申请人:Takeda Chemical Industries, Ltd.
公开号:US05021439A1
公开(公告)日:1991-06-04
A compound having the formula (I) or (II) ##STR1## wherein R.sup.1 is a hydrogen atom or an organic residue bonded via a carbon atom, R.sup.2 is a hydrogen atom or a N-protecting group, --COR.sup.3 is an optionally esterified or amidated carboxyl group, R.sup.4 and R.sup.5 are the same or different and respectively a hydrogen atom or an acyl group or a chain or alicyclic hydrocarbon group optionally having an aryl substituent, R.sup.6 is NOH or O, n is an integer of 0 to 3, or R.sup.4 and R.sup.5 together with the adjacent nitrogen atom may form a ring or an optionally substituted benzylidene amino group, which is useful therapeutics of brain dysfunction.
化合物具有公式(I)或(II) ##STR1## 其中R.sup.1是氢原子或通过碳原子键合的有机残基,R.sup.2是氢原子或N-保护基,--COR.sup.3是可选酯化或酰胺化的羧基,R.sup.4和R.sup.5分别是相同或不同的氢原子或酰基或链或脂环烃基,可选地具有芳基取代基,R.sup.6是NOH或O,n是0至3的整数,或R.sup.4和R.sup.5与相邻的氮原子一起可以形成环或可选取代的苯甲酰亚氨基,这是治疗脑功能障碍的有用药物。