Bock M G, DiPardo R M, Williams P D, Pettibone D J, Clineschmidt B V, Ball R G, Veber D F, Freidinger R M
Department of Medicinal Chemistry, Merck, Sharp & Dohme Research Laboratories, West Point, Pennsylvania 198486.
J Med Chem. 1990 Sep;33(9):2321-3. doi: 10.1021/jm00171a003.