Heterocyclic inhibitors of farnesyl protein transferase.

Inhibition of farnesyl protein transferase is effected by compounds of the formula its enantiomers, diastereomers, pharmaceutically acceptable salts, prodrugs or solvates thereof, wherein:    A₁ and A₂ are each independently H, alkyl, substituted alkyl, cycloalkyl, substituted cycloalkyl, phenyl or substituted phenyl;    G₁ is S or O;    G₂ is H, -C(O)OH, -C(O)NH₂, 5-tetrazolyl, -C(O)N(R₇)OH or -CH₂OH;    X is O or R₈N;    Y and Z are each independently -CH₂- or -C(O)-;    R₁, R₂, R₃, R₄, R₅, R₆ and R₇ are each independently H or alkyl;    R₁ may also be alkanoyl,    R₁ and A₁ taken together may be -(CH₂)m;    R₈ is H, alkyl, phenyl, phenylalkyl, substituted phenyl, (substituted phenyl)alkyl or -C(O)R₉;    R₉ is H, alkyl, phenyl, phenylalkyl, substituted phenyl or (substituted phenyl)alkyl;    m is 3 or 4;    n is 0, 1 or 2;    p is 0, 1 or 2; and    q is 0 or 1, with the proviso that when p is 0, then q is also 0.