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Evans R, Bolduc PN, Pfaffenbach M, Gao F, May-Dracka T, Fang T, Hopkins BT, Chodaparambil JV, Henry KL, Li P, Metrick C, Nelson A, Trapa P, Thomas A, Burkly L, Peterson EA. The Discovery of 7-Isopropoxy-2-(1-methyl-2-oxabicyclo[2.1.1]hexan-4-yl)- N-(6-methylpyrazolo[1,5- a]pyrimidin-3-yl)imidazo[1,2- a]pyrimidine-6-carboxamide (BIO-7488), a Potent, Selective, and CNS-Penetrant IRAK4 Inhibitor for the Treatment of Ischemic Stroke. J Med Chem 2024. [PMID: 38467640 DOI: 10.1021/acs.jmedchem.3c02226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Interleukin receptor-associated kinase 4 (IRAK4) is a key node of signaling within the innate immune system that regulates the production of inflammatory cytokines and chemokines. The presence of damage-associated molecular patterns (DAMPs) after tissue damage such as stroke or traumatic brain injury (TBI) initiates signaling through the IRAK4 pathway that can lead to a feed-forward inflammatory loop that can ultimately hinder patient recovery. Herein, we describe the first potent, selective, and CNS-penetrant IRAK4 inhibitors for the treatment of neuroinflammation. Lead compounds from the series were evaluated in CNS PK/PD models of inflammation, as well as a mouse model of ischemic stroke. The SAR optimization detailed within culminates in the discovery of BIO-7488, a highly selective and potent IRAK4 inhibitor that is CNS penetrant and has excellent ADME properties.
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Affiliation(s)
- Ryan Evans
- Department of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Philippe N Bolduc
- Department of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Magnus Pfaffenbach
- Department of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Fang Gao
- Department of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Tricia May-Dracka
- Department of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Terry Fang
- Department of Acute Neurology, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Brian T Hopkins
- Department of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Jayanth V Chodaparambil
- Physical Biochemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Kate L Henry
- Department of Acute Neurology, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Pei Li
- Drug Metabolism and Pharmacokinetics, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Claire Metrick
- Physical Biochemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Ashley Nelson
- Department of Acute Neurology, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Patrick Trapa
- Drug Metabolism and Pharmacokinetics, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Ankur Thomas
- Department of Acute Neurology, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Linda Burkly
- Department of Acute Neurology, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Emily A Peterson
- Department of Medicinal Chemistry, Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
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Bolduc PN, Pfaffenbach M, Blasczak VD, Mathieu SR, Peterson EA. Synthesis of N-Substituted 3-Amino-2-pyridones. Org Lett 2022; 24:6133-6136. [PMID: 35960821 DOI: 10.1021/acs.orglett.2c02189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Pyridones are versatile building blocks in organic synthesis and a privileged motif in drug discovery. However, N-substituted 2-pyridones bearing an α-tertiary carbon, cyclopropyl, or heterocycle off of the pyridone nitrogen atom remain challenging to prepare. Herein, we describe the efficient synthesis of a large variety of N-substituted 2-pyridones from ethyl nitroacetate and readily available primary amine building blocks, which can be utilized on a large scale and in parallel medicinal chemistry applications.
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Affiliation(s)
- Philippe N Bolduc
- Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Magnus Pfaffenbach
- Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Vanna D Blasczak
- Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Steven R Mathieu
- Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Emily A Peterson
- Biogen, 225 Binney Street, Cambridge, Massachusetts 02142, United States
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Pfaffenbach M, Bakanas I, O'Connor NR, Herrick JL, Sarpong R. Total Syntheses of Xiamycins A, C, F, H and Oridamycin A and Preliminary Evaluation of their Anti‐Fungal Properties. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908399] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
| | - Ian Bakanas
- Department of Chemistry University of California Berkeley CA 94720 USA
| | | | | | - Richmond Sarpong
- Department of Chemistry University of California Berkeley CA 94720 USA
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Pfaffenbach M, Bakanas I, O'Connor NR, Herrick JL, Sarpong R. Total Syntheses of Xiamycins A, C, F, H and Oridamycin A and Preliminary Evaluation of their Anti-Fungal Properties. Angew Chem Int Ed Engl 2019; 58:15304-15308. [PMID: 31419367 PMCID: PMC6791741 DOI: 10.1002/anie.201908399] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Indexed: 01/22/2023]
Abstract
Divergent and enantiospecific total syntheses of the indolosesquiterpenoids xiamycins A, C, F, H and oridamycin A have been accomplished. The syntheses, which commence from (R)-carvone, employ a key photoinduced benzannulation sequence to forge the carbazole moiety characteristic of these natural products. Late-stage diversification from a common intermediate enabled the first syntheses of xiamycins C and F, and an unexpected one-pot oxidative decarboxylation, which may prove general, led to xiamycin H. All synthetic intermediates and the natural products were tested for anti-fungal activity. Xiamycin H emerged as an inhibitor of three agriculturally relevant fungal pathogens.
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Affiliation(s)
- Magnus Pfaffenbach
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
| | - Ian Bakanas
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
| | | | - Jessica L Herrick
- Corteva Agriscience, Crop Protection Discovery, Zionsville, IN, 46077, USA
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
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Pfaffenbach M, Gaich T. The Rhazinilam-Leuconoxine-Mersicarpine Triad of Monoterpenoid Indole Alkaloids. The Alkaloids: Chemistry and Biology 2017; 77:1-84. [DOI: 10.1016/bs.alkal.2016.07.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Abstract
Herein, we report the synthetically practical, short, and general access to novel indolophane architectures by means of a photochemical C-H activation process-the Witkop cyclization. These highly strained scaffolds were obtained by photoinduced ring closure and feature atropisomerism as well as aromatic ring current effects, which both have been investigated. The prevailing regioselectivity of theWitkop cyclization reaction was completely reversed by the presence of a quaternary carbon center, exerting a strong Thorpe-Ingold effect on the system for which experimental-evidence is provided.
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Affiliation(s)
- Magnus Pfaffenbach
- Faculty of Chemistry, University of Konstanz, Universitätsstr. 10, 78457, Konstanz, Germany
| | - Alexander Roller
- Center for X-ray Analysis, Faculty of Chemistry, University of Vienna, Währingerstrasse 42, 1090, Vienna, Austria
| | - Tanja Gaich
- Faculty of Chemistry, University of Konstanz, Universitätsstr. 10, 78457, Konstanz, Germany.
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Rong J, Pellegrini T, Harutyunyan SR, Šponer JE, Šponer J, Nováková O, Brabec V, Šedo O, Zdráhal Z, Costanzo G, Pino S, Saladino R, Di Mauro E, Kamalov M, Kaur H, Brimble MA, Papadimitriou SA, Salinas Y, Resmini M, Xie J, Xie Y, Sazonov PK, Beletskaya IP, Pfaffenbach M, Gaich T, Meninno S, Lattanzi A. Cover Picture: Synthesis of Chiral Tertiary Alcohols by CuI-Catalyzed Enantioselective Addition of Organomagnesium Reagents to Ketones / Emergence of the First Catalytic Oligonucleotides in a Formamide-Based Origin Scenario / Intermolecular Peptide Cross-. Chemistry 2016. [DOI: 10.1002/chem.201600250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jiawei Rong
- Stratingh Institute; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Tilde Pellegrini
- Stratingh Institute; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | | | - Judit E. Šponer
- Institute of Biophysics; Academy of Sciences of the Czech Republic; Královopolská 135 61265 Brno Czech Republic
- CEITEC - Central European Institute of Technology; Masaryk University; Campus Bohunice, Kamenice 5 62500 Brno Czech Republic
| | - Jiří Šponer
- Institute of Biophysics; Academy of Sciences of the Czech Republic; Královopolská 135 61265 Brno Czech Republic
- CEITEC - Central European Institute of Technology; Masaryk University; Campus Bohunice, Kamenice 5 62500 Brno Czech Republic
| | - Olga Nováková
- Institute of Biophysics; Academy of Sciences of the Czech Republic; Královopolská 135 61265 Brno Czech Republic
| | - Viktor Brabec
- Institute of Biophysics; Academy of Sciences of the Czech Republic; Královopolská 135 61265 Brno Czech Republic
| | - Ondrej Šedo
- CEITEC - Central European Institute of Technology; Masaryk University; Campus Bohunice, Kamenice 5 62500 Brno Czech Republic
| | - Zbyněk Zdráhal
- CEITEC - Central European Institute of Technology; Masaryk University; Campus Bohunice, Kamenice 5 62500 Brno Czech Republic
| | - Giovanna Costanzo
- Istituto di Biologia e Patologia Molecolari; CNR, P.le Aldo Moro, 5 Rome 00185 Italy
| | - Samanta Pino
- Dipartimento di Biologia e Biotecnologie “Charles Darwin”; “Sapienza” Università di Roma; Piazzale Aldo Moro, 5 Rome 00185 Italy
| | - Raffaele Saladino
- Dipartimento di Scienze Ecologiche e Biologiche; Università della Tuscia; Via San Camillo De Lellis 01100 Viterbo Italy
| | - Ernesto Di Mauro
- Dipartimento di Biologia e Biotecnologie “Charles Darwin”; “Sapienza” Università di Roma; Piazzale Aldo Moro, 5 Rome 00185 Italy
| | - Meder Kamalov
- Institute of Biological Chemistry; Faculty of Chemistry; Währinger Straße 38 1090 Vienna Austria
| | - Harveen Kaur
- School of Chemical Sciences; The University of Auckland; 23 Symonds St. Auckland 1142 New Zealand
| | - Margaret A. Brimble
- School of Chemical Sciences; The University of Auckland; 23 Symonds St. Auckland 1142 New Zealand
- School of Biological Sciences; The University of Auckland; 3 Symonds St. Auckland 1142 New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery; The University of Auckland; 3 Symonds St. Auckland 1142 New Zealand
| | - Sofia A. Papadimitriou
- Queen Mary University of London; Department of Chemistry, SBCS; Mile End Road London E1 4NS UK
| | - Yolanda Salinas
- Queen Mary University of London; Department of Chemistry, SBCS; Mile End Road London E1 4NS UK
| | - Marina Resmini
- Queen Mary University of London; Department of Chemistry, SBCS; Mile End Road London E1 4NS UK
| | - Junfeng Xie
- College of Chemistry; Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes; Ministry of Education; Shandong Normal University; Jinan Shandong 250014 P. R. China
- Hefei National Laboratory for Physical Sciences at the Microscale; Department of Chemistry; University of Science and Technology of China, Hefei; Anhui 230026 P. R. China
| | - Yi Xie
- Hefei National Laboratory for Physical Sciences at the Microscale; Department of Chemistry; University of Science and Technology of China, Hefei; Anhui 230026 P. R. China
| | - Petr K. Sazonov
- Chemistry Department; Moscow State University; Leninskie Gory, 1 119992 Moscow Russia
| | - Irina P. Beletskaya
- Chemistry Department; Moscow State University; Leninskie Gory, 1 119992 Moscow Russia
| | - Magnus Pfaffenbach
- Institute of Organic Chemistry; Leibniz University of Hannover; Schneiderberg 1b 30167 Hannover Germany
| | - Tanja Gaich
- Institute of Organic Chemistry; Leibniz University of Hannover; Schneiderberg 1b 30167 Hannover Germany
| | - Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 84084 Fisciano Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 84084 Fisciano Italy
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Affiliation(s)
- Magnus Pfaffenbach
- Institute of Organic Chemistry; Leibniz University of Hannover; Schneiderberg 1b 30167 Hannover Germany
| | - Tanja Gaich
- Institute of Organic Chemistry; Leibniz University of Hannover; Schneiderberg 1b 30167 Hannover Germany
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Wender PA, Inagaki F, Pfaffenbach M, Stevens MC. Propargyltrimethylsilanes as allene equivalents in transition metal-catalyzed [5 + 2] cycloadditions. Org Lett 2014; 16:2923-5. [PMID: 24819093 PMCID: PMC4051429 DOI: 10.1021/ol501114q] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
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Conventional
allenes have not been effective π-reactive 2-carbon components
in many
intermolecular cycloadditions including metal-catalyzed [5 + 2] cycloadditions.
We report herein that rhodium-catalyzed [5 + 2] cycloadditions of
propargyltrimethylsilanes and vinylcyclopropanes
provide, after in situ protodesilylation, a highly efficient route
to formal allene cycloadducts. Propargyltrimethylsilanes
function as safe, easily handled synthetic equivalents of gaseous
allenes and hard-to-access monosubstituted allenes. In this one-flask
procedure, they provide cycloadducts of what is formally addition
to the more sterically encumbered allene double bond.
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Affiliation(s)
- Paul A Wender
- Department of Chemistry, Department of Chemical and Systems Biology, Stanford University , Stanford, California 94305-5080, United States
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Gritsch PJ, Leitner C, Pfaffenbach M, Gaich T. Die Witkop-Cyclisierung: eine photoinduzierte C-H-Aktivierung des Indolsystems. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307391] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Gritsch PJ, Leitner C, Pfaffenbach M, Gaich T. The Witkop Cyclization: A Photoinduced CH Activation of the Indole System. Angew Chem Int Ed Engl 2013; 53:1208-17. [DOI: 10.1002/anie.201307391] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Indexed: 11/08/2022]
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