A tricyclic compound useful as a medicine, represented by general formula (I), a pharmaceutically acceptable salt thereof, an intermediate therefor, a process for producing the same, and a cholecystokinin antagonist, wherein R1 represents hydrogen, carboxyl, protected carboxyl, carboxy(lower)alkyl, protected carboxy(lower)alkyl, carboxy(lower)alkanoyl, protected carboxy(lower)alkanoyl, carboxy(lower)alkenoyl, protected carboxy(lower)alkenoyl, optionally substitued heterocyclic carbonyl(lower)alkyl, or optionally substituted heterocyclic carbonyl(lower)alkanoyl; R2 represents optionally substituted aryl; and R3 represents acyl.
一种
三环化合物,可用作药物,由通式(I)表示,其药学上可接受的盐,其中间体,其制备方法以及胆囊收缩素拮抗剂,其中R1表示氢,羧基,保护羧基,羧基(较低)烷基,保护羧基(较低)烷基,羧基(较低)酰基,保护羧基(较低)酰基,羧基(较低)烯酰基,保护羧基(较低)烯酰基,可选地取代的杂环羰基(较低)烷基,或可选地取代的杂环羰基(较低)酰基; R2表示可选地取代的芳基; R3表示酰基。