摘要:
This invention relates to novel spiro cyclopentane derivatives of formula (I) or a pharmaceutically acceptable salt thereof, for treating diseases and conditions of the central nervous system (CNS), in particular sleep disorders.
摘要:
The invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof, for treating diseases and conditions of the central nervous system (CNS), in particular sleep disorders.
摘要:
A new method of preparing memantine hydrochloride, comprises the following steps: reacting 1-bromo-3, 5-dimethyl adamantane and urea/formic acid with formic acid also acting as the solvent; hydrolysising with aqueous inorganic acid; alkalifying, extracting and acidifying with hydrochloric acid; finally collecting target compound. The method uses cheaper raw materials and conducts in homogeneous phase under mild conditions. It can reach high yield and good product purity, and be suitable for macrochemistry. The purity of crude product is 99.0%, and reaches 99.98% after first recrystallization, yield: 69.5%, bp: 332ºC (DSC).
摘要:
The present invention relates to new salts of the single enantiomers of omeprazole, i.e. salts of (S)-5-methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)-methyl]sulfinyl]-1H-benzimidazole ((S)-omeprazole) and (R)-5-methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)-methyl]sulfinyl]-1H-benzimidazole ((R)-omeprazole) respectively. More specifically, the present invention relates to 1-cyclohexylethyl ammonium salts of the compounds, formed by a reaction of (S)-omeprazole and (R)-omeprazole respectively and 1-cyclohexylethyl amine. The present invention also relates to a process for preparing the compounds of the invention, a pharmaceutical preparation and a method for treatment of gastric related disorders by administering the compounds of the invention.
摘要:
The present invention relates to new salts of omeprazole and esomeprazole respectively, i.e. salts of 5-methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)-methyl]sulfinyl]-1H-benzimidazole and the (S)-enantiomer thereof. More specifically, the present invention relates to adamantan ammonium salt of the compounds, formed by a reaction of omeprazole and esomeprazole respectively and adamantan amine. The present invention also relates to a process for preparing the compounds of the invention, a pharmaceutical preparation and a method for treatment of gastric related disorders by administering the compounds of the invention.
摘要:
An object of the present invention is to provide a modified cyclic aliphatic polyamine having a low viscosity and a small content of unreacted polyamine which can provide, when it is used as a curing agent for epoxy resin, an epoxy resin composition having an improved workability without adding solvent or diluent and an excellent property of epoxy resin cure product. The above modified cyclic aliphatic polyamine is obtained by addition reaction of a cyclic aliphatic polyamine such as isophoronediamine and norbornanediamine and an alkenyl compound such as styrene. The modified cyclic aliphatic polyamine thus obtained is added in epoxy resin to be used as a curing agent for epoxy resin.
摘要:
An object of the present invention is to provide a modified cyclic aliphatic polyamine having a low viscosity and a small content of unreacted polyamine which can provide, when it is used as a curing agent for epoxy resin, an epoxy resin composition having an improved workability without adding solvent or diluent and an excellent property of epoxy resin cure product. The above modified cyclic aliphatic polyamine is obtained by addition reaction of a cyclic aliphatic polyamine such as isophoronediamine and norbornanediamine and an alkenyl compound such as styrene. The modified cyclic aliphatic polyamine thus obtained is added in epoxy resin to be used as a curing agent for epoxy resin.
摘要:
A cyclohexanediurea derivative represented by general formula (I) or a salt thereof, a process for producing the same, an intermediate therefor, medicinal applications thereof, method of treatment therewith, and use thereof, wherein R?1 and R2¿ represent each independently at least C¿3? linear or branched alkyl, cycloalkyl which may have a bridgehead atom, furyl, furyl-substituted lower alkyl, or aralkyl; and A1 and A2 represent each independently optionally substituted phenyl, pyridyl, quinolyl, isoquinolyl or indolyl.