Novel proline derivatives of the following formula
wherein:
A is -O-, -NH-,
or absent;
B is
-(CH2k or
where k is an integer of 1 to 3, R1 is hydrogen atom or a lower alkyl having 1 to 5 carbon atoms; W is
or CH3- where R2 is hydrogen atom, halogen atom or a lower alkoxy;
X is -S-, -SO-, -S02-, -O- or -NH-;
R is
or a lower alkyl having 1 to 5 carbon atoms where 1 is an integer of 0 to 3, Y and Z are the same or different and each is hydrogen atom, halogen atom, a lower alkyl having 1 to 5 carbon atoms which may be substituted by fluorine atom, amino, nitro, hydroxyl or a lower alkoxy, and Y and Z may combinedly form a saturated or unsaturated 5- or 6-membered ring; and
n is an integer of 1 to 6, which specifically inhibit prolyl endopeptidase activity and can be used for the prevention and/or treatment of dementia and amnesia as agents which act directly on the central symptoms of dementia.
下式的新型脯氨酸衍生物
其中
A 是-O-、-NH-
或不存在;
B 是
-(CH2k或
其中 k 是 1 至 3 的整数,R1 是氢原子或具有 1 至 5 个碳原子的低级烷基; W 是
或 CH3-,其中 R2 是氢原子、卤素原子或低级烷氧基;
X是-S-、-SO-、-S02-、-O-或-NH-;
R 是
或具有 1 至 5 个碳原子的低级烷基,其中 1 为 0 至 3 的整数,Y 和 Z 相同或不同,且各自为氢原子、卤素原子、可被氟原子、氨基、硝基、羟基或低级烷氧基取代的具有 1 至 5 个碳原子的低级烷基,且 Y 和 Z 可结合形成饱和或不饱和的 5 或 6 元环;以及
n 为 1 至 6 的整数,可特异性抑制脯氨酰内肽酶的活性,作为直接作用于痴呆症中心症状的制剂,可用于预防和/或治疗痴呆症和健忘症。
Novel proline derivatives of the following formula (I) ##STR1## wherein each symbol is as defined in the specification, which specifically inhibit prolyl endopeptidase activity and can be used for the prevention and/or treatment of dementia and amnesia as agents which act directly on the central symptoms of dementia.