1
|
Saifina LF, Abdalla M, Gubaidullina LM, Zueva IV, Eltayb WA, El-Arabey AA, Kharlamova AD, Lenina OA, Semenov VE, Petrov KA. Novel slow-binding reversible acetylcholinesterase inhibitors based on uracil moieties for possible treatment of myasthenia gravis and protection from organophosphate poisoning. Eur J Med Chem 2023; 246:114949. [PMID: 36462442 DOI: 10.1016/j.ejmech.2022.114949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/18/2022] [Accepted: 11/20/2022] [Indexed: 11/27/2022]
Abstract
A series of new compounds in which uracil and 3,6-dimethyluracil moieties are bridged with different spacers were prepared and evaluated in vitro for the acetyl- and butyrylcholinesterase (AChE and BChE) inhibitory activities. These bisuracils are shown to be very effective inhibitors of AChE, inhibiting the enzyme at nano- and lower molar concentrations with extremely high selectivity for AChE vs. BChE. Kinetic analysis showed that the lead compound 2h acts as a slow-binding inhibitor of AChE and possess a long drug-target residence time (τ = 1/koff = 18.6 ± 7.5 min). Moreover, compound 2h ameliorated muscle weakness in myasthenia gravis rat model with a lower effective dose and longer lasting effect than pyridostigmine bromide. Besides, it was shown that compound 2h has an effect of increasing efficiency of antidotal therapy as a pretreatment for poisoning by organophosphates.
Collapse
Affiliation(s)
- Liliya F Saifina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, Kazan, 420088, Russia
| | - Mohnad Abdalla
- Pediatric Research Institute, Children's Hospital Affiliated to Shandong University, Jinan, 250022, China
| | - Liliya M Gubaidullina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, Kazan, 420088, Russia
| | - Irina V Zueva
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, Kazan, 420088, Russia
| | - Wafa Ali Eltayb
- Biotechnology Department, Faculty of Science and Technology, Shendi University, Shendi, 11111, Sudan
| | - Amr Ahmed El-Arabey
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Cairo, 11751, Egypt
| | - Alexandra D Kharlamova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, Kazan, 420088, Russia
| | - Oksana A Lenina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, Kazan, 420088, Russia
| | - Vyacheslav E Semenov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, Kazan, 420088, Russia.
| | - Konstantin A Petrov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, Kazan, 420088, Russia; Kazan Federal University, 18 Kremlyovskaya str, Kazan, 420008, Russia
| |
Collapse
|
2
|
Mu BS, Zhang ZH, Wu WB, Yu JS, Zhou J. Recent Advances in Synthesis of Chiral 1,2-Dihydropyridines. ACTA CHIMICA SINICA 2021. [DOI: 10.6023/a21040131] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
3
|
Hrvat NM, Kovarik Z. Counteracting poisoning with chemical warfare nerve agents. Arh Hig Rada Toksikol 2020; 71:266-284. [PMID: 33410774 PMCID: PMC7968514 DOI: 10.2478/aiht-2020-71-3459] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/01/2020] [Accepted: 11/01/2020] [Indexed: 12/14/2022] Open
Abstract
Phosphylation of the pivotal enzyme acetylcholinesterase (AChE) by nerve agents (NAs) leads to irreversible inhibition of the enzyme and accumulation of neurotransmitter acetylcholine, which induces cholinergic crisis, that is, overstimulation of muscarinic and nicotinic membrane receptors in the central and peripheral nervous system. In severe cases, subsequent desensitisation of the receptors results in hypoxia, vasodepression, and respiratory arrest, followed by death. Prompt action is therefore critical to improve the chances of victim's survival and recovery. Standard therapy of NA poisoning generally involves administration of anticholinergic atropine and an oxime reactivator of phosphylated AChE. Anticholinesterase compounds or NA bioscavengers can also be applied to preserve native AChE from inhibition. With this review of 70 years of research we aim to present current and potential approaches to counteracting NA poisoning.
Collapse
Affiliation(s)
| | - Zrinka Kovarik
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| |
Collapse
|
4
|
Kumar V, Saha A, Roy K. In silico modeling for dual inhibition of acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) enzymes in Alzheimer's disease. Comput Biol Chem 2020; 88:107355. [PMID: 32801088 DOI: 10.1016/j.compbiolchem.2020.107355] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 01/11/2023]
Abstract
In this research, we have implemented two-dimensional quantitative structure-activity relationship (2D-QSAR) modeling using two different datasets, namely, acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) enzyme inhibitors. A third dataset has been derived based on their selectivity and used for the development of partial least squares (PLS) based regression models. The developed models were extensively validated using various internal and external validation parameters. The features appearing in the model against AChE enzyme suggest that a small ring size, higher number of -CH2- groups, higher number of secondary aromatic amines and higher number of aromatic ketone groups may contribute to the inhibitory activity. The features obtained from the model against BuChE enzyme suggest that the sum of topological distances between two nitrogen atoms, higher number of fragments X-C(=X)-X, higher number of secondary aromatic amides, fragment R--CR-X may be more favorable for inhibition. The features obtained from selectivity based model suggest that the number of aromatic ethers, unsaturation content relative to the molecular size and molecular shape may be more specific for the inhibition of the AChE enzyme in comparison to the BuChE enzyme. Moreover, we have implemented the molecular docking studies using the most and least active molecules from the datasets in order to identify the binding pattern between ligand and target enzyme. The obtained information is then correlated with the essential structural features associated with the 2D-QSAR models.
Collapse
Affiliation(s)
- Vinay Kumar
- Drug Theoretics and Cheminformatics Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
| | - Achintya Saha
- Department of Chemical Technology, University of Calcutta, 92 A P C Road, Kolkata 700 009, India
| | - Kunal Roy
- Drug Theoretics and Cheminformatics Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India.
| |
Collapse
|
5
|
Specific inhibition of acetylcholinesterase as an approach to decrease muscarinic side effects during myasthenia gravis treatment. Sci Rep 2018; 8:304. [PMID: 29321572 PMCID: PMC5762639 DOI: 10.1038/s41598-017-18307-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 11/14/2017] [Indexed: 12/21/2022] Open
Abstract
Non-selective inhibitors of cholinesterases (ChEs) are clinically used for treatment of myasthenia gravis (MG). While being generally safe, they cause numerous adverse effects including induction of hyperactivity of urinary bladder and intestines affecting quality of patients life. In this study we have compared two ChEs inhibitors, a newly synthesized compound C547 and clinically used pyridostigmine bromide, by their efficiency to reduce muscle weakness symptoms and ability to activate contractions of urinary bladder in a rat model of autoimmune MG. We found that at dose effectively reducing MG symptoms, C547 did not affect activity of rat urinary bladder. In contrast, at equipotent dose, pyridostigmine caused a significant increase in tonus and force of spontaneous contractions of bladder wall. We also found that this profile of ChEs inhibitors translates into the preparation of human urinary bladder. The difference in action observed for C547 and pyridostigmine we attribute to a high level of pharmacological selectivity of C547 in inhibiting acetylcholinesterase as compared to butyrylcholinesterase. These results raise reasonable hope that selective acetylcholinesterase inhibitors should show efficacy in treating MG in human patients with a significant reduction in adverse effects related to hyperactivation of smooth muscles.
Collapse
|
6
|
Masson P. Novel approaches in prophylaxis/pretreatment and treatment of organophosphorus poisoning. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2016.1211652] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Patrick Masson
- Neuropharmacology Laboratory, Kazan Federal University, Kazan, Russian Federation
| |
Collapse
|
7
|
Strelnik AD, Petukhov AS, Zueva IV, Zobov VV, Petrov KA, Nikolsky EE, Balakin KV, Bachurin SO, Shtyrlin YG. Novel potent pyridoxine-based inhibitors of AChE and BChE, structural analogs of pyridostigmine, with improved in vivo safety profile. Bioorg Med Chem Lett 2016; 26:4092-4. [PMID: 27377327 DOI: 10.1016/j.bmcl.2016.06.070] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 06/23/2016] [Accepted: 06/24/2016] [Indexed: 12/20/2022]
Abstract
We report a novel class of carbamate-type ChE inhibitors, structural analogs of pyridostigmine. A small library of congeneric pyridoxine-based compounds was designed, synthesized and evaluated for AChE and BChE enzymes inhibition in vitro. The most active compounds have potent enzyme inhibiting activity with IC50 values in the range of 0.46-2.1μM (for AChE) and 0.59-8.1μM (for BChE), with moderate selectivity for AChE comparable with that of pyridostigmine and neostigmine. Acute toxicity studies using mice models demonstrated excellent safety profile of the obtained compounds with LD50 in the range of 22-326mg/kg, while pyridostigmine and neostigmine are much more toxic (LD50 3.3 and 0.51mg/kg, respectively). The obtained results pave the way to design of novel potent and safe cholinesterase inhibitors for symptomatic treatment of neuromuscular disorders.
Collapse
Affiliation(s)
- Alexey D Strelnik
- Kazan (Volga region) Federal University, Kremlyovskaya 18, 420008 Kazan, Russia
| | - Alexey S Petukhov
- Kazan (Volga region) Federal University, Kremlyovskaya 18, 420008 Kazan, Russia
| | - Irina V Zueva
- Kazan (Volga region) Federal University, Kremlyovskaya 18, 420008 Kazan, Russia; A.E. Arbuzov Institute of Organic and Physical Chemistry; KazSC, Russian Academy of Sciences, Arbuzova 8, 420088 Kazan, Russia
| | - Vladimir V Zobov
- Kazan (Volga region) Federal University, Kremlyovskaya 18, 420008 Kazan, Russia; A.E. Arbuzov Institute of Organic and Physical Chemistry; KazSC, Russian Academy of Sciences, Arbuzova 8, 420088 Kazan, Russia
| | - Konstantin A Petrov
- Kazan (Volga region) Federal University, Kremlyovskaya 18, 420008 Kazan, Russia; A.E. Arbuzov Institute of Organic and Physical Chemistry; KazSC, Russian Academy of Sciences, Arbuzova 8, 420088 Kazan, Russia
| | - Evgeny E Nikolsky
- Kazan (Volga region) Federal University, Kremlyovskaya 18, 420008 Kazan, Russia; Kazan Institute of Biochemistry and Biophysics, Lobachevsky St. 2/31, Kazan 420111, Russia
| | - Konstantin V Balakin
- Kazan (Volga region) Federal University, Kremlyovskaya 18, 420008 Kazan, Russia; Institute of Physiologically Active Compounds of Russian Academy of Sciences, Severnyi pr. 1, Chernogolovka, Moscow Reg. 142432, Russia
| | - Sergey O Bachurin
- Institute of Physiologically Active Compounds of Russian Academy of Sciences, Severnyi pr. 1, Chernogolovka, Moscow Reg. 142432, Russia
| | - Yurii G Shtyrlin
- Kazan (Volga region) Federal University, Kremlyovskaya 18, 420008 Kazan, Russia.
| |
Collapse
|
8
|
Slow-binding inhibition of acetylcholinesterase by an alkylammonium derivative of 6-methyluracil: mechanism and possible advantages for myasthenia gravis treatment. Biochem J 2016; 473:1225-36. [PMID: 26929400 DOI: 10.1042/bcj20160084] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 02/26/2016] [Indexed: 11/17/2022]
Abstract
Inhibition of human AChE (acetylcholinesterase) and BChE (butyrylcholinesterase) by an alkylammonium derivative of 6-methyluracil, C-547, a potential drug for the treatment of MG (myasthenia gravis) was studied. Kinetic analysis of AChE inhibition showed that C-547 is a slow-binding inhibitor of type B, i.e. after formation of the initial enzyme·inhibitor complex (Ki=140 pM), an induced-fit step allows establishment of the final complex (Ki*=22 pM). The estimated koff is low, 0.05 min(-1) On the other hand, reversible inhibition of human BChE is a fast-binding process of mixed-type (Ki=1.77 μM; Ki'=3.17 μM). The crystal structure of mouse AChE complexed with C-547 was solved at 3.13 Å resolution. The complex is stabilized by cation-π, stacking and hydrogen-bonding interactions. Molecular dynamics simulations of the binding/dissociation processes of C-547 and C-35 (a non-charged analogue) to mouse and human AChEs were performed. Molecular modelling on mouse and human AChE showed that the slow step results from an enzyme conformational change that allows C-547 to cross the bottleneck in the active-site gorge, followed by formation of tight complex, as observed in the crystal structure. In contrast, the related non-charged compound C-35 is not a slow-binding inhibitor. It does not cross the bottleneck because it is not sensitive to the electrostatic driving force to reach the bottom of the gorge. Thus C-547 is one of the most potent and selective reversible inhibitors of AChE with a long residence time, τ=20 min, longer than for other reversible inhibitors used in the treatment of MG. This makes C-547 a promising drug for the treatment of this disease.
Collapse
|
9
|
Elistratova JG, Mustafina AR, Brylev KA, Petrov KA, Shestopalov MA, Mironov YV, Babaev VM, Rizvanov IK, Masson P, Sinyashin OG. Sensing activity of cholinesterases through a luminescence response of the hexarhenium cluster complex [{Re6S8}(OH)6]4−. Analyst 2016; 141:4204-10. [DOI: 10.1039/c6an00581k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A new method to sense enzymatic hydrolysis of acetylcholine through a cluster luminescence.
Collapse
Affiliation(s)
- Julia G. Elistratova
- A. E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
| | - Asiya R. Mustafina
- A. E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
| | - Konstantin A. Brylev
- Nikolaev Institute of Inorganic Chemistry SB RAS
- 630090 Novosibirsk
- Russian Federation
| | - Konstantin A. Petrov
- A. E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
| | | | - Yuri V. Mironov
- Nikolaev Institute of Inorganic Chemistry SB RAS
- 630090 Novosibirsk
- Russian Federation
| | - Vasily M. Babaev
- A. E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
| | - Ildar K. Rizvanov
- A. E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
| | | | - Oleg G. Sinyashin
- A. E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
| |
Collapse
|
10
|
Arima N, Uchida Y, Yu R, Nakayama K, Nishina H. Acetylcholine receptors regulate gene expression that is essential for primitive streak formation in murine embryoid bodies. Biochem Biophys Res Commun 2013; 435:447-53. [PMID: 23665324 DOI: 10.1016/j.bbrc.2013.05.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 05/02/2013] [Indexed: 10/26/2022]
Abstract
Muscarinic acetylcholine receptors (mAchRs) are critical components of the cholinergic system, which is the key regulator of both the central and peripheral nervous systems in mammals. Interestingly, several components of the cholinergic system, including mAchRs and choline acetyltransferase (ChAT), have recently been found to be expressed in mouse embryonic stem (ES) cells and human placenta. These results raise the intriguing possibility that mAchRs play physiological roles in the regulation of early embryogenesis. Early embryogenesis can be mimicked in vitro using an ES cell-based culture system in which the cells form a primitive streak-like structure and efficiently develop into mesodermal progenitors. Here we report that chemical inhibitors specifically targeting mAchRs suppressed the expression of genes essential for primitive streak formation, including Wnt3, and thereby blocked mesodermal progenitor differentiation. Interestingly, mAchR inhibitors also reduced the expression of Cyp26a1, an enzyme involved in the catabolism of retinoic acid (RA). RA is an important regulator of Wnt3 signaling. Our study presents evidence indicating that mAchRs influence RA signaling necessary for the induction of the primitive streak. To our knowledge, this is the first report showing that mAchRs have important functions not only in adult mammals but also during early mammalian embryogenesis.
Collapse
Affiliation(s)
- Norie Arima
- Department of Developmental and Regenerative Biology, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Tokyo 113-8510, Japan
| | | | | | | | | |
Collapse
|
11
|
Kaboudin B, Emadi S, Faghihi MR, Fallahi M, Sheikh-Hasani V. Synthesis of α-oxycarbanilinophosphonates and their anticholinesterase activities: the most potent derivative is bound to the peripheral site of acetylcholinesterase. J Enzyme Inhib Med Chem 2012; 28:576-82. [DOI: 10.3109/14756366.2012.663362] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - Saeed Emadi
- Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences (IASBS),
Gava Zang, Zanjan, Iran
| | | | | | - Vahid Sheikh-Hasani
- Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences (IASBS),
Gava Zang, Zanjan, Iran
| |
Collapse
|
12
|
Multifunctional drugs as novel antidotes for organophosphates’ poisoning. Toxicology 2011; 290:149-55. [DOI: 10.1016/j.tox.2011.09.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Revised: 09/17/2011] [Accepted: 09/19/2011] [Indexed: 11/21/2022]
|
13
|
Masson P. Evolution of and perspectives on therapeutic approaches to nerve agent poisoning. Toxicol Lett 2011; 206:5-13. [PMID: 21524695 DOI: 10.1016/j.toxlet.2011.04.006] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Accepted: 04/08/2011] [Indexed: 01/18/2023]
Abstract
After more than 70 years of considerable efforts, research on medical defense against nerve agents has come to a standstill. Major progress in medical countermeasures was achieved between the 50s and 70s with the development of anticholinergic drugs and carbamate-based pretreatment, the introduction of pyridinium oximes as antidotes, and benzodiazepines in emergency treatments. These drugs ensure good protection of the peripheral nervous system and mitigate the acute effects of exposure to lethal doses of nerve agents. However, pyridostigmine and cholinesterase reactivators currently used in the armed forces do not protect/reactivate central acetylcholinesterases. Moreover, other drugs used are not sufficiently effective in protecting the central nervous system against seizures, irreversible brain damages and long-term sequelae of nerve agent poisoning.New developments of medical counter-measures focus on: (a) detoxification of organophosphorus molecules before they react with acetylcholinesterase and other physiological targets by administration of stoichiometric or catalytic scavengers; (b) protection and reactivation of central acetylcholinesterases, and (c) improvement of neuroprotection following delayed therapy.Future developments will aim at treatment of acute and long-term effects of low level exposure to nerve agents, research on alternative routes for optimizing drug delivery, and therapies. Though gene therapy for in situ generation of bioscavengers, and cell therapy based on neural progenitor engraftment for neuronal regeneration have been successfully explored, more studies are needed before practical medical applications can be made of these new approaches.
Collapse
Affiliation(s)
- Patrick Masson
- IRBA-CRSSA, Toxicology Dept., 38702 La Tronche Cedex, France.
| |
Collapse
|
14
|
3D-QSAR studies of 2,2-diphenylpropionates to aid discovery of novel potent muscarinic antagonists. Bioorg Med Chem 2009; 17:3999-4012. [DOI: 10.1016/j.bmc.2009.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2008] [Revised: 03/27/2009] [Accepted: 04/02/2009] [Indexed: 11/27/2022]
|
15
|
Facile synthesis of new carbon-11 labeled conformationally restricted rivastigmine analogues as potential PET agents for imaging AChE and BChE enzymes. Appl Radiat Isot 2008; 66:506-12. [DOI: 10.1016/j.apradiso.2007.11.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2007] [Revised: 10/11/2007] [Accepted: 11/13/2007] [Indexed: 11/22/2022]
|
16
|
Utilizing high throughput screening data for predictive toxicology models: protocols and application to MLSCN assays. J Comput Aided Mol Des 2008; 22:367-84. [DOI: 10.1007/s10822-008-9192-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2007] [Accepted: 01/30/2008] [Indexed: 01/27/2023]
|
17
|
Li A, Wang X, Yue CQ, Ye J, Li CL, Li RT. Unique spirocyclopiperazinium salt. Part 4: Modification of dispirocyclopiperazinium (DSPZ) salts as analgesics. Bioorg Med Chem Lett 2007; 17:5078-81. [PMID: 17656090 DOI: 10.1016/j.bmcl.2007.07.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2007] [Revised: 07/05/2007] [Accepted: 07/06/2007] [Indexed: 10/23/2022]
Abstract
In order to improve the analgesic activity of lead compound 7a, two series of dispirocyclopiperazinium (DSPZ) salts 9a-h, 10a-e and compounds 14, 15 were synthesized and evaluated for their in vivo analgesic activity both by acetic acid induced writhing test and hot plate test. Compounds 9h, 14, and 15 exhibited better analgesic activities than 7a. Several important structure-activity relationships were revealed from this study: (1) the introduction of aryl group would obviously improve the activity; (2) it was favorable to enhance the analgesic activity and reduce the toxicity to incorporate alkyl group with suitable length in the molecule; (3) carbamate analogues displayed lower toxicity than carboxylic ester analogues; (4) hydroxylation and chlorination of lead compound could increase the analgesic activity in hot plate test.
Collapse
Affiliation(s)
- Ang Li
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100083, PR China
| | | | | | | | | | | |
Collapse
|
18
|
Correa-Basurto J, Flores-Sandoval C, Marín-Cruz J, Rojo-Domínguez A, Espinoza-Fonseca LM, Trujillo-Ferrara JG. Docking and quantum mechanic studies on cholinesterases and their inhibitors. Eur J Med Chem 2007; 42:10-9. [DOI: 10.1016/j.ejmech.2006.08.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2006] [Revised: 07/21/2006] [Accepted: 08/11/2006] [Indexed: 11/25/2022]
|
19
|
Wang JQ, Miller MA, Mock BH, Lopshire JC, Groh WJ, Zipes DP, Hutchins GD, Zheng QH. Facile synthesis and PET imaging of a novel potential heart acetylcholinesterase tracer N-[11C]methyl-3-[[(dimethylamino)carbonyl]oxy]-2-(2′,2′-diphenylpropionoxymethyl)pyridinium. Bioorg Med Chem Lett 2005; 15:4510-4. [PMID: 16112863 DOI: 10.1016/j.bmcl.2005.07.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2005] [Revised: 07/05/2005] [Accepted: 07/06/2005] [Indexed: 11/18/2022]
Abstract
A new AChE tracer N-[(11)C]methyl-3-[[(dimethylamino)carbonyl]oxy]-2-(2',2'-diphenylpropionoxymethyl)pyridinium ([(11)C]MDDP, [(11)C]1) has been synthesized in 40-65% radiochemical yield. Initial PET dynamic studies of [(11)C]MDDP in rat heart showed rapid heart uptake and blood pool clearance to give high-quality heart images. Blocking studies of [(11)C]MDDP with pretreatment drug neostigmine in rats found only minor reductions in rat heart [(11)C]MDDP retention. The results suggest that [(11)C]MDDP delineates the heart very clearly, and the uptakes of [(11)C]MDDP in rat heart might be related to non-specific binding.
Collapse
Affiliation(s)
- Ji-Quan Wang
- Department of Radiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Kim MG, Bodor ET, Harden TK, Kohn H. C(8)-substituted 1-azabicyclo[3.3.1]non-3-enes: a novel scaffold for muscarinic receptor ligands. Bioorg Med Chem 2004; 12:2357-67. [PMID: 15080933 DOI: 10.1016/j.bmc.2004.02.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2003] [Accepted: 02/04/2004] [Indexed: 11/29/2022]
Abstract
The [3.3.1]-bicyclic amine, exo-8-benzyloxymethyl-3-ethoxycarbonyl-4-hydroxy-1-azabicyclo[3.3.1]non-3-ene (1), has been shown to be a potent competitive antagonist against the hM(1)-hM(5) muscarinic receptors. This heterocyclic system has not been extensively evaluated despite the notable activities reported for other bicyclic amines. Synthetic strategies permitted the selective alteration of five structural sites in 1. Pharmacological evaluation demonstrated that modification of either the C(3) alkoxycarbonyl or the C(4) enol units in 1 gave compounds with high affinity for the hM(1)-hM(5) muscarinic receptors with selectivity for the hM(2) receptor.
Collapse
Affiliation(s)
- Myoung Goo Kim
- Division of Medicinal Chemistry and Natural Products, School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7360, USA
| | | | | | | |
Collapse
|