Acetic acid (3aS,4S,6R,7R,7aS)-6-acetoxymethyl-4-(3-cyano-phenoxy)-2-oxo-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yl ester 在
Dowex-1 (basic) resin 作用下,
以
甲醇 为溶剂,
以83%的产率得到3-((2S,3S,4S,5S,6R)-3,4,5-Trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-benzonitrile