Substituted isoxazolylthiophene compounds represented by general formula (I) or salts thereof, wherein R1 and R2 represents each C1-5 alkyl; R3 represents cyano or CONR5R6 (wherein R5 and R6 represent each hydrogen or C1-10 alkyl); R4 represents C1-5 alkyl or phenyl; and n is an integer of from 0 to 2. Because of specifically potentiating the functions of cell differentiation inducing factors occurring in vivo, these compounds are useful in treating or preventing various bone diseases or nervous diseases.
This invention provides a substituted isoxazolylthiophene compound represented by the formula
wherein R1 and R2 individually represent an alkyl group of 1-5 carbon atoms, R3 represents a cyano group or a group CONR5R6 (in which R5 and R6 individually represent a hydrogen atom or an alkyl group of 1-10 carbon atoms), R4 represents an alkyl group of 1-5 carbon atoms or a phenyl group, and n is an integer of 0-2, or a salt thereof.
The compounds of the invention are useful for the treatment or prevention of various bone diseases or nerve diseases, because they specifically enhance the action of the cell differentiation induction factors found in a living body.