| 摘要 |
<p>Compounds of formula I <IMAGE> or a solvate thereof, in which Y represents H, -OR3 or an oxo group, R1 represents a methyl or methoxy group, R2 represents H, a C1-10 alkanoyl or benzyl group substituted at the phenyl group, and R3 represents H, a lower alkyl group, C1-10 alkanoyl or benzoyl substituted at the phenyl group are useful for the treatment of osteoporosis.</p> |
