| abstract |
Compounds represented by the general formula [1] or salts thereof; and osteoporosis remedies, osteoblast activators, and osteoclast inhibitors, containing the same: wherein X is halogeno; R1 is hydrogen, substituted or unsubstituted C1-6 alkyl, substituted or unsubstituted C2-6 alkenyl, substituted or unsubstituted C2-6 alkynyl, a substituted or unsubstituted aromatic group, substituted or unsubstituted aralkyl, substituted or unsubstituted acyl, substituted or unsubstituted arylsulfonyl, substituted or unsubstituted C1-6 alkylsulfonyl, or hydroxy; R2 is substituted or unsubstituted C1-21 alkyl; R3, R5 and R6 are each independently hydrogen or halogeno; and R4 is hydrogen or substituted or unsubstituted C1-6 alkyl. |