Compounds of formula (I):
[in which: X is a group of formula >CR
1
R
2
or >SO
2
; Y is a group of formula >NH or >CR
1
R
2
; Z is a group of formula >C═O or >CH
2
or a direct bond; R
1
is hydrogen and R
2
is hydrogen, carboxy or hydroxy; or R
1
and R
2
together represent an oxo group, a methylenedioxy group or a hydroxyimino group; R
3
is hydrogen or lower alkyl; R
4
represents two hydrogen atoms, or an oxo or hydroxyimino group; R
5
is hydrogen, lower alkyl or halogen; R
6
is hydrogen, lower alkoxy or carboxy; R
7
and R
8
are each hydrogen, lower alkyl or halogen; and pharmaceutically acceptable salts and esters thereof can be used for the treatment or prophylaxis of acute or chronic neurodegenerative diseases or conditions such as Alzheimer's Disease, Parkinson's Disease, Huntington's Chorea, Multiple Sclerosis or the sequelae to acute ischaemic events such as heart attack, stroke or head injury and for protection against ischaemic damage to tissues of peripheral organs.
化合物的公式 (I):[其中:X 是公式 >CR1R2 或 >SO2 的基团;Y 是公式 >NH 或 >CR1R2 的基团;Z 是公式 >C═O 或 >
CH2 或直接键;R1 是氢原子,R2 是氢原子,羧基或羟基;或者 R1 和 R2 一起表示一个氧代基团、一个甲二氧基基团或一个羟
肟基团;R3 是氢原子或低碳基;R4 表示两个氢原子,或一个氧代基团或羟
肟基团;R5 是氢原子、低碳基或卤素;R6 是氢原子、低烷氧基或羧基;R7 和 R8 分别是氢原子、低碳基或卤素;以及其药学上可接受的盐和酯,可用于治疗或预防急性或慢性神经退行性疾病或病症,如阿尔茨海默病、帕
金森病、亨廷顿舞蹈病、多发性硬化症或急性缺血事件的后遗症,如心脏病发作、中风或头部损伤,并保护外围器官组织免受缺血损伤。