(S)-2-((4aR,6R,7R,8R,8aS)-6-Benzyloxy-2,2-dimethyl-7-octadecanoylamino-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy)-propionic acid methyl ester 在
氢氧化钾 、
N-羟基丁二酰亚胺 、
N,N'-二环己基碳二亚胺 作用下,
以
1,4-二氧六环 为溶剂,
生成 (R)-4-{(S)-2-[(S)-2-((4aR,6S,7R,8R,8aS)-6-Benzyloxy-2,2-dimethyl-7-octadecanoylamino-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy)-propionylamino]-propionylamino}-4-carbamoyl-butyric acid benzyl ester