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Novakov IA, Sheikin DS, Navrotskii MB, Mkrtchyan AS, Brunilina LL, Balakin KV. Dexoxadrol and its bioisosteres: structure, synthesis, and pharmacological activity. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-2946-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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2
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Temme L, Schepmann D, Schreiber JA, Frehland B, Wünsch B. Comparative Pharmacological Study of Common NMDA Receptor Open Channel Blockers Regarding Their Affinity and Functional Activity toward GluN2A and GluN2B NMDA Receptors. ChemMedChem 2018; 13:446-452. [DOI: 10.1002/cmdc.201700810] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 01/23/2018] [Indexed: 12/24/2022]
Affiliation(s)
- Louisa Temme
- Institut für Pharmazeutische und Medizinische Chemie der Universität Münster; Corrensstraße 48 48149 Münster Germany
| | - Dirk Schepmann
- Institut für Pharmazeutische und Medizinische Chemie der Universität Münster; Corrensstraße 48 48149 Münster Germany
| | - Julian A. Schreiber
- Institut für Pharmazeutische und Medizinische Chemie der Universität Münster; Corrensstraße 48 48149 Münster Germany
| | - Bastian Frehland
- Institut für Pharmazeutische und Medizinische Chemie der Universität Münster; Corrensstraße 48 48149 Münster Germany
| | - Bernhard Wünsch
- Institut für Pharmazeutische und Medizinische Chemie der Universität Münster; Corrensstraße 48 48149 Münster Germany
- Cells-in-Motion Cluster of Excellence (EXC 1003-CiM); Westfälische Wilhelms-Universität Münster; Germany
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3
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Double Intramolecular Transacetalization of Polyhydroxy Acetals: Synthesis of Conformationally-Restricted 1,3-Dioxanes with Axially-Oriented Phenyl Moiety. Molecules 2016; 21:molecules21111503. [PMID: 27834880 PMCID: PMC6274033 DOI: 10.3390/molecules21111503] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 10/31/2016] [Accepted: 11/03/2016] [Indexed: 11/19/2022] Open
Abstract
The synthesis of conformationally-restricted 1,3-dioxanes with a phenyl moiety fixed in an axial orientation at the acetalic center is described. Starting with diethyl 3-hydroxyglutarate (15), benzaldehyde acetal 12a and acetophenone ketal 12b bearing a protected 1,3,5-trihydroxypentyl side chain in the o-position were prepared. The first acid-catalyzed intramolecular transacetalization gave a mixture of diastereomeric 2-benzofurans 18 (ratio of diastereomers 2:2:1:1). After OH group deprotection, the second intramolecular transacetalization afforded tricyclic alcohol 14a (2-(1,5-epoxy-1,3,4,5-tetrahydro-2-benzoxepin-3-yl]ethan-1-ol). Analogous cyclizations led to the corresponding silyl ether 22a (19%) and azide 23a (13%). Whereas tricyclic alcohol 14a was obtained as a 1:1 mixture of diastereomers, the silyl ether 22a and the azide 23a afforded only one diastereomer. This observation indicates a faster cyclization of the minor diastereomers providing the thermodynamically-favored compounds with equatorially-oriented substituents in the 3-position of the tricyclic 1,5-epoxy-2-benzoxepine system. In general, acetophenone-derived ketalic compounds (b-series) required very mild reaction conditions and gave lower yields than the corresponding acetalic compounds (a-series).
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4
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Bhat C, Tilve SG. A concise diastereoselective approach to (+)-dexoxadrol, (−)-epi-dexoxadrol, (−)-conhydrine and (+)-lentiginosine from (−)-pipecolinic acid. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.10.082] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Köhler J, Bergander K, Fabian J, Schepmann D, Wünsch B. Enantiomerically Pure 1,3-Dioxanes as Highly Selective NMDA and σ1 Receptor Ligands. J Med Chem 2012; 55:8953-7. [DOI: 10.1021/jm301166m] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jens Köhler
- Institut für Pharmazeutische
und Medizinische Chemie, Westfälische Wilhelms-Universität
Münster, Hittorfstraße 58-62, D-48149 Münster,
Germany
| | - Klaus Bergander
- Organisch-Chemisches
Institut,
Westfälische Wilhelms-Universität Münster, Corrensstraße
40, D-48149 Münster, Germany
| | - Jörg Fabian
- Institut für Pharmazeutische
und Medizinische Chemie, Westfälische Wilhelms-Universität
Münster, Hittorfstraße 58-62, D-48149 Münster,
Germany
| | - Dirk Schepmann
- Institut für Pharmazeutische
und Medizinische Chemie, Westfälische Wilhelms-Universität
Münster, Hittorfstraße 58-62, D-48149 Münster,
Germany
| | - Bernhard Wünsch
- Institut für Pharmazeutische
und Medizinische Chemie, Westfälische Wilhelms-Universität
Münster, Hittorfstraße 58-62, D-48149 Münster,
Germany
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6
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Haleema S, Sasi PV, Ibnusaud I, Polavarapu PL, Kagan HB. Enantiomerically pure compounds related to chiral hydroxy acids derived from renewable resources. RSC Adv 2012. [DOI: 10.1039/c2ra21205f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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7
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Synthesis of 4-(aminoalkyl) substituted 1,3-dioxanes as potent NMDA and σ receptor antagonists. Eur J Med Chem 2011; 46:2157-69. [PMID: 21444132 DOI: 10.1016/j.ejmech.2011.02.070] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Revised: 02/25/2011] [Accepted: 02/26/2011] [Indexed: 11/21/2022]
Abstract
Elongation of the distance between the oxygen heterocycle and the basic amino moiety or ring expansion of the oxygen heterocycle of the NMDA receptor antagonists dexoxadrol and etoxadrol led to compounds with promising NMDA receptor affinity. Herein the combination of both structural features, i.e. elongation of the O-heterocycle--amine distance with a 1,3-dioxane ring is envisaged. The synthesis of aminoethyl-1,3-dioxanes 13, 22, 23 and 29 was performed by transacetalization of various acetals with pentane-1,3,5-triol, activation of the remaining free OH moiety with tosyl chloride and subsequent nucleophilic substitution. The corresponding 3-aminopropyl derivatives 33-35 were prepared by substitution of the tosylates with KCN and LiAlH4 reduction. The highest NMDA receptor affinity was found for 1,3-dioxanes with a phenyl and an ethyl residue at the acetalic position (23) followed by diphenyl (22) and monophenyl derivatives (13). Generally the NMDA affinity of primary amines is higher than the NMDA affinity of secondary and tertiary amines. Altogether the primary amine 23a (Ki=24 nM) represents the most promising NMDA receptor antagonist of this series exceeding the NMDA affinity of the mono-homologues (2-aminoethyl)-1,3-dioxolanes (3,4) and (aminomethyl)-1,3-dioxanes (5,6). Whereas the primary amine 23a turned out to be selective against σ1 and σ2 receptors the benzylamine 13d was identified as potent (Ki=19 nM) and selective σ1 antagonist, which showed extraordinarily high antiallodynic activity in the capsaicin assay.
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8
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A Novel Method for Monitoring the Transesterification Reaction of Oil in Biodiesel Production by Estimation of Glycerol. J AM OIL CHEM SOC 2010. [DOI: 10.1007/s11746-010-1549-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Banerjee A, Fröhlich R, Schepmann D, Wünsch B. Synthesis and NMDA receptor affinity of dexoxadrol analogues with modifications in position 4 of the piperidine ring. MEDCHEMCOMM 2010. [DOI: 10.1039/c0md00017e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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10
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Sax M, Fröhlich R, Schepmann D, Wünsch B. Synthesis and NMDA Receptor Affinity of Ring and Side Chain Homologues of Dexoxadrol. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800727] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Sax M, Ebert K, Schepmann D, Wibbeling B, Wünsch B. Synthesis and NMDA-receptor affinity of 4-oxo-dexoxadrol derivatives. Bioorg Med Chem 2006; 14:5955-62. [PMID: 16750371 DOI: 10.1016/j.bmc.2006.05.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2006] [Revised: 05/04/2006] [Accepted: 05/15/2006] [Indexed: 11/19/2022]
Abstract
A synthesis of novel dexoxadrol analogues is described, which allows modifications of the piperidine substructure. The key step of the synthesis is a hetero Diels-Alder reaction of the imine 12 with Danishefsky's diene 6. After separation of the diastereomeric piperidones 14a and 14b, the relative configuration of the unlike configured piperidone 15b was determined by X-ray crystal structure analysis. In receptor binding studies the like configured secondary amine 15a (racemate) showed considerable affinity toward the phencyclidine binding site of the NMDA receptor (Ki=470 nM).
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Affiliation(s)
- Michael Sax
- Institut für Pharmazeutische und Medizinische Chemie, Westfälische Wilhelms-Universität Münster, Hittorfstr. 58-62, D-48149 Münster, Germany
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12
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Aepkers M, Wünsch B. Structure–affinity relationship studies of non-competitive NMDA receptor antagonists derived from dexoxadrol and etoxadrol. Bioorg Med Chem 2005; 13:6836-49. [PMID: 16169732 DOI: 10.1016/j.bmc.2005.07.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2005] [Accepted: 07/26/2005] [Indexed: 11/18/2022]
Abstract
The synthesis and NMDA receptor affinity of ring and side-chain homologues of etoxadrol and dexoxadrol are described. For the regioselective synthesis of etoxadrol homologues, the regioisomeric 4-azidobutanediols (+/-)-9 and (+/-)-14 were employed. A synthesis of the enantiomerically pure azidobutanediols (S)-, (R)-9 and (S)-, (R)-14 was developed and the homochiral building blocks were used for the synthesis of enantiomerically pure etoxadrol and dexoxadrol homologues. The affinity of the racemic and enantiomerically pure primary amines toward the phencyclidine binding site of the NMDA receptor was investigated in receptor binding studies with tritium labeled [3H]-(+)-MK-801 as radioligand. Benzaldehyde derivatives (+/-)-12a, (+/-)-13a, and (+/-)-16a bearing a proton at the acetalic position do not interact significantly with the NMDA receptor. An enantioselective NMDA receptor binding was observed for the trans-configured 2-(2-ethyl-2-phenyl-1,3-dioxolan-4-yl)ethanamine 13b, the (2-ethyl-2-phenyl-1,3-dioxan-4-yl)methanamine 16b, and the (2,2-diphenyl-1,3-dioxan-4-yl)methanamine 16c. The NMDA receptor affinity of these compounds resides almost exclusively in the (S)-configured enantiomers (2S,4S)-13b, (2S,4S)-16b, and (4S)-16c. The lowest Ki-value in this series was found for the (2S,4S)-configured 1,3-dioxolane (2S,4S)-13b (Ki = 69 nM), which is in the range of the Ki-value of the lead compounds etoxadrol and dexoxadrol, indicating that the 2-aminoethyl and the piperidin-2-yl substituents lead to similar NMDA receptor interactions.
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Affiliation(s)
- Marion Aepkers
- Institut für Pharmazeutische und Medizinische Chemie der Westfälischen Wilhelms-Universität Münster, Hittorfstrasssse 58-62, D-48149 Münster, Germany
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13
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Sax M, Berning S, Wünsch B. One pot solid phase synthesis of 2-substituted 2,3-dihydropyridin-4(1H)-ones on Rinkamide-resin. Tetrahedron 2005. [DOI: 10.1016/j.tet.2004.10.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Dei S, Bellucci C, Buccioni M, Ferraroni M, Gualtieri F, Guandalini L, Manetti D, Matucci R, Romanelli MN, Scapecchi S, Teodori E. Synthesis and cholinergic affinity of diastereomeric and enantiomeric isomers of 1-methyl-2-(2-methyl-1,3-dioxolan-4-yl)- pyrrolidine, 1-methyl-2-(2-methyl-1,3-oxathiolan-5-yl)pyrrolidine and of Their iodomethylates. Bioorg Med Chem 2003; 11:3153-64. [PMID: 12818678 DOI: 10.1016/s0968-0896(03)00236-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Four out of the eight possible stereoisomers of 1-methyl-2-(2-methyl-1,3-dioxolan-4-yl)pyrrolidine, 1-methyl-2-(2-methyl-1,3-oxathiolan-5-yl)pyrrolidine and the corresponding iodomethylates have been synthesised. They were formally derived from hybridisation of potent though unselective agonists studied before, such as 1,3-dioxolane 1 and 1,3-oxathiolane 2, with the structure of nicotine. It was expected that, by exalting the molecular complexity of the parent compounds, in particular through stereochemical complication in the proximity of the critical cationic head of the molecule, the chance to find agonists able to discriminate among cholinergic receptors subtypes would increase. The relative and absolute configuration of the compounds obtained has been established by means of NMR spectroscopy and X-ray crystallography. In preliminary studies, their binding affinity has been evaluated on rat brain nicotinic and muscarinic receptors. While none of the compounds showed any nicotinic affinity up to the dose of 10 microM, most of the iodomethylates were endowed with promising affinity for the muscarinic receptors.
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Affiliation(s)
- Silvia Dei
- Dipartimento di Scienze Farmaceutiche, Università di Firenze, Via Gino Capponi 9, 50121 Firenze, Italy
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Carpenter DE, Imbordino RJ, Maloney MT, Moeslein JA, Reeder MR, Scott A. Process Development and Scale-Up of the Potential Thiazolidinedione Antidiabetic Candidate PNU-91325. Org Process Res Dev 2002. [DOI: 10.1021/op025549s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Donald E. Carpenter
- Early Process Research and Development, Pharmacia Corporation, Kalamazoo, Michigan 49001, U.S.A
| | - Rick J. Imbordino
- Early Process Research and Development, Pharmacia Corporation, Kalamazoo, Michigan 49001, U.S.A
| | - Mark T. Maloney
- Early Process Research and Development, Pharmacia Corporation, Kalamazoo, Michigan 49001, U.S.A
| | - Jeffery A. Moeslein
- Early Process Research and Development, Pharmacia Corporation, Kalamazoo, Michigan 49001, U.S.A
| | - Michael R. Reeder
- Early Process Research and Development, Pharmacia Corporation, Kalamazoo, Michigan 49001, U.S.A
| | - Allen Scott
- Early Process Research and Development, Pharmacia Corporation, Kalamazoo, Michigan 49001, U.S.A
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16
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Lin S, Duclos RI, Makriyannis A. Preparation of optically pure 4-(hydroxymethyl)-2-pentadecyl-1,3-dioxolanes and their corresponding phosphodiester ether lipid derivatives. Chem Phys Lipids 2001; 113:111-22. [PMID: 11687231 DOI: 10.1016/s0009-3084(01)00185-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Semi-preparative HPLC on a chiral stationary phase (Chiracel OD) was utilized in the course of this synthesis to separate the four possible diastereomers [cis-(2R,4S)-2a, trans-(2S,4S)-2b, cis-(2S,4R)-2a', and trans-(2R,4R)-2b'] of a 2,4-disubstituted-1,3-dioxolane into optically pure forms (100% de, 100% ee). The syntheses of phosphodiester head group derivatives from each of these four conformationally constrained diastereomeric dioxolanes gave phospholipids which are monocyclic ether lipid analogs. First, the series of four [[(2-pentadecyl-1,3-dioxolan-4-yl)methyl]oxy]phosphocholines 5 were synthesized to give optically pure conformationally constrained analogues of ET-16-OCH(3). A head group variation was also demonstrated by the syntheses of the four diastereomeric [[(2-pentadecyl-1,3-dioxolan-4-yl)-methyl]oxy]phospho-beta-(N-methylmorpholino)ethanols 6.
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Affiliation(s)
- S Lin
- School of Pharmacy, U-92, University of Connecticut, Storrs, CT 06269, USA
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17
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Genzel Y, Archelas A, Broxterman Q, Schulze B, Furstoss R. Microbiological transformations. Part 46: Preparation of enantiopure (S)-2-pyridyloxirane via epoxide hydrolase-catalysed kinetic resolution. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s0957-4166(00)00285-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Acteo MD, Bowman E, Butelman E, Englis JA, Harrish L, Jacobson AE, Mattson MV, Medzihradsky F, Patrick G, Rowlett JK, Smith CB, Winger G, Woods JH, Woolverton WL. Zipeprol: preclinical assessment of abuse potential. Drug Alcohol Depend 1996; 42:93-104. [PMID: 8889408 DOI: 10.1016/0376-8716(96)01267-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Zipeprol was evaluated in a number of in vitro and in vivo assays predictive of stimulant, depressant, or opioid abuse potential. Zipeprol had affinity for mu and kappa opioid binding sites as well as sigma binding sites. However, it failed to exert opioid-like agonist actions in rodents, and did not attenuate withdrawal signs in morphine- or pentobarbital-dependent rats. Zipeprol did not substitute for either amphetamine or pentobarbital in drug discrimination assays in rhesus monkeys. On the other hand, it suppressed morphine withdrawal signs in rhesus monkeys in two assays, and it acted as a quadazocine-sensitive reinforcer in monkeys trained to self-inject alfentanil. Zipeprol also acted as a reinforcer in monkeys trained to self-inject methohexital. In a dose range of 10-18 mg/kg, zipeprol induced convulsions in monkeys. Zipeprol appears to have abuse potential and a novel spectrum of action involving both opioid and non-opioid effects.
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Affiliation(s)
- M D Acteo
- Department of Pharmacology, Medical College of Virginia, Virginia Commonwealth University, Richmond 23298-0163, USA
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Wünsch B, Diekmann H, Höfner G. Stereoselective synthesis of 2-aminoethyl substituted tricycles with NMDA receptor affinity. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/0957-4166(95)00190-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Alcaide B, Biurrun C, Plumet J. The uncatalyzed alcoholysis of furyl-2-oxirane. A mechanistic study based on kinetic data. Tetrahedron 1994. [DOI: 10.1016/s0040-4020(01)80709-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Wünsch B, Diekmann H, Höfner G. Homochirale 2,4-disubstituierte 1,3-Dioxane aus (S)-(−)-Äpfelsäure: Stereoselektive Synthese und Untersuchung der NMDA-Rezeptoraffinität aller vier Stereoisomerer. ACTA ACUST UNITED AC 1993. [DOI: 10.1002/jlac.1993199301208] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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