(R)-2-[(4aR,6R,7R,8R,8aS)-7-Acetylamino-6-(2-naphthalen-1-yl-ethoxy)-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy]-propionic acid 在
溶剂黄146 、
三乙胺 、
N,N'-二环己基碳二亚胺 作用下,
以
水 为溶剂,
生成 (R)-4-((S)-2-{(R)-2-[(2R,3R,4R,5S,6R)-3-Acetylamino-5-hydroxy-6-hydroxymethyl-2-(2-naphthalen-1-yl-ethoxy)-tetrahydro-pyran-4-yloxy]-propionylamino}-propionylamino)-4-carbamoyl-butyric acid methyl ester