Kcnq channel modulating compounds and their pharmaceutical use
申请人:Brown Dalby William
公开号:US20060173058A1
公开(公告)日:2006-08-03
This invention relates to novel compounds useful as modulators of the KCNQ channel, to pharmaceutical compositions comprising these compounds, and to methods of treatment herewith.
KCNQ channel modulating compounds and their pharmaceutical use
申请人:Neurosearch A/S
公开号:US07741352B2
公开(公告)日:2010-06-22
This invention relates to novel compounds useful as modulators of the KCNQ channel, to pharmaceutical compositions comprising these compounds, and to methods of treatment herewith.
This invention is directed to compounds and salts that are generally useful as anthelmintic agents or as intermediates in processes for making anthelmintic agents. This invention also is directed to processes for making the compounds and salts, pharmaceutical compositions and kits comprising the compounds and salts, uses of the compounds and salts to make medicaments, and treatments comprising the administration of the compounds and salts to animals in need of the treatments.
Verfahren zur Herstellung von hochmolekularen, gegebenenfalls verzweigten Polyarylensulfiden
申请人:BAYER AG
公开号:EP0275007A2
公开(公告)日:1988-07-20
Die Erfindung betrifft ein Verfahren zur Herstellung von hochmolekularem, gegebenenfalls verzweigten Polyarylensulfiden aus Alkalisulfiden, gegebenenfalls im Gemisch mit Alkalihydrogensulfiden und Dihalogenaromaten in einem polaren Lösungsmittel, in Gegenwart von 0,1 bis 6,0 Mol-%, bevorzugt 0,25 bis 4,0 Mol-% einer aromatischen Monoalkoxy- bzw. Monoalkylthioverbindung. Die so erhaltenen Polyarylensulfide haben reproduzierbar einstellbare Schmelzviskositäten bzw. Molmassen und zeichnen sich durch eine geringere Korrosion aus.
meso-Tetrakis(2-hydroxy-4-nonylphenyl)porphyrin (1), which was prepared as a host molecule for ubiquinone analogues, comprises four atropisomers, alpha alpha alpha alpha, alpha alpha alpha beta, alpha alpha beta beta, and alpha beta alpha beta, in a statistical ratio of 1:4:2:1, respectively. The atropisomerization is due to internal rotation about the C(aryl)-C(porphyrin) bonds and is observed even at room temperature, A rate constant for the rotation was determined (k = 1.73 x 10(-5) s(-1) in CHCl3 at 25 degrees C). UV/visible spectrophotometric titration of tetramethoxy-p-benzoquinone (3) against 1(alpha alpha alpha alpha) or 1(alpha alpha alpha beta) in CHCl3 at 25 degrees C showed 1:1 complexation with association constants of (9.4 +/- 0.1) x 10(3) and (3.5 +/- 0.1) x 10(2) M-1, respectively. Upon addition of 3 to a solution of 1 in CDCl3, the proportion of 1(alpha alpha alpha alpha) in the atropisomeric mixture increased and that of the other three isomers decreased over 500 h. At equilibrium the proportion of 1(alpha alpha alpha alpha) reached 78% in the presence of 3 (3 equiv); this showed that atropisomerization is induced by complexation with 3, An atropisomeric shift to 1(alpha alpha alpha alpha) was also observed upon addition of 2,3-dimethoxy-p-benzoquinone (4); however, the proportion of 1 alpha alpha alpha alpha was only 30% at equilibrium, since the difference in binding affinities between 1(alpha alpha alpha alpha)-4 and 1(alpha alpha alpha beta)-4 complexes is relatively small compared with that between 1(alpha alpha alpha alpha)-3 and 1(alpha alpha alpha beta)-3 complexes. Nickel and zinc porphyrins. 1.Ni and 1.Zn, also showed induced-fit interaction with 3. The atropisomeric shift to 1(alpha alpha alpha alpha).Ni upon addition of 3 was completed within Ih. whereas guest-induced atropisomerization in 1.Zn was much slower than in free base 1. The observed changes in the relative amounts of the four atropisomers are identical with the simulated changes calculated from multiple equilibrium systems by use of kinetic and thermodynamic parameters. This system is a suitable model for induced-fit molecular recognition in flexible enzymes.