Abstract: The present invention relates to aminomethylcarboxylic acid derivatives general formula (I), wherein Z is (CH2)n, O, S, SO, SO2 or N—R5; n is 0, 1 or 2; X represents 1-3 substituents independently selected from hydrogen, halogen, (C1-6)alkyloxy, (C3-6)cycloalkyloxy, (C6-12)aryloxy, (C6-12)aryl, thienyl, SR6, SOR6, SO2R6, NR6R6, NHR6, NH2, NHCOR6, NSO2R6, CN, COOR6 and (C1-4)alkyl, optionally substituted with halogen, (C6-12)aryl, (C1-6)alkyloxy or (C6-12)aryloxy; or 2 substituents at adjacent positions together represent a fused (C5-6)aryl group, a fused (C5-6)cycloalkyl ring or O—(CH2)m—O; m is 1 or 2; Y represents 1-3 substituents independently selected from hydrogen, halogen, (C1-4)alkyloxy, SR6, NR6R6 and (C1-4)alkyl, optionally substituted with halogen; R1 is COOR7 or CONR8R9; R2 and R6 are (C1-4)alkyl; R3, R4 and R5 are independently hydrogen or (C1-4)alkyl; R7, R8 and R9 are independently hydrogen, (C1-4)alkyl, (C6-12)aryl or arylalkyl; or a pharmaceutically acceptable salt thereof.