| 摘要 |
The object of the present invention is to provide a therapeutic agent for osteoporosis with a good bone mass-increasing effect, but almost no blood calcium-increasing effect. The present invention provides a therapeutic agent for osteoporosis which comprises, as an active ingredient, a compound of Formula (1): wherein R1 and R2 each represent a hydrogen atom or a methyl group, R3 represents a C1-C4 alkyl group which may be substituted with a fluorine atom, m represents an integer of 0 to 3, and A represents -CH2-CH2-, -CH=CH- or -C=C-.
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