A compound of formula (I) or a pharmaceutically acceptable salt or prodrug ester thereof, wherein the groups R2, R3, R4, Q, X and Y are as defined in the specification, is useful in the treatment of bone conditions related to increased calcium depletion or resorption.
式(I)的化合物或其药学上可接受的盐或前药酯,其中基团R2、R3、R4、Q、X和Y的定义在说明书中,可用于治疗与
钙流失或吸收增加有关的骨疾病。