1
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Mansouri R, Bouzina A, Sekiou O, Aouf Z, Zerrouki R, Ibrahim-Ouali M, Aouf NE. Novel pseudonucleosides and sulfamoyl-oxazolidinone β- D-glucosamine derivative as anti-COVID-19: design, synthesis, and in silico study. J Biomol Struct Dyn 2023; 41:10999-11016. [PMID: 37098814 DOI: 10.1080/07391102.2023.2203246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 12/10/2022] [Indexed: 04/27/2023]
Abstract
New pseudonucleosides containing cyclic sulfamide moiety and sulfamoyl β-D-glucosamine derivative are described. These pseudonucleosides are synthesized in good yields starting from chlorosulfonyl isocyanate and β-D-glucosamine hydrochloride in five steps; (protection, acetylation, removal of the Boc group, sulfamoylation, and cyclization). Further, novel glycosylated sulfamoyloxazolidin-2-one is prepared in three steps; carbamoylation, sulfamoylation, and intramolecular cyclization. The structures of the synthesized compounds were confirmed by usual spectroscopic and spectrometric methods NMR, IR, MS, and EA. Interesting molecular docking of the prepared pseudonucleosides and (Beclabuvir, Remdesivir) drugs with SARS-CoV-2/Mpro (PDB:5R80) was conducted using the same parameters for a fair comparison. A low binding affinity of the synthesized compounds compared to the Beclabuvir and other analysis showed that pseudonucleosides have the ability to inhibit SARS-CoV-2. After the motivating results of molecular docking study, the complex between the SARS-CoV-2 Mpro and compound 7 was subjected to 100 ns molecular dynamics (MD) simulation using Desmond module of Schrodinger suite, during which the receptor-ligand complex showed substantial stability after 10 ns of MD simulation. Also, we studied the prediction of absorption, distribution, properties of metabolism, excretion, and toxicity (ADMET) of the synthesized compounds.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Rachida Mansouri
- Laboratory of Applied Organic Chemistry, Bioorganic Chemistry Group, Sciences Faculty, Chemistry Department, Badji Mokhtar-Annaba University, Annaba, Algeria
- Environment, modeling, and climate change department, Environmental Research Center (CRE), Box 12, 23000 Annaba, Algeria
| | - Abdeslem Bouzina
- Laboratory of Applied Organic Chemistry, Bioorganic Chemistry Group, Sciences Faculty, Chemistry Department, Badji Mokhtar-Annaba University, Annaba, Algeria
| | - Omar Sekiou
- Environment, modeling, and climate change department, Environmental Research Center (CRE), Box 12, 23000 Annaba, Algeria
| | - Zineb Aouf
- Laboratory of Applied Organic Chemistry, Bioorganic Chemistry Group, Sciences Faculty, Chemistry Department, Badji Mokhtar-Annaba University, Annaba, Algeria
| | - Rachida Zerrouki
- Laboratoire PEIRENE, EA7500 Université de Limoges, 123 avenue Albert Thomas, 87000, Limoges cedex, France
| | | | - Nour Eddine Aouf
- Laboratory of Applied Organic Chemistry, Bioorganic Chemistry Group, Sciences Faculty, Chemistry Department, Badji Mokhtar-Annaba University, Annaba, Algeria
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2
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Kukhtin-Ramirez-Reaction-Inspired Deprotection of Sulfamidates for the Synthesis of Amino Sugars. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010182. [PMID: 36615376 PMCID: PMC9822045 DOI: 10.3390/molecules28010182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/14/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022]
Abstract
Herein, we present a mild strategy for deprotecting cyclic sulfamidates via the Kukhtin-Ramirez reaction to access amino sugars. The method features the removal of the sulfonic group of cyclic sulfamidates, which occurs through an N-H insertion reaction that implicates the Kukhtin-Ramirez adducts, followed by a base-promoted reductive N-S bond cleavage. The mild reaction conditions of the protocol enable the formation of amino alcohols including analogs that bear multiple functional groups.
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3
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Ravindar L, Hasbullah SA, Hassan NI, Qin HL. Cross‐Coupling of C‐H and N‐H Bonds: a Hydrogen Evolution Strategy for the Construction of C‐N Bonds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lekkala Ravindar
- Universiti Kebangsaan Malaysia Fakulti Teknologi dan Sains Maklumat Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Siti Aishah Hasbullah
- Universiti Kebangsaan Malaysia Fakulti Sains dan Teknologi Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Nurul Izzaty Hassan
- Universiti Kebangsaan Malaysia Fakulti Sains dan Teknologi Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Hua-Li Qin
- Wuhan University of Technology School of Chemistry 430070 Hubei CHINA
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4
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Gorelik DJ, Turner JA, Taylor MS. Catalyst-Controlled, Site-Selective Sulfamoylation of Carbohydrate Derivatives. Org Lett 2022; 24:5249-5253. [PMID: 35729742 DOI: 10.1021/acs.orglett.2c01590] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Methods for site-selective sulfamoylation of secondary hydroxyl groups in pyranosides are described. Using a boronic acid catalyst, selective installation of a Boc-protected sulfamoyl group at the equatorial position of cis-diols in manno- and galacto-configured substrates has been achieved. Activation of trans-diol groups in gluco- and galacto-configured substrates is also possible by employing an organotin catalyst.
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Affiliation(s)
- Daniel J Gorelik
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Julia A Turner
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Mark S Taylor
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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5
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Total synthesis of α-1-C-propyl-3,6-di-epi-nojirimycin and polyhydroxyindolizidine alkaloids via regio- and diastereoselective amination of anomeric acetals. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Dowgiallo MG, Miller BC, Kassu M, Smith KP, Fetigan AD, Guo JJ, Kirby JE, Manetsch R. The convergent total synthesis and antibacterial profile of the natural product streptothricin F. Chem Sci 2022; 13:3447-3453. [PMID: 35432870 PMCID: PMC8943883 DOI: 10.1039/d1sc06445b] [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: 11/18/2021] [Accepted: 02/16/2022] [Indexed: 11/21/2022] Open
Abstract
A convergent, diversity-enabling total synthesis of the natural product streptothricin F has been achieved. Herein, we describe the potent antimicrobial activity of streptothricin F and highlight the importance of a total synthesis that allows for the installation of practical divergent steps for medicinal chemistry exploits. Key features of our synthesis include a Burgess reagent-mediated 1,2-anti-diamine installation, diastereoselective azidation of a lactam enolate, and a mercury(ii) chloride-mediated desulfurization-guanidination. The development of this chemistry enables the synthesis and structure–activity studies of streptothricin F analogs. The second ever total synthesis of streptothricin F and the first achieved through a diversity-enabling convergent route. The synthesis is achieved in 35 total steps, with a longest linear sequence of 19 steps, and 0.40% overall yield.![]()
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Affiliation(s)
- Matthew G Dowgiallo
- Department of Chemistry and Chemical Biology, Northeastern University Boston MA USA
| | - Brandon C Miller
- Department of Chemistry and Chemical Biology, Northeastern University Boston MA USA
| | - Mintesinot Kassu
- Department of Chemistry and Chemical Biology, Northeastern University Boston MA USA
| | - Kenneth P Smith
- Department of Pathology, Beth Israel Deaconess Medical Center Boston MA USA.,Harvard Medical School Boston MA USA
| | - Andrew D Fetigan
- Department of Chemistry and Chemical Biology, Northeastern University Boston MA USA
| | - Jason J Guo
- Department of Chemistry and Chemical Biology, Northeastern University Boston MA USA .,Center for Drug Discovery, Northeastern University Boston MA USA.,Barnett Institute for Chemical and Biological Analysis, Northeastern University Boston MA USA
| | - James E Kirby
- Department of Pathology, Beth Israel Deaconess Medical Center Boston MA USA.,Harvard Medical School Boston MA USA
| | - Roman Manetsch
- Department of Chemistry and Chemical Biology, Northeastern University Boston MA USA .,Department of Pharmaceutical Sciences, Northeastern University Boston MA USA.,Center for Drug Discovery, Northeastern University Boston MA USA
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7
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Kiyokawa K, Jou K, Minakata S. Intramolecular C-H Amination of N-Alkylsulfamides by tert-Butyl Hypoiodite or N-Iodosuccinimide. Chemistry 2021; 27:13971-13976. [PMID: 34403187 DOI: 10.1002/chem.202102635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Indexed: 01/15/2023]
Abstract
1,3-Diamines are an important class of compounds that are broadly found in natural products and are also widely used as building blocks in organic synthesis. Although the intramolecular C-H amination of N-alkylsulfamide derivatives is a reliable method for the construction of 1,3-diamine structures, the majority of these methods involve the use of a transition-metal catalyst. We herein report on a new transition-metal-free method using tert-butyl hypoiodite (t-BuOI) or N-iodosuccinimide (NIS), enabling secondary non-benzylic and tertiary C-H amination reactions to proceed. The cyclic sulfamide products can be easily transformed into 1,3-diamines. Mechanistic investigations revealed that amination reactions using t-BuOI or NIS each proceed via different pathways.
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Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Keisuke Jou
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
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8
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Ondari ME, Klosin J, Kruper WR, Lysenko I, Thomas PJ, Cheng K, Abboud KA, Kruper WJ. Diol-Ritter Reaction: Regio- and Stereoselective Synthesis of Protected Vicinal Aminoalcohols and Mechanistic Aspects of Diol Monoester Disproportionation. J Org Chem 2021; 87:2063-2074. [PMID: 34581583 DOI: 10.1021/acs.joc.1c01475] [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 well-known epoxide-Ritter reaction generally affords oxazolines with poor to average regioselectivity. Herein, a mechanism-based study of the less known diol-Ritter reaction has provided a highly regioselective procedure for the synthesis of 1-vic-amido-2-esters from either terminal epoxides or 1,2-diols via Lewis acid-catalyzed monoesterification. When treated with a stoichiometric Lewis acid catalyst (BF3), these diol monoesters form dioxonium cation intermediates that are ring-opened with nitrile nucleophiles to form nitrilium intermediates, which undergo rapid and irreversible hydration to give the desired amidoesters. Diester byproduct formation is irreversible and appears to occur through disproportionation of diol monoester. With chiral epoxide starting materials, the formation of amidoester occurs with retention of configuration and no apparent erosion of optical purity as determined by single-crystal X-ray analyses and chiral chromatography, respectively. The direct access to chiral vic-amidoesters is especially practical with regard to the synthesis of antibacterial oxazolidinone analogues of the Zyvox antimicrobial family.
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Affiliation(s)
- Mark E Ondari
- Corteva Agriscience, 1710 Building, Midland, Michigan 48674, United States
| | - Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - William R Kruper
- Corteva Agriscience, 1710 Building, Midland, Michigan 48674, United States
| | - Ivan Lysenko
- Michigan State University, St Andrews, Midland, Michigan 48674, United States
| | | | - Kevin Cheng
- Michigan State University, St Andrews, Midland, Michigan 48674, United States
| | - Khalil A Abboud
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - William J Kruper
- Michigan State University, St Andrews, Midland, Michigan 48674, United States
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9
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Cao YX, Silalai P, Liu CF, Yu KY, Bao X, Zhao XH, Saeeng R, Fan CA. Hypervalent-Iodine(III)-Mediated Tandem Oxidative Dearomatization/Aziridination of Phenolic Amines: Synthesis of Functionalized Unactivated Aziridines. Chemistry 2021; 27:8473-8478. [PMID: 33844345 DOI: 10.1002/chem.202100762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Indexed: 11/11/2022]
Abstract
A new hypervalent-iodine(III)-mediated tandem reaction involving oxidative dearomatization and in situ aziridination of phenolic amines is described, providing a mild and effective method for the assembly of structurally interesting and synthetically useful aziridines. Importantly, the densely functionalized aziridines resulting from this unprecedented tandem reaction offer a platform for expeditious access to architecturally diverse aza-heterocycles through transformations initiated by selective ring-opening of aziridines.
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Affiliation(s)
- Ye-Xing Cao
- State Key Laboratory of Applied OrganicChemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou, 730000, P. R. China
| | - Patamawadee Silalai
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi, 20131, Thailand
| | - Chun-Fang Liu
- State Key Laboratory of Applied OrganicChemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou, 730000, P. R. China
| | - Ke-Yin Yu
- State Key Laboratory of Applied OrganicChemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou, 730000, P. R. China
| | - Xu Bao
- State Key Laboratory of Applied OrganicChemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou, 730000, P. R. China
| | - Xian-He Zhao
- State Key Laboratory of Applied OrganicChemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou, 730000, P. R. China
| | - Rungnapha Saeeng
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi, 20131, Thailand
| | - Chun-An Fan
- State Key Laboratory of Applied OrganicChemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Nanlu, Lanzhou, 730000, P. R. China
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10
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Bhela IP, Serafini M, Del Grosso E, Tron GC, Pirali T. Tritylamine as an Ammonia Surrogate in the Ugi Reaction Provides Access to Unprecedented 5-Sulfamido Oxazoles Using Burgess-type Reagents. Org Lett 2021; 23:3610-3614. [PMID: 33913716 PMCID: PMC8289289 DOI: 10.1021/acs.orglett.1c01002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Starting from a wide
range of α-acylamino amide substructures
synthesized using tritylamine as an ammonia surrogate in the Ugi reaction,
Burgess-type reagents enable cyclodehydration and afford unprecedented
oxazole scaffolds with four points of diversity, including a sulfamide
moiety in the 5-position. The synthetic procedure employs readily
available starting materials and proceeds smoothly under mild reaction
conditions with good tolerance for a variety of functional groups,
coming to fill a gap in the field of oxazole compounds.
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Affiliation(s)
- Irene Preet Bhela
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, Novara 28100, Italy
| | - Marta Serafini
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, Novara 28100, Italy
| | - Erika Del Grosso
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, Novara 28100, Italy
| | - Gian Cesare Tron
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, Novara 28100, Italy
| | - Tracey Pirali
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Largo Donegani 2, Novara 28100, Italy.,ChemICare S.r.l., Enne3, Corso Trieste 15/A, Novara 28100, Italy
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11
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Jun JJ, Xie X. Implementation of Diverse Synthetic and Strategic Approaches to Biologically Active Sulfamides. ChemistrySelect 2021. [DOI: 10.1002/slct.202004765] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jaden J. Jun
- Department of Pharmaceutical Sciences and Computational Chemical Genomics Screening Center School of Pharmacy 335 Sutherland Drive 206 Salk Pavilion University of Pittsburgh Pittsburgh PA15261 USA
- NIH National Center of Excellence for Computational Drug Abuse Research
- Drug Discovery Institute
| | - Xiang‐Qun Xie
- Department of Pharmaceutical Sciences and Computational Chemical Genomics Screening Center School of Pharmacy 335 Sutherland Drive 206 Salk Pavilion University of Pittsburgh Pittsburgh PA15261 USA
- NIH National Center of Excellence for Computational Drug Abuse Research
- Drug Discovery Institute
- Departments of Computational Biology and Structural Biology Director of CCGS and NIDA CDAR Centers School of Medicine University of Pittsburgh Pittsburgh Pennsylvania 15261 United States
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12
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Simons RT, Scott GE, Kanegusuku AG, Roizen JL. Photochemically Mediated Nickel-Catalyzed Synthesis of N-(Hetero)aryl Sulfamides. J Org Chem 2020; 85:6380-6391. [PMID: 32312047 PMCID: PMC7241444 DOI: 10.1021/acs.joc.0c00139] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A general method for the N-arylation of sulfamides with aryl bromides is described. The protocol leverages a dual-catalytic system, with [Ir(ppy)2(dtbbpy)]PF6 as a photosensitizer, NiBr2·glyme as a precatalyst, and 1,8-diazabicyclo(5.4.0)undec-7-ene (DBU) as a base, and proceeds at room temperature under visible light irradiation. Using these tactics, aryl boronic esters and aryl chlorides can be carried through the reaction untouched. The developed reactions efficiently engage simple bromoarenes and primary sulfamides in between 66% and quantitative yields. For more challenging substrates, such as secondary sulfamides, the reaction efficiency is documented. Thereby, these methods complement the known Buchwald-Hartwig coupling methods for N-arylation of sulfamides.
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Affiliation(s)
- R Thomas Simons
- Department of Chemistry, Duke University, Box 90346, Durham, North Carolina 27708-0354, United States
| | - Georgia E Scott
- Department of Chemistry, Duke University, Box 90346, Durham, North Carolina 27708-0354, United States
| | - Anastasia Gant Kanegusuku
- Department of Chemistry, Duke University, Box 90346, Durham, North Carolina 27708-0354, United States
| | - Jennifer L Roizen
- Department of Chemistry, Duke University, Box 90346, Durham, North Carolina 27708-0354, United States
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13
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Rapp PB, Murai K, Ichiishi N, Leahy DK, Miller SJ. Catalytic Sulfamoylation of Alcohols with Activated Aryl Sulfamates. Org Lett 2020; 22:168-174. [PMID: 31833780 DOI: 10.1021/acs.orglett.9b04119] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report a new catalytic method for alcohol sulfamoylation that deploys electron-deficient aryl sulfamates as activated group transfer reagents. The reaction utilizes the simple organic base N-methylimidazole, proceeds under mild conditions, and provides intrinsic selectivity for 1° over 2° alcohols (up to >40:1 for certain nucleosides). The requisite aryl sulfamate donors are stable crystalline solids that can be readily prepared on a large scale. Mechanistic considerations support the intermediacy of HNSO2 "aza-sulfene" in the transfer reaction.
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Affiliation(s)
- Peter B Rapp
- Department of Chemistry , Yale University , P.O. Box 208107, New Haven , Connecticut 06520-8107 , United States
| | - Koichi Murai
- Process Chemistry Development , Takeda Pharmaceuticals International Co. , Cambridge , Massachusetts 02139 , United States
| | - Naoko Ichiishi
- Process Chemistry Development , Takeda Pharmaceuticals International Co. , Cambridge , Massachusetts 02139 , United States
| | - David K Leahy
- Process Chemistry Development , Takeda Pharmaceuticals International Co. , Cambridge , Massachusetts 02139 , United States
| | - Scott J Miller
- Department of Chemistry , Yale University , P.O. Box 208107, New Haven , Connecticut 06520-8107 , United States
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14
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Hjerrild P, Tørring T, Poulsen TB. Dehydration reactions in polyfunctional natural products. Nat Prod Rep 2020; 37:1043-1064. [DOI: 10.1039/d0np00009d] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Here, we review methods for chemical dehydration of alcohols to alkenes and discuss the potential of late-stage functionalization by direct, site- and chemo-selective dehydration of complex molecular substrates.
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Affiliation(s)
- Per Hjerrild
- Department of Chemistry
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| | - Thomas Tørring
- Department of Engineering – Microbial Biosynthesis
- Aarhus University
- Aarhus C
- Denmark
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15
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Abstract
2,3,5-Tri-O-benzyl- and 2,3,5-tri-O-methyl-d-ribono-γ-lactone were converted with (methoxyethoxymethoxy)methyl and benzyloxy tributylstannane into the corresponding protected d-psicoses as mixtures of anomers in 31%–72% yield. Treatment of 2,3,5-tri-O-methyl-l-ribono-γ-lactone with benzyloxy tributylstannane afforded the corresponding l-psicose derivative as an anomeric mixture in 72% yield. Both methylated psicoses were further converted into 1,2-O-isopropylidene-3,4,6-tri-O-methyl-d- and l-psicofuranosides, the respective α- and β-anomers of which could be separated and characterized.
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16
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Cu(II)-Catalyzed C-N Coupling of (Hetero)aryl Halides and N-Nucleophiles Promoted by α-Benzoin Oxime. Molecules 2019; 24:molecules24224177. [PMID: 31752140 PMCID: PMC6891672 DOI: 10.3390/molecules24224177] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/10/2019] [Accepted: 11/16/2019] [Indexed: 11/21/2022] Open
Abstract
We first reported the new application of a translate metal chelating ligand α-benzoin oxime for improving Cu-catalyzed C-N coupling reactions. The system could catalyse coupling reactions of (hetero)aryl halides with a wide of nucleophiles (e.g., azoles, piperidine, pyrrolidine and amino acids) in moderate to excellent yields. The protocol allows rapid access to the most common scaffolds found in FDA-approved pharmaceuticals.
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17
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Widlicka DW, Gontcharov A, Mehta R, Pedro DJ, North R. Enantiospecific Synthesis of (3R,4R)-1-Benzyl-4-fluoropyrrolidin-3-amine Utilizing a Burgess-Type Transformation. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00245] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel W. Widlicka
- Chemical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Alexander Gontcharov
- Chemical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Ruchi Mehta
- Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Dylan J. Pedro
- Chemical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Robert North
- Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Eastern Point Road, Groton, Connecticut 06340, United States
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18
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Kiyokawa K, Nakamura S, Jou K, Iwaida K, Minakata S. Transition-metal-free Intramolecular C–H amination of sulfamate esters and N-alkylsulfamides. Chem Commun (Camb) 2019; 55:11782-11785. [DOI: 10.1039/c9cc06410a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The transition-metal-free intramolecular C–H amination of sulfamate esters and N-alkylsulfamides using iodine oxidants, tert-butyl hypoiodite (t-BuOI) and N-iodosuccinimide (NIS) is reported.
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Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| | - Shogo Nakamura
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| | - Keisuke Jou
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| | - Kohji Iwaida
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
| | - Satoshi Minakata
- Department of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Osaka 565-0871
- Japan
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19
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20
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Lu H, Lang K, Jiang H, Wojtas L, Zhang XP. Intramolecular 1,5-C(sp 3)-H Radical Amination via Co(II)-Based Metalloradical Catalysis for Five-Membered Cyclic Sulfamides. Chem Sci 2016; 7:6934-6939. [PMID: 28138382 PMCID: PMC5271564 DOI: 10.1039/c6sc02231f] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Synthesis of strained five-membered cyclic sulfamides has been achieved for the first time by intramolecular 1,5-C(sp3)–H amination via Co(ii)-based metalloradical catalysis.
Co(ii)-based metalloradical catalysis (MRC) proves effective for intramolecular 1,5-C–H amination of sulfamoyl azides under neutral and nonoxidative conditions, providing a straightforward approach to access strained 5-membered cyclic sulfamides with nitrogen gas as the only byproduct. The metalloradical amination system is applicable to different types of C(sp3)–H bonds and has a high degree of functional group tolerance. Additional features of the Co(ii)-catalyzed 1,5-C–H amination include excellent chemoselectivity toward allylic and propargylic C–H bonds. The unique reactivity and selectivity profile of the Co(ii)-catalyzed 1,5-C–H amination is attributed to the underlying radical mechanism of MRC.
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Affiliation(s)
- Hongjian Lu
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA.; The Institute of Chemistry & Biomedical Sciences, Nanjing University, Nanjing, 210093, P. R. China
| | - Kai Lang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA; Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Huiling Jiang
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - X Peter Zhang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA; Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
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21
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Young JM, Lee AG, Chandrasekaran RY, Tucker JW. The Synthesis of Alkyl and (Hetero)aryl Sulfonamides From Sulfamoyl Inner Salts. J Org Chem 2015; 80:8417-23. [DOI: 10.1021/acs.joc.5b01287] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Joseph M. Young
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Aisha G. Lee
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Ramalakshmi Y. Chandrasekaran
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Joseph W. Tucker
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
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22
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Majee D, Biswas S, Mobin SM, Samanta S. An expedient one-pot sequential three-component reaction for the stereoselective synthesis of functionalized spiro-sulfamidate imine fused δ-lactone scaffold. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.06.088] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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23
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Maki T, Tsuritani T, Yasukata T. A mild method for the synthesis of carbamate-protected guanidines using the Burgess reagent. Org Lett 2014; 16:1868-71. [PMID: 24628041 DOI: 10.1021/ol5002208] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple method for the synthesis of carbamate-protected guanidines from primary amines is described. A variety of thioureas derived from primary amines and isothiocyanates react with the Burgess reagent to give the corresponding guanidines via either a stepwise or one-pot procedure. By tuning the carbamoyl units of isothiocyanates and the Burgess reagent, differentially N,N'-diprotected guanidines can be obtained. Selective deprotection of the products affords N-monoprotected guanidines.
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Affiliation(s)
- Toshikatsu Maki
- Chemical Development Center, CMC Development Laboratories, Shionogi & Co., Ltd., 3-1-1, Futaba-cho, Toyonaka-shi, Osaka 561-0825, Japan
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24
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Sajitha TS, Prathapan S, Unnikrishnan PA. Novel Burgess reagent mediated C-to-N aryl migration reaction in nitrones. RSC Adv 2014. [DOI: 10.1039/c4ra06835a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nitrones undergo useful transformations with Burgess reagent, ostensibly involving a [3 + 2] annulation across a σ-bond followed by rearrangement involving C-to-N aryl migration.
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Affiliation(s)
- T. S. Sajitha
- Department of Applied Chemistry
- Cochin University of Science and Technology
- Cochin 682 022, India
| | - S. Prathapan
- Department of Applied Chemistry
- Cochin University of Science and Technology
- Cochin 682 022, India
| | - P. A. Unnikrishnan
- Department of Applied Chemistry
- Cochin University of Science and Technology
- Cochin 682 022, India
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25
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Spillane W, Malaubier JB. Sulfamic Acid and Its N- and O-Substituted Derivatives. Chem Rev 2013; 114:2507-86. [DOI: 10.1021/cr400230c] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- William Spillane
- School
of Chemistry, National University of Ireland, Galway, University Road, Galway, Ireland
| | - Jean-Baptiste Malaubier
- Manufacturing Science
and
Technology, Roche Ireland Limited, Clarecastle, Co. Clare, Ireland
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26
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Mata L, Avenoza A, Busto JH, Peregrina JM. Chemoselectivity Control in the Reactions of 1,2-Cyclic Sulfamidates with Amines. Chemistry 2013; 19:6831-9. [DOI: 10.1002/chem.201204392] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 02/19/2013] [Indexed: 11/10/2022]
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27
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Wang H, Jiang T, Xu MH. Simple Branched Sulfur–Olefins as Chiral Ligands for Rh-Catalyzed Asymmetric Arylation of Cyclic Ketimines: Highly Enantioselective Construction of Tetrasubstituted Carbon Stereocenters. J Am Chem Soc 2013; 135:971-4. [DOI: 10.1021/ja3110818] [Citation(s) in RCA: 208] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Hui Wang
- Shanghai
Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai
201203, China
| | - Tao Jiang
- Shanghai
Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai
201203, China
| | - Ming-Hua Xu
- Shanghai
Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai
201203, China
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28
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Majee D, Srivastava A, Mobin SM, Samanta S. l-Proline catalyzed highly efficient synthesis of Z-5-alkylidene cyclic sulfamidate imines: an easy access to 5-alkyl-substituted cyclic sulfamidate imines. RSC Adv 2013. [DOI: 10.1039/c3ra40299a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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29
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Mata L, Avenoza A, Busto JH, Corzana F, Peregrina JM. Quaternary Chiral β2,2-Amino Acids with Pyridinium and Imidazolium Substituents. Chemistry 2012; 18:15822-30. [DOI: 10.1002/chem.201202096] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Indexed: 11/07/2022]
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30
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Werner L, Wernerova M, Machara A, Endoma-Arias MA, Duchek J, Adams DR, Cox DP, Hudlicky T. UnexpectedN-Demethylation of Oxymorphone and OxycodoneN-Oxides Mediated by the Burgess Reagent: Direct Synthesis of Naltrexone, Naloxone, and Other Antagonists from Oxymorphone. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200676] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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(N,N-Diisopropylcarbamoyloxy)-methyl p-tolyl sulfone: preparation and application for the syntheses of 1,2-diols. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.08.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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32
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Nicolaou KC, Hale CRH, Nilewski C, Ioannidou HA. Constructing molecular complexity and diversity: total synthesis of natural products of biological and medicinal importance. Chem Soc Rev 2012; 41:5185-238. [PMID: 22743704 PMCID: PMC3426871 DOI: 10.1039/c2cs35116a] [Citation(s) in RCA: 159] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The advent of organic synthesis and the understanding of the molecule as they occurred in the nineteenth century and were refined in the twentieth century constitute two of the most profound scientific developments of all time. These discoveries set in motion a revolution that shaped the landscape of the molecular sciences and changed the world. Organic synthesis played a major role in this revolution through its ability to construct the molecules of the living world and others like them whose primary element is carbon. Although the early beginnings of organic synthesis came about serendipitously, organic chemists quickly recognized its potential and moved decisively to advance and exploit it in myriad ways for the benefit of mankind. Indeed, from the early days of the synthesis of urea and the construction of the first carbon-carbon bond, the art of organic synthesis improved to impressively high levels of sophistication. Through its practice, today chemists can synthesize organic molecules--natural and designed--of all types of structural motifs and for all intents and purposes. The endeavor of constructing natural products--the organic molecules of nature--is justly called both a creative art and an exact science. Often called simply total synthesis, the replication of nature's molecules in the laboratory reflects and symbolizes the state of the art of synthesis in general. In the last few decades a surge in total synthesis endeavors around the world led to a remarkable collection of achievements that covers a wide ranging landscape of molecular complexity and diversity. In this article, we present highlights of some of our contributions in the field of total synthesis of natural products of biological and medicinal importance. For perspective, we also provide a listing of selected examples of additional natural products synthesized in other laboratories around the world over the last few years.
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Affiliation(s)
- K C Nicolaou
- Department of Chemistry and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
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33
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Sasmal S, Balasubrahmanyam D, Kanna Reddy HR, Balaji G, Srinivas G, Cheera S, Abbineni C, Sasmal PK, Khanna I, Sebastian V, Jadhav VP, Singh MP, Talwar R, Suresh J, Shashikumar D, Harinder Reddy K, Sihorkar V, Frimurer TM, Rist Ø, Elster L, Högberg T. Design and optimization of quinazoline derivatives as melanin concentrating hormone receptor 1 (MCHR1) antagonists: Part 2. Bioorg Med Chem Lett 2012; 22:3163-7. [DOI: 10.1016/j.bmcl.2012.03.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2012] [Revised: 03/11/2012] [Accepted: 03/13/2012] [Indexed: 10/28/2022]
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34
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Jones KM, Tomkinson NCO. Metal-Free Dihydroxylation of Alkenes using Cyclobutane Malonoyl Peroxide. J Org Chem 2012; 77:921-8. [DOI: 10.1021/jo202084w] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Kevin M. Jones
- School of Chemistry, Main Building, Cardiff University, Park Place, Cardiff, CF10 3AT,
U. K
| | - Nicholas C. O. Tomkinson
- WestCHEM, Department
of Pure
and Applied Chemistry, Thomas Graham Building, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL,
U. K
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35
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Baig RBN, Varma RS. Stereo- and regio-selective one-pot synthesis of triazole-based unnatural amino acids and β-amino triazoles. Chem Commun (Camb) 2012; 48:5853-5. [DOI: 10.1039/c2cc32392c] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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36
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Pouwer RH, Richard JA, Tseng CC, Chen DYK. Chemical synthesis of the englerins. Chem Asian J 2011; 7:22-35. [PMID: 22162365 DOI: 10.1002/asia.201100780] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Indexed: 11/07/2022]
Abstract
In the long lasting battle against cancer, Nature sometimes gives a helping hand to researchers to find new drugs for the treatment of diseases and improvement of patients' well-being. Englerin A has emerged as a promising anticancer candidate as well as being an exciting synthetic challenge for organic chemists. This focus review summarizes the total syntheses reported to date and the synthetic approaches toward analogues of this fascinating natural product.
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Affiliation(s)
- Rebecca H Pouwer
- Eskitis Institute for Cell and Molecular Therapies, Griffith University, Brisbane Innovation Park, Nathan, Qld 4111, Australia
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37
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One-pot synthesis of enantiomerically pure 1, 2-diols: asymmetric reduction of aromatic α-oxoaldehydes catalysed by Candida parapsilosis ATCC 7330. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.12.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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38
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Lalot J, Tite T, Wadouachi A, Postel D, Nguyen Van Nhien A. Spiro-sulfamidate and sulfate nucleosides via 2′ and 3′-C-branched-chain sugars and nucleosides. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.06.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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39
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Rappai JP, Karthikeyan J, Prathapan S, Unnikrishnan PA. Simple and Efficient One-Pot Synthesis of Nitriles from Amides and Oximes Using in Situ–Generated Burgess-Type Reagent. SYNTHETIC COMMUN 2011. [DOI: 10.1080/00397911.2010.515333] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- John P. Rappai
- a Department of Applied Chemistry , Cochin University of Science and Technology , Cochin , Kerala , India
- b Department of Chemistry , Government Victoria College , Palakkad , Kerala , India
| | - Jayakumar Karthikeyan
- a Department of Applied Chemistry , Cochin University of Science and Technology , Cochin , Kerala , India
| | - Sreedharan Prathapan
- a Department of Applied Chemistry , Cochin University of Science and Technology , Cochin , Kerala , India
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40
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Mata L, Jiménez-Osés G, Avenoza A, Busto JH, Peregrina JM. Stereocontrolled Ring-Opening of a Hindered Sulfamidate with Nitrogen-Containing Aromatic Heterocycles: Synthesis of Chiral Quaternary Imidazole Derivatives. J Org Chem 2011; 76:4034-42. [DOI: 10.1021/jo200479y] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lara Mata
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, UA-CSIC, E-26006 Logroño, Spain
| | - Gonzalo Jiménez-Osés
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
| | - Alberto Avenoza
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, UA-CSIC, E-26006 Logroño, Spain
| | - Jesús H. Busto
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, UA-CSIC, E-26006 Logroño, Spain
| | - Jesús M. Peregrina
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, UA-CSIC, E-26006 Logroño, Spain
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41
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Nasir Baig R, Phani Kumar N, Mannuthodikayil J, Chandrasekaran S. Synthesis of amino thiols and isocysteines via regioselective ring opening of sulfamidates with tetrathiomolybdate. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.02.074] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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42
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Andrews KM, Beebe DA, Benbow JW, Boyer DA, Doran SD, Hui Y, Liu S, McPherson RK, Neagu C, Parker JC, Piotrowski DW, Schneider SR, Treadway JL, VanVolkenberg MA, Zembrowski WJ. 1-((3S,4S)-4-Amino-1-(4-substituted-1,3,5-triazin-2-yl) pyrrolidin-3-yl)-5,5-difluoropiperidin-2-one inhibitors of DPP-4 for the treatment of type 2 diabetes. Bioorg Med Chem Lett 2011; 21:1810-4. [DOI: 10.1016/j.bmcl.2011.01.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Revised: 01/13/2011] [Accepted: 01/14/2011] [Indexed: 10/18/2022]
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43
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Banert K, Ries M, Schaumann E. The Reaction of Cyclopropanols with Burgess Reagent: A Reinvestigation and Correction. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.531334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Klaus Banert
- a Technische Universität Chemnitz , Chemnitz, Germany
| | - Monika Ries
- b Technische Universität Clausthal , Clausthal-Zellerfeld, Germany
| | - Ernst Schaumann
- b Technische Universität Clausthal , Clausthal-Zellerfeld, Germany
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44
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Lee SA, Kwak SH, Lee KI. Highly enantioselective synthesis of cyclic sulfamidates and sulfamidesviarhodium-catalyzed transfer hydrogenation. Chem Commun (Camb) 2011; 47:2372-4. [DOI: 10.1039/c0cc04166a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Lu H, Jiang H, Hu Y, Wojtas L, Zhang XP. Chemoselective intramolecular allylic C–H amination versus CC aziridination through Co(ii)-based metalloradical catalysis. Chem Sci 2011. [DOI: 10.1039/c1sc00366f] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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46
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Kim J, De Castro KA, Lim M, Rhee H. Reduction of aromatic and aliphatic keto esters using sodium borohydride/MeOH at room temperature: a thorough investigation. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.04.062] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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47
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Metcalf TA, Simionescu R, Hudlicky T. Design of Thermally Stable Versions of the Burgess Reagent: Stability and Reactivity Study. J Org Chem 2010; 75:3447-50. [DOI: 10.1021/jo100212n] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas A. Metcalf
- Department of Chemistry and Centre for Biotechnology, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada
| | - Razvan Simionescu
- Department of Chemistry and Centre for Biotechnology, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada
| | - Tomas Hudlicky
- Department of Chemistry and Centre for Biotechnology, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada
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48
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Rashid Baig NB, Chandrakala RN, Sudhir VS, Chandrasekaran S. Synthesis of Unnatural Selenocystines and β-Aminodiselenides via Regioselective Ring-Opening of Sulfamidates Using a Sequential, One-Pot, Multistep Strategy. J Org Chem 2010; 75:2910-21. [DOI: 10.1021/jo1001388] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nasir Baig Rashid Baig
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, Karnataka, India
| | - R. N. Chandrakala
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, Karnataka, India
| | - V. Sai Sudhir
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, Karnataka, India
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49
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Lorion M, Agouridas V, Couture A, Deniau E, Grandclaudon P. Cyclic Sulfamidates as Vehicles for the Synthesis of Poly- and Diversely Substituted Benzosultams via Unusual S(O)2−O Bond Cleavage. Org Lett 2010; 12:1356-9. [PMID: 20180517 DOI: 10.1021/ol100288k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Magali Lorion
- Univ Lille Nord de France, F-59000 Lille, France, USTL, Laboratoire de Chimie Organique Physique, Bâtiment C3(2), F-59655 Villeneuve d’Ascq, France, and CNRS, UMR 8009 “COM”, F-59655 Villeneuve d’Ascq, France, CNRS, UMR 8181 “UCCS”, F-59655 Villeneuve d’Ascq, France
| | - Vangelis Agouridas
- Univ Lille Nord de France, F-59000 Lille, France, USTL, Laboratoire de Chimie Organique Physique, Bâtiment C3(2), F-59655 Villeneuve d’Ascq, France, and CNRS, UMR 8009 “COM”, F-59655 Villeneuve d’Ascq, France, CNRS, UMR 8181 “UCCS”, F-59655 Villeneuve d’Ascq, France
| | - Axel Couture
- Univ Lille Nord de France, F-59000 Lille, France, USTL, Laboratoire de Chimie Organique Physique, Bâtiment C3(2), F-59655 Villeneuve d’Ascq, France, and CNRS, UMR 8009 “COM”, F-59655 Villeneuve d’Ascq, France, CNRS, UMR 8181 “UCCS”, F-59655 Villeneuve d’Ascq, France
| | - Eric Deniau
- Univ Lille Nord de France, F-59000 Lille, France, USTL, Laboratoire de Chimie Organique Physique, Bâtiment C3(2), F-59655 Villeneuve d’Ascq, France, and CNRS, UMR 8009 “COM”, F-59655 Villeneuve d’Ascq, France, CNRS, UMR 8181 “UCCS”, F-59655 Villeneuve d’Ascq, France
| | - Pierre Grandclaudon
- Univ Lille Nord de France, F-59000 Lille, France, USTL, Laboratoire de Chimie Organique Physique, Bâtiment C3(2), F-59655 Villeneuve d’Ascq, France, and CNRS, UMR 8009 “COM”, F-59655 Villeneuve d’Ascq, France, CNRS, UMR 8181 “UCCS”, F-59655 Villeneuve d’Ascq, France
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50
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Bower JF, Rujirawanich J, Gallagher T. N-Heterocycle construction via cyclic sulfamidates. Applications in synthesis. Org Biomol Chem 2010; 8:1505-19. [DOI: 10.1039/b921842d] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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