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Chen VY, Kwon O. Unified Approach to Furan Natural Products via Phosphine-Palladium Catalysis. Angew Chem Int Ed Engl 2021; 60:8874-8881. [PMID: 33533120 PMCID: PMC8016739 DOI: 10.1002/anie.202015232] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 01/12/2021] [Indexed: 01/14/2023]
Abstract
Polyalkyl furans are widespread in nature, often performing important biological roles. Despite a plethora of methods for the synthesis of tetrasubstituted furans, the construction of tetraalkyl furans remains non-trivial. The prevalence of alkyl groups in bioactive furan natural products, combined with the desirable bioactivities of tetraalkyl furans, calls for a general synthetic protocol for polyalkyl furans. This paper describes a Michael-Heck approach, using sequential phosphine-palladium catalysis, for the preparation of various polyalkyl furans from readily available precursors. The versatility of this method is illustrated by the total syntheses of nine distinct polyalkylated furan natural products belonging to different classes, namely the furanoterpenes rosefuran, sesquirosefuran, and mikanifuran; the marine natural products plakorsins A, B, and D and plakorsin D methyl ester; and the furan fatty acids 3D5 and hydromumiamicin.
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Affiliation(s)
- Violet Yijang Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095-1659 (USA)
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095-1659 (USA)
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Chen VY, Kwon O. Unified Approach to Furan Natural Products via Phosphine‐Palladium Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Violet Yijang Chen
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095-1659 USA
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095-1659 USA
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Blaess M, Bibak N, Claus RA, Kohl M, Bonaterra GA, Kinscherf R, Laufer S, Deigner HP. NB 06: From a simple lysosomotropic aSMase inhibitor to tools for elucidating the role of lysosomes in signaling apoptosis and LPS-induced inflammation. Eur J Med Chem 2017; 153:73-104. [PMID: 29031494 DOI: 10.1016/j.ejmech.2017.09.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 08/29/2017] [Accepted: 09/13/2017] [Indexed: 01/13/2023]
Abstract
Ceramide generation is involved in signal transduction of cellular stress response, in particular during stress-induced apoptosis in response to stimuli such as minimally modified Low-density lipoproteins, TNFalpha and exogenous C6-ceramide. In this paper we describe 48 diverse synthetic products and evaluate their lysosomotropic and acid sphingomyelinase inhibiting activities in macrophages. A stimuli-induced increase of C16-ceramide in macrophages can be almost completely suppressed by representative compound NB 06 providing an effective protection of macrophages against apoptosis. Compounds like NB 06 thus offer highly interesting fields of application besides prevention of apoptosis of macrophages in atherosclerotic plaques in vessel walls. Most importantly, they can be used for blocking pH-dependent lysosomal processes and enzymes in general as well as for analyzing lysosomal dependent cellular signaling. Modulation of gene expression of several prominent inflammatory messengers IL1B, IL6, IL23A, CCL4 and CCL20 further indicate potentially beneficial effects in the field of (systemic) infections involving bacterial endotoxins like LPS or infections with influenza A virus.
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Affiliation(s)
- Markus Blaess
- Furtwangen University, Medical and Life Sciences Faculty, Institute of Precision Medicine, Jakob-Kienzle-Str. 17, D-78054 Villingen-Schwenningen, Germany; Clinic for Anesthesiology and Intensive Care, Jena University Hospital, Am Klinikum 1, D-07747 Jena, Germany
| | - Nelly Bibak
- Furtwangen University, Medical and Life Sciences Faculty, Institute of Precision Medicine, Jakob-Kienzle-Str. 17, D-78054 Villingen-Schwenningen, Germany
| | - Ralf A Claus
- Clinic for Anesthesiology and Intensive Care, Jena University Hospital, Am Klinikum 1, D-07747 Jena, Germany; Center for Sepsis Control and Care (CSCC), Jena University Hospital, Am Klinikum 1, D-07747 Jena, Germany
| | - Matthias Kohl
- Furtwangen University, Medical and Life Sciences Faculty, Institute of Precision Medicine, Jakob-Kienzle-Str. 17, D-78054 Villingen-Schwenningen, Germany
| | - Gabriel A Bonaterra
- Institute of Anatomy and Cell Biology, Department of Medical Cell Biology, University of Marburg, Robert-Koch-Straße 8, D-35032 Marburg, Germany
| | - Ralf Kinscherf
- Institute of Anatomy and Cell Biology, Department of Medical Cell Biology, University of Marburg, Robert-Koch-Straße 8, D-35032 Marburg, Germany
| | - Stefan Laufer
- Pharmaceutical Institute, Department of Pharmaceutical Chemistry, University of Tuebingen, Auf der Morgenstelle 8, D-72076 Tuebingen, Germany
| | - Hans-Peter Deigner
- Furtwangen University, Medical and Life Sciences Faculty, Institute of Precision Medicine, Jakob-Kienzle-Str. 17, D-78054 Villingen-Schwenningen, Germany; Fraunhofer Institute IZI, Leipzig, EXIM Department, Schillingallee 68, D-18057 Rostock, Germany.
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van Royen LA, Mijngheer R, De Clercq PJ. Intramolecular Diels-Alder Reaction with Furan-Diene. 1. A Novel Entry to the BCD-Ring System of 11-Ketosteroids. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bscb.19840931113] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Albert S, Soret A, Blanco L, Deloisy S. Soluble and polymer-supported 2- and 3-benzylated furans for the preparation of α,β-ethylenic carbonyl compounds. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.01.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Rieke RD, Suh Y, Kim SH. Heteroaryl manganese reagents: direct preparation and reactivity studies. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.06.092] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Cahiez G, Chavant PY, Metais E. A new simple route to furanic ketones; Preparation of Elsholtzione, naginata ketone and perilla ketone. Tetrahedron Lett 1992. [DOI: 10.1016/s0040-4039(00)79145-3] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Agami C, Couty F, Prince B, Puchot C. Asymmetric synthesis of N-methyl-α-amino esters from a glyoxal derived chiral heterocycle. Tetrahedron 1991. [DOI: 10.1016/s0040-4020(01)87103-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Araki S, Butsugan Y. Regio-controlled Prenylation and Geranylation of 3-Furylmethylmagnesium Bromide. Selective Syntheses of 3-Substituted Furanoid and 2-Substituted 3-Methylfuranoid Terpenes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1983. [DOI: 10.1246/bcsj.56.1446] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Araki S, Butsugan Y. SELECTIVE SYNTHESES OF DENDROLASIN AND SESQUIROSEFURAN BY THE COUPLING OF 3-FURYLMETHYLMAGNESIUM BROMIDE WITH GERANYL DIETHYL PHOSPHATE. CHEM LETT 1982. [DOI: 10.1246/cl.1982.177] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Tanis SP. A simple synthesis of 3-substituted furans. The preparations of dendrolasin, perillene and congeners. Tetrahedron Lett 1982. [DOI: 10.1016/s0040-4039(00)88573-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Akimoto I, Sano M, Suzuki A. Regiospecific Synthesis of 3-Alkylfurans and 3-AlkylthiophenesviaOrganoboranes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1981. [DOI: 10.1246/bcsj.54.1587] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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