| abstract |
A benzodiazepine derivative of formula (1), or a pharmaceutically acceptable salt thereof, wherein (a) R1 is -CH2CHOH(CH2)a R4 or a ketone group -CH2CO(CH2)a R5 in which a is 0 or 1 and R4 and R5 are selected from alkyl and cycloalkyl groups and saturated heterocyclic groups optionally substituted at a hetero-atom; (b) R2 and R3 are independently selected frown aromatic carbocyclic and heterocylic residues; and (c) W and X are selected independently from halogen and hydrogen atoms and alkyl and alkoxy groups. These compounds are gastrin and/or CCK-B receptor antagonists. |