A process for the preparation of compounds represented by formulae (I) and (IV):
1
(wherein symbols in the formulae are described in the description) and the novel 1,3,4-oxadiazole derivative compound represented by formula (I). According to the present invention, preparation of intermediates (compounds of formula (IV)) of 1,3,4-oxadiazole derivatives useful as pharmaceuticals (elastase inhibitors) can be prepared efficiently via novel synthesis intermediates (compounds of formula (I)).
                            一种制备式(I)和式(IV)所代表化合物的方法:1(其中式中的符号在说明中描述),以及式(I)所代表的新型
1,3,4-噁二唑衍
生物化合物。根据本发明,可以通过新型合成中间体(式(I)化合物)高效地制备用于制药(
弹性酶抑制剂)的
1,3,4-噁二唑衍
生物的中间体(式(IV)化合物)。