MERCK SHARP and DOHME CORP.; COBURN, Craig A.; WU, Hao; HU, Bin; ZHONG, Bin; WANG, Dahai; XU, Zaixu; SUN, Fei; JI, Tao; DAN, Zhigang Patent: WO2012/3642 A1, 2012 ; Location in patent: Example 3 ;