BOEHRINGER INGELHEIM INTERNATIONAL GMBH; BOYER, Stephen, James; BURKE, Jennifer; GUO, Xin; KIRRANE JR., Thomas, Martin; SNOW, Roger, John; ZHANG, Yunlong Patent: WO2011/71725 A1, 2011 ; Location in patent: Page/Page column 50-51 ; WO 2011/071725 A1