pan-lipase inhibitor, Orlistat. Like SalA, our compound induces only weak resistance, attributable to mutations in a single protein involved in multidrug resistance. These data suggest that mixed alkyl/aryl phosphonates are a promising, synthetically tractable anti-malarials with a low-propensity to induce resistance.
Collapse
Affiliation(s)
- John M Bennett
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Sunil K Narwal
- Department of Microbiology and Immunology, Columbia University Medical Center, New York, NY, USA
- Center for Malaria Therapeutics and Antimicrobial Resistance, Columbia University Medical Center, New York, NY, USA
| | - Stephanie Kabeche
- Department of Biochemistry, Stanford University School of Medicine, Stanford, CA, USA
| | - Daniel Abegg
- Department of Chemistry, University of Illinois Chicago, Chicago, IL, USA
| | - Fiona Hackett
- Malaria Biochemistry Laboratory, Francis Crick Institute, London NW1 1AT, UK
| | - Tomas Yeo
- Department of Microbiology and Immunology, Columbia University Medical Center, New York, NY, USA
- Center for Malaria Therapeutics and Antimicrobial Resistance, Columbia University Medical Center, New York, NY, USA
| | - Veronica L Li
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Ryan K Muir
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | | | - Scott Lovell
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Michael J Blackman
- Malaria Biochemistry Laboratory, Francis Crick Institute, London NW1 1AT, UK
- Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK
| | | | - Ellen Yeh
- Department of Biochemistry, Stanford University School of Medicine, Stanford, CA, USA
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - David A Fidock
- Department of Microbiology and Immunology, Columbia University Medical Center, New York, NY, USA
- Center for Malaria Therapeutics and Antimicrobial Resistance, Columbia University Medical Center, New York, NY, USA
- Division of Infectious Diseases, Columbia University Medical Center, New York, NY 10032 USA
| | - Matthew Bogyo
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
| |
Collapse
|
3
|
Bhat MY, Padder AH, Gupta R, Ahmed QN. Tf 2O-Promoted Regioselective Heteronucleophilic Ring-Opening Approaches of Tetrahydrofuran. J Org Chem 2023; 88:14323-14338. [PMID: 37817465 DOI: 10.1021/acs.joc.3c01065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2023]
Abstract
The ring-opening functionalization strategy in tetrahydrofuran (THF) represents an ideal approach to access different valuable structures. Herein, we report different operationally simple, efficient, unique, and practical regioselective heteronucleophilic ring-opening strategies for the THF system. Tf2O, which is a strong electrophilic activator, was found to generate a THF triflate intermediate that triggers the nucleophilicity of nitriles (Nu1) and led to regioselective ring opening in the presence of different nucleophiles (Nu2). Furthermore, the synthesis of different heteronucleophilic ring-opening dimerization products was attributed to the nucleophilicity of Nu2. We also demonstrated that use of borane-tetrahydrofuran (BTHF) can achieve challenging hydride addition in a similar manner.
Collapse
Affiliation(s)
- Mohammad Yaqoob Bhat
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ashiq Hussain Padder
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Raman Gupta
- Department of Chemistry, Govt. College of Engineering and Technology, Jammu 181122, India
| | - Qazi Naveed Ahmed
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
4
|
Yue HQ, Shi DW, Li M, Gao SQ, Sun MX, Zhang S, Yang SD, Yang B. Tf 2O/DMSO-mediated dual activation of aryl phosphinate to access various aryl phosphonates. Chem Commun (Camb) 2023; 59:10817-10820. [PMID: 37602683 DOI: 10.1039/d3cc03250g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
A metal-free method for the dual activation of aryl phosphinate has been developed; the P-H and P-O bonds are sequentially activated by the Tf2O/DMSO system. Without the requirement of metals and unstable P-reagents, this one-pot procedure provides a convenient and practical access to a variety of aryl phosphonates. A mechanism involving twice generation of electrophilic P-species and two SN-processes is proposed on the basis of the control experiments.
Collapse
Affiliation(s)
- Hui-Qi Yue
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, People's Republic of China.
| | - Da-Wei Shi
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, People's Republic of China.
| | - Ming Li
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, People's Republic of China.
| | - Si-Qi Gao
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, People's Republic of China.
| | - Mu-Xin Sun
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, People's Republic of China.
| | - Shun Zhang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, People's Republic of China.
| | - Shang-Dong Yang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Bin Yang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, People's Republic of China.
| |
Collapse
|
5
|
Ash J, Kang JY. Catalyst-free thiophosphorylation of in situ formed ortho-quinone methides. Org Biomol Chem 2023; 21:2370-2374. [PMID: 36852656 DOI: 10.1039/d2ob02169b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
A metal-, chloride reagent and base-free thiophosphorylation reaction of in situ formed ortho-quinone methide (o-QM) to synthesize functionalized thiophosphates has been developed. The reaction is an atom-economical process, producing water as the sole byproduct. (EtO)2P(O)SH functions as both a Brønsted acid and nucleophilic thiolate to produce the o-QM intermediate and the thiophosphate product, respectively. The aza o-QMs were also successfully thiophosphorylated in the presence of catalytic TsOH to form sulfonamido thiophosphates.
Collapse
Affiliation(s)
- Jeffrey Ash
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas, 4505 S. Maryland Parkway, Las Vegas, Nevada, 89154-4003, USA.
| | - Jun Yong Kang
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas, 4505 S. Maryland Parkway, Las Vegas, Nevada, 89154-4003, USA.
| |
Collapse
|
6
|
Sarkar S, Kalek M. Metal-Free S-Arylation of Phosphorothioate Diesters and Related Compounds with Diaryliodonium Salts. Org Lett 2023; 25:671-675. [PMID: 36662120 PMCID: PMC9903330 DOI: 10.1021/acs.orglett.2c04310] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We developed a direct metal-free S-arylation of phosphorothioate diesters using diaryliodonium salts. The method allows for the preparation under simple conditions of a broad range of S-aryl phosphorothioates, including complex molecules (e.g., dinucleotide or TADDOL derivatives), as well as other related organophosphorus compounds arylated at a chalcogen. The reaction proceeds with a full retention of the stereogenic center at the phosphorus atom, opening convenient access to P-chiral products. The mechanism of the reaction was established using DFT calculations.
Collapse
Affiliation(s)
- Sudeep Sarkar
- Centre
of New Technologies, University of Warsaw, Banacha 2C, 02-097 Warsaw, Poland,Faculty
of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Marcin Kalek
- Centre
of New Technologies, University of Warsaw, Banacha 2C, 02-097 Warsaw, Poland,
| |
Collapse
|
7
|
Lebargy C, Legay R, Pfund E, Lequeux T. Access to mixed difluoromethylphosphonates by alkylation of phosphonamidates. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.110017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
8
|
Bhat MY, Ahmed S, Ahmed QN. Tf 2O- and Cu(OTf) 2-Assisted Acylamination Reaction of Unactivated Alcohols with Nitriles: A One-Pot P(IV) Activation, Stereoretention in Cycloalkanols and Deprotection Approach. J Org Chem 2022; 87:11608-11624. [PMID: 35973064 DOI: 10.1021/acs.joc.2c01251] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Described herein is a simple, novel, one-pot acylamination reaction of unactivated alcohols. This reaction employs the combination of PCl3 and triflic anhydride (Tf2O) or copper triflate Cu(OTf)2, which serves as a source of P(IV)-activated complex for nitriles to react under the Ritter-type mechanism. The synthetic utility of Tf2O-promoted reactions was demonstrated by its effectiveness to generate different acylaminated products. By employing Cu(OTf)2, this method represents a rare example of α-selective acylamination reaction. With chiral cycloalkanols, using the Cu(OTf)2-promoted procedure, acylaminated products are formed with complete retention of configuration. The synthetic utility of the copper-assisted reaction in acetonitrile was readily demonstrated as a mild deprotection strategy.
Collapse
Affiliation(s)
- Mohammad Yaqoob Bhat
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sajjad Ahmed
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Qazi Naveed Ahmed
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
9
|
Kang JY, Huang H. Triflic Anhydride (Tf2O)-Activated Transformations of Amides, Sulfoxides and Phosphorus Oxides via Nucleophilic Trapping. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1679-8205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractTrifluoromethanesulfonic anhydride (Tf2O) is utilized as a strong electrophilic activator in a wide range of applications in synthetic organic chemistry, leading to the transient generation of a triflate intermediate. This versatile triflate intermediate undergoes nucleophilic trapping with diverse nucleophiles to yield novel compounds. In this review, we describe the features and applications of triflic anhydride in organic synthesis reported in the past decade, especially in amide, sulfoxide, and phosphorus oxide chemistry through electrophilic activation. A plausible mechanistic pathway for each important reaction is also discussed.1 Introduction2 Amide Chemistry2.1 Carbon Nucleophiles2.2 Hydrogen Nucleophiles2.3 Nitrogen Nucleophiles2.4 Oxygen and Sulfur Nucleophiles2.5 hosphorus Nucleophiles2.6 A Vilsmeier-Type Reagent2.7 Umpolung Reactivity in Amides3 Sulfoxide Chemistry3.1 Oxygen Nucleophiles3.2 Carbon Nucleophiles3.3 Nitrogen Nucleophiles3.4 Thionium Reagents4 Phosphorus Chemistry4.1 Hendrickson’s Reagent4.2 Diaryl Phosphine Oxides4.3 Phosphonates, Phosphates and Phosphinates5 Conclusion and Outlook
Collapse
Affiliation(s)
- Jun Yong Kang
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University
| |
Collapse
|
10
|
Beletskaya IP, Titanyuk ID. Synthesis of α-Aryldiazophosphonates via a Diazo Transfer Reaction. J Org Chem 2022; 87:2748-2757. [PMID: 35191306 DOI: 10.1021/acs.joc.1c02673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The simple synthetic procedure for preparation of α-aryl-α-diazophosphonates via a diazo transfer reaction is proposed. Benzylphosphonates reacted with tosyl azide (TsN3) in the presence of potassium tert-butoxide (KOtBu) to afford diazophosphonates in a yield up to 79%. The proposed method is general. The reaction uses easily available starting materials, tolerates various functional groups, and may be applied for multi-gram scale synthesis.
Collapse
Affiliation(s)
- Irina P Beletskaya
- Department of Chemistry, Moscow State University, Leninskie Gory 1-3, Moscow 11999, Russian Federation
| | - Igor D Titanyuk
- Department of Chemistry, Moscow State University, Leninskie Gory 1-3, Moscow 11999, Russian Federation
| |
Collapse
|
11
|
A solvent-free method for the preparation of phosphinates from P(O)-OH compounds with alkyl chlorides. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
12
|
Rather SA, Bhat MY, Hussain F, Ahmed QN. Sulfonyl-Promoted Michaelis-Arbuzov-Type Reaction: An Approach to S/Se-P Bonds. J Org Chem 2021; 86:13644-13663. [PMID: 34516111 DOI: 10.1021/acs.joc.1c01681] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
By facilitating the chemical conversion of thiols to thiosulfonates, phosphoramidite/phosphite bearing sp3-hybridized carbon serves as an ideal coupling material to forge new connections at room temperature. In this work, a functional group-induced, additive-free, novel, S-P bond-forming approach is presented. This protocol exhibits good functional group tolerance with wide applications that include phosphorylation of cysteine derivatives, development of a one-pot approach to mixed unsymmetrical thiophosphonates, and extension of the concept to different Se-P bonds. Meticulously, our reaction also generated a S-P bond against cyclic 1,2-dithiane-1-dioxide in a byproduct-free manner. These Michaelis-Arbuzov-type reactions are easy to conduct, work efficiently in a reduced reaction time, and are applicable to gram-scale preparation as well.
Collapse
Affiliation(s)
- Suhail A Rather
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Mohammad Yaqoob Bhat
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Feroze Hussain
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Qazi Naveed Ahmed
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
13
|
Selective Esterification of Phosphonic Acids. Molecules 2021; 26:molecules26185637. [PMID: 34577108 PMCID: PMC8466293 DOI: 10.3390/molecules26185637] [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: 07/30/2021] [Revised: 09/01/2021] [Accepted: 09/13/2021] [Indexed: 11/17/2022] Open
Abstract
Here, we report straightforward and selective synthetic procedures for mono- and diesterification of phosphonic acids. A series of alkoxy group donors were studied and triethyl orthoacetate was found to be the best reagent as well as a solvent for the performed transformations. An important temperature effect on the reaction course was discovered. Depending on the reaction temperature, mono- or diethyl esters of phosphonic acid were obtained exclusively with decent yields. The substrate scope of the proposed methodology was verified on aromatic as well as aliphatic phosphonic acids. The designed method can be successfully applied for small- and large-scale experiments without significant loss of selectivity or reaction yield. Several devoted experiments were performed to give insight into the reaction mechanism. At 30 °C, monoesters are formed via an intermediate (1,1-diethoxyethyl ester of phosphonic acid). At higher temperatures, similar intermediate forms give diesters or stable and detectable pyrophosphonates which were also consumed to give diesters. 31P NMR spectroscopy was used to assign the structure of pyrophosphonate as well as to monitor the reaction course. No need for additional reagents and good accessibility and straightforward purification are the important aspects of the developed protocols.
Collapse
|
14
|
Xin N, Lian Y, Lv Y, Wang Y, Huang XQ, Zhao CQ. Markovnikov-addition of H-phosphonates to terminal alkynes under metal- and solvent-free conditions. RSC Adv 2021; 11:24991-24994. [PMID: 35481042 PMCID: PMC9036860 DOI: 10.1039/d1ra04306d] [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: 06/03/2021] [Accepted: 07/06/2021] [Indexed: 11/21/2022] Open
Abstract
An addition of H-phosphonates to aryl alkynes was realized under solvent- and metal-free conditions, affording Markovnikov-selective α-vinylphosphonates in moderate to good yields. A wide range of aryl alkynes could be applied for the reaction. A tentative mechanism of addition-substitution was proposed based on in situ 31P {1H} NMR studies.
Collapse
Affiliation(s)
- Nana Xin
- Institution of Functional Organic Molecules and Materials, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, College of Chemistry and Chemical Engineering Liaocheng Shandong 252059 China
| | - Yongjian Lian
- Institution of Functional Organic Molecules and Materials, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, College of Chemistry and Chemical Engineering Liaocheng Shandong 252059 China
| | - Yongzheng Lv
- Institution of Functional Organic Molecules and Materials, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, College of Chemistry and Chemical Engineering Liaocheng Shandong 252059 China
| | - Yongjie Wang
- Liaocheng Power Supply Company Liaocheng Shandong 252059 China
| | - Xian-Qiang Huang
- Institution of Functional Organic Molecules and Materials, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, College of Chemistry and Chemical Engineering Liaocheng Shandong 252059 China
| | - Chang-Qiu Zhao
- Institution of Functional Organic Molecules and Materials, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, College of Chemistry and Chemical Engineering Liaocheng Shandong 252059 China
| |
Collapse
|
15
|
Numan A, Brichacek M. Asymmetric Synthesis of Stereogenic Phosphorus P(V) Centers Using Chiral Nucleophilic Catalysis. Molecules 2021; 26:3661. [PMID: 34203996 PMCID: PMC8232703 DOI: 10.3390/molecules26123661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/08/2021] [Accepted: 06/11/2021] [Indexed: 11/21/2022] Open
Abstract
Organophosphates have been widely used in agrochemistry, as reagents for organic synthesis, and in biochemistry. Phosphate mimics possessing four unique substituents, and thereby a chirality center, are useful in transition metal catalysis and as nucleotide therapeutics. The catalytic, stereocontrolled synthesis of phosphorus-stereogenic centers is challenging and traditionally depends on a resolution or use of stochiometric auxiliaries. Herein, enantioenriched phosphorus centers have been synthesized using chiral nucleophilic catalysis. Racemic H-phosphinate species were coupled with nucleophilic alcohols under halogenating conditions. Chiral phosphonate products were synthesized in acceptable yields (33-95%) and modest enantioselectivity (up to 62% ee) was observed after identification of an appropriate chiral catalyst and optimization of the solvent, base, and temperature. Nucleophilic catalysis has a tremendous potential to produce enantioenriched phosphate mimics that could be used as prodrugs or chemical biology probes.
Collapse
|
16
|
Dutra JK, Foley TL, Huang Z, Fisher EL, Lachapelle EA, Mahapatra S, Ogilvie K, Butler TW, Bellenger J, Devraj Majmudar J, Am Ende CW. Fluorophosphonates on-Demand: A General and Simplified Approach toward Fluorophosphonate Synthesis. Chembiochem 2021; 22:1769-1774. [PMID: 33491295 DOI: 10.1002/cbic.202000852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/23/2021] [Indexed: 11/08/2022]
Abstract
Herein, we report a general and simplified synthesis of fluorophosphonates directly from p-nitrophenylphosphonates. This FP on-demand reaction is mediated by a commercially available polymer-supported fluoride reagent that produces a variety (25 examples) of fluorophosphonates in high yields while only requiring reagent filtration for pure fluorophosphonate isolation. This reaction protocol facilitates the rapid profiling of serine hydrolases with diverse and novel sets of activated phosphonates with differential proteome reactivity. Moreover, slight modification of the procedure into a reaction-to-assay format has enabled additional screening efficiency.
Collapse
Affiliation(s)
- Jason K Dutra
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, CT 06340, USA
| | - Timothy L Foley
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, CT 06340, USA
| | - Zhen Huang
- Pfizer Worldwide Research and Development, 1 Portland St, Cambridge, MA 02139, USA
| | - Ethan L Fisher
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, CT 06340, USA
| | - Erik A Lachapelle
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, CT 06340, USA
| | - Subham Mahapatra
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, CT 06340, USA
| | - Kevin Ogilvie
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, CT 06340, USA
| | - Todd W Butler
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, CT 06340, USA
| | - Justin Bellenger
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, CT 06340, USA
| | | | - Christopher W Am Ende
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, CT 06340, USA
| |
Collapse
|
17
|
Shen J, Li QW, Zhang XY, Wang X, Li GZ, Li WZ, Yang SD, Yang B. Tf2O/DMSO-Promoted P–O and P–S Bond Formation: A Scalable Synthesis of Multifarious Organophosphinates and Thiophosphates. Org Lett 2021; 23:1541-1547. [DOI: 10.1021/acs.orglett.0c04127] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jian Shen
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China
| | - Qi-Wei Li
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China
| | - Xin-Yue Zhang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China
| | - Xue Wang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China
| | - Gui-Zhi Li
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China
| | - Wen-Zuo Li
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China
| | - Shang-Dong Yang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Bin Yang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, P. R. China
| |
Collapse
|
18
|
Ash J, Huang H, Cordero P, Kang JY. Selective hydrolysis of phosphorus(V) compounds to form organophosphorus monoacids. Org Biomol Chem 2021; 19:6007-6014. [PMID: 34165127 DOI: 10.1039/d1ob00881a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An azide and transition metal-free method for the synthesis of elusive phosphonic, phosphinic, and phosphoric monoacids has been developed. Inert pentavalent P(v)-compounds (phosphonate, phosphinate, and phosphate) are activated by triflate anhydride (Tf2O)/pyridine system to form a highly reactive phosphoryl pyridinium intermediate that undergoes nucleophilic substitution with H2O to selectively deprotect one alkoxy group and form organophosphorus monoacids.
Collapse
Affiliation(s)
- Jeffrey Ash
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas, 4505 S. Maryland Parkway, Las Vegas, Nevada 89154-4003, USA.
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Paula Cordero
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas, 4505 S. Maryland Parkway, Las Vegas, Nevada 89154-4003, USA.
| | - Jun Yong Kang
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas, 4505 S. Maryland Parkway, Las Vegas, Nevada 89154-4003, USA.
| |
Collapse
|
19
|
Xu Z, Zhang Z, Meng C, Zhang X, Xu K, Liu L, Wang T, Xu H, Mao G. Ligand-Free Pd-Catalyzed Hydrophosphorylation of Internal Alkynes for the Synthesis of E-Vinylphosphonates. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202103038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
20
|
Winters KR, Montchamp JL. Evaluation and Development of Methodologies for the Synthesis of Thiophosphinic Acids. J Org Chem 2020; 85:14545-14558. [PMID: 32806089 DOI: 10.1021/acs.joc.0c01151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Thiophosphorus acids R1R2P(S)OH constitute an important class of organophosphorus compounds, in which the phosphorus atom is intrinsically chiral if R1 ≠ R2. In connection with a project aimed at the preparation of chiral thiophosphorus acids, various available literature methods were considered, but few fit the requirement of odorless reagents. Herein, the results of our studies on the synthesis of thiophosphinic acids are reported. Ultimately, two major approaches were selected: (1) the Stec reaction of phosphorus amides with carbon disulfide; and (2) the one-pot synthesis of thiophosphorus acids from H-phosphinates, an organometallic nucleophile, and quenching with elemental sulfur. An application to the preparation of a potential chiral phosphorus organocatalyst is also reported.
Collapse
Affiliation(s)
- Karen R Winters
- Department of Chemistry, Texas Christian University, PO Box 298860, Fort Worth, Texas 76129, United States
| | - Jean-Luc Montchamp
- Department of Chemistry, Texas Christian University, PO Box 298860, Fort Worth, Texas 76129, United States
| |
Collapse
|
21
|
Jiao LY, Zhang Z, Hong Q, Ning ZH, Liu S, Sun M, Hao Q, Xu L, Li Z, Ma XX. Recyclable copper catalyst on chitosan for facile preparation of alkyl/aryl mixed phosphates via deaminated esterification between diphenylphosphoryl azides and aliphatic alcohols. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111120] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
22
|
Xu K, Liu L, Li Z, Huang T, Xiang K, Chen T. Controllable Phosphorylation of Thioesters: Selective Synthesis of Aryl and Benzyl Phosphoryl Compounds. J Org Chem 2020; 85:14653-14663. [DOI: 10.1021/acs.joc.0c01557] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Kaiqiang Xu
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chemistry, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Long Liu
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chemistry, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Zhaohui Li
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chemistry, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Tianzeng Huang
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chemistry, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Kang Xiang
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chemistry, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Tieqiao Chen
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chemistry, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| |
Collapse
|
23
|
Faucher F, Bennett JM, Bogyo M, Lovell S. Strategies for Tuning the Selectivity of Chemical Probes that Target Serine Hydrolases. Cell Chem Biol 2020; 27:937-952. [PMID: 32726586 PMCID: PMC7484133 DOI: 10.1016/j.chembiol.2020.07.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 07/06/2020] [Accepted: 07/08/2020] [Indexed: 02/08/2023]
Abstract
Serine hydrolases comprise a large family of enzymes that have diverse roles in key cellular processes, such as lipid metabolism, cell signaling, and regulation of post-translation modifications of proteins. They are also therapeutic targets for multiple human pathologies, including viral infection, diabetes, hypertension, and Alzheimer disease; however, few have well-defined substrates and biological functions. Activity-based probes (ABPs) have been used as effective tools to both profile activity and screen for selective inhibitors of serine hydrolases. One broad-spectrum ABP containing a fluorophosphonate electrophile has been used extensively to advance our understanding of diverse serine hydrolases. Due to the success of this single reagent, several robust chemistries have been developed to further diversify and tune the selectivity of ABPs used to target serine hydrolases. In this review, we highlight approaches to identify selective serine hydrolase ABPs and suggest new synthetic methodologies that could be applied to further advance probe development.
Collapse
Affiliation(s)
- Franco Faucher
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - John M Bennett
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - Matthew Bogyo
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA.
| | - Scott Lovell
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA.
| |
Collapse
|
24
|
Denitrative Cross-Couplings of Nitrostyrenes. Molecules 2020; 25:molecules25153390. [PMID: 32726964 PMCID: PMC7435674 DOI: 10.3390/molecules25153390] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/17/2020] [Accepted: 07/21/2020] [Indexed: 11/17/2022] Open
Abstract
Interestingly, β-nitrostyrenes, typically bench stable compounds, are highly promising cross-coupling partners, due to their excellent availability and well understood reactivity. In this review, we report on the discovery and advancements, in the field of stereoselective, denitrative cross-couplings of β-nitrostyrenes with miscellaneous organic reagents. The rapidly expanding field offers alternative access to a broad range of functionalized alkenes, including β-alkylated styrenes, chalcones, stilbenes, cinnamic acids, and conjugated sulfones and phosphonates. The most important mechanistic pathways are briefly discussed, to familiarize readers with the elementary reactions occurring during the coupling.
Collapse
|
25
|
Tian J, Yuan H, Zhang J. Mechanistic details of metal-free cyclization reaction of organophosphorus oxide with alkynes mediated by 2,6-lutidine and Tf 2 O. J Comput Chem 2020; 41:1709-1717. [PMID: 32323872 DOI: 10.1002/jcc.26212] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 04/04/2020] [Accepted: 04/06/2020] [Indexed: 12/19/2022]
Abstract
Theoretical investigations have elucidated the mechanism of metal-free electrophilic phosphinative cyclization of alkynes reaction reported by Miura and coworkers. Two competitive mechanisms I and II were explored without or with 2,6-lutidine. Both of I and II involve transformation of P(V) to P(III), electrophilic addition, ring opening and cyclization/cyclization, hydrogen-transfer, and oxidation. The rate-determining step of mechanism I and competitive less-step II is electrophilic [2 + 1] cycloaddition and electrophilic addition via single CP bond formation with activation barrier of 13.5 and 10.6 kcal/mol, respectively. Our calculation results suggested that the cumulative effect of the isomer of 2,6-lutidine and Tf2 O as well as TfO- affects the title reaction to some extent, and simultaneously activates key reaction sites and reverses the polarities of them via the formation of abundant noncovalent interactions to decrease activation barriers of TSs. In addition, the effects of two series substituents on reactivity of phosphine oxide were investigated. Therefore, our study will serve as useful guidance for more efficient metal-free synthesis of organophosphorus compounds mediated by pyridine reagents.
Collapse
Affiliation(s)
- Jiamei Tian
- Department of Chemistry, Northeast Normal University, Changchun, China
| | - Haiyan Yuan
- Department of Chemistry, Northeast Normal University, Changchun, China
| | - Jingping Zhang
- Department of Chemistry, Northeast Normal University, Changchun, China
| |
Collapse
|
26
|
Affiliation(s)
- Romain Morodo
- Center for Integrated Technology and Organic Synthesis MolSys Research Unit University of Liège B‐4000 Liège (Sart Tilman) Belgium
| | - Pauline Bianchi
- Center for Integrated Technology and Organic Synthesis MolSys Research Unit University of Liège B‐4000 Liège (Sart Tilman) Belgium
| | - Jean‐Christophe M. Monbaliu
- Center for Integrated Technology and Organic Synthesis MolSys Research Unit University of Liège B‐4000 Liège (Sart Tilman) Belgium
| |
Collapse
|
27
|
Wang M, Yang J, Wang S, Zhong H. Base-promoted selective O-phosphorylation of aryl triflates with P(O)-H compounds. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151971] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
28
|
Ying J, Gao Q, Wu X. Zinc‐catalyzed transformation of diarylphosphoryl azides to diarylphosphate esters and amides. Chem Asian J 2020; 15:1540-1543. [DOI: 10.1002/asia.202000154] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 02/13/2020] [Indexed: 12/19/2022]
Affiliation(s)
- Jun Ying
- Department of ChemistryZhejiang Sci-Tech University Xiasha Campus Hangzhou 310018 People's Republic of China
| | - Qian Gao
- Department of ChemistryZhejiang Sci-Tech University Xiasha Campus Hangzhou 310018 People's Republic of China
| | - Xiao‐Feng Wu
- Department of ChemistryZhejiang Sci-Tech University Xiasha Campus Hangzhou 310018 People's Republic of China
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock Albert-Einstein-Straβe 29a 18059 Rostock Germany
| |
Collapse
|
29
|
Ye W, Li X, Ding B, Wang C, Shrestha M, Ma X, Chen Y, Tian H. Facile Synthesis of Nitrogen-Containing Six-Membered Benzofuzed Phenophosphazinine Oxides and Studies of the Photophysical Properties. J Org Chem 2020; 85:3879-3886. [PMID: 31948228 DOI: 10.1021/acs.joc.9b02847] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A facile synthesis of nitrogen-containing six-membered benzofuzed phosphacycles has been described. This cyclization reaction triggered by Tf2O provides an expedient protocol of phosphacycles with a simple operation at mild conditions. The preliminary photophysical studies of these novel materials reveal that the fluorescence intensity enhances with the molecular aggregation in the solid state and that the introduction of the sterically bulky phenanthrene group into the phosphacycles allows a significant increase in the fluorescence quantum yield.
Collapse
Affiliation(s)
- Wenqiang Ye
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xiaobin Li
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Bingbing Ding
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Chenchen Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Mohini Shrestha
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xiang Ma
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yifeng Chen
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - He Tian
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| |
Collapse
|
30
|
Ou Y, Huang Y, He Z, Yu G, Huo Y, Li X, Gao Y, Chen Q. A phosphoryl radical-initiated Atherton–Todd-type reaction under open air. Chem Commun (Camb) 2020; 56:1357-1360. [DOI: 10.1039/c9cc09407e] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A phosphoryl radical-initiated Atherton–Todd-type reaction enables the phosphorylation of alcohols, phenols, and amines under mild reaction conditions.
Collapse
Affiliation(s)
- Yingcong Ou
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Yuanting Huang
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Zhenlin He
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Guodian Yu
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Yanping Huo
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Xianwei Li
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Yang Gao
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Qian Chen
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
| |
Collapse
|
31
|
Anitha T, Ashalu KC, Sandeep M, Mohd A, Wencel-Delord J, Colobert F, Reddy KR. LiI/TBHP Mediated Oxidative Cross-Coupling of P(O)-H Compounds with Phenols and Various Nucleophiles: Direct Access to the Synthesis of Organophosphates. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901362] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Thippani Anitha
- Catalysis and Fine Chemicals Division; CSIR- Indian Institute of Chemical Technology; 500007 Tarnaka Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 110025 New Delhi India
| | - Kashamalla Chinna Ashalu
- Catalysis and Fine Chemicals Division; CSIR- Indian Institute of Chemical Technology; 500007 Tarnaka Hyderabad India
| | - Mummadi Sandeep
- Catalysis and Fine Chemicals Division; CSIR- Indian Institute of Chemical Technology; 500007 Tarnaka Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 110025 New Delhi India
| | - Aabid Mohd
- Laboratoired′InnovationMoléculaire et Applications (UMR CNRS7042); Université de Strasbourg/Université de haute Alsace, ECPM, 25 Rue Becquerel; 67087 Strasbourg France
| | - Joanna Wencel-Delord
- Laboratoired′InnovationMoléculaire et Applications (UMR CNRS7042); Université de Strasbourg/Université de haute Alsace, ECPM, 25 Rue Becquerel; 67087 Strasbourg France
| | - Francoise Colobert
- Laboratoired′InnovationMoléculaire et Applications (UMR CNRS7042); Université de Strasbourg/Université de haute Alsace, ECPM, 25 Rue Becquerel; 67087 Strasbourg France
| | - Kallu Rajender Reddy
- Catalysis and Fine Chemicals Division; CSIR- Indian Institute of Chemical Technology; 500007 Tarnaka Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 110025 New Delhi India
| |
Collapse
|
32
|
Jiao LY, Zhang Z, Yin XM, Li Z, Ma XX. Copper catalyzed synthesis of aryl/alkyl mixed phosphates from diphenylphosphoryl azides and aliphatic alcohols under mild conditions. J Catal 2019. [DOI: 10.1016/j.jcat.2019.09.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
33
|
de A. Cavalcante SF, Simas ABC, Kuča K. Nerve Agents’ Surrogates: Invaluable Tools for Development of Acetylcholinesterase Reactivators. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666190806114017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The use of nerve agents as warfare and in terrorist acts has drawn much attention from the governments and societies. Such toxic organophosphorus compounds are listed in Chemical Weapons Convention as Schedule 1 chemicals. The discussion about the chemical identity of the elusive Novichok agents, more potent compounds than best known G- and V-Agents, which have been implicated in recent rumorous assassination plots, clearly demonstrating the importance of the matter. Furthermore, accidents with pesticides or misuse thereof have been a pressing issue in many countries. In this context, the continued development of novel cholinesterase reactivators, antidotes for organophosphorus poisoning, a rather restricted class of pharmaceutical substances, is warranted. Testing of novel candidates may require use of actual nerve agents. Nonetheless, only a few laboratories comply with the requirements for storing, possession and manipulation of such toxic chemicals. To overcome such limitations, nerve agents’ surrogates may be a useful alternative, as they undergo the same reaction with cholinesterases, yielding similar adducts, allowing assays with novel antidote candidates, among other applications.
Collapse
Affiliation(s)
- Samir F. de A. Cavalcante
- Walter Mors Institute of Research on Natural Products (IPPN), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Alessandro B. C. Simas
- Walter Mors Institute of Research on Natural Products (IPPN), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Kamil Kuča
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| |
Collapse
|
34
|
Foust BJ, Li J, Hsiao CHC, Wiemer DF, Wiemer AJ. Stability and Efficiency of Mixed Aryl Phosphonate Prodrugs. ChemMedChem 2019; 14:1597-1603. [PMID: 31226236 PMCID: PMC6726502 DOI: 10.1002/cmdc.201900344] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Indexed: 12/16/2022]
Abstract
A set of phosphonate prodrugs of a butyrophilin ligand was synthesized and evaluated for plasma stability and cellular activity. The mixed aryl acyloxy esters were prepared either via a standard sequence through the phosphonic acid chloride, or through the more recently reported, and more facile, triflate activation. In the best of cases, this class of prodrugs shows cellular potency similar to that of bis-acyloxyalkyl phosphonate prodrugs and plasma stability similar to that of aryl phosphonamidates. For example, {[((3E)-5-hydroxy-4-methylpent-3-en-1-yl) (naphthalen-2-yloxy)phosphoryl]oxy}methyl 2,2-dimethylpropanoate can activate BTN3A1 in K562 cells after just 15 minutes of exposure (at an EC50 value of 31 nm) and is only partially metabolized (60 % remaining) after 20 hours in human plasma. Other related novel analogues showed similar potency/stability profiles. Therefore, mixed aryl acyloxyalkyl phosphonate prodrugs are an exciting new strategy for the delivery of phosphonate-containing drugs.
Collapse
Affiliation(s)
- Benjamin J Foust
- Department of Chemistry, University of Iowa, E531 Chemistry Building, Iowa City, IA, 52242, USA
| | - Jin Li
- Department of Pharmaceutical Sciences, University of Connecticut, 69 North Eagleville Road, Unit 3092, Storrs, CT, 06269, USA
| | - Chia-Hung Christine Hsiao
- Department of Pharmaceutical Sciences, University of Connecticut, 69 North Eagleville Road, Unit 3092, Storrs, CT, 06269, USA
| | - David F Wiemer
- Department of Chemistry, University of Iowa, E531 Chemistry Building, Iowa City, IA, 52242, USA
| | - Andrew J Wiemer
- Department of Pharmaceutical Sciences, University of Connecticut, 69 North Eagleville Road, Unit 3092, Storrs, CT, 06269, USA
| |
Collapse
|
35
|
He Y, Huang L, Xie L, Liu P, Wei Q, Mao F, Zhang X, Huang J, Chen S, Huang C. Palladium-Catalyzed C-H Bond Functionalization Reactions Using Phosphate/Sulfonate Hypervalent Iodine Reagents. J Org Chem 2019; 84:10088-10101. [PMID: 31329431 DOI: 10.1021/acs.joc.9b01278] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A new and operationally simple approach for palladium-catalyzed C-H functionalization reactions utilizing an organophosphorus/sulfonate hypervalent iodine reagent as both an oxidant and the source of a functional group has been developed. Through this method, the oxidative phosphorylation-, sulfonation-, and hydroxylation of unactivated benzyl C(sp3)-H bonds, along with the hydroxylation and arylation of aryl C(sp2)-H bonds, are successfully realized under mild conditions and with excellent site-selectivity. The versatile C-OSO2R bond provides a platform for a wide array of subsequent diversification reactions.
Collapse
Affiliation(s)
| | | | | | - Peng Liu
- Guangzhou Institutes of Biomedicine and Health , Chinese Academy of Sciences , 190 Kaiyuan Avenue , Guangzhou 510530 , P. R. China
| | | | | | | | | | | | | |
Collapse
|
36
|
Wang Y, Liu BY, Yang G, Chai Z. Synthesis of 2-Aminophosphates via S N2-Type Ring Openings of Aziridines with Organophosphoric Acids. Org Lett 2019; 21:4475-4479. [PMID: 31184161 DOI: 10.1021/acs.orglett.9b01302] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of 2-aminophosphates is achieved by a SN2-type ring opening reaction of various N-protected or free aziridines with phosphoric acids in a regiospecific and/or enantiospecific way. A one-pot, two-step procedure is also developed enabling direct access to 2-aminophosphates from olefins without isolation of the aziridine intermediates.
Collapse
Affiliation(s)
- Yang Wang
- MOE Key Laboratory of Functionalized Molecular Solids, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science , Anhui Normal University , Wuhu , Anhui 241002 , China
| | - Bing-Yi Liu
- MOE Key Laboratory of Functionalized Molecular Solids, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science , Anhui Normal University , Wuhu , Anhui 241002 , China
| | - Gaosheng Yang
- MOE Key Laboratory of Functionalized Molecular Solids, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science , Anhui Normal University , Wuhu , Anhui 241002 , China
| | - Zhuo Chai
- MOE Key Laboratory of Functionalized Molecular Solids, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science , Anhui Normal University , Wuhu , Anhui 241002 , China
| |
Collapse
|
37
|
Qin Q, Luo X, Wei J, Zhu Y, Wen X, Song S, Jiao N. Acetonitrile Activation: An Effective Two‐Carbon Unit for Cyclization. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900947] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Qixue Qin
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Xiao Luo
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Jialiang Wei
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Yuchao Zhu
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Xiaojin Wen
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Song Song
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesEast China Normal University Shanghai 200062 China
| |
Collapse
|
38
|
Qin Q, Luo X, Wei J, Zhu Y, Wen X, Song S, Jiao N. Acetonitrile Activation: An Effective Two-Carbon Unit for Cyclization. Angew Chem Int Ed Engl 2019; 58:4376-4380. [PMID: 30715785 DOI: 10.1002/anie.201900947] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Indexed: 11/08/2022]
Abstract
A novel activation of acetonitrile for the construction of cyclobutenones by [2+2] cyclization was developed. Acetonitrile is utilized for the first time as two-carbon (C2) cyclization building block. The present protocol successfully inhibits the competitive cycloaddition with the C≡N bond of acetonitrile, but enables the in situ formation of an unsaturated carbon-carbon bond and the subsequent cycloaddition as a C2 unit. This chemistry features simple reaction conditions, high chemoselectivities, wide substrate scope, and offers a new and practical approach to cyclobutenones and cyclobuteneimines.
Collapse
Affiliation(s)
- Qixue Qin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Xiao Luo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Jialiang Wei
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Yuchao Zhu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Xiaojin Wen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Song Song
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China.,Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai, 200062, China
| |
Collapse
|
39
|
Nishimura K, Hirano K, Miura M. Synthesis of Dibenzophospholes by Tf2O-Mediated Intramolecular Phospha-Friedel–Crafts-Type Reaction. Org Lett 2019; 21:1467-1470. [DOI: 10.1021/acs.orglett.9b00219] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kazutoshi Nishimura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Koji Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Miura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| |
Collapse
|
40
|
Li Y, Yang Q, Yang L, Lei N, Zheng K. A scalable electrochemical dehydrogenative cross-coupling of P(O)H compounds with RSH/ROH. Chem Commun (Camb) 2019; 55:4981-4984. [PMID: 30968096 DOI: 10.1039/c9cc01378d] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A practical, scalable electrochemical dehydrogenative cross-coupling of P(O)H compounds with thiols, phenols and alcohols in both an undivided cell and a continuous-flow setup is disclosed. Its broad substrate scope (>50 examples), good functional-group tolerance and scalability (>10 g) show potential for practical synthesis. A preliminary mechanistic study suggests that the phosphorus radicals are involved in the catalytic cycle.
Collapse
Affiliation(s)
- Yujun Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | | | | | | | | |
Collapse
|
41
|
Adler P, Pons A, Li J, Heider J, Brutiu BR, Maulide N. Chemoselective Activation of Diethyl Phosphonates: Modular Synthesis of Biologically Relevant Phosphonylated Scaffolds. Angew Chem Int Ed Engl 2018; 57:13330-13334. [PMID: 30067301 PMCID: PMC6175129 DOI: 10.1002/anie.201806343] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 07/14/2018] [Indexed: 01/13/2023]
Abstract
Phosphonates have garnered considerable attention for years owing to both their singular biological properties and their synthetic potential. State-of-the-art methods for the preparation of mixed phosphonates, phosphonamidates, phosphonothioates, and phosphinates rely on harsh and poorly selective reaction conditions. We report herein a mild method for the modular preparation of phosphonylated derivatives, several of which exhibit interesting biological activities, that is based on chemoselective activation with triflic anhydride. This procedure enables flexible and even iterative substitution with a broad range of O, S, N, and C nucleophiles.
Collapse
Affiliation(s)
- Pauline Adler
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Amandine Pons
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Jing Li
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Jörg Heider
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Bogdan R Brutiu
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| |
Collapse
|
42
|
Adler P, Pons A, Li J, Heider J, Brutiu BR, Maulide N. Chemoselektive Aktivierung von Diethylphosphonaten: modulare Synthese von biologisch relevanten phosphonylierten Grundgerüsten. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Pauline Adler
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Amandine Pons
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Jing Li
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Jörg Heider
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Bogdan R. Brutiu
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Nuno Maulide
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| |
Collapse
|
43
|
Nishimura K, Unoh Y, Hirano K, Miura M. Phosphenium-Cation-Mediated Formal Cycloaddition Approach to Benzophospholes. Chemistry 2018; 24:13089-13092. [DOI: 10.1002/chem.201803225] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 07/19/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Kazutoshi Nishimura
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Yuto Unoh
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Koji Hirano
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Masahiro Miura
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| |
Collapse
|
44
|
Huang H, Ash J, Kang JY. Tf2O-Promoted Activating Strategy of Phosphate Analogues: Synthesis of Mixed Phosphates and Phosphinate. Org Lett 2018; 20:4938-4941. [DOI: 10.1021/acs.orglett.8b02073] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hai Huang
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas, 4505 South Maryland Parkway, Las Vegas, Nevada 89154-4003, United States
- Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Nanjing Tech University, No. 30 Puzhu Road (S), Nanjing 211816, People’s Republic of China
| | - Jeffrey Ash
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas, 4505 South Maryland Parkway, Las Vegas, Nevada 89154-4003, United States
| | - Jun Yong Kang
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas, 4505 South Maryland Parkway, Las Vegas, Nevada 89154-4003, United States
| |
Collapse
|