Compounds of formula (I):
in which: R1 and R2 each represents a variety of organic groups; R3 and R4 each represents hydrogen or a variety of organic groups; A represents a group of formula (A-1):
[in which: R5 represents hydrogen, hydroxy or alkyl, R6 represents hydroxy, alkoxy, alkylthio or an amine residue, X and Y each represents oxygen or sulphur, and Z represents a direct single bond between the nitrogen atom shown and the benzene ring shown in formula (I), or an alkylene group],
G represents a single bond, alkylene or substituted alkylene; the broken line represents a single or double bond; when the broken line represents a double bond, D represents a carbon atom; and E represents an =N-O- group; when the broken line represents a single bond, D represents a CH group or a nitrogen atom, and E represents an oxygen atom, a sulphur atom, an -NH- group or a -CO- group}; and pharmaceutically acceptable salts, esters or other derivatives thereof have the ability to inhibit an ileal bile transporter and so may be used to treat or prevent hypercholesterolaemia.
Cyclobutene derivatives, their preparation and their therapeutic uses
申请人:Sankyo Company, Limited
公开号:US06329405B1
公开(公告)日:2001-12-11
Compounds of formula (I):
{wherein: R1 and R2 each represents a variety of organic groups; R3 and R4 each represents hydrogen or a variety of organic groups; A represents a group of formula (A-1):
[wherein: R5 represents hydrogen, hydroxy or alkyl, R6 represents hydroxy, alkoxy, alkylthio or an amine residue, X and Y each represents oxygen or sulfur, and Z represents a direct single bond between the nitrogen atom shown and the benzene ring shown in formula (I), or an alkylene group],
G represents a single bond, alkylene or substituted alkylene; the broken line represents a single or double bond; when the broken line represents a double bond, D represents a carbon atom; and E represents an ═N—O— group; when the broken line represents a single bond, D represents a CH group or a nitrogen atom, and E represents an oxygen atom, a sulfur atom, an —NH— group or a —CO— group}; and pharmaceutically acceptable salts, esters or other derivatives thereof have the ability to inhibit an ileal bile transporter and so may be used to treat or prevent hypercholesterolemia.