1
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Haas BC, Lim NK, Jermaks J, Gaster E, Guo MC, Malig TC, Werth J, Zhang H, Toste FD, Gosselin F, Miller SJ, Sigman MS. Enantioselective Sulfonimidamide Acylation via a Cinchona Alkaloid-Catalyzed Desymmetrization: Scope, Data Science, and Mechanistic Investigation. J Am Chem Soc 2024; 146:8536-8546. [PMID: 38480482 PMCID: PMC10990064 DOI: 10.1021/jacs.4c00374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024]
Abstract
Methods to access chiral sulfur(VI) pharmacophores are of interest in medicinal and synthetic chemistry. We report the desymmetrization of unprotected sulfonimidamides via asymmetric acylation with a cinchona-phosphinate catalyst. The desired products are formed in excellent yield and enantioselectivity with no observed bis-acylation. A data-science-driven approach to substrate scope evaluation was coupled to high throughput experimentation (HTE) to facilitate statistical modeling in order to inform mechanistic studies. Reaction kinetics, catalyst structural studies, and density functional theory (DFT) transition state analysis elucidated the turnover-limiting step to be the collapse of the tetrahedral intermediate and provided key insights into the catalyst-substrate structure-activity relationships responsible for the origin of the enantioselectivity. This study offers a reliable method for accessing enantioenriched sulfonimidamides to propel their application as pharmacophores and serves as an example of the mechanistic insight that can be gleaned from integrating data science and traditional physical organic techniques.
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Affiliation(s)
- Brittany C Haas
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Ngiap-Kie Lim
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - Janis Jermaks
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - Eden Gaster
- Department of Chemistry, Yale University, New Haven, Connecticut 06511, United States
| | - Melody C Guo
- Department of Chemistry, Yale University, New Haven, Connecticut 06511, United States
| | - Thomas C Malig
- Department of Synthetic Molecule Analytical Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - Jacob Werth
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Haiming Zhang
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - F Dean Toste
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Francis Gosselin
- Department of Synthetic Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - Scott J Miller
- Department of Chemistry, Yale University, New Haven, Connecticut 06511, United States
| | - Matthew S Sigman
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
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2
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Molinaro C, Kelly S, Tang A, Iding H, Stocker P, Linghu X, Gosselin F. Asymmetric Synthesis of N-Alkyl Amino Acids through a Biocatalytic Dynamic Kinetic Resolution of PEGylated N-Alkyl Amino Esters. Org Lett 2023; 25:8927-8931. [PMID: 38051775 DOI: 10.1021/acs.orglett.3c03784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
The first examples of a practical procedure for a lipase-catalyzed dynamic kinetic resolution of PEGylated N-alkyl amino esters is reported. This method allows for the preparation of a broad range of aromatic and aliphatic enantiomerically enriched N-alkyl unnatural amino acids in up to 98% yield and 99% ee. We have found that PEGylated esters have a significant solubility advantage and improved reactivity over traditional hydrophobic lipase substrates, thereby allowing for efficient and scalable dynamic kinetic resolution (DKR) under aqueous conditions.
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Affiliation(s)
- Carmela Molinaro
- Department of Small Molecule Process Chemistry, Genentech USA, Inc. 1 DNA Way, South San Francisco, California 94080, United States
| | - Sean Kelly
- Department of Small Molecule Process Chemistry, Genentech USA, Inc. 1 DNA Way, South San Francisco, California 94080, United States
| | - Allison Tang
- Department of Small Molecule Process Chemistry, Genentech USA, Inc. 1 DNA Way, South San Francisco, California 94080, United States
| | - Hans Iding
- Department of Process Chemistry & Catalysis, Synthetic Molecules Technical Development, F. Hoffmann-La Roche AG Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Patrik Stocker
- Department of Process Chemistry & Catalysis, Synthetic Molecules Technical Development, F. Hoffmann-La Roche AG Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Xin Linghu
- Department of Small Molecule Process Chemistry, Genentech USA, Inc. 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech USA, Inc. 1 DNA Way, South San Francisco, California 94080, United States
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3
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van Dijk L, Haas BC, Lim NK, Clagg K, Dotson JJ, Treacy SM, Piechowicz KA, Roytman VA, Zhang H, Toste FD, Miller SJ, Gosselin F, Sigman MS. Data Science-Enabled Palladium-Catalyzed Enantioselective Aryl-Carbonylation of Sulfonimidamides. J Am Chem Soc 2023; 145:20959-20967. [PMID: 37656964 DOI: 10.1021/jacs.3c06674] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Abstract
New methods for the general asymmetric synthesis of sulfonimidamides are of great interest due to their applications in medicinal chemistry, agrochemical discovery, and academic research. We report a palladium-catalyzed cross-coupling method for the enantioselective aryl-carbonylation of sulfonimidamides. Using data science techniques, a virtual library of calculated bisphosphine ligand descriptors was used to guide reaction optimization by effectively sampling the catalyst chemical space. The optimized conditions identified using this approach provided the desired product in excellent yield and enantioselectivity. As the next step, a data science-driven strategy was also used to explore a diverse set of aryl and heteroaryl iodides, providing key information about the scope and limitations of the method. Furthermore, we tested a range of racemic sulfonimidamides for compatibility of this coupling partner. The developed method offers a general and efficient strategy for accessing enantioenriched sulfonimidamides, which should facilitate their application in industrial and academic settings.
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Affiliation(s)
- Lucy van Dijk
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Brittany C Haas
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Ngiap-Kie Lim
- Department of Small Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - Kyle Clagg
- Department of Small Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - Jordan J Dotson
- Department of Small Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - Sean M Treacy
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Katarzyna A Piechowicz
- Department of Small Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - Vladislav A Roytman
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - F Dean Toste
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Scott J Miller
- Department of Chemistry, Yale University, New Haven, Connecticut 06511, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - Matthew S Sigman
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
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4
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Xu J, Lim NK, Timmerman JC, Shen J, Clagg K, Orcel U, Bigler R, Trachsel E, Meier R, White NA, Burkhard JA, Sirois LE, Tian Q, Angelaud R, Bachmann S, Zhang H, Gosselin F. Second-Generation Atroposelective Synthesis of KRAS G12C Covalent Inhibitor GDC-6036. Org Lett 2023; 25:3417-3422. [PMID: 37162129 DOI: 10.1021/acs.orglett.3c00961] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
A chromatography-free asymmetric synthesis of GDC-6036 (1) was achieved via a highly atroposelective Negishi coupling of aminopyridine 5 and quinazoline 6b catalyzed by 0.5 mol % [Pd(cin)Cl]2 and 1 mol % (R,R)-Chiraphite to afford the key intermediate (Ra)-3. An alkoxylation of (Ra)-3 with (S)-N-methylprolinol (4) and a global deprotection generates the penultimate heterobiaryl intermediate 2. A controlled acrylamide installation by stepwise acylation/sulfone elimination and final adipate salt formation and crystallization delivered high-purity GDC-6036 (1).
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Affiliation(s)
- Jie Xu
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Ngiap-Kie Lim
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jacob C Timmerman
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jeff Shen
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Kyle Clagg
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Ugo Orcel
- Department of Process Chemistry and Catalysis, F. Hoffmann-La Roche Ltd, Basel 4070, Switzerland
| | - Raphael Bigler
- Department of Process Chemistry and Catalysis, F. Hoffmann-La Roche Ltd, Basel 4070, Switzerland
| | - Etienne Trachsel
- Department of Process Chemistry and Catalysis, F. Hoffmann-La Roche Ltd, Basel 4070, Switzerland
| | - Roland Meier
- Department of Solid State Sciences, F. Hoffmann-La Roche Ltd, Basel 4070, Switzerland
| | - Nicholas A White
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Johannes A Burkhard
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Lauren E Sirois
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Qingping Tian
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Remy Angelaud
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Stephan Bachmann
- Department of Process Chemistry and Catalysis, F. Hoffmann-La Roche Ltd, Basel 4070, Switzerland
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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5
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Stumpf A, Xu D, Ranjan R, Angelaud R, Gosselin F. A Convergent Synthesis of HPK1 Inhibitor GNE-6893 via Palladium-Catalyzed Functionalization of a Tetrasubstituted Isoquinoline. Org Process Res Dev 2023. [DOI: 10.1021/acs.oprd.2c00384] [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: 03/03/2023]
Affiliation(s)
- Andreas Stumpf
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Di Xu
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rohit Ranjan
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Remy Angelaud
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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6
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Dotson JJ, van Dijk L, Timmerman JC, Grosslight S, Walroth RC, Gosselin F, Püntener K, Mack KA, Sigman MS. Data-Driven Multi-Objective Optimization Tactics for Catalytic Asymmetric Reactions Using Bisphosphine Ligands. J Am Chem Soc 2023; 145:110-121. [PMID: 36574729 DOI: 10.1021/jacs.2c08513] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Optimization of the catalyst structure to simultaneously improve multiple reaction objectives (e.g., yield, enantioselectivity, and regioselectivity) remains a formidable challenge. Herein, we describe a machine learning workflow for the multi-objective optimization of catalytic reactions that employ chiral bisphosphine ligands. This was demonstrated through the optimization of two sequential reactions required in the asymmetric synthesis of an active pharmaceutical ingredient. To accomplish this, a density functional theory-derived database of >550 bisphosphine ligands was constructed, and a designer chemical space mapping technique was established. The protocol used classification methods to identify active catalysts, followed by linear regression to model reaction selectivity. This led to the prediction and validation of significantly improved ligands for all reaction outputs, suggesting a general strategy that can be readily implemented for reaction optimizations where performance is controlled by bisphosphine ligands.
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Affiliation(s)
- Jordan J Dotson
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Lucy van Dijk
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Jacob C Timmerman
- Department of Small Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - Samantha Grosslight
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Richard C Walroth
- Department of Small Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - Kurt Püntener
- Synthetic Molecules Technical Development, Process Chemistry & Catalysis, F. Hoffmann-La Roche Limited, CH-4070 Basel, Switzerland
| | - Kyle A Mack
- Department of Small Molecule Process Chemistry, Genentech, Inc., South San Francisco, California 94080, United States
| | - Matthew S Sigman
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
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7
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Xu J, Grosslight S, Mack KA, Nguyen SC, Clagg K, Lim NK, Timmerman JC, Shen J, White NA, Sirois LE, Han C, Zhang H, Sigman MS, Gosselin F. Atroposelective Negishi Coupling Optimization Guided by Multivariate Linear Regression Analysis: Asymmetric Synthesis of KRAS G12C Covalent Inhibitor GDC-6036. J Am Chem Soc 2022; 144:20955-20963. [DOI: 10.1021/jacs.2c09917] [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: 11/06/2022]
Affiliation(s)
- Jie Xu
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Samantha Grosslight
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Kyle A. Mack
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Sierra C. Nguyen
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Kyle Clagg
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Ngiap-Kie Lim
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jacob C. Timmerman
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jeff Shen
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Nicholas A. White
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Lauren E. Sirois
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Chong Han
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Matthew S. Sigman
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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8
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Koenig SG, Angelaud R, Crittenden CM, Kurita K, Russell DJ, Marcoux JF, Matt T, Gosselin F. Development of Dual Practical Manufacturing Routes to Cognate Pyrrolobenzodiazepine-Based Linker-Drugs. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00129] [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: 11/29/2022]
Affiliation(s)
- Stefan G. Koenig
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rémy Angelaud
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Christopher M. Crittenden
- Department of Small Molecule Analytical Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Kenji Kurita
- Department of Small Molecule Analytical Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - David J. Russell
- Department of Small Molecule Analytical Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jean-Francois Marcoux
- Department of Manufacturing and Science Technology, F. Hoffmann-La Roche Ltd, Viaduktstrasse 31, 4051 Basel, Switzerland
| | - Thomas Matt
- Chemical R&D Department, Cerbios Pharma SA, Via Figino 6, 6917 Barbengo/Lugano, Switzerland
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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9
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Molinaro C, Kawasaki Y, Wanyoike G, Nishioka T, Yamamoto T, Snedecor B, Robinson SJ, Gosselin F. Engineered Cytochrome P450-Catalyzed Oxidative Biaryl Coupling Reaction Provides a Scalable Entry into Arylomycin Antibiotics. J Am Chem Soc 2022; 144:14838-14845. [PMID: 35905381 DOI: 10.1021/jacs.2c06019] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report herein the first example of a cytochrome P450-catalyzed oxidative carbon-carbon coupling process for a scalable entry into arylomycin antibiotic cores. Starting from wild-type hydroxylating cytochrome P450 enzymes and engineered Escherichia coli, a combination of enzyme engineering, random mutagenesis, and optimization of reaction conditions generated a P450 variant that affords the desired arylomycin core 2d in 84% assay yield. Furthermore, this process was demonstrated as a viable route for the production of the arylomycin antibiotic core on the gram scale. Finally, this new entry affords a viable, scalable, and practical route for the synthesis of novel Gram-negative antibiotics.
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Affiliation(s)
- Carmela Molinaro
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Yukie Kawasaki
- Applied Microbiotechnology Department, MicroBiopharm Japan Co. Ltd., 156 Nakagawara, Kiyosu, Aichi 452-0915, Japan
| | - George Wanyoike
- Production Technology Department, MicroBiopharm Japan Co. Ltd., 1808 Nakaizumi, Iwata, Shizuoka 438-0078, Japan
| | - Taiki Nishioka
- Applied Microbiotechnology Department, MicroBiopharm Japan Co. Ltd., 156 Nakagawara, Kiyosu, Aichi 452-0915, Japan
| | - Tsuyoshi Yamamoto
- Applied Microbiotechnology Department, MicroBiopharm Japan Co. Ltd., 156 Nakagawara, Kiyosu, Aichi 452-0915, Japan
| | - Brad Snedecor
- Department of Cell Culture and Bioprocess Operations, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Sarah J Robinson
- Department of Discovery Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
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10
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St-Jean F, Angelaud R, Bachmann S, Carrera DE, Remarchuk T, Piechowicz KA, Niedermann K, Iding H, Meier R, Hou H, Sirois LE, Xu J, Olbrich M, Rege P, Guillemot-Plass M, Gosselin F. Stereoselective Synthesis of the IDO Inhibitor Navoximod. J Org Chem 2022; 87:4955-4960. [PMID: 35317556 DOI: 10.1021/acs.joc.1c02994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly efficient asymmetric synthesis of the IDO inhibitor navoximod, featuring the stereoselective installation of two relative and two absolute stereocenters from an advanced racemic intermediate, is described. The stereocenters were set via a crystallization-induced dynamic resolution along with two selective ketone reductions: one via a biocatalytic ketoreductase transformation and one via substrate-controlled hydride delivery from LiAlH(Ot-Bu)3. Following this strategy, navoximod was synthesized in 10 steps from 2-fluorobenzaldehyde and isolated in 23% overall yield with 99.7% ee and high purity.
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Affiliation(s)
- Frédéric St-Jean
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rémy Angelaud
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Stephan Bachmann
- Synthetic Molecules Technical Development, F. Hoffmann-La Roche Ltd., Grenzacherstraße 124, 4070 Basel, Switzerland
| | - Diane E Carrera
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Travis Remarchuk
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Katarzyna A Piechowicz
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Katrin Niedermann
- Synthetic Molecules Technical Development, F. Hoffmann-La Roche Ltd., Grenzacherstraße 124, 4070 Basel, Switzerland
| | - Hans Iding
- Synthetic Molecules Technical Development, F. Hoffmann-La Roche Ltd., Grenzacherstraße 124, 4070 Basel, Switzerland
| | - Roland Meier
- Synthetic Molecules Technical Development, F. Hoffmann-La Roche Ltd., Grenzacherstraße 124, 4070 Basel, Switzerland
| | - Haiyun Hou
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Lauren E Sirois
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jie Xu
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Martin Olbrich
- Synthetic Molecules Technical Development, F. Hoffmann-La Roche Ltd., Grenzacherstraße 124, 4070 Basel, Switzerland
| | - Pankaj Rege
- Synthetic Molecules Technical Development, F. Hoffmann-La Roche Ltd., Grenzacherstraße 124, 4070 Basel, Switzerland
| | - Maud Guillemot-Plass
- Synthetic Molecules Technical Development, F. Hoffmann-La Roche Ltd., Grenzacherstraße 124, 4070 Basel, Switzerland
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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11
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Hoffmann-Emery F, Niedermann K, Rege PD, Konrath M, Lautz C, Kraft AK, Steiner C, Bliss F, Hell A, Fischer R, Carrera DE, Beaudry D, Angelaud R, Malhotra S, Gosselin F. Development of a Practical and Greener Process for the Dual Leucine Zipper Kinase Inhibitor GDC-0134 Comprising Two SNAr Reactions, Oxidation and Suzuki Coupling. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.1c00389] [Citation(s) in RCA: 2] [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: 12/13/2022]
Affiliation(s)
- Fabienne Hoffmann-Emery
- Synthetic Molecules Technical Development, F. Hoffmann-la Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - Katrin Niedermann
- Synthetic Molecules Technical Development, F. Hoffmann-la Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - Pankaj D. Rege
- Synthetic Molecules Technical Development, F. Hoffmann-la Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - Manuel Konrath
- Synthetic Molecules Technical Development, F. Hoffmann-la Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - Christian Lautz
- Synthetic Molecules Technical Development, F. Hoffmann-la Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - Anne Katrin Kraft
- Synthetic Molecules Technical Development, F. Hoffmann-la Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - Carine Steiner
- Synthetic Molecules Technical Development, F. Hoffmann-la Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - Fritz Bliss
- Synthetic Molecules Technical Development, F. Hoffmann-la Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - André Hell
- Synthetic Molecules Technical Development, F. Hoffmann-la Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - Rolf Fischer
- Synthetic Molecules Technical Development, F. Hoffmann-la Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - Diane E. Carrera
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Danial Beaudry
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Remy Angelaud
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Sushant Malhotra
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
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12
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Zell D, Kingston C, Jermaks J, Smith SR, Seeger N, Wassmer J, Sirois LE, Han C, Zhang H, Sigman MS, Gosselin F. Stereoconvergent and -divergent Synthesis of Tetrasubstituted Alkenes by Nickel-Catalyzed Cross-Couplings. J Am Chem Soc 2021; 143:19078-19090. [PMID: 34735129 DOI: 10.1021/jacs.1c08399] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report the development of a method to diastereoselectively access tetrasubstituted alkenes via nickel-catalyzed Suzuki-Miyaura cross-couplings of enol tosylates and boronic acid esters. Either diastereomeric product was selectively accessed from a mixture of enol tosylate starting material diastereomers in a convergent reaction by judicious choice of the ligand and reaction conditions. A similar protocol also enabled a divergent synthesis of each product isomer from diastereomerically pure enol tosylates. Notably, high-throughput optimization of the monophosphine ligands was guided by chemical space analysis of the kraken library to ensure a diverse selection of ligands was examined. Stereoelectronic analysis of the results provided insight into the requirements for reactive and selective ligands in this transformation. The synthetic utility of the optimized catalytic system was then probed in the stereoselective synthesis of various tetrasubstituted alkenes, with yields up to 94% and diastereomeric ratios up to 99:1 Z/E and 93:7 E/Z observed. Moreover, a detailed computational analysis and experimental mechanistic studies provided key insights into the nature of the underlying isomerization process impacting selectivity in the cross-coupling.
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Affiliation(s)
- Daniel Zell
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Cian Kingston
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Janis Jermaks
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Sleight R Smith
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Natalie Seeger
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Jana Wassmer
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Lauren E Sirois
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Chong Han
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Matthew S Sigman
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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13
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Stumpf A, Burkhard J, Xu D, Marx A, Lao D, Ochsenbein M, Ranjan R, Angelaud R, Gosselin F. Efficient, Protecting Group Free Kilogram-Scale Synthesis of the JAK1 Inhibitor GDC-4379. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.1c00302] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andreas Stumpf
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Johannes Burkhard
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Di Xu
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Andreas Marx
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - David Lao
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Miriam Ochsenbein
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rohit Ranjan
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Remy Angelaud
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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14
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Xu J, Chung CK, McClory A, Mack KA, Dalziel ME, Fettes A, Clagg K, Lim NK, Wuitschik G, Jenny C, Finet L, Kammerer M, Zhang H, Angelaud R, Gosselin F. Efficient Manufacturing Process for the Selective Estrogen Receptor Degrader GDC-9545 (Giredestrant) via a Crystallization-Driven Diastereoselective Pictet–Spengler Condensation. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.1c00263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jie Xu
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Cheol K. Chung
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Andrew McClory
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Kyle A. Mack
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Michael E. Dalziel
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Alec Fettes
- Process Chemistry and Catalysis, Small Molecules Technical Development, F. Hoffmann-La Roche Ltd., Grenzacherstrasse, 4070 Basel, Switzerland
| | - Kyle Clagg
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Ngiap-Kie Lim
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Georg Wuitschik
- Process Chemistry and Catalysis, Small Molecules Technical Development, F. Hoffmann-La Roche Ltd., Grenzacherstrasse, 4070 Basel, Switzerland
| | - Christian Jenny
- Process Chemistry and Catalysis, Small Molecules Technical Development, F. Hoffmann-La Roche Ltd., Grenzacherstrasse, 4070 Basel, Switzerland
| | - Laure Finet
- Process Chemistry and Catalysis, Small Molecules Technical Development, F. Hoffmann-La Roche Ltd., Grenzacherstrasse, 4070 Basel, Switzerland
| | - Michael Kammerer
- Process Chemistry and Catalysis, Small Molecules Technical Development, F. Hoffmann-La Roche Ltd., Grenzacherstrasse, 4070 Basel, Switzerland
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rémy Angelaud
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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15
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Xu J, Clagg K, Lim NK, Wuitschik G, Chung CK, Zhang H, Gosselin F. First-Generation Asymmetric Synthesis of the Selective Estrogen Receptor Degrader GDC-9545 (Giredestrant) Featuring a Highly Efficient Pictet–Spengler Reaction and a C–N Coupling Reaction. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.1c00262] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Jie Xu
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Kyle Clagg
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Ngiap-Kie Lim
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Georg Wuitschik
- Process Chemistry and Catalysis, Small Molecules Technical Development, F. Hoffmann-La Roche Ltd., Grenzacherstrasse, 4070 Basel, Switzerland
| | - Cheol K. Chung
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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16
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Zell D, Dalziel ME, Carrera DE, Stumpf A, Bachmann S, Mercado-Marin E, Koenig SG, Zhang H, Gosselin F. An Efficient Second-Generation Manufacturing Process for the pan-RAF Inhibitor Belvarafenib. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.1c00277] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Daniel Zell
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Michael E. Dalziel
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Diane E. Carrera
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Andreas Stumpf
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Stephan Bachmann
- Department of Process Chemistry and Catalysis, F. Hoffmann-La Roche Ltd., Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Eduardo Mercado-Marin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Stefan G. Koenig
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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17
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Koenig SG, Green KL, Müller B, Sowell CG, Askin D, Gosselin F. Development of a practical synthesis to PI3K α-selective inhibitor GDC-0326. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131840] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Goyon A, Masui C, Sirois LE, Han C, Yehl P, Gosselin F, Zhang K. Achiral-Chiral Two-Dimensional Liquid Chromatography Platform to Support Automated High-Throughput Experimentation in the Field of Drug Development. Anal Chem 2020; 92:15187-15193. [PMID: 33142065 DOI: 10.1021/acs.analchem.0c03754] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Automated high-throughput experimentation (HTE) is a powerful tool for scientists to explore and optimize chemical transformations by simultaneously screening yield, stereoselectivity, and impurity profiles. To analyze the HTE samples, high-throughput analysis (HTA) platforms must be fast, accurate, generic, and specific at the same time. A large amount of high-quality data is critical for the success of machine learning models in the era of big data. Conventional chiral liquid chromatography-mass spectrometry (LC/MS) HTE methods are hampered by compound co-eluting, possible ion suppression, and limited chiral column lifetime in the presence of crude reaction mixtures or complex sample matrices. To overcome these limitations, a generic and fast achiral-chiral heart-cutting two-dimensional (2D)-LC method has been developed to determine both the yield and stereoselectivity of chemical transformations within a 10 min run time. Successful implementation of the 2D-LC HTA platform in a routine drug development environment was achieved for real-world project support, with the analysis so far of over 2000 reaction mixtures prepared in the 96-well plate format. Excellent performance of the method was demonstrated by relative standard deviation (RSD) lower than 0.83% for the 1D and 2D retention times, and determination coefficients higher than 0.99. The presented HTA 2D-LC platform has had a significant impact on drug development by analyzing the HTE samples rapidly with unambiguous peak tracking and providing a robust approach for accurately generating a large amount of high-quality data in a short time.
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19
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Lim NK, Zhang H, Sowell CG, Gosselin F. A fit for purpose synthesis of Bruton’s tyrosine kinase inhibitor GDC-0852. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Xu J, Carrera DE, Beaudry D, Siu M, Huestis MP, Liu W, Angelaud R, Gosselin F. Fit-for-purpose synthesis of dual leucine zipper kinase (DLK) inhibitor GNE-834. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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White NA, Clagg K, Sirois LE, Lim NK, Nack WA, O’Shea PD, Zhang H, Gosselin F. Practical Synthesis of a Stable Precursor for Positron Emission Tomography Imaging Agent 18F-GTP1. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nicholas A. White
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Kyle Clagg
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Lauren E. Sirois
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Ngiap-Kie Lim
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - William A. Nack
- Exemplify BioPharma, 3000 Eastpark Boulevard, Suite 500-A, Cranbury, New Jersey 08512, United States
| | - Paul D. O’Shea
- Exemplify BioPharma, 3000 Eastpark Boulevard, Suite 500-A, Cranbury, New Jersey 08512, United States
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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22
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Abstract
The concise early development route to the Nav1.7 inhibitor GDC-0310 is described. The active pharmaceutical ingredient (API) contains one stereocenter, which was obtained with high enantiomeric excess (>99:1) by using an SN2 displacement approach to connect two intermediates: a chiral benzyl alcohol and a piperidine. The synthesis of the piperidine building block proceeded via a regioselective SNAr reaction on 1-chloro-2,4-difluorobenzene by N-Boc-4-piperidinemethanol, followed by installation of the methyl ester group by electrophilic aromatic bromination and a palladium-catalyzed alkoxycarbonylation. A subsequent Suzuki–Miyaura cross-coupling reaction was then telescoped directly into cleavage of the Boc group to provide the advanced piperidine intermediate. The key feature of the synthesis is the highly selective SN2 displacement of the chiral mesylate of (R)-1-(3,5-dichlorophenyl)ethan-1-ol with the piperidine intermediate, followed by a chiral purity upgrade via the corresponding (1S)-(+)-camphorsulfonic acid salt. After standard hydrolysis of the methyl ester and CDI mediated amidation to couple the resulting acid with methanesulfonamide, enantiomerically pure GDC-0310 was obtained in high overall yield (37%) on a 6.5 kilogram scale.
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Affiliation(s)
- Andreas Stumpf
- Department of Small Molecule Process Chemistry, Genentech Inc
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23
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Sirois LE, Lao D, Xu J, Angelaud R, Tso J, Scott B, Chakravarty P, Malhotra S, Gosselin F. Process Development Overcomes a Challenging Pd-Catalyzed C–N Coupling for the Synthesis of RORc Inhibitor GDC-0022. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Bigler R, Mack KA, Shen J, Tosatti P, Han C, Bachmann S, Zhang H, Scalone M, Pfaltz A, Denmark SE, Hildbrand S, Gosselin F. Asymmetric Hydrogenation of Unfunctionalized Tetrasubstituted Acyclic Olefins. Angew Chem Int Ed Engl 2020; 59:2844-2849. [PMID: 31794118 DOI: 10.1002/anie.201912640] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Indexed: 12/31/2022]
Abstract
Asymmetric hydrogenation has evolved as one of the most powerful tools to construct stereocenters. However, the asymmetric hydrogenation of unfunctionalized tetrasubstituted acyclic olefins remains the pinnacle of asymmetric synthesis and an unsolved challenge. We report herein the discovery of an iridium catalyst for the first, generally applicable, highly enantio- and diastereoselective hydrogenation of such olefins and the mechanistic insights of the reaction. The power of this chemistry is demonstrated by the successful hydrogenation of a wide variety of electronically and sterically diverse olefins in excellent yield and high enantio- and diastereoselectivity.
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Affiliation(s)
- Raphael Bigler
- Pharmaceutical Division, Small Molecules Technical Development, Department of Process Chemistry and Catalysis, F. Hoffmann-La Roche Ltd, 4070, Basel, Switzerland
| | - Kyle A Mack
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Jeff Shen
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Paolo Tosatti
- Pharmaceutical Division, Small Molecules Technical Development, Department of Process Chemistry and Catalysis, F. Hoffmann-La Roche Ltd, 4070, Basel, Switzerland
| | - Chong Han
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Stephan Bachmann
- Pharmaceutical Division, Small Molecules Technical Development, Department of Process Chemistry and Catalysis, F. Hoffmann-La Roche Ltd, 4070, Basel, Switzerland
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Michelangelo Scalone
- Pharmaceutical Division, Small Molecules Technical Development, Department of Process Chemistry and Catalysis, F. Hoffmann-La Roche Ltd, 4070, Basel, Switzerland
| | - Andreas Pfaltz
- Department of Chemistry, University of Basel, 4056, Basel, Switzerland
| | - Scott E Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL, 61801, USA
| | - Stefan Hildbrand
- Pharmaceutical Division, Small Molecules Technical Development, Department of Process Chemistry and Catalysis, F. Hoffmann-La Roche Ltd, 4070, Basel, Switzerland
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA
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25
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Bigler R, Mack KA, Shen J, Tosatti P, Han C, Bachmann S, Zhang H, Scalone M, Pfaltz A, Denmark SE, Hildbrand S, Gosselin F. Asymmetric Hydrogenation of Unfunctionalized Tetrasubstituted Acyclic Olefins. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201912640] [Citation(s) in RCA: 4] [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: 01/08/2023]
Affiliation(s)
- Raphael Bigler
- Pharmaceutical DivisionSmall Molecules Technical DevelopmentDepartment of Process Chemistry and CatalysisF. Hoffmann-La Roche Ltd 4070 Basel Switzerland
| | - Kyle A. Mack
- Department of Small Molecule Process ChemistryGenentech, Inc. 1 DNA Way South San Francisco CA 94080 USA
| | - Jeff Shen
- Department of Small Molecule Process ChemistryGenentech, Inc. 1 DNA Way South San Francisco CA 94080 USA
| | - Paolo Tosatti
- Pharmaceutical DivisionSmall Molecules Technical DevelopmentDepartment of Process Chemistry and CatalysisF. Hoffmann-La Roche Ltd 4070 Basel Switzerland
| | - Chong Han
- Department of Small Molecule Process ChemistryGenentech, Inc. 1 DNA Way South San Francisco CA 94080 USA
| | - Stephan Bachmann
- Pharmaceutical DivisionSmall Molecules Technical DevelopmentDepartment of Process Chemistry and CatalysisF. Hoffmann-La Roche Ltd 4070 Basel Switzerland
| | - Haiming Zhang
- Department of Small Molecule Process ChemistryGenentech, Inc. 1 DNA Way South San Francisco CA 94080 USA
| | - Michelangelo Scalone
- Pharmaceutical DivisionSmall Molecules Technical DevelopmentDepartment of Process Chemistry and CatalysisF. Hoffmann-La Roche Ltd 4070 Basel Switzerland
| | - Andreas Pfaltz
- Department of ChemistryUniversity of Basel 4056 Basel Switzerland
| | - Scott E. Denmark
- Roger Adams LaboratoryDepartment of ChemistryUniversity of Illinois Urbana IL 61801 USA
| | - Stefan Hildbrand
- Pharmaceutical DivisionSmall Molecules Technical DevelopmentDepartment of Process Chemistry and CatalysisF. Hoffmann-La Roche Ltd 4070 Basel Switzerland
| | - Francis Gosselin
- Department of Small Molecule Process ChemistryGenentech, Inc. 1 DNA Way South San Francisco CA 94080 USA
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26
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White NA, Clagg K, Sirois LE, Mack KA, Al-Sayah MA, Nack WA, O'Shea PD, Zhang H, Gosselin F. Phosphoramidates as Steering Elements for Highly Selective Access to Complementary Imidazo[1,2- a]pyrimidine Isomers. Org Lett 2019; 21:9527-9531. [PMID: 31738563 DOI: 10.1021/acs.orglett.9b03702] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report that selective N-phosphorylation of aminoimidazoles results in a key steering element that controls isomeric selectivity in the condensation of β-ethoxy acrylamides and aminoimidazoles to furnish imidazo[1,2-a]pyrimidines. We identified conditions that provide highly selective (99:1) phosphorylation at the endo- or exocyclic nitrogen. Either the 2-amino or 4-amino isomer of the (benzo)imidazo[1,2-a]pyrimidine products could be isolated in 64-95% yield. Mass spectrometric analysis and computational studies give insight into the mechanism of this exceptionally selective transformation.
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Affiliation(s)
- Nicholas A White
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Kyle Clagg
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Lauren E Sirois
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Kyle A Mack
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Mohammad A Al-Sayah
- Department of Small Molecule Analytical Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - William A Nack
- Exemplify BioPharma , 3000 Eastpark Boulevard, Suite 500-A , Cranbury , New Jersey 08512 , United States
| | - Paul D O'Shea
- Exemplify BioPharma , 3000 Eastpark Boulevard, Suite 500-A , Cranbury , New Jersey 08512 , United States
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
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27
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Wong N, Petronijević F, Hong AY, Linghu X, Kelly SM, Hou H, Cravillion T, Lim NK, Robinson SJ, Han C, Molinaro C, Sowell CG, Gosselin F. Stereocontrolled Synthesis of Arylomycin-Based Gram-Negative Antibiotic GDC-5338. Org Lett 2019; 21:9099-9103. [PMID: 31668077 DOI: 10.1021/acs.orglett.9b03481] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
We report herein an efficient, stereocontrolled, and chromatography-free synthesis of the novel broad spectrum antibiotic GDC-5338. The route features the construction of a functionalized tripeptide backbone, a high-yielding macrocyclization via a Pd-catalyzed Suzuki-Miyaura reaction, and the late-stage elaboration of key amide bonds with minimal stereochemical erosion. Through extensive reaction development and analytical understanding, these key advancements allowed the preparation of GDC-5338 in 17 steps, 15% overall yield, >99 A % HPLC, and >99:1 dr.
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Affiliation(s)
- Nicholas Wong
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Filip Petronijević
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Allen Y Hong
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Xin Linghu
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Sean M Kelly
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Haiyun Hou
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Theresa Cravillion
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Ngiap-Kie Lim
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Sarah J Robinson
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Chong Han
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Carmela Molinaro
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - C Gregory Sowell
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
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Abstract
A highly regioselective Mg-catalyzed alkylation of 3-substituted pyrazoles has been developed to provide N2-alkylated regioisomers. Using α-bromoacetates and acetamides as alkylating agents, this new method was applied to a variety of 3-substituted and 3,4-disubstituted pyrazoles to produce the N2-alkylated products with high regioselectivities ranging from 76:24 to 99:1 and 44–90% yields.
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Affiliation(s)
- Di Xu
- Department of Small Molecule Process Chemistry, Genentech Inc
| | - Lena Frank
- Department of Small Molecule Process Chemistry, Genentech Inc
| | - Tina Nguyen
- Department of Small Molecule Analytical Chemistry, Genentech Inc
| | - Andreas Stumpf
- Department of Small Molecule Process Chemistry, Genentech Inc
| | - David Russell
- Department of Small Molecule Analytical Chemistry, Genentech Inc
| | - Remy Angelaud
- Department of Small Molecule Process Chemistry, Genentech Inc
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29
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Stumpf A, Cheng ZK, Beaudry D, Angelaud R, Gosselin F. Improved Synthesis of the Nav1.7 Inhibitor GDC-0276 via a Highly Regioselective SNAr Reaction. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00082] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Andreas Stumpf
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Zhigang Ken Cheng
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Danial Beaudry
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Remy Angelaud
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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30
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Han C, Alabanza LM, Kelly SM, Orsi DL, Gosselin F, Altman RA. BBDFA: A Practical Reagent for Trifluoromethylation of Allylic and Benzylic Alcohols on Preparative Scale. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Chong Han
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Lady Mae Alabanza
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Sean M. Kelly
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Douglas L. Orsi
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Ryan A. Altman
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, Kansas 66045, United States
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31
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St-Jean F, Remarchuk T, Angelaud R, Carrera DE, Beaudry D, Malhotra S, McClory A, Kumar A, Ohlenbusch G, Schuster AM, Gosselin F. Manufacture of the PI3K β-Sparing Inhibitor Taselisib. Part 2: Development of a Highly Efficient and Regioselective Late-Stage Process. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Frédéric St-Jean
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Travis Remarchuk
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rémy Angelaud
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Diane E. Carrera
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Danial Beaudry
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Sushant Malhotra
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Andrew McClory
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Archana Kumar
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Gerd Ohlenbusch
- Small Molecules Technical Development PTDC-C, F. Hoffmann-La Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - Andreas M. Schuster
- Small Molecules Technical Development PTDC-C, F. Hoffmann-La Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
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32
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Zhang H, Li BX, Wong B, Stumpf A, Sowell CG, Gosselin F. Convergent Synthesis of PI3K Inhibitor GDC-0908 Featuring Palladium-Catalyzed Direct C-H Arylation toward Dihydrobenzothienooxepines. J Org Chem 2018; 84:4796-4802. [PMID: 30543748 DOI: 10.1021/acs.joc.8b02751] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A practical convergent synthesis of PI3K inhibitor GDC-0908 (1) is described. The process features a dihydrobenzothienooxepine formation via palladium-catalyzed intramolecular direct C-H arylation and a Negishi coupling to construct the key C-C bonds. We further developed a general synthesis of dihydrobenzothienooxepines in good to excellent yields via palladium-catalyzed intramolecular direct C-H arylation, which tolerates both electronically and sterically diverse substituents on the phenyl ring.
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Affiliation(s)
- Haiming Zhang
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Beryl X Li
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Brian Wong
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Andreas Stumpf
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - C Gregory Sowell
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
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33
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St-Jean F, Piechowicz KA, Sirois LE, Angelaud R, Gosselin F. Study of a Competing Hydrodefluorination Reaction During the Directed ortho-Lithiation/Borylation of 2-Fluorobenzaldehyde. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Frédéric St-Jean
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Katarzyna A. Piechowicz
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Lauren E. Sirois
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rémy Angelaud
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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34
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Abstract
Two practical entries to arylomycin antibiotics core structures are investigated. In route A, the activation of l-Hpg for the key macrolactamization step is achieved in 89% yield in the presence of unprotected phenol and amine functionalities. Alternatively, a propanephosphonic acid anhydride (T3P)-promoted coupling between thel-Tyr and l-Ala moieties in route B led to a facile macrolactamization in 68% yield with a marked reduction in competing oligomerization.
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Affiliation(s)
- Ngiap-Kie Lim
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Xin Linghu
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Nicholas Wong
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - C Gregory Sowell
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry , Genentech, Inc. , 1 DNA Way , South San Francisco , California 94080 , United States
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35
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Gosselin F, Mathieu L, Block JC, Carteret C, Muhr H, Jorand FPA. Assessment of an anti-scale low-frequency electromagnetic field device on drinking water biofilms. Biofouling 2018; 34:1020-1031. [PMID: 30612474 DOI: 10.1080/08927014.2018.1532998] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 10/01/2018] [Accepted: 10/02/2018] [Indexed: 06/09/2023]
Abstract
Low intensity and very low-frequency electromagnetic fields (EMF) used for preventing scaling in water distribution systems were tested for the first time for their potential impact on drinking water biofilms. The assays were carried out in laboratory-scale flow-through reactors that mimic water distribution systems. The drinking water biofilms were not directly exposed to the core of the EMF generator and only subjected to waterborne electromagnetic waves. The density and chlorine susceptibility of nascent or mature biofilms grown under exposure to EMF were evaluated in soft and hard water. This EMF treatment was able to modify CaCO3 crystallization but it did not significantly affect biofilms. Indeed, over all the tested conditions, there was no significant change in cell number, or in the integrity of the cells (membrane, culturability), and no measurable effect of chlorine on the biofilm.
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Affiliation(s)
- F Gosselin
- a CNRS, LCPME , Université de Lorraine , Nancy , France
| | - L Mathieu
- b LCPME , EPHE, PSL Research University , Nancy , France
| | - J-C Block
- a CNRS, LCPME , Université de Lorraine , Nancy , France
| | - C Carteret
- a CNRS, LCPME , Université de Lorraine , Nancy , France
| | - H Muhr
- c CNRS, LRGP , Université de Lorraine , Nancy , France
| | - F P A Jorand
- a CNRS, LCPME , Université de Lorraine , Nancy , France
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36
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Dupuis-Roy N, Faghel-Soubeyrand S, Gosselin F. Time course of the use of chromatic and achromatic facial information for sex categorization. Vision Res 2018; 157:36-43. [PMID: 30201473 DOI: 10.1016/j.visres.2018.08.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 07/29/2018] [Accepted: 08/29/2018] [Indexed: 11/27/2022]
Abstract
The most useful facial features for sex categorization are the eyes, the eyebrows, and the mouth. Dupuis-Roy et al. reported a large positive correlation between the use of the mouth region and rapid correct answers [Journal of Vision 9 (2009) 1-8]. Given the chromatic information in this region, they hypothesized that the extraction of chromatic and achromatic cues may have different time courses. Here, we tested this hypothesis directly: 110 participants categorized the sex of 300 face images whose chromatic and achromatic content was partially revealed through time (200 ms) and space using randomly located spatio-temporal Gaussian apertures (i.e. the Bubbles technique). This also allowed us to directly compare, for the first time, the relative importance of chromatic and achromatic facial cues for sex categorization. Results showed that face-sex categorization relies mostly on achromatic (luminance) information concentrated in the eye and eyebrow regions, especially the left eye and eyebrow. Additional analyses indicated that chromatic information located in the mouth/philtrum region was used earlier-peaking as early as 35 ms after stimulus onset-than achromatic information in the eye regions-peaking between 165 and 176 ms after stimulus onset-as was speculated by Dupuis-Roy et al. A non-linear analysis failed to support Yip and Sinha's proposal that processing of chromatic variations can improve subsequent processing of achromatic spatial cues, possibly via surface segmentation [Perception 31 (2002) 995-1003]. Instead, we argue that the brain prioritizes chromatic information to compensate for the sluggishness of chromatic processing in early visual areas, and allow chromatic and achromatic information to reach higher-level visual areas simultaneously.
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Affiliation(s)
- N Dupuis-Roy
- Département de psychologie, Université de Montréal, Canada
| | | | - F Gosselin
- Département de psychologie, Université de Montréal, Canada.
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37
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Savage S, McClory A, Zhang H, Cravillion T, Lim NK, Masui C, Robinson SJ, Han C, Ochs C, Rege PD, Gosselin F. Synthesis of Selective Estrogen Receptor Degrader GDC-0810 via Stereocontrolled Assembly of a Tetrasubstituted All-Carbon Olefin. J Org Chem 2018; 83:11571-11576. [DOI: 10.1021/acs.joc.8b01551] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | - Christoph Ochs
- Department of Process Chemistry and Catalysis, F. Hoffmann-La Roche AG, Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Pankaj D. Rege
- Department of Process Chemistry and Catalysis, F. Hoffmann-La Roche AG, Grenzacherstrasse 124, CH-4070 Basel, Switzerland
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38
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Zhang H, Cravillion T, Lim NK, Tian Q, Beaudry D, Defreese JL, Fettes A, James P, Linder D, Malhotra S, Han C, Angelaud R, Gosselin F. Development of an Efficient Manufacturing Process for Reversible Bruton’s Tyrosine Kinase Inhibitor GDC-0853. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00134] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Haiming Zhang
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Theresa Cravillion
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Ngiap-Kie Lim
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Qingping Tian
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Danial Beaudry
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jessica L. Defreese
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | | | | | | | - Sushant Malhotra
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Chong Han
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Remy Angelaud
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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39
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Affiliation(s)
- Ian S. Young
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Anna-Lena Glass
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Theresa Cravillion
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Chong Han
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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40
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Affiliation(s)
- Lauren E. Sirois
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jie Xu
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Remy Angelaud
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - David Lao
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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41
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Han C, Green K, Oehring K, Meili A, Pfeifer E, Scalone M, Gosselin F. An Efficient Through-Process for Chk1 Kinase Inhibitor GDC-0575. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.7b00388] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chong Han
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Keena Green
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Kathrin Oehring
- Department of Pharma Technical Development, F. Hoffmann-La Roche AG, Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Arthur Meili
- Department of Pharma Technical Development, F. Hoffmann-La Roche AG, Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Eugen Pfeifer
- Department of Pharma Technical Development, F. Hoffmann-La Roche AG, Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Michelangelo Scalone
- Department of Pharma Technical Development, F. Hoffmann-La Roche AG, Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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42
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Lim NK, Cravillion T, Savage S, McClory A, Han C, Zhang H, DiPasquale A, Gosselin F. Synthesis of a Selective Estrogen Receptor Degrader via a Stereospecific Elimination Approach. Org Lett 2018; 20:1114-1117. [DOI: 10.1021/acs.orglett.8b00035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ngiap-Kie Lim
- Department of Small Molecule Process
Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Theresa Cravillion
- Department of Small Molecule Process
Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Scott Savage
- Department of Small Molecule Process
Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Andrew McClory
- Department of Small Molecule Process
Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Chong Han
- Department of Small Molecule Process
Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Haiming Zhang
- Department of Small Molecule Process
Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Antonio DiPasquale
- Department of Small Molecule Process
Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule Process
Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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43
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Linghu X, Segraves NL, Abramovich I, Wong N, Müller B, Neubauer N, Fantasia S, Rieth S, Bachmann S, Jansen M, Sowell CG, Askin D, Koenig SG, Gosselin F. Cover Feature: Highly Efficient Synthesis of a Staphylococcus aureus
Targeting Payload to Enable the First Antibody-Antibiotic Conjugate (Chem. Eur. J. 12/2018). Chemistry 2018. [DOI: 10.1002/chem.201706013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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)
- Xin Linghu
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Nathaniel L. Segraves
- Department of Small Molecule Analytical Chemistry and Quality Control; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Ifat Abramovich
- Department of Small Molecule Analytical Chemistry and Quality Control; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Nicholas Wong
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Barbara Müller
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Nadja Neubauer
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Serena Fantasia
- Pharma Technical Development, Process Chemistry & Catalysis; F. Hoffmann-La Roche Ltd.; Grenzacherstrasse 124 4070 Basel Switzerland
| | - Sebastian Rieth
- Pharma Technical Development, Process Chemistry & Catalysis; F. Hoffmann-La Roche Ltd.; Grenzacherstrasse 124 4070 Basel Switzerland
| | - Stephan Bachmann
- Pharma Technical Development, Process Chemistry & Catalysis; F. Hoffmann-La Roche Ltd.; Grenzacherstrasse 124 4070 Basel Switzerland
| | - Michael Jansen
- Pharma Technical Development, Process Chemistry & Catalysis; F. Hoffmann-La Roche Ltd.; Grenzacherstrasse 124 4070 Basel Switzerland
| | - C. Gregory Sowell
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - David Askin
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Stefan G. Koenig
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
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44
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Linghu X, Segraves NL, Abramovich I, Wong N, Müller B, Neubauer N, Fantasia S, Rieth S, Bachmann S, Jansen M, Sowell CG, Askin D, Koenig SG, Gosselin F. Highly Efficient Synthesis of a Staphylococcus aureus
Targeting Payload to Enable the First Antibody-Antibiotic Conjugate. Chemistry 2017; 24:2837-2840. [DOI: 10.1002/chem.201705392] [Citation(s) in RCA: 7] [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] [Received: 11/14/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Xin Linghu
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Nathaniel L. Segraves
- Department of Small Molecule Analytical Chemistry and Quality Control; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Ifat Abramovich
- Department of Small Molecule Analytical Chemistry and Quality Control; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Nicholas Wong
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Barbara Müller
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Nadja Neubauer
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Serena Fantasia
- Pharma Technical Development, Process Chemistry & Catalysis; F. Hoffmann-La Roche Ltd.; Grenzacherstrasse 124 4070 Basel Switzerland
| | - Sebastian Rieth
- Pharma Technical Development, Process Chemistry & Catalysis; F. Hoffmann-La Roche Ltd.; Grenzacherstrasse 124 4070 Basel Switzerland
| | - Stephan Bachmann
- Pharma Technical Development, Process Chemistry & Catalysis; F. Hoffmann-La Roche Ltd.; Grenzacherstrasse 124 4070 Basel Switzerland
| | - Michael Jansen
- Pharma Technical Development, Process Chemistry & Catalysis; F. Hoffmann-La Roche Ltd.; Grenzacherstrasse 124 4070 Basel Switzerland
| | - C. Gregory Sowell
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - David Askin
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Stefan G. Koenig
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry; Genentech, Inc.; 1 DNA Way South San Francisco, CA 94080 USA
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45
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Lim NK, Weiss P, Li BX, McCulley CH, Hare SR, Bensema BL, Palazzo TA, Tantillo DJ, Zhang H, Gosselin F. Synthesis of Highly Stereodefined Tetrasubstituted Acyclic All-Carbon Olefins via a Syn-Elimination Approach. Org Lett 2017; 19:6212-6215. [DOI: 10.1021/acs.orglett.7b03141] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ngiap-Kie Lim
- Department
of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Patrick Weiss
- Department
of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Beryl X. Li
- Department
of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Christina H. McCulley
- Department
of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Stephanie R. Hare
- Department
of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Bronwyn L. Bensema
- Department
of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Teresa A. Palazzo
- Department
of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Dean J. Tantillo
- Department
of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Haiming Zhang
- Department
of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department
of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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46
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Han C, Savage S, Al-Sayah M, Yajima H, Remarchuk T, Reents R, Wirz B, Iding H, Bachmann S, Fantasia SM, Scalone M, Hell A, Hidber P, Gosselin F. Asymmetric Synthesis of Akt Kinase Inhibitor Ipatasertib. Org Lett 2017; 19:4806-4809. [PMID: 28858516 DOI: 10.1021/acs.orglett.7b02228] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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
A highly efficient asymmetric synthesis of the Akt kinase inhibitor ipatasertib (1) is reported. The bicyclic pyrimidine 2 starting material was prepared via a nitrilase biocatalytic resolution, halogen-metal exchange/anionic cyclization, and a highly diastereoselective biocatalytic ketone reduction as key steps. The route also features a halide activated, Ru-catalyzed asymmetric hydrogenation of a vinylogous carbamic acid to produce α-aryl-β-amino acid 3 in high yield and enantioselectivity. The API was assembled in a convergent manner through a late-stage amidation/deprotection/monohydrochloride salt formation sequence.
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Affiliation(s)
| | | | | | | | | | - Reinhard Reents
- Department of Pharma Technical Development Small Molecules, F. Hoffmann-La Roche AG , Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Beat Wirz
- Department of Pharma Technical Development Small Molecules, F. Hoffmann-La Roche AG , Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Hans Iding
- Department of Pharma Technical Development Small Molecules, F. Hoffmann-La Roche AG , Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Stephan Bachmann
- Department of Pharma Technical Development Small Molecules, F. Hoffmann-La Roche AG , Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Serena M Fantasia
- Department of Pharma Technical Development Small Molecules, F. Hoffmann-La Roche AG , Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Michelangelo Scalone
- Department of Pharma Technical Development Small Molecules, F. Hoffmann-La Roche AG , Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - André Hell
- Department of Pharma Technical Development Small Molecules, F. Hoffmann-La Roche AG , Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Pirmin Hidber
- Department of Pharma Technical Development Small Molecules, F. Hoffmann-La Roche AG , Grenzacherstrasse 124, CH-4070 Basel, Switzerland
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47
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Mack KA, McClory A, Zhang H, Gosselin F, Collum DB. Lithium Hexamethyldisilazide-Mediated Enolization of Highly Substituted Aryl Ketones: Structural and Mechanistic Basis of the E/Z Selectivities. J Am Chem Soc 2017; 139:12182-12189. [PMID: 28786667 DOI: 10.1021/jacs.7b05057] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Enolizations of highly substituted acyclic ketones used in the syntheses of tetrasubstituted olefin-based anticancer agents are described. Lithium hexamethyldisilazide (LiHMDS)-mediated enolizations are moderately Z-selective in neat tetrahydrofuran (THF) and E-selective in 2.0 M THF/hexane. The results of NMR spectroscopy show the resulting enolates to be statistically distributed ensembles of E,E-, E,Z-, and Z,Z-enolate dimers with subunits that reflect the selectivities. The results of rate studies trace the preference for E and Z isomers to tetrasolvated- and pentasolvated-monomer-based transition structures, respectively. Enolization using LiHMDS in N,N-dimethylethylamine or triethylamine in toluene affords a 65:1 mixture of LiHMDS-lithium enolate mixed dimers containing E and Z isomers, respectively. Spectroscopic studies show that condition-dependent complexation of ketone to LiHMDS occurs in trialkylamine/toluene. Rate data attribute the high selectivity exclusively to monosolvated-dimer-based transition structures.
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Affiliation(s)
- Kyle A Mack
- Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University , Ithaca, New York 14853, United States
| | - Andrew McClory
- Small Molecule Process Chemistry, Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Haiming Zhang
- Small Molecule Process Chemistry, Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Small Molecule Process Chemistry, Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - David B Collum
- Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University , Ithaca, New York 14853, United States
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48
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Li BX, Le DN, Mack KA, McClory A, Lim NK, Cravillion T, Savage S, Han C, Collum DB, Zhang H, Gosselin F. Highly Stereoselective Synthesis of Tetrasubstituted Acyclic All-Carbon Olefins via Enol Tosylation and Suzuki-Miyaura Coupling. J Am Chem Soc 2017; 139:10777-10783. [PMID: 28715208 PMCID: PMC6059653 DOI: 10.1021/jacs.7b05071] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A highly stereocontrolled synthesis of tetrasubstituted acyclic all-carbon olefins has been developed via a stereoselective enolization and tosylate formation, followed by a palladium-catalyzed Suzuki-Miyaura cross-coupling of the tosylates and pinacol boronic esters in the presence of a Pd(OAc)2/RuPhos catalytic system. Both the enol tosylation and Suzuki-Miyaura coupling reactions tolerate an array of electronically and sterically diverse substituents and generate high yield and stereoselectivity of the olefin products. Judicious choice of substrate and coupling partner provides access to either the E- or Z-olefin with excellent yield and stereochemical fidelity. Olefin isomerization was observed during the Suzuki-Miyaura coupling. However, under the optimized cross-coupling reaction conditions, the isomerization was suppressed to <5% in most cases. Mechanistic probes indicate that the olefin isomerization occurs via an intermediate, possibly a zwitterionic palladium carbenoid species.
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Affiliation(s)
- Beryl X. Li
- Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Diane N. Le
- Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Kyle A. Mack
- Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853–1301, United States
| | - Andrew McClory
- Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Ngiap-Kie Lim
- Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Theresa Cravillion
- Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Scott Savage
- Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Chong Han
- Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - David B. Collum
- Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853–1301, United States
| | - Haiming Zhang
- Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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49
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Linghu X, Wong N, Jost V, Fantasia S, Sowell CG, Gosselin F. Kumada–Corriu Heteroaryl Cross-Coupling for Synthesis of a Pharmaceutical Intermediate: Comparison of Batch Versus Continuous Reaction Modes. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00185] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xin Linghu
- Department
of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Nicholas Wong
- Department
of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Vera Jost
- Process
Research, F. Hoffmann-La Roche AG, Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Serena Fantasia
- Process
Research, F. Hoffmann-La Roche AG, Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - C. Gregory Sowell
- Department
of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department
of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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50
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Affiliation(s)
- Michael E. Dalziel
- Department of Small Molecule
Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Penghao Chen
- Department of Small Molecule
Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Diane E. Carrera
- Department of Small Molecule
Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Haiming Zhang
- Department of Small Molecule
Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Francis Gosselin
- Department of Small Molecule
Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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