Evaluation of anticonvulsant and analgesic effects of benzyl- and benzhydryl ureides
摘要:
The anticonvulsant effects of benzyl- and benzhydryl ureides in mice models of seizures (maximal electroshock seizure test, pentylenetetrazol test, picrotoxin-induced seizure test) and the influence on spontaneous locomotor activity has been assessed. Furthermore, the analgesic effect of ureide derivatives was studied in the hot-plate test in mice. Selected compounds were investigated for their in vitro interaction with adenosine receptors as well as the benzodiazepine binding site of GABA(A) receptors. This study demonstrated the strong anticonvulsant activity of several ureides in electrically or chemically induced seizure models, and structure-activity relationships were discussed. 1-Benzyl-3-butyrylurea (9) was found to be equipotent to ethosuximide in the pentylenetetrazol test with regard to the number of attacks as well as the time of the onset of seizures. The ureide 9 also revealed the highest protective activity against seizures in the other models, maximal electroshock seizure and picrotoxin test. Moreover, 1-benzyl-3-butyrylurea was not neurotoxic at doses up to 200 mg/kg. Benzylureides 8-10 showed affinity to the adenosine A, receptors at low micromolar concentrations. However, the apparent anticonvulsant activity in different seizure models does not appear to result from direct activation of adenosine A, receptors or GABAA receptors, respectively. In the hot-plate test, the majority of investigated compounds exhibited analgesic activity. Again, compound 9 was superior to the other substances investigated, suggesting a potential therapeutic value of that ureide derivative. (c) 2006 Elsevier B.V. All rights reserved.
[EN] PYRIDINE SULFONAMIDES<br/>[FR] SULFONAMIDES DE PYRIDINE
申请人:AMGEN INC
公开号:WO2018017896A1
公开(公告)日:2018-01-25
The present invention provides compounds of Formula (I), as defined in the specification, or pharmaceutically acceptable salts thereof, that are inhibitors of voltage-gated sodium channels, in particular Nav 1.7. The compounds are useful for the treatment of diseases treatable by inhibition of sodium channels such as pain disorders, cough, or itch. Also provided are pharmaceutical compositions containing compounds of the present invention.
Substituted pyrazolo[1,5-a] pyrimidines and process for making same
申请人:Wang Daniel Yanong
公开号:US20060063785A1
公开(公告)日:2006-03-23
This invention relates to novel pyrazolo[1,5-a]pyrimidine compounds and the therapeutically acceptable salts thereof. These compounds are useful as anti-proliferative agents in mammals, including humans.
[EN] SUBSTITUTED THIOPHENES AND USES THEREOF<br/>[FR] THIOPHENES SUBSTITUES ET LEURS UTILISATIONS
申请人:ASTRAZENECA AB
公开号:WO2005016909A1
公开(公告)日:2005-02-24
This invention relates to novel compounds having the structural formula (I) and to their pharmaceutical salts, compositions and methods of use. These novel compounds provide a treatment or prophylaxis of cancer.
[EN] PROCESS TO PREPARE MALAYAMYCIN DERIVATIVES<br/>[FR] PROCEDE DE PREPARATION DE DERIVES DE MALAYAMYCINE
申请人:SYNGENTA LTD
公开号:WO2004069842A1
公开(公告)日:2004-08-19
A process is provided for the preparation of a compound of the general formula (I): wherein R is H or C1-4 alkyl, which comprises treating a compound of the general formula (II): where R' is R or R8CO, R is as defined above, R8 is C1-8 alkyl or optionally substituted phenyl and R9 is optionally substituted C1-8 alkyl or optionally substituted aryl, with an amine R''NH2 wherein R'' is H or C1-4 alkyl. Also provided are the trans isomers of the compound (I) where R is CH3 (6-epi-malayamycin A) and H (6-epi-desmethylmalayamycin A), the cis and trans isomers of the compound (I) where R is C2-4 alkyl and various intermediate compounds.
This invention relates to novel compounds having the structural formula (I) and to their pharmaceutical compositions and to their methods of use. These novel compounds provide a treatment or prophylaxis of cancer.