Jacobsen, John R.; Choi, Seok Ki; Combs, Jesse; Fournier, Eric J.L.; Klein, Uwe; Pfeiffer, Juergen W.; Thomas, G. Roger; Yu, Cecile; Moran, Edmund J. Bioorganic and Medicinal Chemistry Letters, 2012 , vol. 22, # 2 p. 1213 - 1218