Quaternary salts of 2-[(hydroxyimino)methyl]imidazole. 2. Preparation and in vitro and in vivo evaluaton of 1-(alkoxymethyl)-2-[(hydroxyimino)methyl]-3-methylimidazolium halides for reactivation of organophosphorus-inhibited acetylcholinesterases
摘要:
A series of structurally related mono- and bis-1,3-disubstituted 2-[(hydroxyimino)methyl]imidazolium halides were evaluated in vitro for their ability to reactivate electric eel, bovine, and human erythrocyte (RBC) acetylcholinesterases (AChE) inhibited by ethyl p-nitrophenyl methylphosphonate (EPMP) and 3,3-dimethyl-2-butyl methyl-phosphonofluoridate (soman, GD). All new compounds were characterized for (hydroxyimino)methyl acid dissociation constant, nucleophilicity, octanol-buffer partition coefficient, reversible AChE inhibition, and kinetics of reactivation of EPMP-inhibited AChEs. For GD-inhibited AChEs, maximal reactivation was used to compare compounds since rapid phosphonyl enzyme dealkylation "aging" complicated interpretation of kinetic constants. For comparison, we also evaluated three known pyridinium therapeutics, 2-PAM, HI-6, and toxogonin. In vivo evaluation in mice revealed that when selected imidazolium compounds were coadministered with atropine sulfate, they were effective in providing lifesaving protection against both GD and EPMP challenges. This was a major accomplishment in the search for effective anticholinesterase therapeutics--the synthesis and preliminary evaluation of the first new monoquaternary soman antidotes with potencies superior to 2-PAM. Significantly, there was an apparent inverse relationship between in vitro and in vivo results; the most potent in vivo compounds proved to be the poorest in vitro reactivators. These results suggested that an alternative and possibly novel antidotal mechanism of protective action may be applicable for the imidazolium aldoximes. Selected compounds were also evaluated for their inhibition of AChE phosphorylation by GD and antimuscarinic and antinicotinic receptor blocking effects.
[EN] SUBSTITUTED METHYLFORMYL REAGENTS AND METHOD OF USING SAME TO MODIFY PHYSICOCHEMICAL AND/OR PHARMACOKINETIC PROPERTIES OF COMPOUNDS<br/>[FR] RÉACTIFS DE MÉTHYLFORMYLE SUBSTITUÉ ET PROCÉDÉ D'UTILISATION DE CEUX-CI POUR MODIFIER DES PROPRIÉTÉS PHYSICOCHIMIQUES ET/OU PHARMACOCINÉTIQUES DE COMPOSÉS
申请人:SPHAERA PHARMA PRIVATE LTD
公开号:WO2012137225A1
公开(公告)日:2012-10-11
The present invention relates to the synthesis and application of novel chiral/ achiral substituted methyl formyl reagents to modify pharmaceutical agents and/or biologically active substances to modify the physicochemical, biological and/or pharmacokinetic properties of the resulting compounds from the unmodified original agent.
Novel compounds and their synthesis are described. Methods for using these compounds in the prevention or treatment of cancer, a bacterial infection or a viral infection in a subject are also described.
[EN] COMPOSITIONS AND METHODS FOR INHIBITING KINASES<br/>[FR] COMPOSITIONS ET MÉTHODES POUR INHIBER LES KINASES
申请人:INHIBIKASE THERAPEUTICS INC
公开号:WO2018081251A1
公开(公告)日:2018-05-03
The present invention provides methods for the prevention or treatment of Parkinson's Disease using Abelson-family tyrosine kinase inhibitors.
本发明提供了使用阿贝尔森家族酪氨酸激酶抑制剂预防或治疗帕金森病的方法。
Soft drugs. 3. A new class of anticholinergic agents
作者:Nicholas Bodor、Ross Woods、Colin Raper、Pauline Kearney、James J. Kaminski
DOI:10.1021/jm00179a002
日期:1980.5
hindered "umbrella" acids and cholinergics when derivatives of simple aliphatic acids. The more potent anticholinergics have up to 10 times higher acetylcholine antagonist activity than atropine, but they have a much shorter duration of action. The compounds cleave hydrolytically with simultaneous destruction of the quaternary head. The compounds are promising as selective, local agents, particularly as
[EN] PYRIDAZIN-3(2H)-ONE DERIVATIVES AND THEIR USE AS PDE4 INHIBITORS<br/>[FR] NOUVEAUX DERIVES DE PYRIDAZIN-3(2H)-ONE ET LEURS UTILISATION EN TANT QU'INHIBITEURS DE PDE4
申请人:ALMIRALL PRODESFARMA SA
公开号:WO2005123693A1
公开(公告)日:2005-12-29
The invention relates to new therapeutically useful pyridazin-3(2H)-one derivatives, to processes for their preparation and to pharmaceutical compositions containing them. These compounds are potent and selective inhibitors of phosphodiesterase 4 (PDE4) and are thus useful in the treatment, prevention and suppression of related pathological conditions, diseases and disorders, in particular asthma, chronic obstructive pulmonary disease, rheumatoid arthritis, topic dermatitis, psoriasis or irritable bowel disease.