There are described optically active derivatives of (R) 5-pentylamino-5-oxopentanoic acid and their pharmaceutically acceptable salts, having antagonistic activity towards cholecystokinin, and with the formula:
in which R₁ is selected from the groups 2-naphthyl, 3,4-dichlorobenzoyl and 3,4-dimethylbenzoyl and R₂ is a pentyl group or an alkoxyalkyl group with 4 carbon atoms, and in which the substituents on the central chiral group (marked with an asterisk in Formula (I)) have the R (rectus) conformation.
(R)5-戊
氨基-
5-氧代戊酸的光学活性衍
生物及其药学上可接受的盐类具有拮抗胆囊收缩素的活性,其
化学式为
其中 R₁ 选自 2-
萘基、3,4-二
氯苯甲酰基和 3,4-二甲基苯甲酰基,R₂ 为戊基或含有 4 个碳原子的烷氧基烷基,且中心手性基团上的取代基(在式 (I) 中用星号标出)具有 R(直)构象。