6-{6-[6-((S)-3-tert-Butoxy-2-tert-butoxycarbonylamino-propionylamino)-pyridine-2-carbonyl]-pyridine-2-carbonyl}-pyridine-2-carboxylic acid ethyl ester 在
sodium hydroxide 作用下,
以
四氢呋喃 为溶剂,
反应 24.0h,
以85%的产率得到6-{6-[6-((S)-3-tert-Butoxy-2-tert-butoxycarbonylamino-propionylamino)-pyridine-2-carbonyl]-pyridine-2-carbonyl}-pyridine-2-carboxylic acid