(2S,3R)-3-(benzyloxy)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)butanoic acid → (R)-tert-Butoxycarbonylamino-[4-(2-methoxy-ethoxy)-phenyl]-acetic acid

Beteiligte Stoffe

Reaktionsschritte

Prepared by the same method as described in example 3 except that (i) 2-chloro-4-iodo-aniline was used in place of 4-bromo-2-chloro-aniline in step 1, and (ii) (R)-tert-butoxycarbonylamino-[4-(2-methoxy-ethoxy)-phenyl]-acetic acid was used in place of (R)-tert-butoxycarbonylamino-[4-(2-tert-butoxy-ethoxy)-phenyl]-acetic acid in step 2. (R)-tert-Butoxycarbonylamino-[4-(2-methoxy-ethoxy)-phenyl]-acetic acid was prepared as described in example 80.

Herkunft & Nachweise