A compound of formula I
wherein R1, R2, R3 and Y are as defined herein,
or a pharmaceutically-acceptable and -cleavable ester, or acid addition salt thereof,
useful for promoting the release of parathyroid hormone, e.g. for preventing or treating bone conditions which are associated with increased calcium depletion or resorption or in which stimulation of bone formation and calcium fixation in the bone is desirable.
式 I 的化合物
其中 R1、R2、R3 和 Y 如本文所定义、
或其药学上可接受和可清除的
酯或酸加成盐、
可用于促进
甲状旁腺激素的释放,例如用于预防或治疗与
钙消耗或吸收增加有关的骨病,或用于刺激骨形成和
钙在骨中的固定。