Compounds of formula (I), are
cannabinoid CB1 receptors, useful, inter alia in the treatment of
obesity:wherein A1 is
hydrogen, —COOH, or tetrazolyl, and A2 is
hydrogen, —COOH, tetrazolyl, —CN, —CF3, —COR6, —SO2R6, —OR7, —NR7R8, —NHCOR6, and —NR7SO2R8 provided that one of A1 and A2 is either —COOH or tetrazolyl; p is 0 or 1 and A3 is phenyl or cycloalkyl, either of which is optionally substituted with R4 and / or R5; q is 0 or 1; R1 is a bond, or —(CH2)aB1(CH2)b— wherein a and b are independently 0, 1, 2 or 3 provided that a+b is not greater than 4, and B1 is —CO—, —O—, —S—, —SO—, —SO2—, —CH2—, —CHOH— or —NR7—; R2 is a bond, —CH2)aB1(CH2)b— or —[(CH2)aB1(CH2)b]n-A4-[(CH2)cB2(CH2)d]m— wherein a, b, and B1 are as defined for R1; B2 is as defined for B1, c and d are independently 0, 1, 2 or 3; with the proviso that a+b+c+d is not greater than 6, n and m are independently 0 or 1 and A4 is a monocarbocyclic or monoheterocyclic ring, having 3 to 8 ring atoms, optionally substituted with one or more of —F, —Cl, —Br, —CN, —CF3, C1-C4
alkyl, cycloalkyl, —OR9, oxo or —NR7R8; R3 is
hydrogen, C1-C4
alkyl, cycloalkyl, —CF3, —OR9, —NR7R8, —(CH2)sCOR6, —(CH2)sSO2R6, —(CH2)sNR7COR6, —(CH2)sNR7COOR8, —(CH2)sNR7SO2R6, wherein s is 1, 2, 3 or 4; R4 and R5 independently —R9, —CN, —F, —Cl, —Br, —OR9, —NR7R8, —NR7COR6, —NR7SO2R6, —COR6, —SR9, —SOR9, —SO2R6, (C1-C4
alkyl)OR9, —(C1-C4 alkyl)NR7R8, —(C1-C4 alkyl)NR7COR6, C1-C4 alkyl)NR7COOR8, —(C1-C4 alkyl)NR7SO2R6, —(C1-C4 alkyl)COR6, —(C1-C4 alkyl)SO2R6, —NR7COOR8, or [N—(C1-C4 alkyl)]-tetrazolyl; R6 is C1-C4 alkyl, cycloalkyl, —CF3 or —NR7R8; R7 and R8 are independently hydrogen, C1-C4 alkyl or cycloalkyl; and R9 is hydrogen, C1-C4 alkyl, cycloalkyl, fully or partially fluorinated C1-C4 alkyl.