the instant invention provides novel processes and intermediates useful in the preparation of certain n -- β - alaninamide compounds , which compounds are glycogen phosphorylase inhibitors useful in the treatment of diseases such as hypercholesterolemia , hyperglycemia , hyperinsulinemia , hyperlipidemia , hypertension , atherosclerosis , diabetes , diabetic cardiomyopathy , infection , tissue ischemia , myocardial ischemia , and in inhibiting tumor growth .