申请人:WARNER-LAMBERT COMPANY
公开号:EP1178034A1
公开(公告)日:2002-02-06
GABA-related pro-drugs of the formula (III) are provided that when administered to humans or other mammals provide an increased duration of active compound in the plasma compared to compounds of corresponding structure in which labile groups are not present. The compounds are of the formula (III)
In the above formula:
P represents hydrogen or methyl;
Q represents a labile amine- or amide-forming organic group that becomes removed in the human or animal body;
R1 represents straight or branched C2 - C6 alkyl, C3 - C6 cycloalkyl or phenyl;
R2 represents hydrogen or methyl; and
R3 represents hydrogen, methyl or carboxyl; and
R4 represents hydrogen or a labile ester-forming group selected from substituted and unsubstituted C1 - C6 alkyl, benzyl and phenyl groups that become removed in the human or animal body. In the above formula when R1 is phenyl, R2, R3 and R4 are not simultaneously hydrogen. Pharmaceutically acceptable salts of any salt-forming compound within the above class are also included. The compounds may be used to treat a range of neurological conditions, e.g. epilepsy and pain.
提供了公式(III)的GABA相关的前药,当给人类或其他哺乳动物使用时,与相应结构中不存在不稳定基团的化合物相比,在血浆中提供了较长的活性化合物持续时间。该化合物的公式为(III):
在上述公式中:
P代表氢或甲基;
Q代表不稳定胺或酰胺形成的有机基团,在人体或动物体内被去除;
R1代表直链或支链C2-C6烷基,C3-C6环烷基或苯基;
R2代表氢或甲基;
R3代表氢,甲基或羧基;
R4代表氢或不稳定酯形成基团,选择自取代和未取代的C1-C6烷基,苄基和苯基,在人体或动物体内被去除。
在上述公式中,当R1为苯基时,R2、R3和R4不同时为氢。还包括上述类别中任何盐形成化合物的药学上可接受的盐。这些化合物可用于治疗一系列神经系统疾病,例如癫痫和疼痛。