Substituted azetidinone compounds

Details Substituted azetidinone compounds Substituted azetidinone compounds

C - Chemistry, Metallurgy

07

K

530/5.06, 260/33

C07K 5/06 (2006.01) C07D 205/08 (2006.01) C07D 205/085 (2006.01) C07F 7/10 (2006.01) C07K 5/097 (2006.01)

Patent

CA 1270097

ABSTRACT OF THE DISCLOSURE Substituted Azetidinone Compounds The present invention relates to substituted azetidinone compounds, their preparation, and medicaments containing them. More particularly, the present invention relates to compounds shown by general formula (I): Image (I) wherein one of R1 and R2 represents a substituted lower alkyl group, an azido group, an amino group, a lower acylamino group, a mercapto group or a lower alkylthio group and the other represents a hydrogen group, or, both represent hydrogen atoms or lower alkyl groups; R3 represents a hydrogen atom or a group shown by formula: Image (wherein X represents Image or Image (wherein R5 represents a hydrogen atom or a lower alkyl group) and Y represents a hydroxy group, a lower alkoxy group, an amino group, a mono- or di-lower alkulamino group); R4 represents a hydrogen atom, a substituted or unsubstituted lower alkyl group or a group shown by formula: -CH2CO-A (wherein A represents an amino group or a group shown by formula: (wherein X and Y are as defined above), Image ABSTRACT OF THE DISCLOSURE (Cont'd) provided that when R1 and R2 are both hydrogen atoms, at least R4 represents a group other than a hydrogen atom and provided that either R3 or R4 represents a group other than a hydrogen atom, salts thereof, processes for producing them and medicaments containing these compounds. For example, the compounds of the present invention can be useful for improving disturbance of consciousness in schizophrenia, nervous depression the sequels to cerebro-vascular disorders, head injury, senile dementia, epilepsy etc., or improving hypobulia, depressive syndrome, memory loss, etc.

485150

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