申请人:Teijin Limited
公开号:US04980287A1
公开(公告)日:1990-12-25
A 4H-3,1-benzoxazin-4-one compound of the formula (I): ##STR1## wherein R is a hydrogen atom or alkyl radical, A is an amino acid residue or a peptide having 2 to 3 amino acid residues, which amino acid residue may have a side chain thereof protected by a protective radical, X is an alkyl, fluoroalkyl, OR.sup.1 or NHR.sup.1 radical wherein R.sup.1 is an alkyl radical, and Y is a protective radical for an amino radical, and salts thereof, exhibit an excellent inhibitory activity against serine proteases, especially against human leukocyte elastase, and thus are useful as an effective component of a medicine for inhibiting elastase.
化合物的结构式(I)如下:##STR1## 其中R是氢原子或烷基基团,A是氨基酸残基或具有2至3个氨基酸残基的肽,该氨基酸残基的侧链可能被保护基保护,X是烷基、氟烷基、OR.sup.1或NHR.sup.1基团,其中R.sup.1是烷基基团,Y是氨基基团的保护基,以及其盐,对丝氨酸蛋白酶,特别是对人类白细胞弹性蛋白酶具有出色的抑制活性,因此可用作用于抑制弹性蛋白酶的药物的有效成分。