Pharmacol. 1970, 19, 1463. was discovered during our search for novel hypolipidemic agents that the isothiazole cyclizine analogues 3 and 4 significantly reduced the concentration of serum cholesterol and triglycerides in the serum of rats. However, compounds 3 and 4 were considered to lack sufficient potency to warrant further investigation. We subsequently prepared and evaluated a number of analogues of these ...