(2,4-Dimethyl-pyridin-3-yloxy)-acetic acid ethyl ester 在
lithium hydroxide 、
1-羟基苯并三唑 、
盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下,
以
四氢呋喃 为溶剂,
生成 (R)-N-{(1R,3R,4R)-1-Benzyl-4-[2-(2,4-dimethyl-pyridin-3-yloxy)-acetylamino]-3-hydroxy-5-phenyl-pentyl}-3-methyl-2-(2-oxo-tetrahydro-pyrimidin-1-yl)-butyramide