CARBOSTYRIL DERIVATIVES FOR INHIBITING SKIN ERYTHEMA AND/OR SKIN PIGMENTATION

摘要

PCT No. PCT/JP98/03657 Sec. 371 Date Feb. 10, 2000 Sec. 102(e) Date Feb. 10, 2000 PCT Filed Aug. 18, 1998 PCT Pub. No. WO99/09011 PCT Pub. Date Feb. 25, 1999The present invention provides an agent for inhibiting skin erythema and/or skin pigmentation, containing at least one selected from the group consisting of the carbostyril derivative and salt thereof represented by the general formula, (wherein R1 is a hydrogen atom, a lower alkyl group or the like; R2 is a hydrogen atom, a lower alkyl group, a lower alkoxy group or the like; R3 and R4 are lower alkyl groups which may have hydroxyl groups as substituents or the like; the carbon-carbon bond between 3- and 4-positions in the carbostyril skeleton is a single bond or double bond).