1
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Alcázar J, Anderson EA, Davies HML, Febrian R, Kelly CB, Noël T, Voight EA, Zarate C, Zysman-Colman E. Better Together: Catalyzing Innovation in Organic Synthesis via Academic-Industrial Consortia. Org Lett 2024; 26:2677-2681. [PMID: 38284620 DOI: 10.1021/acs.orglett.4c00192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Affiliation(s)
- Jesús Alcázar
- Global Discovery Chemistry, Johnson & Johnson Innovative Medicine, Janssen-Cilag, S. A., Jarama 75 A, 45007 Toledo, Spain
| | - Edward A Anderson
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Huw M L Davies
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Rio Febrian
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Christopher B Kelly
- Discovery Process Research, Johnson & Johnson Innovative Medicine, 1400 McKean Road, Spring House, Pennsylvania 19477, United States
| | - Timothy Noël
- Flow Chemistry Group, van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Eric A Voight
- Discovery Research, AbbVie, Inc., 1 N Waukegan Rd, North Chicago, Illinois 60064, United States
| | - Cayetana Zarate
- Chemical Process R&D, Johnson & Johnson Innovative Medicine, Janssen-Cilag AG, Hochstrasse 201, 8200 Schaffhausen, Switzerland
| | - Eli Zysman-Colman
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, North Haugh, KY16 9ST St Andrews, U.K
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2
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Zhang B, Erb FR, Vasilopoulos A, Voight EA, Alexanian EJ. General Synthesis of N-Alkylindoles from N, N-Dialkylanilines via [4 + 1] Annulative Double C-H Functionalization. J Am Chem Soc 2023; 145:26540-26544. [PMID: 38029320 PMCID: PMC10789186 DOI: 10.1021/jacs.3c10751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Strategies enabling the construction of indoles and novel polycyclic heterocycles from simple building blocks streamline syntheses in synthetic and medicinal chemistry. Herein, we report a C-H functionalization approach to N-alkylindoles proceeding via a double, site-selective C(sp3)-H/C(sp2)-H [4 + 1] annulation of readily accessed N,N-dialkylanilines. This protocol features a site-selective hydrogen atom transfer by a tuned N-tBu amidyl radical and addition of a sulfonyl diazo coupling partner, which promotes highly site-selective homolytic aromatic substitution of the (hetero)aromatic core. Mild decarboxylation of the annulation product enables the overall introduction of a carbyne equivalent into the N,N-dialkylaniline scaffold. Furthermore, the site-selectivity and mild conditions of the indolization facilitate direct access to N-alkyl indole scaffolds in late-stage functionalization (LSF) settings.
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Affiliation(s)
- Bowen Zhang
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Frederik R. Erb
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | | | - Eric A. Voight
- AbbVie, Inc., North Chicago, Illinois 60064, United States
| | - Erik J. Alexanian
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
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3
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Hill DR, Huters AD, Towne TB, Reddy RE, Fogle JL, Voight EA, Kym PR. Parkinson's Disease: Advances in Treatment and the Syntheses of Various Classes of Pharmaceutical Drug Substances. Chem Rev 2023; 123:13693-13712. [PMID: 37975808 DOI: 10.1021/acs.chemrev.3c00479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
An overview of Parkinson's disease (PD) prevalence, diagnosis, and currently available treatment options is provided. A comprehensive list of different classes of marketed pharmaceutical drug products and the syntheses of various drug substances are summarized based on published literature.
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4
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Matsuo B, Kim S, Shreiber ST, Levitre G, Li L, Crane EA, McClain EJ, Voight EA, Molander GA. Diversifying chemical space of DNA-encoded libraries: synthesis of 2-oxa-1-azaspiro(bicyclo[3.2.0])heptanes on-DNA via visible light-mediated energy transfer catalysis. Chem Commun (Camb) 2023; 59:10964-10967. [PMID: 37608736 PMCID: PMC10528818 DOI: 10.1039/d3cc03421f] [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: 08/24/2023]
Abstract
Azaspiro[3.3]heptanes are valuable synthetic targets for drug discovery programs. The challenges associated with the preparation and diversification of this moiety as compared to other small, saturated rings have led to limited applications of compounds containing this spirocycle. In this regard, important advances in the field of synthetic photochemistry have exploited the biradical nature of the triplet excited state of 2-isoxazoline-3-carboxylates, engaging these species in intermolecular coupling reactions under visible light irradiation. As a continuation of our program preparing F(sp3)-rich, structurally complex molecules for DNA-encoded library technology (DELT) applications via photocatalysis, we disclose herein the incorporation of unique and densely functionalized 2-oxa-1-azabicyclo[3.2.0]heptanes via [2+2] cycloaddition energy transfer sensitization, providing access to an unexplored library of azaspiro compounds, many of which include additional synthetic handles important for further functionalization of the DNA-conjugated products and for library production.
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Affiliation(s)
- Bianca Matsuo
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA.
| | - Saegun Kim
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA.
| | - Scott T Shreiber
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA.
| | - Guillaume Levitre
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA.
| | - Longbo Li
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA.
| | - Erika A Crane
- Drug Hunter, Inc., 13203 SE 172nd Ave, Suite 166 PMB 2019, Happy Valley, Oregon 97086, USA
| | - Edward J McClain
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - Eric A Voight
- Global Medicinal Chemistry, Discovery Research, AbbVie, Inc, North Chicago, Illinois 60064-1802, USA
| | - Gary A Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA.
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5
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Li L, Matsuo B, Levitre G, McClain EJ, Voight EA, Crane EA, Molander GA. Dearomative intermolecular [2 + 2] photocycloaddition for construction of C(sp 3)-rich heterospirocycles on-DNA. Chem Sci 2023; 14:2713-2720. [PMID: 36908969 PMCID: PMC9993886 DOI: 10.1039/d3sc00144j] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 02/08/2023] [Indexed: 02/11/2023] Open
Abstract
DNA-encoded library (DEL) screens have significantly impacted new lead compound identification efforts within drug discovery. An advantage of DELs compared to traditional screening methods is that an exponentially broader chemical space can be effectively screened using only nmol quantities of billions of DNA-tagged, drug-like molecules. The synthesis of DELs containing diverse, sp3-rich spirocycles, an important class of molecules in drug discovery, has not been previously reported. Herein, we demonstrate the synthesis of complex and novel spirocyclic cores via an on-DNA, visible light-mediated intermolecular [2 + 2] cycloaddition of olefins with heterocycles, including indoles, azaindoles, benzofurans, and coumarins. The DNA-tagged exo-methylenecyclobutane substrates were prepared from easily accessible alkyl iodides and styrene derivatives. Broad reactivity with many other DNA-conjugated alkene substrates was observed, including unactivated and activated alkenes, and the process is tolerant of various heterocycles. The cycloaddition was successfully scaled from 10 to 100 nmol without diminished yield, indicative of this reaction's suitability for DNA-encoded library production. Evaluation of DNA compatibility with the developed reaction in a mock-library format showed that the DNA barcode was maintained with high fidelity, with <1% mutated sequences and >99% amplifiable DNA from quantitative polymerase chain reaction (PCR) and next generation sequencing (NGS).
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Affiliation(s)
- Longbo Li
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Bianca Matsuo
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Guillaume Levitre
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Edward J McClain
- Drug Discovery Science & Technology, Discovery Research & Development, AbbVie, Inc., 1 North Waukegan Rd North Chicago Illinois 60064-1802 USA.,Department of Chemistry, University of Wisconsin-Madison Madison Wisconsin 53706 USA
| | - Eric A Voight
- Drug Discovery Science & Technology, Discovery Research & Development, AbbVie, Inc., 1 North Waukegan Rd North Chicago Illinois 60064-1802 USA
| | - Erika A Crane
- Drug Hunter, Inc. 13203 SE 172nd Ave, Suite 166 PMB 2019 Happy Valley Oregon 97086 USA
| | - Gary A Molander
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
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6
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Lathrop SP, Mlinar LB, Manjrekar ON, Zhou Y, Harper KC, Sacia ER, Higgins M, Bogdan AR, Wang Z, Richter SM, Gong W, Voight EA, Henle J, Diwan M, Kallemeyn JM, Sharland JC, Wei B, Davies HML. Continuous Process to Safely Manufacture an Aryldiazoacetate and Its Direct Use in a Dirhodium-Catalyzed Enantioselective Cyclopropanation. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00288] [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: 12/15/2022]
Affiliation(s)
- Stephen P. Lathrop
- Process Research and Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Laurie B. Mlinar
- Process Research and Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Onkar N. Manjrekar
- Process Research and Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Yong Zhou
- Process Research and Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Kaid C. Harper
- Process Research and Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Eric R. Sacia
- Process Research and Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Molly Higgins
- Process Research and Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Andrew R. Bogdan
- Advanced Chemistry Technologies, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Zhe Wang
- Process Research and Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Steven M. Richter
- Process Research and Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Wei Gong
- Drug Discovery Science & Technology, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Eric A. Voight
- Drug Discovery Science & Technology, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Jeremy Henle
- Process Research and Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Moiz Diwan
- Process Research and Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Jeffrey M. Kallemeyn
- Process Research and Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Jack C. Sharland
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Bo Wei
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Huw M. L. Davies
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
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7
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Marvin CC, Greszler SN, Shelat BH, Voight EA. Synthesis of A-9758, an Inverse Agonist of Retinoic Acid-Related Orphan Receptor γt. ACS Omega 2022; 7:44383-44389. [PMID: 36506123 PMCID: PMC9730458 DOI: 10.1021/acsomega.2c06060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 09/23/2022] [Indexed: 06/17/2023]
Abstract
A-9758 is an inverse agonist of retinoic acid-related orphan receptor γt with well-characterized in vitro and in vivo anti-inflammatory activity. A chromatography-free decagram-scale synthesis of this compound was developed to support pre-clinical research activities. This route was designed to enable late-stage structure-activity relationship studies of the amide moiety and convergently uses a reductive alkylation sequence between indole and benzaldehyde intermediates. A key advantage of this strategy is the fact that the indole precursor can be alkylated at C2, as required for A-9758, or at C3 to provide access to an isomeric chemical series. Access to the critical indole fragment was expedited via an underutilized SnAr/reductive cyclization cascade sequence, and the benzaldehyde fragment was prepared in two steps from inexpensive 2,4-dichlorobenzoic acid.
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8
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Greszler SN, Zhao G, Shelat B, Voight EA. Enabling Asymmetric Synthesis of ABBV-3748, a Corrector Compound for the Treatment of Cystic Fibrosis. Org Lett 2022; 24:7305-7308. [PMID: 36178872 DOI: 10.1021/acs.orglett.2c02729] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
ABBV-3748 is a C2 corrector for the treatment of cystic fibrosis profiled among AbbVie's CFTR portfolio. A decagram-scale enabling asymmetric synthesis is described which addresses numerous shortcomings of the original route. Highlights include an InBr3-catalyzed intramolecular hydroarylation reaction that rapidly assembles the chromane core, an exceptionally efficient asymmetric hydrogenation of a primary enamide, and identification of tBuMgCl as a uniquely effective base in a challenging acyl sulfonamide formation.
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Affiliation(s)
- Stephen N Greszler
- Research & Development, AbbVie, Inc., 1 N Waukegan Rd, North Chicago, Illinois 60064, United States
| | - Gang Zhao
- Research & Development, AbbVie, Inc., 1 N Waukegan Rd, North Chicago, Illinois 60064, United States
| | - Bhadra Shelat
- Research & Development, AbbVie, Inc., 1 N Waukegan Rd, North Chicago, Illinois 60064, United States
| | - Eric A Voight
- Research & Development, AbbVie, Inc., 1 N Waukegan Rd, North Chicago, Illinois 60064, United States
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9
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Yen-Pon E, Li L, Levitre G, Majhi J, McClain EJ, Voight EA, Crane EA, Molander GA. On-DNA Hydroalkylation to Introduce Diverse Bicyclo[1.1.1]pentanes and Abundant Alkyls via Halogen Atom Transfer. J Am Chem Soc 2022; 144:12184-12191. [PMID: 35759692 PMCID: PMC10412002 DOI: 10.1021/jacs.2c03025] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [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: 01/28/2023]
Abstract
DNA-encoded libraries have proven their tremendous value in the identification of new lead compounds for drug discovery. To access libraries in new chemical space, many methods have emerged to transpose traditional mol-scale reactivity to nmol-scale, on-DNA chemistry. However, procedures to access libraries with a greater fraction of C(sp3) content are still limited, and the need to "escape from flatland" more readily on-DNA remains. Herein, we report a Giese addition to install highly functionalized bicyclo[1.1.1]pentanes (BCPs) using tricyclo[1.1.1.01,3]pentane (TCP) as a radical linchpin, as well as other diverse alkyl groups, on-DNA from the corresponding organohalides as non-stabilized radical precursors. Telescoped procedures allow extension of the substrate pool by at least an order of magnitude to ubiquitous alcohols and carboxylic acids, allowing us to "upcycle" these abundant feedstocks to afford non-traditional libraries with different physicochemical properties for the small-molecule products (i.e., non-peptide libraries with acids). This approach is amenable to library production, as a DNA damage assessment revealed good PCR amplifiability and only 6% mutated sequences for a full-length DNA tag.
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Affiliation(s)
- Expédite Yen-Pon
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Longbo Li
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Guillaume Levitre
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Jadab Majhi
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Edward J. McClain
- Drug Discovery Science & Technology, Discovery Research & Development, AbbVie, Inc., 1 N. Waukegan Road, North Chicago, Illinois 60064-1802, United States
| | - Eric A. Voight
- Drug Discovery Science & Technology, Discovery Research & Development, AbbVie, Inc., 1 N. Waukegan Road, North Chicago, Illinois 60064-1802, United States
| | - Erika A. Crane
- Drug Discovery Science & Technology, Discovery Research & Development, AbbVie, Inc., 1 N. Waukegan Road, North Chicago, Illinois 60064-1802, United States
| | - Gary A. Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
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10
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Buchman M, Farney EP, Greszler SN, Altenbach RJ, Gfesser GA, Voight EA. Lithioarene Cycliacylation and Pd-Catalyzed Aminoethylation/Cyclization to Access Electronically Diverse Saturated Isoquinoline Derivatives. J Org Chem 2021; 87:776-789. [PMID: 34939418 DOI: 10.1021/acs.joc.1c02302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report operationally facile methods for the synthesis of substituted dihydroisoquinolinones and tetrahydroisoquinolines from readily accessible o-bromobenzyl bromides and o-bromobenzaldehydes, respectively. While classical electrophilic aromatic substitution reactions are tailored to the construction of saturated isoquinolines derived from electron-rich precursors, we demonstrate efficient syntheses from electronically diverse substrates to produce cyclized products as single regioisomers.
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Affiliation(s)
- Marek Buchman
- Centralized Medicinal Chemistry, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Elliot P Farney
- Centralized Medicinal Chemistry, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Stephen N Greszler
- Centralized Medicinal Chemistry, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Robert J Altenbach
- Centralized Medicinal Chemistry, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Gregory A Gfesser
- Centralized Medicinal Chemistry, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Eric A Voight
- Centralized Medicinal Chemistry, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
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11
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Voight EA, Greszler SN, Kym PR. Fueling the Pipeline via Innovations in Organic Synthesis. ACS Med Chem Lett 2021; 12:1365-1373. [PMID: 34531945 DOI: 10.1021/acsmedchemlett.1c00351] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/16/2021] [Indexed: 11/29/2022] Open
Abstract
The paramount importance of synthetic organic chemistry in the pharmaceutical industry arises from the necessity to physically prepare all designed molecules to obtain key data to feed the design-synthesis-data cycle, with the medicinal chemist at the center of this cycle. Synthesis specialists accelerate the cycle of medicinal chemistry innovation by rapidly identifying and executing impactful synthetic methods and strategies to accomplish project goals, addressing the synthetic accessibility bottleneck that often plagues discovery efforts. At AbbVie, Discovery Synthesis Groups (DSGs) such as Centralized Organic Synthesis (COS) have been deployed as embedded members of medicinal chemistry teams, filling the gap between discovery and process chemistry. COS chemists provide synthetic tools, scaffolds, and lead compounds to fuel the pipeline. Examples of project contributions from neuroscience, cystic fibrosis, and virology illustrate the impact of the DSG approach. In the first ten years of innovative science in pursuit of excellence in synthesis, several advanced drug candidates, including ABBV-2222 (galicaftor) for cystic fibrosis and foslevodopa/foscarbidopa for Parkinson's disease, have emerged with key contributions from COS.
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Affiliation(s)
- Eric A. Voight
- Drug Discovery Science & Technology, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064-1802, United States
| | - Stephen N. Greszler
- Drug Discovery Science & Technology, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064-1802, United States
| | - Philip R. Kym
- Drug Discovery Science & Technology, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064-1802, United States
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12
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Sharland JC, Wei B, Hardee DJ, Hodges TR, Gong W, Voight EA, Davies HML. Asymmetric synthesis of pharmaceutically relevant 1-aryl-2-heteroaryl- and 1,2-diheteroarylcyclopropane-1-carboxylates. Chem Sci 2021; 12:11181-11190. [PMID: 34522315 PMCID: PMC8386643 DOI: 10.1039/d1sc02474d] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 06/28/2021] [Indexed: 12/14/2022] Open
Abstract
This study describes general methods for the enantioselective syntheses of pharmaceutically relevant 1-aryl-2-heteroaryl- and 1,2-diheteroarylcyclopropane-1-carboxylates through dirhodium tetracarboxylate-catalysed asymmetric cyclopropanation of vinyl heterocycles with aryl- or heteroaryldiazoacetates. The reactions are highly diastereoselective and high asymmetric induction could be achieved using either (R)-pantolactone as a chiral auxiliary or chiral dirhodium tetracarboxylate catalysts. For meta- or para-substituted aryl- or heteroaryldiazoacetates the optimum catalyst was Rh2(R-p-Ph-TPCP)4. In the case of ortho-substituted aryl- or heteroaryldiazoacetates, the optimum catalyst was Rh2(R-TPPTTL)4. For a highly enantioselective reaction with the ortho-substituted substrates, 2-chloropyridine was required as an additive in the presence of either 4 Å molecular sieves or 1,1,1,3,3,3-hexafluoroisopropanol (HFIP). Under the optimized conditions, the cyclopropanation could be conducted in the presence of a variety of heterocycles, such as pyridines, pyrazines, quinolines, indoles, oxadiazoles, thiophenes and pyrazoles.
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Affiliation(s)
- Jack C Sharland
- Department of Chemistry, Emory University 1515 Dickey Drive Atlanta GA 30322 USA
| | - Bo Wei
- Department of Chemistry, Emory University 1515 Dickey Drive Atlanta GA 30322 USA
| | - David J Hardee
- Drug Discovery Science and Technology, AbbVie 1 North Waukegan Rd. North Chicago IL 60064 USA
| | - Timothy R Hodges
- Drug Discovery Science and Technology, AbbVie 1 North Waukegan Rd. North Chicago IL 60064 USA
| | - Wei Gong
- Drug Discovery Science and Technology, AbbVie 1 North Waukegan Rd. North Chicago IL 60064 USA
| | - Eric A Voight
- Drug Discovery Science and Technology, AbbVie 1 North Waukegan Rd. North Chicago IL 60064 USA
| | - Huw M L Davies
- Department of Chemistry, Emory University 1515 Dickey Drive Atlanta GA 30322 USA
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13
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Huters AD, Stambuli J, Klix RC, Matulenko MA, Chan VS, Simanis J, Hill DR, Reddy RE, Towne TB, Bellettini JR, Kotecki BJ, Cardinal-David B, Ji J, Voight EA, Shou M, Balaraman S, Ashok A, Ghosh S. Scalable Asymmetric Syntheses of Foslevodopa and Foscarbidopa Drug Substances for the Treatment of Parkinson's Disease. J Org Chem 2021; 87:1986-1995. [PMID: 34280307 DOI: 10.1021/acs.joc.1c00905] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Foslevodopa (FLD, levodopa 4'-monophosphate, 3) and foscarbidopa (FCD, carbidopa 4'-monophosphate, 4) were identified as water-soluble prodrugs of levodopa (LD, 1) and carbidopa (CD, 2), respectively, which are useful for the treatment of Parkinson's disease. Herein, we describe asymmetric syntheses of FLD (3) and FCD (4) drug substances and their manufacture at pilot scale. The synthesis of FLD (3) employs a Horner-Wadsworth-Emmons olefination reaction followed by enantioselective hydrogenation of the double bond as key steps to introduce the α-amino acid moiety with the desired stereochemistry. The synthesis of FCD (4) features a Mizoroki-Heck reaction followed by enantioselective hydrazination to install the quaternary chiral center bearing a hydrazine moiety.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Selvakumar Balaraman
- Anthem Biosciences, No. 49 Canara Bank Road, Bommasandra Industrial Area, Bangalore 560 099, Karnataka, India
| | - Abhishek Ashok
- Anthem Biosciences, No. 49 Canara Bank Road, Bommasandra Industrial Area, Bangalore 560 099, Karnataka, India
| | - Soma Ghosh
- Anthem Biosciences, No. 49 Canara Bank Road, Bommasandra Industrial Area, Bangalore 560 099, Karnataka, India
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14
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Voight EA, Greszler SN, Hartung J, Ji J, Klix RC, Randolph JT, Shelat BH, Waters JE, DeGoey DA. Desymmetrization of pibrentasvir for efficient prodrug synthesis. Chem Sci 2021; 12:10076-10082. [PMID: 34349971 PMCID: PMC8317637 DOI: 10.1039/d1sc02396a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/28/2021] [Indexed: 12/15/2022] Open
Abstract
A novel and practical desymmetrization tactic is described to access a new class of pibrentasvir prodrugs. The homotopic benzimidazoles of pibrentasvir (PIB) are differentiated via a one-pot di-Boc/mono-de-Boc selective N-Boc protection and formaldehyde adduct formation sequence, both enabled by crystallization-induced selectivity. The first step represents the only known application of the Horeau principle of statistical amplification for C2-symmetric polyheterocycle regioselective functionalization. The resulting versatile intermediate is employed in the high-yielding preparation of several pibrentasvir prodrug candidates. Horeau principle statistical amplification and solubility-driven selectivities allow C2-desymmetrization of pibrentasvir without typically required internal functionalization or steric proximity effects.![]()
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Affiliation(s)
- Eric A Voight
- Drug Discovery Science & Technology, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - Stephen N Greszler
- Drug Discovery Science & Technology, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - John Hartung
- Process Research and Development, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - Jianguo Ji
- Process Research and Development, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - Russell C Klix
- Process Research and Development, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - John T Randolph
- Drug Discovery Science & Technology, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - Bhadra H Shelat
- Process Research and Development, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - Jan E Waters
- Drug Discovery Science & Technology, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - David A DeGoey
- Drug Discovery Science & Technology, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
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15
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Rosebraugh M, Voight EA, Moussa EM, Jameel F, Lou X, Zhang GGZ, Mayer PT, Stolarik D, Carr RA, Enright BP, Liu W, Facheris MF, Kym PR. Foslevodopa/Foscarbidopa: A New Subcutaneous Treatment for Parkinson's Disease. Ann Neurol 2021; 90:52-61. [PMID: 33772855 PMCID: PMC8251848 DOI: 10.1002/ana.26073] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 11/25/2022]
Abstract
Objective The aim was to demonstrate that continuous s.c. infusion of a soluble levodopa (LD)/carbidopa (CD) phosphate prodrug combination effectively delivers stable LD exposure via a minimally invasive and convenient mode and has the potential to treat Parkinson's disease (PD) patients who are not well controlled on oral medication. Methods Foslevodopa and foscarbidopa were prepared and the equilibrium solubility and chemical stability examined in aqueous media with different values of pH. Solutions of foslevodopa/foscarbidopa (ratios ranging from 4:1 to 20:1) were prepared by dissolving pH‐adjusted lyophilized materials in water and infused s.c. in healthy volunteers for ≤72 hours. Frequent blood samples were collected to measure LD and CD exposure, and safety was monitored throughout the study. Results Foslevodopa/foscarbidopa (ABBV‐951) demonstrates high water solubility and excellent chemical stability near physiological pH, enabling continuous s.c. infusion therapy. After s.c. infusion, a stable LD pharmacokinetic (PK) profile was maintained for ≤72 hours, and the infusion was well tolerated. Interpretation Preparation of foslevodopa and foscarbidopa enables preclinical and clinical PK, safety, and tolerability studies in support of their advancement for the treatment of PD. In phase 1 clinical trials, foslevodopa/foscarbidopa demonstrates consistent and stable LD plasma exposure, supporting further studies of this treatment as a potentially transformational option for those suffering from PD. ANN NEUROL 2021;90:52–61
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Affiliation(s)
- Matthew Rosebraugh
- Clinical Pharmacology and Pharmacometrics, AbbVie Inc., North Chicago, IL
| | - Eric A Voight
- Discovery Centralized Medicinal Chemistry, AbbVie Inc., North Chicago, IL
| | - Ehab M Moussa
- Drug Product Development, AbbVie Inc., North Chicago, IL
| | - Feroz Jameel
- Drug Product Development, AbbVie Inc., North Chicago, IL
| | - Xiaochun Lou
- Drug Product Development, AbbVie Inc., North Chicago, IL
| | | | - Peter T Mayer
- Clinical Drug Supply Management, AbbVie Inc., North Chicago, IL
| | - Deanne Stolarik
- Drug Metabolism Pharmacokinetics and Bioanalysis, AbbVie Inc., North Chicago, IL
| | - Robert A Carr
- Drug Metabolism Pharmacokinetics and Bioanalysis, AbbVie Inc., North Chicago, IL
| | | | - Wei Liu
- Clinical Pharmacology and Pharmacometrics, AbbVie Inc., North Chicago, IL
| | | | - Philip R Kym
- Discovery Centralized Medicinal Chemistry, AbbVie Inc., North Chicago, IL
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16
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Randolph JT, Voight EA, Greszler SN, Uno BE, Newton JN, Gleason KM, Stolarik D, Van Handel C, Bow DAJ, DeGoey DA. Prodrug Strategies to Improve the Solubility of the HCV NS5A Inhibitor Pibrentasvir (ABT-530). J Med Chem 2020; 63:11034-11044. [PMID: 32881503 DOI: 10.1021/acs.jmedchem.0c00956] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A research program to discover solubilizing prodrugs of the HCV NS5A inhibitor pibrentasvir (PIB) identified phosphomethyl analog 2 and trimethyl-lock (TML) prodrug 9. The prodrug moiety is attached to a benzimidazole nitrogen atom via an oxymethyl linkage to allow for rapid and complete release of the drug for absorption following phosphate removal by intestinal alkaline phosphatase. These prodrugs have good hydrolytic stability properties and improved solubility compared to PIB, both in aqueous buffer (pH 7) and FESSIF (pH 5). TML prodrug 9 provided superior in vivo performance, delivering high plasma concentrations of PIB in PK studies conducted in mice, dogs, and monkeys. The improved dissolution properties of these phosphate prodrugs provide them the potential to simplify drug dosage forms for PIB-containing HCV therapy.
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Affiliation(s)
- John T Randolph
- Abbvie Incorporated, Global Pharmaceutical Research and Development, 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Eric A Voight
- Abbvie Incorporated, Global Pharmaceutical Research and Development, 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Stephen N Greszler
- Abbvie Incorporated, Global Pharmaceutical Research and Development, 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Brice E Uno
- Abbvie Incorporated, Global Pharmaceutical Research and Development, 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - James N Newton
- Abbvie Incorporated, Global Pharmaceutical Research and Development, 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Kenneth M Gleason
- Abbvie Incorporated, Global Pharmaceutical Research and Development, 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - DeAnne Stolarik
- Abbvie Incorporated, Global Pharmaceutical Research and Development, 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Cecilia Van Handel
- Abbvie Incorporated, Global Pharmaceutical Research and Development, 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Daniel A J Bow
- Abbvie Incorporated, Global Pharmaceutical Research and Development, 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - David A DeGoey
- Abbvie Incorporated, Global Pharmaceutical Research and Development, 1 North Waukegan Road, North Chicago, Illinois 60064, United States
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17
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Greszler SN, Zhao G, Buchman M, Searle XB, Liu B, Voight EA. General Asymmetric Synthesis of Densely Functionalized Pyrrolidines via Endo-Selective [3+2] Cycloaddition of β-Quaternary-Substituted Nitroalkenes and Azomethine Ylides. J Org Chem 2020; 85:7620-7632. [PMID: 32374998 DOI: 10.1021/acs.joc.0c00820] [Citation(s) in RCA: 8] [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: 01/01/2023]
Abstract
A scalable endo-selective synthesis of 2,3,4,5-tetrasubstituted pyrrolidines via cycloaddition of nitroalkenes and azomethine ylides is reported using a P,N-type ferrocenyl ligand and [Cu(OTf)]2·C6H6. The robust method is tolerant of a wide range of functionalities, including rarely reported quaternary nitroalkene substitution and heteroaromatic and hindered ortho-substituted arenes on the azomethine ylide. Subsequent transformations highlight the utility of the method in the synthesis of densely functionalized small molecules suitable for fragment-based drug discovery and the cystic fibrosis C2-corrector clinical candidate ABBV-3221.
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Affiliation(s)
- Stephen N Greszler
- Research & Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Gang Zhao
- Research & Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Marek Buchman
- Research & Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Xenia B Searle
- Research & Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Bo Liu
- Research & Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Eric A Voight
- Research & Development, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
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18
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Garlets ZJ, Wertz BD, Liu W, Voight EA, Davies HM. Regio- and Stereoselective Rhodium(II)-Catalyzed C–H Functionalization of Cyclobutanes. Chem 2020; 6:538. [DOI: 10.1016/j.chempr.2020.01.007] [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: 10/25/2022]
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19
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Abstract
Recent developments in controlled C-H functionalization transformations continue to inspire new retrosynthetic disconnections. One tactic in C-H functionalization is the intermolecular C-H insertion reaction of rhodium bound carbenes. These intermediates can undergo highly selective transformations through the modulation of the ligand framework of the rhodium catalyst. This work describes our continued efforts towards differentiating C-H bonds in the same molecule by judicious catalyst choice. Substituted cyclobutanes which exist as a mixture of interconverting conformers and possess neighboring C-H bonds within a highly strained framework are the targets herein for challenging the current suite of catalysts. While most C-H functionalization tactics focus on generating 1,2-disubstituted cyclobutanes via substrate-controlled directing group methods, the regiodivergent methods in this paper provide access to chiral 1,1-disubstituted and cis-1,3-disubstituted cyclobutanes simply by changing the catalyst identity, thus permitting entry to novel chemical space.
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Affiliation(s)
- Zachary J. Garlets
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA 30322
| | - Benjamin D. Wertz
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA 30322
| | - Wenbin Liu
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA 30322
| | - Eric A. Voight
- Research & Development, AbbVie, 1 North Waukegan Road, North Chicago, Illinois, 60064 (USA)
| | - Huw M. L. Davies
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA 30322
- Lead Contact
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20
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Abstract
An enabling preclinical synthetic route to cystic fibrosis candidate ABBV-2222 is described. Two stereoselective steps provide access to an aminochroman intermediate with excellent control, and a late-stage demethylation/difluoromethylation sequence provides efficient access to the target molecule.
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Affiliation(s)
- Stephen N Greszler
- Research & Development, AbbVie, Inc. , 1 North Waukegan Road , North Chicago , Illinois 60064 , United States
| | - Bhadra Shelat
- Research & Development, AbbVie, Inc. , 1 North Waukegan Road , North Chicago , Illinois 60064 , United States
| | - Eric A Voight
- Research & Development, AbbVie, Inc. , 1 North Waukegan Road , North Chicago , Illinois 60064 , United States
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21
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Garlets ZJ, Hicks EF, Fu J, Voight EA, Davies HML. Regio- and Stereoselective Rhodium(II)-Catalyzed C-H Functionalization of Organosilanes by Donor/Acceptor Carbenes Derived from Aryldiazoacetates. Org Lett 2019; 21:4910-4914. [PMID: 31184488 DOI: 10.1021/acs.orglett.9b01833] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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
The regioselective and enantioselective intermolecular sp3 C-H functionalization of silicon-substituted alkanes with aryl diazoacetates was accomplished using the recently developed dirhodium catalyst Rh2( S-TPPTTL)4. These reactions generate a diverse array of stereodefined substituted silacycloalkanes with high enantioselectivity and diastereoselectivity.
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Affiliation(s)
- Zachary J Garlets
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
| | - Elliot F Hicks
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
| | - Jiantao Fu
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
| | - Eric A Voight
- Research & Development , AbbVie , 1 North Waukegan Road , North Chicago , Illinois 60064 , United States
| | - Huw M L Davies
- Department of Chemistry , Emory University , 1515 Dickey Drive , Atlanta , Georgia 30322 , United States
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22
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Voight EA, Brown BS, Greszler SN, Halvorsen GT, Zhao G, Kruger AW, Hartung J, Lukin KA, Martinez SR, Moschetta EG, Tudesco MT, Ide ND. Synthesis of ABBV-168, a 2'-Bromouridine for the Treatment of Hepatitis C. J Org Chem 2018; 84:4723-4734. [PMID: 30412402 DOI: 10.1021/acs.joc.8b02341] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
ABBV-168 is a dihalogenated nucleotide under investigation for the treatment of hepatitis C virus. Three synthetic routes aimed at achieving the stereoselective installation of the C2' gem-Br,F substitution and subsequent Vorbruggen glycosylation were explored to prepare the penultimate nucleoside intermediate. Development culminated in a route to ABBV-168 featuring a de novo chromatography-free furanose synthesis, protecting group-directed Vorbruggen glycosylation, and highly selective phosphoramidation to furnish the API.
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Affiliation(s)
- Eric A Voight
- Discovery Chemistry and Technology , AbbVie, Inc. , 1 North Waukegan Road , North Chicago , Illinois 60064-1802 , United States
| | - Brian S Brown
- Discovery Chemistry and Technology , AbbVie, Inc. , 1 North Waukegan Road , North Chicago , Illinois 60064-1802 , United States
| | - Stephen N Greszler
- Discovery Chemistry and Technology , AbbVie, Inc. , 1 North Waukegan Road , North Chicago , Illinois 60064-1802 , United States
| | - Geoff T Halvorsen
- Discovery Chemistry and Technology , AbbVie, Inc. , 1 North Waukegan Road , North Chicago , Illinois 60064-1802 , United States
| | - Gang Zhao
- Discovery Chemistry and Technology , AbbVie, Inc. , 1 North Waukegan Road , North Chicago , Illinois 60064-1802 , United States
| | - Albert W Kruger
- Process Research and Development , AbbVie, Inc. , 1401 Sheridan Road , North Chicago , Illinois 60064-1802 , United States
| | - John Hartung
- Process Research and Development , AbbVie, Inc. , 1401 Sheridan Road , North Chicago , Illinois 60064-1802 , United States
| | - Kirill A Lukin
- Process Research and Development , AbbVie, Inc. , 1401 Sheridan Road , North Chicago , Illinois 60064-1802 , United States
| | - Steven R Martinez
- Process Research and Development , AbbVie, Inc. , 1401 Sheridan Road , North Chicago , Illinois 60064-1802 , United States
| | - Eric G Moschetta
- Process Research and Development , AbbVie, Inc. , 1401 Sheridan Road , North Chicago , Illinois 60064-1802 , United States
| | - Michael T Tudesco
- Process Research and Development , AbbVie, Inc. , 1401 Sheridan Road , North Chicago , Illinois 60064-1802 , United States
| | - Nathan D Ide
- Process Research and Development , AbbVie, Inc. , 1401 Sheridan Road , North Chicago , Illinois 60064-1802 , United States
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23
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Tudesco MT, Moschetta EG, Voight EA. Scale-Up of a Continuous Extraction Process for Driving an Equilibrium-Limited Reaction to Completion. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00260] [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: 11/30/2022]
Affiliation(s)
- Michael T. Tudesco
- Process Research and Development, AbbVie, Inc., 1401 Sheridan Road, North Chicago, Illinois 60064-1802, United States
| | - Eric G. Moschetta
- Process Research and Development, AbbVie, Inc., 1401 Sheridan Road, North Chicago, Illinois 60064-1802, United States
| | - Eric A. Voight
- Discovery Chemistry and Technology, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064-1802, United States
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24
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Greszler SN, Halvorsen GT, Voight EA. Synthesis of Substituted Cyclopropanecarboxylates via Room Temperature Palladium-Catalyzed α-Arylation of Reformatsky Reagents. Org Lett 2017; 19:2490-2493. [DOI: 10.1021/acs.orglett.7b00707] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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)
- Stephen N. Greszler
- Centralized Lead Optimization − Discovery Chemistry & Technology, AbbVie, Inc., 1 N. Waukegan Road, North Chicago, Illinois 60064, United States
| | - Geoff T. Halvorsen
- Centralized Lead Optimization − Discovery Chemistry & Technology, AbbVie, Inc., 1 N. Waukegan Road, North Chicago, Illinois 60064, United States
| | - Eric A. Voight
- Centralized Lead Optimization − Discovery Chemistry & Technology, AbbVie, Inc., 1 N. Waukegan Road, North Chicago, Illinois 60064, United States
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25
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Fu L, Mighion JD, Voight EA, Davies HML. Synthesis of 2,2,2,-Trichloroethyl Aryl- and Vinyldiazoacetates by Palladium-Catalyzed Cross-Coupling. Chemistry 2017; 23:3272-3275. [PMID: 28093820 DOI: 10.1002/chem.201700101] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 11/16/2016] [Indexed: 11/11/2022]
Abstract
An efficient and convenient synthesis of 2,2,2-trichloroethyl (TCE) aryl- and vinyldiazoacetates was achieved by palladium-catalyzed cross-coupling reactions between TCE diazoacetates and aryl or vinyl iodides. The broad substrate scope allows for rapid and facile formation of TCE aryl- and vinyldiazoacetates, which recently have emerged as versatile reagents for rhodium-carbene chemistry.
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Affiliation(s)
- Liangbing Fu
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia, 30322, USA
| | - Jeffrey D Mighion
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia, 30322, USA
| | - Eric A Voight
- Research & Development, AbbVie, 1 North Waukegan Road, North Chicago, Illinois, 60064, USA
| | - Huw M L Davies
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia, 30322, USA
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26
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Voight EA, Daanen JF, Schmidt RG, Gomtsyan A, Dart MJ, Kym PR. Stereoselective Synthesis of a Dipyridyl Transient Receptor Potential Vanilloid-3 (TRPV3) Antagonist. J Org Chem 2016; 81:12060-12064. [PMID: 27934457 DOI: 10.1021/acs.joc.6b02443] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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
An efficient asymmetric synthesis of dipyridyl TRPV3 antagonist 1 is reported. The four-step route involves two C-C bond-forming steps, a highly diastereoselective alkene hydration, and asymmetric ketone hydrosilylation in 97% ee.
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Affiliation(s)
- Eric A Voight
- Centralized Lead Optimization - Discovery Chemistry & Technology, AbbVie, Inc. , 1 N Waukegan Rd, North Chicago, Illinois 60064, United States
| | - Jerome F Daanen
- Centralized Lead Optimization - Discovery Chemistry & Technology, AbbVie, Inc. , 1 N Waukegan Rd, North Chicago, Illinois 60064, United States
| | - Robert G Schmidt
- Centralized Lead Optimization - Discovery Chemistry & Technology, AbbVie, Inc. , 1 N Waukegan Rd, North Chicago, Illinois 60064, United States
| | - Arthur Gomtsyan
- Centralized Lead Optimization - Discovery Chemistry & Technology, AbbVie, Inc. , 1 N Waukegan Rd, North Chicago, Illinois 60064, United States
| | - Michael J Dart
- Centralized Lead Optimization - Discovery Chemistry & Technology, AbbVie, Inc. , 1 N Waukegan Rd, North Chicago, Illinois 60064, United States
| | - Philip R Kym
- Centralized Lead Optimization - Discovery Chemistry & Technology, AbbVie, Inc. , 1 N Waukegan Rd, North Chicago, Illinois 60064, United States
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27
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Gomtsyan A, Schmidt RG, Bayburt EK, Gfesser GA, Voight EA, Daanen JF, Schmidt DL, Cowart MD, Liu H, Altenbach RJ, Kort ME, Clapham B, Cox PB, Shrestha A, Henry R, Whittern DN, Reilly RM, Puttfarcken PS, Brederson JD, Song P, Li B, Huang SM, McDonald HA, Neelands TR, McGaraughty SP, Gauvin DM, Joshi SK, Banfor PN, Segreti JA, Shebley M, Faltynek CR, Dart MJ, Kym PR. Synthesis and Pharmacology of (Pyridin-2-yl)methanol Derivatives as Novel and Selective Transient Receptor Potential Vanilloid 3 Antagonists. J Med Chem 2016; 59:4926-47. [DOI: 10.1021/acs.jmedchem.6b00287] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Arthur Gomtsyan
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Robert G. Schmidt
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Erol K. Bayburt
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Gregory A. Gfesser
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Eric A. Voight
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Jerome F. Daanen
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Diana L. Schmidt
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Marlon D. Cowart
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Huaqing Liu
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Robert J. Altenbach
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Michael E. Kort
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Bruce Clapham
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Phil B. Cox
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Anurupa Shrestha
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Rodger Henry
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - David N. Whittern
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Regina M. Reilly
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Pamela S. Puttfarcken
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Jill-Desiree Brederson
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Ping Song
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Bin Li
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Susan M. Huang
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Heath A. McDonald
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Torben R. Neelands
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Steve P. McGaraughty
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Donna M. Gauvin
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Shailen K. Joshi
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Patricia N. Banfor
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Jason A. Segreti
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Mohamad Shebley
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Connie R. Faltynek
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Michael J. Dart
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Philip R. Kym
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
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28
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Gomtsyan A, McDonald HA, Schmidt RG, Daanen JF, Voight EA, Segreti JA, Puttfarcken PS, Reilly RM, Kort ME, Dart MJ, Kym PR. TRPV1 ligands with hyperthermic, hypothermic and no temperature effects in rats. Temperature (Austin) 2015; 2:297-301. [PMID: 27227030 PMCID: PMC4843892 DOI: 10.1080/23328940.2015.1046013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 04/23/2015] [Accepted: 04/23/2015] [Indexed: 12/21/2022] Open
Abstract
Transient receptor potential vanilloid 1 (TRPV1) is a multifunctional ion channel playing important roles in a numerous biological processes including the regulation of body temperature. Within distinct and tight chemical space of chromanyl ureas TRPV1 ligands were identified that exhibit distinctive pharmacology and a spectrum of thermoregulatory effects ranging from hypothermia to hyperthermia. The ability to manipulate these effects by subtle structural modifications of chromanyl ureas may serve as a productive approach in TRPV1 drug discovery programs addressing either side effect or desired target profiles of the compounds. Because chromanyl ureas in the TRPV1 context are generally antagonists, we verified observed partial agonist effects of a subset of compounds within that chemotype by comparing the in vitro profile of Compound 3 with known partial agonist 5'-I-RTX.
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Key Words
- 5′-I-RTX, 5′-iodo-resiniferatoxi
- 5′-iodo-RTX
- Compound 1, (R)-1-(2,2-dimethyl-7-(trifluoromethyl)chroman-4-yl)-3-(3,6-dimethylisoquinolin-5-yl)urea
- Compound 2, (R)-1-(2,2-dimethyl-7-(trifluoromethyl)chroman-4-yl)-3-(3-methylisoquinolin-5-yl)urea
- Compound 3, (R)-1-(2,2-dimethyl-8-(trifluoromethoxy)chroman-4-yl)-3-(3-methylisoquinolin-5-yl)urea
- FLIPR, fluorometric imaging plate reader
- OA, osteoarthritis
- TRPV1
- TRPV1 agonists
- TRPV1 antagonists
- TRPV1, transient receptor potential vanilloid 1
- chromanyl ureas
- hyperthermia
- hypothermia
- thermoregulation
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Affiliation(s)
| | | | | | | | - Eric A Voight
- Research & Development; AbbVie Inc. ; Chicago, IL, USA
| | | | | | | | | | | | - Philip R Kym
- Research & Development; AbbVie Inc. ; Chicago, IL, USA
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29
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Voight EA, Gomtsyan AR, Daanen JF, Perner RJ, Schmidt RG, Bayburt EK, DiDomenico S, McDonald HA, Puttfarcken PS, Chen J, Neelands TR, Bianchi BR, Han P, Reilly RM, Franklin PH, Segreti JA, Nelson RA, Su Z, King AJ, Polakowski JS, Baker SJ, Gauvin DM, Lewis LR, Mikusa JP, Joshi SK, Faltynek CR, Kym PR, Kort ME. Discovery of (R)-1-(7-Chloro-2,2-bis(fluoromethyl)chroman-4-yl)-3-(3-methylisoquinolin-5-yl)urea (A-1165442): A Temperature-Neutral Transient Receptor Potential Vanilloid-1 (TRPV1) Antagonist with Analgesic Efficacy. J Med Chem 2014; 57:7412-24. [DOI: 10.1021/jm500916t] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [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)
- Eric A. Voight
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Arthur R. Gomtsyan
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Jerome F. Daanen
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Richard J. Perner
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Robert G. Schmidt
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Erol K. Bayburt
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Stanley DiDomenico
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Heath A. McDonald
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Pamela S. Puttfarcken
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Jun Chen
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Torben R. Neelands
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Bruce R. Bianchi
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Ping Han
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Regina M. Reilly
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Pamela H. Franklin
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Jason A. Segreti
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Richard A. Nelson
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Zhi Su
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Andrew J. King
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - James S. Polakowski
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Scott J. Baker
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Donna M. Gauvin
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - LaGeisha R. Lewis
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Joseph P. Mikusa
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Shailen K. Joshi
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Connie R. Faltynek
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Philip R. Kym
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Michael E. Kort
- Research & Development, AbbVie Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
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30
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Reilly RM, McDonald HA, Puttfarcken PS, Joshi SK, Lewis L, Pai M, Franklin PH, Segreti JA, Neelands TR, Han P, Chen J, Mantyh PW, Ghilardi JR, Turner TM, Voight EA, Daanen JF, Schmidt RG, Gomtsyan A, Kort ME, Faltynek CR, Kym PR. Pharmacology of modality-specific transient receptor potential vanilloid-1 antagonists that do not alter body temperature. J Pharmacol Exp Ther 2012; 342:416-28. [PMID: 22570364 DOI: 10.1124/jpet.111.190314] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The transient receptor potential vanilloid-1 (TRPV1) channel is involved in the development and maintenance of pain and participates in the regulation of temperature. The channel is activated by diverse agents, including capsaicin, noxious heat (≥ 43°C), acidic pH (< 6), and endogenous lipids including N-arachidonoyl dopamine (NADA). Antagonists that block all modes of TRPV1 activation elicit hyperthermia. To identify efficacious TRPV1 antagonists that do not affect temperature antagonists representing multiple TRPV1 pharmacophores were evaluated at recombinant rat and human TRPV1 channels with Ca(2+) flux assays, and two classes of antagonists were identified based on their differential ability to inhibit acid activation. Although both classes of antagonists completely blocked capsaicin- and NADA-induced activation of TRPV1, select compounds only partially inhibited activation of the channel by protons. Electrophysiology and calcitonin gene-related peptide release studies confirmed the differential pharmacology of these antagonists at native TRPV1 channels in the rat. Comparison of the in vitro pharmacological properties of these TRPV1 antagonists with their in vivo effects on core body temperature confirms and expands earlier observations that acid-sparing TRPV1 antagonists do not significantly increase core body temperature. Although both classes of compounds elicit equivalent analgesia in a rat model of knee joint pain, the acid-sparing antagonist tested is not effective in a mouse model of bone cancer pain.
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Affiliation(s)
- Regina M Reilly
- Departments of Neuroscience Research and Integrative Pharmacology, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois 60064, USA
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31
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Affiliation(s)
- Eric A. Voight
- Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064, United States
| | - Jerome F. Daanen
- Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064, United States
| | - Michael E. Kort
- Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064, United States
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32
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Voight EA, Yin H, Downing SV, Calad SA, Matsuhashi H, Giordano I, Hennessy AJ, Goodman RM, Wood JL. Target-directed synthesis of antibacterial drug candidate GSK966587. Org Lett 2010; 12:3422-5. [PMID: 20670007 DOI: 10.1021/ol101235f] [Citation(s) in RCA: 28] [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: 11/30/2022]
Abstract
An efficient enantioselective total synthesis of the potent antibiotic GSK966587 was accomplished. Highlights of the synthesis include two innovative Heck reactions, a highly selective zincate base directed ortho-metalation, Sharpless asymmetric epoxidation, and a fully convergent final step fragment coupling.
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Affiliation(s)
- Eric A Voight
- GlaxoSmithKline, Synthetic Chemistry Department, 709 Swedeland Road, P.O. Box 1539, King of Prussia, Pennsylvania 19406, USA.
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33
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34
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Marvin CC, Voight EA, Suh JM, Paradise CL, Burke SD. Synthesis of (+)-didemniserinolipid B: application of a 2-allyl-4-fluorophenyl auxiliary for relay ring-closing metathesis. J Org Chem 2008; 73:8452-7. [PMID: 18811201 DOI: 10.1021/jo801666t] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [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
The synthesis of didemniserinolipid B utilizing a ketalization/ring-closing metathesis (K/RCM) strategy is described. In the course of this work, a novel 2-allyl-4-fluorophenyl auxiliary for relay ring-closing metathesis (RRCM) was developed, which increased the yield of the RCM. The resulting 6,8-dioxabicyclo[3.2.1]octene core was selectively functionalized by complimentary dihydroxylation and epoxidation routes to install the C10 axial alcohol. This bicyclic ketal core was further functionalized by etherification and an alkene cross metathesis with an unsaturated alpha-phenylselenyl ester en route to completing the total synthesis.
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Affiliation(s)
- Christopher C Marvin
- Department of Chemistry, University of Wisconsin-Madison,1101 University Avenue, Madison, Wisconsin 53706-1322, USA
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35
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Affiliation(s)
- Christopher C. Marvin
- Department of Chemistry, University of WisconsinMadison, 1101 University Avenue, Madison, Wisconsin 53706-1322
| | - Eric A. Voight
- Department of Chemistry, University of WisconsinMadison, 1101 University Avenue, Madison, Wisconsin 53706-1322
| | - Steven D. Burke
- Department of Chemistry, University of WisconsinMadison, 1101 University Avenue, Madison, Wisconsin 53706-1322
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36
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Abstract
A series of six 2,5-disubstituted adjacent bis(tetrahydrofuran) stereoisomers with trans/erythro/cis, trans/threo/trans, or cis/threo/cis relative stereochemistry have been synthesized from known dihydroxycyclooctenes via ring opening/cross metathesis and Pd(0)-mediated asymmetric double cycloetherification. The stereochemistry of four of these isomers has been found in the biologically active annonaceous acetogenin natural products. [reaction: see text].
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Affiliation(s)
- Laura M Wysocki
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
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37
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Nelson DW, Gregg RJ, Kort ME, Perez-Medrano A, Voight EA, Wang Y, Grayson G, Namovic MT, Donnelly-Roberts DL, Niforatos W, Honore P, Jarvis MF, Faltynek CR, Carroll WA. Structure-activity relationship studies on a series of novel, substituted 1-benzyl-5-phenyltetrazole P2X7 antagonists. J Med Chem 2006; 49:3659-66. [PMID: 16759108 DOI: 10.1021/jm051202e] [Citation(s) in RCA: 195] [Impact Index Per Article: 10.8] [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: 11/28/2022]
Abstract
1-Benzyl-5-aryltetrazoles were discovered to be novel antagonists for the P2X(7) receptor. Structure-activity relationship (SAR) studies were conducted around both the benzyl and phenyl moieties. In addition, the importance of the regiochemical substitution on the tetrazole was examined. Compounds were evaluated for activity to inhibit calcium flux in both human and rat recombinant P2X(7) cell lines using fluorometric imaging plate reader technology. Analogues were also assayed for their ability to inhibit IL-1beta release and to inhibit P2X(7)-mediated pore formation in human THP-1 cells. Compound 15d was advanced to efficacy studies in a model of neuropathic pain where significant reversal of mechanical allodynia was observed at doses that did not affect motor coordination.
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Affiliation(s)
- Derek W Nelson
- Abbott Laboratories, Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Park, Illinois 60064-6101, USA.
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38
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Voight EA, Bodenstein MS, Ikemoto N, Kress MH. Efficient preparation of chiral diamines via Red-Al reduction of N-Boc-protected amino acid-derived secondary amides. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.01.056] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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39
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A. O'Doherty G, S. Mortensen M, C. Schmitt A, M. Smith C, A. Voight E. A Diastereoselective Silver(I) Promoted gem-Dibromocyclopropane Ring Opening Reaction via an Anchimeric Assisted Transannular Benzoate Migration. HETEROCYCLES 2006. [DOI: 10.3987/com-05-s(t)69] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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40
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Voight EA, Seradj H, Roethle PA, Burke SD. Synthesis of the bryostatin 1 northern hemisphere (C1-C16) via desymmetrization by ketalization/ring-closing metathesis. Org Lett 2005; 6:4045-8. [PMID: 15496095 DOI: 10.1021/ol0483044] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [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: 11/29/2022]
Abstract
[reaction: see text] Synthesis of the northern hemisphere (C1-C16) of bryostatin 1, a potent anticancer agent, has been accomplished in 14 steps and 11% overall yield via desymmetrization by ketalization/ring-closing metathesis. A 2,9-dioxabicyclo[3.3.1]nonane template facilitated stereoselective A-ring functionalization, while an efficient hetero-Diels-Alder reaction was used to elaborate the B-ring.
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Affiliation(s)
- Eric A Voight
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706-1396, USA
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41
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Abstract
An efficient synthesis of Hale and co-workers' C17-C27 bryostatin southern hemisphere intermediate has been accomplished in six steps and 33% overall yield from (R)-2-(benzyloxy)propanal. The synthesis features a one-pot DIBALH/HWE ester homologation as well as a novel acetonide rearrangement/glycal formation cascade.
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Affiliation(s)
- Eric A Voight
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706-1396, USA
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42
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43
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Abstract
Formal total syntheses of the naturally occurring deaminated sialic acids KDN (2), a potential oncofetal antigen, and N-acetylneuraminic acid (Neu5Ac, 1), the most naturally abundant sialic acid, have been accomplished in 46% and 9.3% overall yield, respectively, via a novel ketalization/ring-closing metathesis sequence. The rapid introduction of all oxygen and nitrogen functionality in a completely stereocontrolled manner exploited a rigid 6,8-dioxabicyclo[3.2.1]oct-2-ene template. The 2,7-anhydro-KDN derivative 40 served as an advanced intermediate in each of the two syntheses.
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Affiliation(s)
- Eric A Voight
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706-1396, USA
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44
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Abstract
[figure: see text] Formal synthesis of the naturally occurring deaminated sialic acid KDN, a potential oncofetal antigen, has been accomplished in 45% overall yield via a novel ketalization/ring-closing metathesis sequence. The rapid introduction of all oxygen functionality in a completely stereocontrolled manner exploited a rigid 6,8-dioxabicyclo[3.2.1]oct-2-ene ring system. This general synthetic strategy should provide access to a number of KDN and sialic acid analogues.
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Affiliation(s)
- S D Burke
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706-1396, USA.
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45
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Abstract
Current Occupational Therapy (OT) literature on managed care is limited to opinion or anecdotal experience. Questionnaires were mailed to 214 OTs practicing as hand therapists nationwide to test the null hypothesis that there was no difference in reimbursement or barriers to practice for OT services between patients enrolled in managed care organizations and those enrolled in fee-for-service insurance plans. Statistically significant results were obtained indicating greater barriers to reimbursement for OT under managed care. The primary effect has been the increased administrative demands it places on both therapists and patients. [Article copies available for a fee from The Haworth Document Delivery Service: 1-800-342-9678. E-mail address: getinfo@haworth.com].
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Affiliation(s)
- E A Varela-Burstein
- candidates for the Master of Science degree, Columbia University's Programs in Occupational Therapy
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