5 of 32 Catalysts 2017, 7, 74 5 of 31 In following years, the substrate scope was further extended. Wang et al. showed that an asymmetric hydrogenation of 14, (with (S/S)/(R/R)[Et-DuPHOS-Rh]OTf), followed by Suzuki– Miyaura cross-couplings on protected 5-bromotrypthophan 15, ...