Compounds of formula (I) are inhibitors of neutrophil elastase, wherein A is C-R1 or N; -X1-X2- is CR15=N- or -NR19-CO-; and R1-R6, R15 and R16are as defined in the claims.
式(I)的化合物是中性粒细胞
弹性蛋白酶的
抑制剂,其中A为C-R1或N;-X1-X2-为CR15=N-或-NR19-CO-;而R1-R6,R15和R16如权利要求中所定义。