Disclosed are compounds having the formula: wherein R1, R2 and R3 are as defined herein, and methods of making and using the same, including use as inhibitors of BMP1, TLL1 and/or TLL2 and in treatment of diseases associated with BMP1, TLL1 and/or TLL2 activity.本發明揭示如下式化合物:其中R1、R2與R3均如本文定義,並揭示其製造及使用方法,包括用為BMP1、TLL1與/或TLL2之抑制劑,及用於治療與BMP1、TLL1與/或TLL2活性相關之疾病。