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Goodchild J, Chen YJ, Blythe J, Firth LC, Hirst E, Bess K, Bristow J, Willis J, Baines R, Cash F, Muehlebach M, Buchholz A, Rendler S, Earley F, Crossthwaite A. A novel class of insecticidal alkylsulfones are potent inhibitors of vesicular acetylcholine transport. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 201:105854. [PMID: 38685234 DOI: 10.1016/j.pestbp.2024.105854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 03/01/2024] [Accepted: 03/06/2024] [Indexed: 05/02/2024]
Abstract
Pyridine alkylsulfone derivatives typified by oxazosulfyl (Sumitomo Chemical Company Ltd.) and compound A2 (Syngenta) represent a new class of insecticides, with potent activity against several insect orders. Whilst the MOA of this class has been attributed to interaction with the voltage-gated sodium channel (VGSC), here we present strong evidence that their toxicity to insects is mediated primarily through inhibition of the vesicular acetylcholine transporter (VAChT). Alkylsulfone intoxication in insects is characterised by (i) a reduction in cholinergic synaptic transmission efficiency demonstrated by a depression of cercal afferent activity in giant-interneurone preparations of American cockroach (Periplaneta americana), (ii) selective block of cholinergic-transmission dependent post-synaptic potentials in the Drosophila giant-fibre pathway and (iii) abolition of miniature excitatory post-synaptic currents (mEPSCs) in an identified synapse in Drosophila larvae. Ligand-binding studies using a tritiated example compound ([3H]-A1) revealed a single saturable binding-site, with low nanomolar Kd value, in membrane fractions of green bottle fly (Lucilia sericata). Binding is inhibited by vesamicol and by several examples of a previously identified class of insecticidal compounds known to target VAChT, the spiroindolines. Displacement of this binding by analogues of the radioligand reveals a strong correlation with insecticidal potency. No specific binding was detected in untransformed PC12 cells but a PC12 line stably expressing Drosophila VAChT showed similar affinity for [3H]-A1 as that seen in fly head membrane preparations. Previously identified VAChT point mutations confer resistance to the spiroindoline class of insecticides in Drosophila by Gal-4/UAS directed expression in cholinergic neurones and by CRISPR gene-editing of VAChT, but none of these flies show detectable cross-resistance to this new chemical class. Oxazosulfyl was previously shown to stabilise voltage-gated sodium channels in their slow-inactivated conformation with an IC50 value of 12.3μM but inhibits binding of [3H]-A1 with approximately 5000 times greater potency. We believe this chemistry class represents a novel mode-of-action with high potential for invertebrate selectivity.
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Affiliation(s)
- James Goodchild
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK.
| | - Ying-Ju Chen
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Judith Blythe
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Lucy C Firth
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Elizabeth Hirst
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Kirsty Bess
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Julia Bristow
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Jenny Willis
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Richard Baines
- Division of Neuroscience, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK
| | - Francesca Cash
- Division of Neuroscience, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, UK
| | - Michel Muehlebach
- Syngenta Crop Protection AG, Crop Protection Research, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - Anke Buchholz
- Syngenta Crop Protection AG, Crop Protection Research, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - Sebastian Rendler
- Syngenta Crop Protection AG, Crop Protection Research, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - Fergus Earley
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Andrew Crossthwaite
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
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Lindman J, Gopalan G, Palo-Nieto C, Brandt P, Gising J, Larhed M. Diastereoselective Synthesis of N-Methylspiroindolines by Intramolecular Mizoroki-Heck Annulations. ACS OMEGA 2022; 7:32525-32535. [PMID: 36120037 PMCID: PMC9476516 DOI: 10.1021/acsomega.2c04111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
Spiroindolines represent a privileged structure in medicinal chemistry, although stereocontrol around the spirocarbon can be a synthetic challenge. Here we present a palladium(0)-catalyzed intramolecular Mizoroki-Heck annulation reaction from (+)-Vince lactam-derived cyclopentenyl-tethered 2-bromo-N-methylanilines for the formation of N-methylspiroindolines. A series of 14 N-methylspiroindolines were synthesized in 59-81% yield with diastereoselectivity >98%, which was rationalized by density functional theory calculations and confirmed through X-ray crystallography. One spiroindoline was converted to an N- and C-terminal protected rigidified unnatural amino acid, which could be orthogonally deprotected.
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Lindemann M, Dukic-Stefanovic S, Hinz S, Deuther-Conrad W, Teodoro R, Juhl C, Steinbach J, Brust P, Müller CE, Wenzel B. Synthesis of Novel Fluorinated Xanthine Derivatives with High Adenosine A 2B Receptor Binding Affinity. Pharmaceuticals (Basel) 2021; 14:ph14050485. [PMID: 34069548 PMCID: PMC8161391 DOI: 10.3390/ph14050485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/12/2021] [Accepted: 05/14/2021] [Indexed: 12/12/2022] Open
Abstract
The G protein-coupled adenosine A2B receptor is suggested to be involved in various pathological processes accompanied by increased levels of adenosine as found in inflammation, hypoxia, and cancer. Therefore, the adenosine A2B receptor is currently in focus as a novel target for cancer therapy as well as for noninvasive molecular imaging via positron emission tomography (PET). Aiming at the development of a radiotracer labeled with the PET radionuclide fluorine-18 for imaging the adenosine A2B receptor in brain tumors, one of the most potent and selective antagonists, the xanthine derivative PSB-603, was selected as a lead compound. As initial biodistribution studies in mice revealed a negligible brain uptake of [3H]PSB-603 (SUV3min: 0.2), structural modifications were performed to optimize the physicochemical properties regarding blood–brain barrier penetration. Two novel fluorinated derivatives bearing a 2-fluoropyridine (5) moiety and a 4-fluoro-piperidine (6) moiety were synthesized, and their affinity towards the four adenosine receptor subtypes was determined in competition binding assays. Both compounds showed high affinity towards the adenosine A2B receptor (Ki (5) = 9.97 ± 0.86 nM; Ki (6) = 12.3 ± 3.6 nM) with moderate selectivity versus the other adenosine receptor subtypes.
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Affiliation(s)
- Marcel Lindemann
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department of Neuroradiopharmaceuticals, 04318 Leipzig, Germany; (S.D.-S.); (W.D.-C.); (R.T.); (J.S.); (P.B.); (B.W.)
- Correspondence:
| | - Sladjana Dukic-Stefanovic
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department of Neuroradiopharmaceuticals, 04318 Leipzig, Germany; (S.D.-S.); (W.D.-C.); (R.T.); (J.S.); (P.B.); (B.W.)
- ROTOP Pharmaka GmbH, 01328 Dresden, Germany;
| | - Sonja Hinz
- Pharma Center Bonn, Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, 53121 Bonn, Germany; (S.H.); (C.E.M.)
| | - Winnie Deuther-Conrad
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department of Neuroradiopharmaceuticals, 04318 Leipzig, Germany; (S.D.-S.); (W.D.-C.); (R.T.); (J.S.); (P.B.); (B.W.)
| | - Rodrigo Teodoro
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department of Neuroradiopharmaceuticals, 04318 Leipzig, Germany; (S.D.-S.); (W.D.-C.); (R.T.); (J.S.); (P.B.); (B.W.)
| | | | - Jörg Steinbach
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department of Neuroradiopharmaceuticals, 04318 Leipzig, Germany; (S.D.-S.); (W.D.-C.); (R.T.); (J.S.); (P.B.); (B.W.)
| | - Peter Brust
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department of Neuroradiopharmaceuticals, 04318 Leipzig, Germany; (S.D.-S.); (W.D.-C.); (R.T.); (J.S.); (P.B.); (B.W.)
| | - Christa E. Müller
- Pharma Center Bonn, Pharmaceutical Institute, Pharmaceutical & Medicinal Chemistry, University of Bonn, 53121 Bonn, Germany; (S.H.); (C.E.M.)
| | - Barbara Wenzel
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department of Neuroradiopharmaceuticals, 04318 Leipzig, Germany; (S.D.-S.); (W.D.-C.); (R.T.); (J.S.); (P.B.); (B.W.)
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Bautista-Aguilera ÓM, Budni J, Mina F, Medeiros EB, Deuther-Conrad W, Entrena JM, Moraleda I, Iriepa I, López-Muñoz F, Marco-Contelles J. Contilisant, a Tetratarget Small Molecule for Alzheimer's Disease Therapy Combining Cholinesterase, Monoamine Oxidase Inhibition, and H3R Antagonism with S1R Agonism Profile. J Med Chem 2018; 61:6937-6943. [PMID: 29969030 DOI: 10.1021/acs.jmedchem.8b00848] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Contilisant, a permeable, antioxidant, and neuroprotectant agent, showing high nM affinity at H3R and excellent inhibition of the monoamine oxidases and cholinesterases, is an affine and selective S1R agonist in the nanomolar range, based on the binding affinity and functional experiment, a result confirmed by molecular modeling. In addition, contilisant significantly restores the cognitive deficit induced by Aβ1-42 in the radial maze assay in an in vivo Alzheimer's disease test, comparing very favorably with donepezil.
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Affiliation(s)
| | - Josiane Budni
- Laboratório de Neurologia Experimental , Universidade do Extremo Sul Catarinense , Av. Universitária , 1105 Criciúma , Brazil
| | - Francielle Mina
- Laboratório de Neurologia Experimental , Universidade do Extremo Sul Catarinense , Av. Universitária , 1105 Criciúma , Brazil
| | - Eduarda Behenck Medeiros
- Laboratório de Neurologia Experimental , Universidade do Extremo Sul Catarinense , Av. Universitária , 1105 Criciúma , Brazil
| | - Winnie Deuther-Conrad
- Department of Neuroradiopharmaceuticals, Institute of Radiopharmaceutical Cancer Research , Helmholtz-Zentrum Dresden-Rossendorf , 04318 Leipzig , Germany
| | - José M Entrena
- Animal Behavior Research Unit, Scientific Instrumentation Center , University of Granada , Parque Tecnológico de Ciencias de la Salud , 18100 Armilla , Granada , Spain
| | - Ignacio Moraleda
- Departamento de Química Orgánica and Química Inorgánica , Universidad de Alcalá , Ctra. Madrid-Barcelona, Km. 33,6 , 28871 Madrid , Spain
| | - Isabel Iriepa
- Departamento de Química Orgánica and Química Inorgánica , Universidad de Alcalá , Ctra. Madrid-Barcelona, Km. 33,6 , 28871 Madrid , Spain
| | - Francisco López-Muñoz
- Faculty of Health , Camilo José Cela University , 28692 Villanueva de la Cañada, Madrid , Spain
- Neuropsychopharmacology Unit , "Hospital 12 de Octubre" Research Institute , 28041 Madrid , Spain
| | - José Marco-Contelles
- Laboratory of Medicinal Chemistry, IQOG, CSIC , C/Juan de la Cierva 3 , 28006 Madrid , Spain
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Xia ZL, Zheng C, Wang SG, You SL. Catalytic Asymmetric Dearomatization of Indolyl Dihydropyridines through an Enamine Isomerization/Spirocyclization/Transfer Hydrogenation Sequence. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712435] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Zi-Lei Xia
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Shou-Guo Wang
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin 300072 China
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6
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Xia ZL, Zheng C, Wang SG, You SL. Catalytic Asymmetric Dearomatization of Indolyl Dihydropyridines through an Enamine Isomerization/Spirocyclization/Transfer Hydrogenation Sequence. Angew Chem Int Ed Engl 2018; 57:2653-2656. [DOI: 10.1002/anie.201712435] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Zi-Lei Xia
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Shou-Guo Wang
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin 300072 China
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7
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Gajaganti S, Bajpai S, Srivastava V, Singh S. An efficient, room temperature, oxygen radical anion (O2•−) mediated, one-pot, and multicomponent synthesis of spirooxindoles. CAN J CHEM 2017. [DOI: 10.1139/cjc-2017-0432] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The present report highlights an efficient use of oxygen radical anion to promote a room temperature multi-component synthesis of spirooxindoles (4a–4l) under mild reaction conditions. The potassium superoxide (KO2) and tetraethylammonium bromide (TEAB) combination generate the oxygen radical anion in situ to promote this transformation. This method offers a sustainable and direct access to the biologically important spirooxindole derivatives in good to excellent yields.
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Affiliation(s)
- Somaiah Gajaganti
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
| | - Shivam Bajpai
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
| | - Vandana Srivastava
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
| | - Sundaram Singh
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
- Department of Chemistry, Indian Institute of Technology — BHU, Varanasi 221 005, Uttar Pradesh, India
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