4-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)phenoxy]piperidine-1-carboxylic acid isopropyl ester 、 trifluoromethanesulfonic acid 4-[1-tert-butoxycarbonylamino-2-((S)-cyanopyrrolidin-1-yl)-2-oxoethyl]phenyl ester 生成 (S)-4-{4'-[1-tert-butoxycarbonylamino-2-((S)-2-cyanopyrrolidin-1-yl)-2-oxoethyl]biphenyl-4-yloxy}piperidine-1-carboxylic acid isopropyl ester