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Jewula P, Grandmougin M, Choppin M, Tivelli AMC, Amati A, Rousselin Y, Karmazin L, Chambron J, Meyer M. Complexes of Fe(III) and Ga(III) Derived from the Cyclic 6‐ and 7‐Membered Hydroxamic Acids Found in Mixed Siderophores. Eur J Inorg Chem 2023. [DOI: 10.1002/ejic.202300038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Affiliation(s)
- Pawel Jewula
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB) UMR 6302 CNRS Université de Bourgogne 9 avenue Alain Savary, BP 47870 21078 Dijon Cedex France
| | - Mickaël Grandmougin
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB) UMR 6302 CNRS Université de Bourgogne 9 avenue Alain Savary, BP 47870 21078 Dijon Cedex France
| | - Mélanie Choppin
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB) UMR 6302 CNRS Université de Bourgogne 9 avenue Alain Savary, BP 47870 21078 Dijon Cedex France
| | - Anna Maria Chiara Tivelli
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB) UMR 6302 CNRS Université de Bourgogne 9 avenue Alain Savary, BP 47870 21078 Dijon Cedex France
| | - Agnese Amati
- Institut de Chimie de Strasbourg UMR 7177 CNRS Université de Strasbourg 1 rue Blaise Pascal, BP 296 R 8 67008 Strasbourg Cedex France
| | - Yoann Rousselin
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB) UMR 6302 CNRS Université de Bourgogne 9 avenue Alain Savary, BP 47870 21078 Dijon Cedex France
| | - Lydia Karmazin
- Institut de Chimie de Strasbourg UMR 7177 CNRS Université de Strasbourg 1 rue Blaise Pascal, BP 296 R 8 67008 Strasbourg Cedex France
| | - Jean‐Claude Chambron
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB) UMR 6302 CNRS Université de Bourgogne 9 avenue Alain Savary, BP 47870 21078 Dijon Cedex France
- Institut de Chimie de Strasbourg UMR 7177 CNRS Université de Strasbourg 1 rue Blaise Pascal, BP 296 R 8 67008 Strasbourg Cedex France
| | - Michel Meyer
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB) UMR 6302 CNRS Université de Bourgogne 9 avenue Alain Savary, BP 47870 21078 Dijon Cedex France
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Goldstein EL, Takada H, Sumii Y, Baba K, Stoltz BM. Synthesis of enantioenriched 2,2-disubstituted pyrrolidines via sequential asymmetric allylic alkylation and ring contraction. Tetrahedron 2022; 123:132940. [PMID: 36968983 PMCID: PMC10038171 DOI: 10.1016/j.tet.2022.132940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The synthesis of a variety of enantioenriched 2,2-disubstituted pyrrolidines is described. A stereogenic quaternary center is first formed utilizing an asymmetric allylic alkylation reaction of a benzyloxy imide, which can then be reduced to a chiral hydroxamic acid. This compound can then undergo a thermal "Spino" ring contraction to afford a carbamate protected 2,2-disubstituted pyrrolidine stereospecifically. These pyrrolidines can be further advanced to enantioenriched indolizidine compounds. This reaction sequence allows access to new molecules that could be useful in the development of pharmaceutical agents.
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Affiliation(s)
- Elizabeth L Goldstein
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Hirokazu Takada
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Yuji Sumii
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Katsuaki Baba
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Brian M Stoltz
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
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Takeda N, Kobori Y, Okamura K, Yasui M, Ueda M. Sequential Nucleophilic Arylation/Ring-Contractive Rearrangement of N-Alkoxylactams. Org Lett 2020; 22:9740-9744. [DOI: 10.1021/acs.orglett.0c03821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Norihiko Takeda
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Yukiko Kobori
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Kohei Okamura
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Motohiro Yasui
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Masafumi Ueda
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
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Hiraoka S, Matsumoto T, Matsuzaka K, Sato T, Chida N. Approach to Fully Substituted Cyclic Nitrones from
N
‐Hydroxylactam Derivatives: Development and Application to the Total Synthesis of Cylindricine C. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shobu Hiraoka
- Department of Applied ChemistryFaculty of Science and TechnologyKeio University 3-14-1, Hiyoshi Kohoku-ku Yokohama 223-8522 Japan
| | - Tsutomu Matsumoto
- Department of Applied ChemistryFaculty of Science and TechnologyKeio University 3-14-1, Hiyoshi Kohoku-ku Yokohama 223-8522 Japan
| | - Koki Matsuzaka
- Department of Applied ChemistryFaculty of Science and TechnologyKeio University 3-14-1, Hiyoshi Kohoku-ku Yokohama 223-8522 Japan
| | - Takaaki Sato
- Department of Applied ChemistryFaculty of Science and TechnologyKeio University 3-14-1, Hiyoshi Kohoku-ku Yokohama 223-8522 Japan
| | - Noritaka Chida
- Department of Applied ChemistryFaculty of Science and TechnologyKeio University 3-14-1, Hiyoshi Kohoku-ku Yokohama 223-8522 Japan
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Hiraoka S, Matsumoto T, Matsuzaka K, Sato T, Chida N. Approach to Fully Substituted Cyclic Nitrones from N-Hydroxylactam Derivatives: Development and Application to the Total Synthesis of Cylindricine C. Angew Chem Int Ed Engl 2019; 58:4381-4385. [PMID: 30720229 DOI: 10.1002/anie.201901049] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Indexed: 01/03/2023]
Abstract
An approach to cyclic nitrones from N-hydroxylactam derivatives is documented. The nucleophilic addition of an organolithium reagent to an N-OSEM [SEM=2-(trimethylsilyl)ethoxymethyl] lactam forms a five-membered chelated intermediate, which undergoes both elimination and deprotection to give a fully substituted nitrone in a one-pot process. When combined with the N-oxidation of easily available chiral lactams, this method becomes especially useful for the quick synthesis of chiral nitrones in enantio-pure form, enabling the concise total synthesis of cylindricine C.
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Affiliation(s)
- Shobu Hiraoka
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Tsutomu Matsumoto
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Koki Matsuzaka
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Takaaki Sato
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Noritaka Chida
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
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Spino C, Aubert-Nicol S, Heinrich N, Lessard J. [Bis(trifluoroacetoxy)iodo]p-nitrobenzene and [Bis(trifluoroacetoxy)iodo]pentafluorobenzene as Lead Reagents for the Direct Ring Contraction of Lactams to Pyrrolidines. HETEROCYCLES 2019. [DOI: 10.3987/com-18-s(f)43] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, Rajasthan, India
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Aubert-Nicol S, Lessard J, Spino C. A Photorearrangement To Construct the ABDE Tetracyclic Core of Palau'amine. Org Lett 2018; 20:2615-2619. [PMID: 29667828 DOI: 10.1021/acs.orglett.8b00819] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A synthesis of the ABDE tetracyclic carbon core of palau'amine was achieved in 9 steps from commercial materials. The core's most notable feature, a highly strained trans cyclopenta[ c]pyrrolidine, was obtained in high yield using a ring contraction strategy starting from a much less strained trans bicyclic lactam derivative that is accessible in only 7 steps.
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Affiliation(s)
- Samuel Aubert-Nicol
- Département de Chimie , Université de Sherbrooke , 2500 Boul. Université , Sherbrooke , Québec , Canada , J1K 2R1
| | - Jean Lessard
- Département de Chimie , Université de Sherbrooke , 2500 Boul. Université , Sherbrooke , Québec , Canada , J1K 2R1
| | - Claude Spino
- Département de Chimie , Université de Sherbrooke , 2500 Boul. Université , Sherbrooke , Québec , Canada , J1K 2R1
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Piperidines from acid-catalysed cyclisations: Pitfalls, solutions and a new ring contraction to pyrrolidines. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yadav AK, Srivastava VP, Yadav LDS. An easy access to unsymmetrical ureas: a photocatalytic approach to the Lossen rearrangement. RSC Adv 2014. [DOI: 10.1039/c4ra03805c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Pichette S, Winter DK, Lessard J, Spino C. Converting cycloalkanones into N-heterocycles: formal synthesis of (-)-gephyrotoxin 287C. J Org Chem 2013; 78:12532-44. [PMID: 24188015 DOI: 10.1021/jo402217e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The photochemical rearrangement of N-activated lactams enables their ring contraction concomitant with the migration of a carbon onto a nitrogen atom. When coupled with the Beckmann rearrangement, this photochemical ring contraction converts cycloalkanones into N-heterocycles in a few steps and in a stereospecific manner. To showcase the method, we performed an efficient formal synthesis of (-)-gephyrotoxin 287C.
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Affiliation(s)
- Simon Pichette
- Département de Chimie, Université de Sherbrooke , Sherbrooke, Québec, Canada J1K 2R1
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Pichette S, Aubert-Nicol S, Lessard J, Spino C. Photochemical and thermal ring-contraction of cyclic hydroxamic acid derivatives. J Org Chem 2012. [PMID: 23198744 DOI: 10.1021/jo3023507] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Cyclic hydroxamic acids can undergo a thermal ring contraction after an in situ triflation. High yields of ring-contraction products are obtained with DBU when the migrating carbon is a methylene, while best results are obtained with Et(3)N for the migration of quaternary carbons. In some cases, the regiochemical outcome of the reaction can be controlled by changing the base. This novel thermal rearrangement complements a similar but photochemical rearrangement of N-mesyloxylactams.
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Affiliation(s)
- Simon Pichette
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Quebec, Canada J1K 2R1
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Pichette S, Aubert-Nicol S, Lessard J, Spino C. Regioselective Photochemical Rearrangement of N-Mesyloxylactams. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101222] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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