The present invention provides calcium sensing receptor modulators (CaSR). In particular, the compounds described herein are useful for treating, managing, and/or liessening the severit of diseases, disorders, syndromes and/or condtions associated wih the modulation of calcium sensing receptors (CaSR). The invention also provides herein the pharmaceutical compositions thereof, and methods for treating, managing, and/or lessening the severityof diseases, disorders, syndromes and/or conditions associated with the modulation of CaSR. The invention also relates to process for the preparation of the compounds of the invention.發明係提供鈣感測受體調節劑(CaSR)。特別地,本文所描述之化合物對於治療、管理及/或減輕與鈣感測受體(CaSR)調節相關聯的疾病、失調、綜合症或症狀嚴重性是有用的。本發明亦於本文提供其藥學組成物,以及治療、管理及/或減輕與CaSR調節相關聯的疾病、失調、綜合症或症狀嚴重性的方法。本發明亦相關於本發明之化合物的製備方法。