Compounds of formula (I) suppress the normal signalling activity CB1 receptors, and are thus useful in the treatment of diseases or conditions which are mediated by CB1 receptor signalling activity, such as treatment of obesity and overweight, prevention of weigh gain, treatment of diseases and conditions directly or indirectly associated with obesity and overweight: wherein A1 is hydrogen, —COOH, or tetrazolyl； p and q are independently 0 or 1； A3 is phenyl or cycloalkyl, either of which is optionally substituted with R4 and/or R5； R4 and R5 are independently —R9, —CN, —F, —Cl, —Br, —OR9, —NR7R8, —NR7COR6, —NR7SO2R6, —COR6, —SR9, —SOR9, or —SO2R6； R6 is C1-C4 alkyl, cycloalkyl, —CF3 or —NR7R8； R7 and R8 are independently hydrogen, C1-C4 alkyl or cycloalkyl； R9 is hydrogen, C1-C4 alkyl, C1-C4 alkoxy, C1-C4 alkoxy(C1-C4 alkyl)-, cycloalkyl, or fully or partially fluorinated C1-C4 alkyl； R1 (i) a bond； (ii) a divalent radical of formula —(CH2)aB1(CH2)b wherein a and b are independently O, 1, 2 or 3 provided that a+b is 1, 2 or 3, and B1 is —CO—, -0-, —S—, —SO—, —SO2—, —CH2—, —CHCH3—, —CHOH— or —NR7—； or (iii) a divalent radical selected from —C(R10)(R11)—*, —C(R10)(R11)—O—*, —C(R10)(R11)CH2—*, —C(R10)(R11)CH2—O—*, —CH2C(R10)(R11)—*, —CH2C(R10)(R11)—O—*, —CH2—O—C(R10)(R11)—* and —C(R10)(R11)—O—CH2—*, wherein the bond indicated by an asterisk is attached to the pyrazole ring； Z is as defined in the specification； R10 is hydrogen and R11 is (C1-C3)alkyl or —OH； or R10 and R11 are both (C1-C3)alkyl； or R10 and R11 taken together with the carbon atom to which they are attached form a (C3-C5)cycloalkyl ring.
