Pyrazole derivatives, process for their preparation and pharmaceutical compositions containing them
申请人:MORISHITA PHARMACEUTICAL CO. LTD.
公开号:EP0029363A1
公开(公告)日:1981-05-27
yrazole derivatives of the general formula:
wherein R1 represents an alkyl group of 7 to 17 carbon atoms, R2 represents a hydrogen atom, a lower alkyl group or a phenyl group and R3 represents
or -CH20H, wherein R4 represents a hydrogen atom or a lower alkyl group, R5 represents -CH2CH2OH or
wherein R6 represents a hydroxyl group or a lower alkoxy group with a proviso that when R1 represents an alkyl group 7 to 11 carbon atoms and R2 represents a hydrogen atom, R3 does not represent
, are novel compounds which have excellent antilipemic activity with a very low toxicity to humans, and accordingly are suitable for use as pharmaceutical agents in the treatment of lipemia.
A series of 5-alkylpyrazole derivatives was synthesized and evaluated for potent hypolipidemic activity in rats. Many pyrazole derivatives with an alkyl group at the 5 position of the pyrazole ring were found to possess high hypolipidemic activity. Homologation of the alkyl chain led to marked increase in activity, but introduction of other substituents at other sites on the pyrazole ring failed to