Synthesis and anticonvulsant activities of .alpha.-heterocyclic .alpha.-acetamido-N-benzylacetamide derivatives
摘要:
Earlier studies showed that (R,S)-alpha-acetamido-N-benzylacetamides (2) containing a five- and six-membered aromatic or heteroaromatic group appended at the C(alpha) site displayed outstanding activity in the maximal electroshock-induced seizure (MES) test in mice. An expanded set of C(alpha)-heteroaromatic analogues of 2 have been prepared and evaluated. The observed findings extended the structure-activity relationships previously discerned for this novel class of anti-convulsants and have validated previous trends. The alpha-furan-2-yl (4), alpha-oxazol-2-yl (18), and alpha-thiazol-2-yl (19) alpha-acetamido-N-benzylacetamides afforded excellent protection against MES-induced seizures in mice. The ED50 and PI values for these adducts rivaled those reported for phenytoin. The outstanding properties provided by 4 led to an in-depth examination of the effect of structural modification at key sites within this compound on biological activity. The pharmacological data in this series indicated that stringent steric and electronic requirements existed for maximal activity and revealed the outstanding activity of (R)-(-)-alpha-acetamido-N-(4-fluorobenzyl)-alpha-(furan-2-yl)acetamide [(R)-30].
The present invention is directed to a compound in the R configuration about the asymmetric carbon in the following formula: ##STR1## pharmaceutical compositions containing same and the use thereof in treating CNS disorders in animals.
[EN] ANTICONVULSANT ENANTIOMERIC AMINO ACID DERIVATIVES<br/>[FR] DERIVES AMINOACIDES ENANTIOMERIQUES AYANT UN EFFET ANTI-CONVULSIF
申请人:RESEARCH CORPORATION TECHNOLOGIES, INC.
公开号:WO1997033861A1
公开(公告)日:1997-09-18
(EN) The present invention is directed to a compound in the R configuration about the asymmetric carbon in formula (I), wherein Ar is phenyl which is unsubstituted or substituted with at least one halo group; Q is lower alkoxy, and Q1 is methyl; pharmaceutical compositions containing same and the use thereof in treating CNS disorders in animals.(FR) L'invention concerne un composé ayant la configuration R autour du carbone asymétrique, de formule (I) dans laquelle Ar représente phényle qui est non-substitué ou substitué par au moins un groupe halo; Q représente alkoxy inférieur et Q1 représente méthyle. L'invention concerne également des compositions pharmaceutiques contenant ce composé et l'utilisation des compositions pharmaceutiques pour traiter des troubles du système nerveux central chez les animaux.
Anticonvulsant composition containing amino acid derivative and use of said amino acid derivative
申请人:RESEARCH CORPORATION TECHNOLOGIES, INC.
公开号:EP0263506A2
公开(公告)日:1988-04-13
The present invention relates to an anticonvulsant composition comprising a compound of the formula:
where R, R₁, R₂ and R₃ and n are as defined in claim 1 as effective ingredient, together with a pharmaceutically acceptable carrier, said composition being useful in the treatment of epilepsy and other CNS disorders, and the use of the above effective ingredient in the preparation of an anticonvulsant medicament.
本发明涉及一种抗惊厥组合物,该组合物包含一种式化合物:
其中 R、R₁、R₂ 和 R₃ 及 n 如权利要求 1 中所定义,作为有效成分,与药学上可接受的载体一起使用,所述组合物可用于治疗癫痫和其他中枢神经系统疾病,以及将上述有效成分用于制备抗惊厥药物。
Chloramphenicol biosynthetic pathway and gene cluster
申请人:Diversa Corporation
公开号:US20020072062A1
公开(公告)日:2002-06-13
The present invention provides a chloramphenicol gene cluster and methods of use thereof. Such gene clusters are useful for production of chloramphenicol.