| 摘要 |
A chondrogenesis promoter comprising as an active ingredient a compound represented by general formula (I) or a salt thereof:wherein R1 represents a halogen atom, a lower alkyl group, a lower alkoxy group, etc.; R2 represents a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a lower alkoxy group, an acyl group, an aryl group, a heterocyclic group, etc.; R1 represents a lower alkyl group, a cycloalkyl group, an aryl group, a heterocyclic group, etc.; R4 represents a hydrogen atom, a lower alkyl group, an aryl group, a heterocyclic group, etc.; X and Y represent -CH2-, -NH-or -O-; and n represents an integer of 0-4.
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