| abstract |
An object of the present invention is to provide a novel low molecular weight compound exhibiting an osteogenesis-promoting action. This object is achieved by a compound having the general formula (I) or a pharmacologically acceptable salt thereof:n nwherein each substituent is defined as follows: R 1 represents an alkyl group or the like; R 2 represents an alkyl group or the like; R 3 represents a hydrogen atom or the like; and Z represents -CH= or -N=. |