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Orukotan WE, Palate KY, Pogrányi B, Bobinski P, Epton RG, Duff L, Whitwood AC, Grogan G, Lynam JM, Unsworth WP. Divergent Cascade Ring-Expansion Reactions of Acryloyl Imides. Chemistry 2024; 30:e202303270. [PMID: 37987097 DOI: 10.1002/chem.202303270] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 11/16/2023] [Accepted: 11/21/2023] [Indexed: 11/22/2023]
Abstract
Macrocyclic and medium-sized ring ketones, lactones and lactams can all be made from common acryloyl imide starting materials through divergent, one-pot cascade ring-expansion reactions. Following either conjugate addition with an amine or nitromethane, or osmium(VIII)-catalysed dihydoxylation, rearrangement through a four-atom ring expansion takes place spontaneously to form the ring expanded products. A second ring expansion can also be performed following a second iteration of imide formation and alkene functionalisation/ring expansion. In the dihydroxylation series, three- or four-atom ring expansion can be performed selectively, depending on whether the reaction is under kinetic or thermodynamic control.
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Affiliation(s)
- Will E Orukotan
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | | | - Balázs Pogrányi
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | - Philipp Bobinski
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Ryan G Epton
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | - Lee Duff
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | | | - Gideon Grogan
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | - Jason M Lynam
- Department of Chemistry, University of York, York, YO10 5DD, UK
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2
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Pogrányi B, Mielke T, Díaz-Rodríguez A, Cartwright J, Unsworth WP, Grogan G. Preparative-Scale Biocatalytic Oxygenation of N-Heterocycles with a Lyophilized Peroxygenase Catalyst. Angew Chem Int Ed Engl 2023; 62:e202214759. [PMID: 36453718 PMCID: PMC10107140 DOI: 10.1002/anie.202214759] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/17/2022] [Accepted: 11/30/2022] [Indexed: 12/02/2022]
Abstract
A lyophilized preparation of an unspecific peroxygenase variant from Agrocybe aegerita (rAaeUPO-PaDa-I-H) is a highly effective catalyst for the oxygenation of a diverse range of N-heterocyclic compounds. Scalable biocatalytic oxygenations (27 preparative examples, ca. 100 mg scale) have been developed across a wide range of substrates, including alkyl pyridines, bicyclic N-heterocycles and indoles. H2 O2 is the only stoichiometric oxidant needed, without auxiliary electron transport proteins, which is key to the practicality of the method. Reaction outcomes can be altered depending on whether hydrogen peroxide was delivered by syringe pump or through in situ generation using an alcohol oxidase from Pichia pastoris (PpAOX) and methanol as a co-substrate. Good synthetic yields (up to 84 %), regioselectivity and enantioselectivity (up to 99 % ee) were observed in some cases, highlighting the promise of UPOs as practical, versatile and scalable oxygenation biocatalysts.
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Affiliation(s)
- Balázs Pogrányi
- Department of Chemistry, University of York, Heslington York, YO10 5DD, UK
| | - Tamara Mielke
- Department of Chemistry, University of York, Heslington York, YO10 5DD, UK
| | - Alba Díaz-Rodríguez
- GSK Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Jared Cartwright
- Department of Biology, University of York, Heslington York, YO10 5DD, UK
| | - William P Unsworth
- Department of Chemistry, University of York, Heslington York, YO10 5DD, UK
| | - Gideon Grogan
- Department of Chemistry, University of York, Heslington York, YO10 5DD, UK
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3
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Gilio A, Thorpe TW, Heyam A, Petchey MR, Pogrányi B, France SP, Howard RM, Karmilowicz MJ, Lewis R, Turner N, Grogan G. A Reductive Aminase Switches to Imine Reductase Mode for a Bulky Amine Substrate. ACS Catal 2023; 13:1669-1677. [PMID: 36776386 PMCID: PMC9903292 DOI: 10.1021/acscatal.2c06066] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Indexed: 01/15/2023]
Abstract
Imine reductases (IREDs) catalyze the asymmetric reduction of cyclic imines, but also in some cases the coupling of ketones and amines to form secondary amine products in an enzyme-catalyzed reductive amination (RedAm) reaction. Enzymatic RedAm reactions have typically used small hydrophobic amines, but many interesting pharmaceutical targets require that larger amines be used in these coupling reactions. Following the identification of IR77 from Ensifer adhaerens as a promising biocatalyst for the reductive amination of cyclohexanone with pyrrolidine, we have characterized the ability of this enzyme to catalyze couplings with larger bicyclic amines such as isoindoline and octahydrocyclopenta(c)pyrrole. By comparing the activity of IR77 with reductions using sodium cyanoborohydride in water, it was shown that, while the coupling of cyclohexanone and pyrrolidine involved at least some element of reductive amination, the amination with the larger amines likely occurred ex situ, with the imine recruited from solution for enzyme reduction. The structure of IR77 was determined, and using this as a basis, structure-guided mutagenesis, coupled with point mutations selecting improving amino acid sites suggested by other groups, permitted the identification of a mutant A208N with improved activity for amine product formation. Improvements in conversion were attributed to greater enzyme stability as revealed by X-ray crystallography and nano differential scanning fluorimetry. The mutant IR77-A208N was applied to the preparative scale amination of cyclohexanone at 50 mM concentration, with 1.2 equiv of three larger amines, in isolated yields of up to 93%.
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Affiliation(s)
- Amelia
K. Gilio
- Department
of Chemistry, University of York, Heslington, York YO10 5DD, U.K.
| | - Thomas W. Thorpe
- School
of Chemistry, Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K.
| | - Alex Heyam
- Department
of Chemistry, University of York, Heslington, York YO10 5DD, U.K.
| | - Mark R. Petchey
- Department
of Chemistry, University of York, Heslington, York YO10 5DD, U.K.
| | - Balázs Pogrányi
- Department
of Chemistry, University of York, Heslington, York YO10 5DD, U.K.
| | - Scott P. France
- Pfizer
Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - Roger M. Howard
- Pfizer
Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - Michael J. Karmilowicz
- Pfizer
Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - Russell Lewis
- Pfizer
Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - Nicholas Turner
- School
of Chemistry, Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K.
| | - Gideon Grogan
- Department
of Chemistry, University of York, Heslington, York YO10 5DD, U.K.,
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4
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Pogrányi B, Mielke TF, Díaz-Rodriguez A, Cartwright J, Unsworth WP, Grogan G. Preparative‐Scale Biocatalytic Oxygenation of N‐Heterocycles with a Lyophilized Peroxygenase Catalyst. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202214759] [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: 12/05/2022]
Affiliation(s)
- Balázs Pogrányi
- University of York Chemistry University of YorkHeslington YO10 5DD York UNITED KINGDOM
| | - Tamara F Mielke
- University of York Chemistry University of YorkHeslington YO10 5DD York UNITED KINGDOM
| | - Alba Díaz-Rodriguez
- GSK: GlaxoSmithKline Plc GSK Medicines Research Centre Gunnel's WoodStevenageHertfordshire SG1 2NY UNITED KINGDOM
| | - Jared Cartwright
- University of York Biology University of YorkHeslington YO10 5DD York UNITED KINGDOM
| | - William P Unsworth
- University of York Chemistry University of YorkHeslington YO10 5DD York UNITED KINGDOM
| | - Gideon Grogan
- University of York Department of Chemistry Chemistry Heslington YO10 5DD York UNITED KINGDOM
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5
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Pogrányi B, Unsworth WP, Grogan G. Biocatalytic activation of diazirines for carbene-transfer reactions. Chem 2022. [DOI: 10.1016/j.chempr.2022.06.019] [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: 11/29/2022]
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Varró G, Pálchuber P, Pogrányi B, Simon A, Hegedűs L, Kádas I. (±)-trans-Dihydronarciclasine and (±)-trans-dihydrolycoricidine analogues modified in their ring A: Evaluation of their anticancer activity and a SAR study. Eur J Med Chem 2019; 173:76-89. [PMID: 30986573 DOI: 10.1016/j.ejmech.2019.04.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 02/27/2019] [Revised: 04/03/2019] [Accepted: 04/03/2019] [Indexed: 10/27/2022]
Abstract
A series of (±)-trans-dihydronarciclasine and (±)-trans-dihydrolycoricidine derivatives with variously substituted ring A was synthesised and evaluated for their antiproliferative activity against 60 human tumour cell lines (NCI60), representing leukemia, melanoma, and cancers of the lung, colon, brain, ovary, breast, prostate, as well as kidney in vitro. Among the 13 alkaloids screened, (±)-trans-dihydronarciclasine showed the highest potency as a cytotoxic molecule. A structure-activity relationship (SAR) study indicated that the presence of a hydroxy group at position 7 and a rigid, 1,3-benzodioxole scaffold were essential for the antiproliferative activity.
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Affiliation(s)
- Gábor Varró
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, H-1111, Budapest, Hungary; Gedeon Richter Plc., Gyömrői út 19-21, H-1103, Budapest, Hungary
| | - Péter Pálchuber
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, H-1111, Budapest, Hungary
| | - Balázs Pogrányi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, H-1111, Budapest, Hungary
| | - András Simon
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szt. Gellért tér 4, H-1111, Budapest, Hungary
| | - László Hegedűs
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, H-1111, Budapest, Hungary
| | - István Kádas
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, H-1111, Budapest, Hungary.
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Varró G, Pogrányi B, Grün A, Simon A, Hegedűs L, Kádas I. Stereoselective synthesis of trans-dihydronarciclasine derivatives containing a 1,4-benzodioxane moiety. Monatsh Chem 2018; 149:2265-2285. [PMID: 32214482 PMCID: PMC7087796 DOI: 10.1007/s00706-018-2287-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 09/03/2018] [Indexed: 10/31/2022]
Abstract
ABSTRACT Some new trans-dihydronarciclasine derivatives containing a 1,4-benzodioxane moiety were stereoselectively synthesised using our feasible and efficient method developed recently. These new phenanthridone alkaloid analogues were obtained in both racemic and optically active forms. High enantioselectivities (up to 99% ee) were achieved by applying (8S,9S)-9-amino(9-deoxy)epiquinine as an organocatalyst. Due to a side reaction, various methoxyphenanthridine regioisomers were also prepared which afforded further synthetic trans-dihydronarciclasine analogues modified in the ring A of the phenanthridone scaffold. GRAPHICAL ABSTRACT
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Affiliation(s)
- Gábor Varró
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, Budapest, 1111 Hungary
- Gedeon Richter Plc., Gyömrői út 19-21, Budapest, 1103 Hungary
| | - Balázs Pogrányi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, Budapest, 1111 Hungary
| | - Alajos Grün
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, Budapest, 1111 Hungary
| | - András Simon
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szt. Gellért tér 4, Budapest, 1111 Hungary
| | - László Hegedűs
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, Budapest, 1111 Hungary
| | - István Kádas
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, Budapest, 1111 Hungary
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