Dithiazole compounds, matrix metalloprotease inhibitors and external preparations for the skin
申请人:——
公开号:US20040236111A1
公开(公告)日:2004-11-25
A dithiazole compound or a salt thereof expressed by formula (I):
1
wherein R
1
is hydrogen atom, alkyl, etc.; R
2
is hydrogen atom, hydroxy, alkyl, aryl, arylalkoxy, arylalkyl, etc.; R
3
is one group of formulae (II), (III) and (IV):
2
This compound has an excellent inhibiting action on matrix metalloprotease (MMPs) activity, and is useful for pharmaceutical, cosmetic and skin external compositions.
A pyrazolidine derivative or a salt thereof in accordance with the present invention is expressed by the following formula 1: ##STR1## wherein A represents a group expressed by --CH.sub.2 --, --CO--, --CS--, --CH.sub.2 CO--, or --CH.dbd.CH--CO--; B represents a group expressed by --O-- or --NH--; n is an integer of 1 or 2; R represents an alkenyl group; and R.sub.1 and R.sub.2 represent a lower alkyl or benzyl group. The pyrazolidine derivative above mentioned, as a radical scavenger, has antioxidant effect and lipid peroxidation inhibitory activity so as to be available for inhibiting brain infarction or brain edema.
Pyrazolidine derivative, radical scavenger, brain-infarction depressant, and brain-edema depressant
申请人:SHISEIDO COMPANY LIMITED
公开号:EP0736526A1
公开(公告)日:1996-10-09
A pyrazolidine derivative or a salt thereof in accordance with the present invention is expressed by the following formula 1:
wherein A represents a group expressed by - CH2-, -CO-, -CS-, -CH2CO-, or -CH=CH-CO-; B represents a group expressed by -O- or -NH-; n is an integer of 1 or 2; R represents an alkenyl group; and R1 and R2 represent a lower alkyl or benzyl group.
The pyrazolidine derivative above mentioned, as a radical scavenger, has antioxidant effect and lipid peroxidation inhibitory activity so as to be available for inhibiting brain infarction or brain edema.