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Lee CF, Brown CE, Nielsen AJ, Kim C, Livne-Bar I, Parsons PJ, Boldron C, Autelitano F, Weaver DF, Sivak JM, Reed MA. A Stereocontrolled Total Synthesis of Lipoxin B4 and its Biological Activity as a Pro-Resolving Lipid Mediator of Neuroinflammation. Chemistry 2022; 28:e202200360. [PMID: 35491534 PMCID: PMC9891714 DOI: 10.1002/chem.202200360] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Indexed: 02/03/2023]
Abstract
Two stereocontrolled, efficient, and modular syntheses of eicosanoid lipoxin B4 (LXB4 ) are reported. One features a stereoselective reduction followed by an asymmetric epoxidation sequence to set the vicinal diol stereocentres. The dienyne was installed via a one-pot Wittig olefination and base-mediated epoxide ring opening cascade. The other approach installed the diol through an asymmetric dihydroxylation reaction followed by a Horner-Wadsworth-Emmons olefination to afford the common dienyne intermediate. Finally, a Sonogashira coupling and an alkyne hydrosilylation/proto-desilylation protocol furnished LXB4 in 25 % overall yield in just 10 steps. For the first time, LXB4 has been fully characterized spectroscopically with its structure confirmed as previously reported. We have demonstrated that the synthesized LXB4 showed similar biological activity to commercial sources in a cellular neuroprotection model. This synthetic route can be employed to synthesize large quantities of LXB4 , enable synthesis of new analogs, and chemical probes for receptor and pathway characterization.
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Affiliation(s)
- C. Frank Lee
- Centre for Medicinal Chemistry and Drug Discovery, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Carla E. Brown
- Centre for Medicinal Chemistry and Drug Discovery, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Alexander J. Nielsen
- Centre for Medicinal Chemistry and Drug Discovery, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Changmo Kim
- Donald K. Johnson Eye Institute, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada,Department of Ophthalmology & Vision Science University of Toronto Toronto, Ontario, Canada,Department of Medicine University of Toronto Toronto, Ontario, Canada
| | - Izhar Livne-Bar
- Donald K. Johnson Eye Institute, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada,Department of Ophthalmology & Vision Science University of Toronto Toronto, Ontario, Canada
| | - Philip J. Parsons
- Molecular Sciences Research Hub, White City Campus, Imperial College London, London, United Kingdom
| | | | | | - Donald F. Weaver
- Centre for Medicinal Chemistry and Drug Discovery, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada,Department of Fundamental Neurobiology Krembil Research Institute, University Health Network Toronto, Ontario, Canada,Department of Chemistry University of Toronto Toronto, Ontario, Canada,Department of Medicine University of Toronto Toronto, Ontario, Canada
| | - Jeremy M. Sivak
- Donald K. Johnson Eye Institute, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada,Department of Ophthalmology & Vision Science University of Toronto Toronto, Ontario, Canada,Department of Laboratory Medicine & Pathobiology University of Toronto Toronto, Ontario, Canada
| | - Mark A. Reed
- Centre for Medicinal Chemistry and Drug Discovery, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada,Department of Pharmacology & Toxicology University of Toronto Toronto, Ontario, Canada,
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Yan J, Wang Z, Wang L. Microwave-Accelerated Solventless Sonogashira-Like Coupling Reaction of 1,1-Dibromo-1-Alkenes with Organic Halides on Nickel(0) Powder-Doped KF/Al2O3. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823404323000864] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Under solvent free and microwave irradiation reaction conditions, a Sonogashira-like coupling reaction of 1,1-dibromo-1-alkenes with organic halides on nickel(0) powder-doped KF/Al2O3 has been developed, which generates the corresponding alkynes in moderate to good yields.
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Affiliation(s)
- Jincan Yan
- Department of Chemistry, Huaibei Coal Teachers College, Huaibei, Anhui 235000, P. R. China
| | - Zhiyuan Wang
- Department of Chemistry, Huaibei Coal Teachers College, Huaibei, Anhui 235000, P. R. China
| | - Lei Wang
- Department of Chemistry, Huaibei Coal Teachers College, Huaibei, Anhui 235000, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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Laitar DS, Kramer JW, Whiting BT, Lobkovsky EB, Coates GW. Beta-amidoaldehydes via oxazoline hydroformylation. Chem Commun (Camb) 2009:5704-6. [PMID: 19774242 DOI: 10.1039/b913698c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
4-Substituted oxazolines, which are readily synthesized from naturally occurring alpha-amino acids, are converted efficiently and stereospecifically to beta-amidoaldehydes in the presence of synthesis gas and catalytic dicobalt octacarbonyl.
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Affiliation(s)
- David S Laitar
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, NY 14853-1301, USA
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Yamamoto Y. Silver-Catalyzed Csp−H and Csp−Si Bond Transformations and Related Processes. Chem Rev 2008; 108:3199-222. [DOI: 10.1021/cr078359u] [Citation(s) in RCA: 196] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshihiko Yamamoto
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, Ookatyama, Meguro-ku, Tokyo 152-8552, Japan
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