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.
一种具有
化学式(I)或(II)的化合物,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-保护基团,--COR.sup.3是可选择酯化或酰胺化的羧基,R.sup.4和R.sup.5分别为相同或不同的氢原子或酰基或链状或脂
环烃基,可选择具有芳基取代基,R.sup.6是NOH或O,n是0到3的整数,或者R.sup.4和R.sup.5与相邻的氮原子一起可以形成环或可选择取代的苄
亚胺基团,该化合物对大脑功能障碍具有治疗作用。