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Sagmeister P, Prieschl M, Kaldre D, Gadiyar C, Moessner C, Sedelmeier J, Williams JD, Kappe CO. Continuous Flow-Facilitated CB2 Agonist Synthesis, Part 1: Azidation and [3 + 2] Cycloaddition. Org Process Res Dev 2023. [DOI: 10.1021/acs.oprd.3c00035] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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Prieschl M, Sagmeister P, Moessner C, Sedelmeier J, Williams JD, Kappe CO. Continuous Flow-Facilitated CB2 Agonist Synthesis, Part 2: Cyclization, Chlorination, and Amination. Org Process Res Dev 2023. [DOI: 10.1021/acs.oprd.3c00036] [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: 03/31/2023]
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3
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Lamerz J, Danila OM, Schuster A, Burren J, Moessner C, Göhring W, Rege P, Stahr H, Hildbrand S, Coleman D. An Improved Impact Ratio for Identifying Critical Process Parameters in Pharmaceutical Manufacturing Processes. PDA J Pharm Sci Technol 2022; 76:497-508. [PMID: 35840347 DOI: 10.5731/pdajpst.2021.012662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The identification of critical process parameters in biologics and small molecule process development is a key element of quality by design. The objectivity and consistency of procedures to identify critical process parameters can be improved with the use of impact ratios. Impact ratios quantify a process parameter's practical effect on a critical quality attribute relative to the critical quality attribute's acceptance limits. If the impact ratio is large, i.e., exceeds a predefined impact ratio threshold, the recommendation is to classify the process parameter as a critical process parameter. This article introduces an improved and mathematically well-defined impact ratio. Benefits of this impact ratio are a consistent interpretation for many scenarios commonly encountered in practice, high suitability to automation, and the possibility of standardizing on a single impact ratio definition for pharmaceutical manufacturing.
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Affiliation(s)
- Jens Lamerz
- Nonclinical Biostatistics, F. Hoffmann-La Roche Ltd, Basel, Switzerland;
| | | | - Andreas Schuster
- Process Chemistry & Catalysis, Synthetic Molecules Technical Development, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Janine Burren
- Nonclinical Biostatistics, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Christian Moessner
- Process Chemistry & Catalysis, Synthetic Molecules Technical Development, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Wolfgang Göhring
- Process Chemistry & Catalysis, Synthetic Molecules Technical Development, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Pankaj Rege
- Pharma Technical Regulatory, F. Hoffmann-La Roche Ltd, Basel, Switzerland; and
| | - Helmut Stahr
- Process Chemistry & Catalysis, Synthetic Molecules Technical Development, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Stefan Hildbrand
- Process Chemistry & Catalysis, Synthetic Molecules Technical Development, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Daniel Coleman
- Nonclinical Biostatistics, Genentech, Inc., South San Francisco, CA, USA
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Sagmeister P, Kaldre D, Sedelmeier J, Moessner C, Püntener K, Kummli D, Williams JD, Kappe CO. Intensified Continuous Flow Synthesis and Workup of 1,5-Disubstituted Tetrazoles Enhanced by Real-Time Process Analytics. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.1c00096] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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)
- Peter Sagmeister
- Center for Continuous Flow Synthesis and Processing (CC FLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, 8010 Graz, Austria
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, 8010 Graz, Austria
| | - Dainis Kaldre
- Department of Process Chemistry & Catalysis, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Joerg Sedelmeier
- Department of Process Chemistry & Catalysis, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Christian Moessner
- Department of Process Chemistry & Catalysis, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Kurt Püntener
- Department of Process Chemistry & Catalysis, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Dominique Kummli
- Department of Process Chemistry & Catalysis, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Jason D. Williams
- Center for Continuous Flow Synthesis and Processing (CC FLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, 8010 Graz, Austria
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, 8010 Graz, Austria
| | - C. Oliver Kappe
- Center for Continuous Flow Synthesis and Processing (CC FLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, 8010 Graz, Austria
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, 8010 Graz, Austria
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Rimmler G, Alker A, Bosco M, Diodone R, Fishlock D, Hildbrand S, Kuhn B, Moessner C, Peters C, Rege PD, Schantz M. Practical Synthesis of MDM2 Antagonist RG7388. Part 2: Development of the Cu(I) Catalyzed [3 + 2] Asymmetric Cycloaddition Process for the Manufacture of Idasanutlin. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.6b00319] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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)
- Gösta Rimmler
- Small
Molecules Technical Development, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Andre Alker
- Therapeutic
Modalities, Roche Pharma Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Marcello Bosco
- Small
Molecules Technical Development, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Ralph Diodone
- Small
Molecules Technical Development, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Dan Fishlock
- Small
Molecules Technical Development, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Stefan Hildbrand
- Small
Molecules Technical Development, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Bernd Kuhn
- Therapeutic
Modalities, Roche Pharma Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Christian Moessner
- Small
Molecules Technical Development, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Carsten Peters
- Small
Molecules Technical Development, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Pankaj D. Rege
- Small
Molecules Technical Development, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
| | - Markus Schantz
- Small
Molecules Technical Development, F. Hoffmann-La Roche Ltd., 4070 Basel, Switzerland
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Abele S, Funel JA, Schmidt G, Moessner C, Schwaninger M, Marti R. Daring the Challenge and Thinking Big: The Value of Early Process R&D. Chimia (Aarau) 2016; 70:634. [DOI: 10.2533/chimia.2016.502add] [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: 11/19/2022] Open
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Abele S, Funel JA, Schmidt G, Moessner C, Schwaninger M, Marti R. Daring the Challenge and Thinking Big: The Value of Early Process R&D. Chimia (Aarau) 2016; 70:502-11. [PMID: 27561612 DOI: 10.2533/chimia.2016.502] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The production of the L/T channel blocker ACT-280778 required the enantiomerically pure 5-phenylbicyclo[2.2.2]oct-5-en-2-one (1) as key building block. As the published routes towards 1 are very low yielding (<0.5% yield) and comprise many steps that are not acceptable for scale-up, a series of processes to 1 was developed to match the increasing requirements from first kg-batches to clinical supplies. The three routes are characterized by an individual asset. (1) The first route contains a scale-up of a Diels-Alder reaction with highly reactive reagents and afforded 90 kg enantiomerically pure 1. To mitigate safety risks, a flow reactor was developed for the high-temperature Diels-Alder reaction. This route relied on an efficient enantiomer separation on a ¼-ton scale by HPLC. (2) A Crystallization Induced Diastereomer Transformation (CIDT) during an intramolecular aldol reaction was the pivotal step of a first enantioselective route that starts with the Shibasaki reaction. (3) The 2(nd) enantioselective route represents a rare example of organocatalysis on scale and allowed to skip six out of nine steps with a significant impact on the cost of goods. This simple way to 1 opened up a short synthesis of Hayashi's chiral diene ligands (bod*) that were so far lacking an affordable access. Some of these novel C1-symmetrical dienes have shown very high enantioselectivities in Rh-catalyzed additions of arylboronates.
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Affiliation(s)
- Stefan Abele
- Chemistry Process R&D Actelion Pharmaceuticals Ltd Gewerbestrasse 16, CH-4123 Allschwil, Switzerland.
| | - Jacques-Alexis Funel
- Chemistry Process R&D Actelion Pharmaceuticals Ltd Gewerbestrasse 16, CH-4123 Allschwil, Switzerland
| | - Gunther Schmidt
- Chemistry Process R&D Actelion Pharmaceuticals Ltd Gewerbestrasse 16, CH-4123 Allschwil, Switzerland
| | - Christian Moessner
- Chemical Development and Catalysis Solvias AG Römerpark 2, CH-4303 Kaiseraugst, Switzerland; Pharmaceuticals Division Chemical Development & Supply F. Hoffmann-La Roche AG
| | - Mischa Schwaninger
- Swissi Process Safety GmbH Schwarzwaldallee 215, CH-4002 Basel, Switzerland
| | - Roger Marti
- HES-SO Haute école spécialisée de Suisse occidentale Haute école d'ingénierie et d'architecture de Fribourg Institut ChemTech, Bd Pérolles 80, CH-1700 Fribourg, Switzerland
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Affiliation(s)
- Stefan Abele
- Process Research Chemistry, Actelion Pharmaceuticals Ltd., Gewerbestrasse 16, CH-4123
Allschwil, Switzerland
| | - Roman Inauen
- Process Research Chemistry, Actelion Pharmaceuticals Ltd., Gewerbestrasse 16, CH-4123
Allschwil, Switzerland
| | - Dirk Spielvogel
- Chemical Development and Catalysis, Solvias AG, Römerpark 2, CH-4303 Kaiseraugst,
Switzerland
| | - Christian Moessner
- Chemical Development and Catalysis, Solvias AG, Römerpark 2, CH-4303 Kaiseraugst,
Switzerland
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Paterson I, Anderson EA, Dalby SM, Lim JH, Maltas P, Loiseleur O, Genovino J, Moessner C. The stereocontrolled total synthesis of spirastrellolide A methyl ester. Expedient construction of the key fragments. Org Biomol Chem 2012; 10:5861-72. [PMID: 22504866 DOI: 10.1039/c2ob25100k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Due to a combination of their promising anticancer properties, limited supply from the marine sponge source and their unprecedented molecular architecture, spirastrellolides represent attractive and challenging synthetic targets. A modular strategy for the synthesis of spirastrellolide A methyl ester, which allowed for the initial stereochemical uncertainties in the assigned structure was adopted, based on the envisaged sequential coupling of a series of suitably functionalised fragments; in this first paper, full details of the synthesis of these fragments are described. The pivotal C26-C40 DEF bis-spiroacetal was assembled by a double Sharpless asymmetric dihydroxylation/acetalisation cascade process on a linear diene intermediate, configuring the C31 and C35 acetal centres under suitably mild acidic conditions. A C1-C16 alkyne fragment was constructed by application of an oxy-Michael reaction to introduce the A-ring tetrahydropyran, a Sakurai allylation to install the C9 hydroxyl, and a 1,4-syn boron aldol/directed reduction sequence to establish the C11 and C13 stereocentres. Two different coupling strategies were investigated to elaborate the C26-C40 DEF fragment, involving either a C17-C25 sulfone or a C17-C24 vinyl iodide, each of which was prepared using an Evans glycolate aldol reaction. The remaining C43-C47 vinyl stannane fragment required for introduction of the unsaturated side chain was prepared from (R)-malic acid.
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Affiliation(s)
- Ian Paterson
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
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Paterson I, Anderson EA, Dalby SM, Lim JH, Genovino J, Maltas P, Moessner C. Total synthesis of spirastrellolide A methyl ester--part 1: Synthesis of an advanced C17-C40 bis-spiroacetal subunit. Angew Chem Int Ed Engl 2008; 47:3016-20. [PMID: 18307178 DOI: 10.1002/anie.200705565] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ian Paterson
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
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Paterson I, Anderson EA, Dalby SM, Lim JH, Genovino J, Maltas P, Moessner C. Total synthesis of spirastrellolide A methyl ester--part 2: Subunit union and completion of the synthesis. Angew Chem Int Ed Engl 2008; 47:3021-5. [PMID: 18307179 DOI: 10.1002/anie.200705566] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ian Paterson
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
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Paterson I, Anderson E, Dalby S, Lim J, Genovino J, Maltas P, Moessner C. Total Synthesis of Spirastrellolide A Methyl Ester—Part 1: Synthesis of an Advanced C17–C40 Bis-spiroacetal Subunit. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200705565] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Paterson I, Anderson E, Dalby S, Lim J, Genovino J, Maltas P, Moessner C. Total Synthesis of Spirastrellolide A Methyl Ester—Part 2: Subunit Union and Completion of the Synthesis. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200705566] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Paterson I, Anderson EA, Dalby SM, Genovino J, Lim JH, Moessner C. Synthesis of two diastereomeric C1-C22 fragments of spirastrellolide A. Chem Commun (Camb) 2007:1852-4. [PMID: 17476409 DOI: 10.1039/b700827a] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [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: 11/21/2022]
Abstract
The optimisation of a synthetic strategy towards the ABC segment of the cytotoxic macrolide spirastrellolide A is reported, together with its application to the synthesis of two diastereomeric C(1)-C(22) fragments for stereochemical correlation purposes with a putative spirastrellolide degradation product.
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Affiliation(s)
- Ian Paterson
- University Chemical Laboratory, Lensfield Road, Cambridge, UK.
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Paterson I, Anderson EA, Dalby SM, Lim JH, Maltas P, Moessner C. Synthesis of the DEF-bis-spiroacetal of spirastrellolide A exploiting a double asymmetric dihydroxylation/spiroacetalisation strategy. Chem Commun (Camb) 2006:4186-8. [PMID: 17031426 DOI: 10.1039/b612697a] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient synthesis of the C(26)-C(40) tricyclic [5,6,6]-bis-spiroacetal segment of the marine macrolide spirastrellolide A has been developed, exploiting a novel double Sharpless asymmetric dihydroxylation/spiroacetalisation sequence.
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Affiliation(s)
- Ian Paterson
- University Chemical Laboratory, Lensfield Road, Cambridge, UK CB2 1EW.
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Affiliation(s)
- Christian Moessner
- Institut für Organische Chemie, Rheinisch-Westfälische Technische Hochschule Aachen, Landoltweg 1, 52056 Aachen, Germany
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Abstract
[reaction: see text] A simple and mild copper salt-catalyzed N-arylation of sulfoximines in high yields is reported. Cu(OAc)(2) activates aryl boronic acids for the reaction with NH-sulfoximines without additional base or heating. Furthermore, this new method allows the preparation of N-arylated sulfoximines, which have previously been more difficult to access.
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Affiliation(s)
- Christian Moessner
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
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Cho GY, Rémy P, Jansson J, Moessner C, Bolm C. Copper-Mediated Cross-Coupling Reactions of N-Unsubstituted Sulfoximines and Aryl Halides. Org Lett 2004; 6:3293-6. [PMID: 15355035 DOI: 10.1021/ol048806h] [Citation(s) in RCA: 94] [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: 11/28/2022]
Abstract
[reaction: see text] Copper-mediated cross-coupling reactions of sulfoximines with aryl iodides and aryl bromides provide N-arylated sulfoximines in high yields. The method is complementary to the known palladium-catalyzed N-arylation and allows the preparation of N-arylated sulfoximines, which have previously been inaccessible.
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Affiliation(s)
- Gae Young Cho
- Institute of Organic Chemistry, RWTH Aachen University, Professor-Pirlet-Str. 1, D-52056 Aachen, Germany
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Bolm C, Frison JC, Le Paih J, Moessner C. Synthesis of chiral 2,2′-dipyridylamines and their use in the copper-catalyzed asymmetric allylic oxidation of cyclohexene. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.05.006] [Citation(s) in RCA: 14] [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: 10/26/2022]
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