A process for preparing a compound of formula (II) or a pharmaceutically acceptable salt thereof: wherein R1a is as defined in the specification, the compounds being useful in the preparation of therapeutic agents, particularly metalloproteinase inhibitors.
一种制备式(II)化合物或其药学上可接受的盐的过程:其中R1a如规范所定义,所述化合物在制备治疗剂方面有用,特别是
金属蛋白酶抑制剂。