NOVEL PYRIDINONE DERIVATIVES AND THEIR USE AS POSITIVE ALLOSTERIC MODULATORS OF MGLUR2-RECEPTORS
申请人:Janssen Pharmaceuticals, Inc.
公开号:US20130109652A1
公开(公告)日:2013-05-02
The present invention relates to novel compounds, in particular novel pyridinone derivatives according to Formula (I)
wherein all radicals are defined in the application. The compounds according to the invention are positive allosteric modulators of metabotropic receptors—subtype 2 (“mGluR2”) which are useful for the treatment or prevention of neurological and psychiatric disorders associated with glutamate dysfunction and diseases in which the mGluR2 subtype of metabotropic receptors is involved. In particular, such diseases are central nervous system disorders selected from the group of anxiety, schizophrenia, migraine, depression, and epilepsy. The invention is also directed to pharmaceutical compositions and processes to prepare such compounds and compositions, as well as to the use of such compounds for the prevention and treatment of such diseases in which mGluR2 is involved.
Catalyst-free reductive cyclization of bis(2-aminophenyl) disulfide with CO<sub>2</sub> in the presence of BH<sub>3</sub>NH<sub>3</sub> to synthesize 2-unsubstituted benzothiazole derivatives
cyclization of various disulfides using BH3NH3 as a reductant and CO2 as a C1 resource was developed. The desired 2-unsubstituted benzothiazole derivatives were obtained in good to excellent yields. Moreover, mechanism investigation demonstrated that BH3NH3 played an important role in the formation of benzothiazole. As a reducing agent, BH3NH3 reduced CO2 and cleaved the S–S bond of the disulfide efficiently
A liquid crystal composition which prevents production of an alignment defect of a liquid crystal compound and also has excellent storage stability during dissolution in a solvent is provided. The liquid crystal composition is suitable for constituting a retardation film capable of favorable circular polarization conversion. The liquid crystal composition includes a polymerizable liquid crystal compound having 3 or more ring structures in the main chain, and aluminum. A content of the aluminum is 1 ppm or more and 170 ppm or less relative to the polymerizable liquid crystal compound.