Positive allosteric modulators of the nicotinic acetylcholine receptor
申请人:——
公开号:US20030236287A1
公开(公告)日:2003-12-25
The invention provides compounds of Formula I:
1
These compounds may be in the form of pharmaceutical salts or compositions, may be in pure enantiomeric form or racemic mixtures, and are useful in pharmaceuticals used to treat diseases or conditions in which &agr;7 nAChR is known to be involved.
The present invention relates to compounds of formula (I) or pharmaceutical acceptable salts,
wherein X, Y, Z, R
3
and R
4
are defined in the description. The present invention relates also to compositions containing said compounds which are useful for inhibiting kinases such as wee-1 and methods of treating diseases such as cancer.
Ureido or carbamate derivatives of crown ethers and of silicon usable for preparing supports intended for the separation by chromatography of metal cations and of organic molecules comprising amine functional groups
申请人:Barre Yves
公开号:US20050143587A1
公开(公告)日:2005-06-30
The invention relates to ureido or carbamate derivatives of crown ethers and of silicon of formula:
These derivatives can be grafted to silica gel for the purpose of obtaining supports for the chromatographic separation of cations or of molecules comprising amine functional groups, such as amino acids.
A process for producing an isocyanate trimer and a process for producing an urethane with a catalyst for isocyanate trimerization or urethane formation, which comprises cesium fluoride or a tetraalkylammonium fluoride.
The present invention relates in a first consideration to aldimines of formula (I). Said aldimines are particularly suitable as latent hardeners in curable compositions, particularly compositions comprising one or two-component isocyanate groups. Due to the presence of the reactive group, they can be converted to compounds of the formulas (X) and (XII) comprising aldimine groups, implementing a further consideration of the present invention. The aldimines, or the compounds comprising aldimine groups, can be used primarily in adhesive and sealant materials, but also in coatings, and can be produced easily from readily available source materials, and have good thermal stability. The tertiary amino group thereof has a surprisingly low alkalinity and can in some cases have a catalytic effect in chemical reaction systems.