(S)-2-Amino-3-[4-(pyridin-4-ylmethoxy)-phenyl]-propionic acid tert-butyl ester 、
(S)-2-[(Azepane-1-carbonyl)-amino]-4-methyl-pentanoic acid 生成 [S-(R*,R*)]-2-{2-[(Azepane-1-carbonyl)-amino]-4-methyl-pentanoylamino}-3-[4-(pyridin-4-ylmethoxy)-phenyl]-propionic acid tert-butyl ester