| abstract |
(57) [Summary] [Wherein, R 1 represents an acyl group, a lower alkenyl group; or a lower alkyl group optionally substituted with an aryl or a heterocyclic group; R 2 represents a hydrogen, a lower alkyl group, a hydroxy (lower) alkyl group, a halo (lower ) such as an alkyl group, R 3 is hydrogen or halogen, R 4 is a heterocyclic group, or an aryl group, each of which may be substituted with suitable one or more substituents, (Wherein, R 9 and R 10 each represent hydrogen, a lower alkyl group or a substituted lower alkyl group). And a pharmaceutically acceptable salt thereof, a method for producing them, a pharmaceutical composition containing them, and abnormal bone metabolism in humans or animals. And a method for treating a disease. |