| abstract |
Compounds of formula (I), and salts and prodrugs thereofn n wherein: n R¹ represents optionally substituted C₁₋₆alkyl or C₃₋₇cycloalkyl; n R² represents an optionally substituted phenyl or pyridyl group; n R³ represents C₁₋₆ alkyl or halo; n R⁴ represents C₃₋₇ cycloalkyl; n X is 0, 1, 2 or 3; nare CCK and/or gastrin antagonists. They and compositions thereof are therefore useful in therapy. |