Abstract: Heteroaromatic compounds of structural formula (I) or a pharmaceutically acceptable salt thereof, wherein W is a substituted heteroaryl, X and Y are each independently a bond, —O—, —S—, —S(O)—, —S(O)2—, —NR6—, —C(O)—, —C(CH3)(OH)— or —C(CH3)?CH—, u (I) is an integer from 1 to 4, and Ar is an optionally substituted phenyl or naphtyl, are inhibitors of stearoyl-coenzyme A delta-9 desaturase (SCD) The compounds of the present invention are useful for the prevention and treatment of conditions related to abnormal lipid synthesis and metabolism, including cardiovascular disease, such as atherosclerosis, obesity, Type 2 diabetes, insulin resistance, hyperglycemia, Metabolic Syndrome, neurological disease, cancer, and liver steatosis