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Pompeo MM, Kelly SM, St-Jean F, Bass TM, Dalton DM, Zell D, Han C, Sirois LE, Gosselin F. Umpolung Flow Chemistry for the Synthesis of a 3-Oxo-3 H-spiro[benzofuran-2,4'-piperidine] Building Block. J Org Chem 2024. [PMID: 38767619 DOI: 10.1021/acs.joc.4c00337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
An efficient and scalable route to tert-butyl 3-oxo-3H-spiro[benzofuran-2,4'-piperidine]-1'-carboxylate, a central prochiral intermediate in the synthesis of SHP2 inhibitor GDC-1971 (migoprotafib), was achieved. Preparation of the title compound from readily available 2-fluorobenzaldehyde included formation of a modified Katritzky benzotriazole hemiaminal, which, upon deprotonation by n-butyllithium, participated in umpolung reactivity via 1,2-addition to tert-butyl 4-oxopiperidine-1-carboxylate (N-Boc-4-piperidone). Most notably, this reaction was developed as a robust plug-flow process that could be executed on multiple kilograms without the need for pilot-scale reaction vessels operating at low cryogenic temperatures. Treatment of the resulting tetrahedral intermediate with oxalic acid resulted in collapse to the corresponding 4-(2-fluorobenzoyl)-4-hydroxypiperidine, which was isolated as a solid via crystallization. The synthesis concluded with an optimized intramolecular SNAr reaction and final crystallization to generate tert-butyl 3-oxo-3H-spiro[benzofuran-2,4'-piperidine]-1'-carboxylate as a stable, high-quality intermediate suitable for further functionalization toward GDC-1971.
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Affiliation(s)
- Matthew M Pompeo
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Sean M Kelly
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Frédéric St-Jean
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Thomas M Bass
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Derek M Dalton
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Daniel Zell
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Chong Han
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Lauren E Sirois
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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Jin S, St-Jean O, Baltatu SI, Santhakumar V, Tomaszewski MJ. Rapid access to pyrido[1,2,5]triazepin-4-ones through intramolecular nucleophilic aromatic substitution. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.12.132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Varasi M, Thaler F, Abate A, Bigogno C, Boggio R, Carenzi G, Cataudella T, Dal Zuffo R, Fulco MC, Rozio MG, Mai A, Dondio G, Minucci S, Mercurio C. Discovery, Synthesis, and Pharmacological Evaluation of Spiropiperidine Hydroxamic Acid Based Derivatives as Structurally Novel Histone Deacetylase (HDAC) Inhibitors. J Med Chem 2011; 54:3051-64. [DOI: 10.1021/jm200146u] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Mario Varasi
- Genextra Group, DAC SRL, Via Adamello 16, 20139 Milan, Italy
- European Institute of Oncology, Via Adamello 16, 20139 Milan, Italy
| | - Florian Thaler
- European Institute of Oncology, Via Adamello 16, 20139 Milan, Italy
- Genextra Group, Congenia SRL, Via Adamello 16, 20139 Milan, Italy
| | - Agnese Abate
- Genextra Group, DAC SRL, Via Adamello 16, 20139 Milan, Italy
- European Institute of Oncology, Via Adamello 16, 20139 Milan, Italy
| | - Chiara Bigogno
- NiKem Research SRL, Via Zambeletti 25, 20021 Baranzate (MI), Italy
| | - Roberto Boggio
- Genextra Group, Congenia SRL, Via Adamello 16, 20139 Milan, Italy
| | - Giacomo Carenzi
- Genextra Group, DAC SRL, Via Adamello 16, 20139 Milan, Italy
- European Institute of Oncology, Via Adamello 16, 20139 Milan, Italy
| | | | | | - Maria Carmela Fulco
- Genextra Group, DAC SRL, Via Adamello 16, 20139 Milan, Italy
- European Institute of Oncology, Via Adamello 16, 20139 Milan, Italy
| | | | - Antonello Mai
- Dipartimento di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci Bolognetti, Università degli Studi di Roma “La Sapienza”, P.le A. Moro 5, 00185 Roma, Italy
| | - Giulio Dondio
- NiKem Research SRL, Via Zambeletti 25, 20021 Baranzate (MI), Italy
| | - Saverio Minucci
- European Institute of Oncology, Via Adamello 16, 20139 Milan, Italy
- Department of Biomolecular Sciences and Biotechnologies, University of Milan, Via Celoria, 26, 20133 Milan, Italy
| | - Ciro Mercurio
- Genextra Group, DAC SRL, Via Adamello 16, 20139 Milan, Italy
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Uto Y, Kiyotsuka Y, Ueno Y, Miyazawa Y, Kurata H, Ogata T, Deguchi T, Yamada M, Watanabe N, Konishi M, Kurikawa N, Takagi T, Wakimoto S, Kono K, Ohsumi J. Novel spiropiperidine-based stearoyl-CoA desaturase-1 inhibitors: Identification of 1′-{6-[5-(pyridin-3-ylmethyl)-1,3,4-oxadiazol-2-yl]pyridazin-3-yl}-5-(trifluoromethyl)-3,4-dihydrospiro[chromene-2,4′-piperidine]. Bioorg Med Chem Lett 2010; 20:746-54. [DOI: 10.1016/j.bmcl.2009.11.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2009] [Revised: 11/05/2009] [Accepted: 11/11/2009] [Indexed: 10/20/2022]
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