| abstract |
A compound represented by the general formula (I) or (II) wherein R 1 nrepresents hydrogen atom or a C 1-6 alkyl group; R 2 and R 3 represent hydrogen atom orna C 1-6 alkyl group, or R 2 and R 3 together represent a 5- or 6-membered cycloalkyl group;nR 4 represents hydrogen atom, a C 1-6 alkyl group or the like; R 5 represents hydrogennatom, a C 1-6 alkyl group or the like; R 6 represents hydrogen atom or a C 1-6 alkyl group;nX represents -NR 7 -, -O-, -CHR 7 - or -S- where R 7 represents hydrogen atom, a C 1-6 alkylngroup or the like; and Y represents a phenylene group or a pyridinediyl group, or a saltnthereof. The compound of the present invention is useful as an agent for enhancingnthe activity of a retinoid compound. |