(2S,3S,4S,5R,6S)-3,4,5-triacetoxy-6-(2-[1,3]dioxolan-2-yl-4-nitro-phenoxy)-tetrahydro-pyran-2-carboxylic acid methyl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 3.0h,
以99%的产率得到(2S,3S,4S,5R,6S)-6-(2-[1,3]dioxolan-2-yl-4-nitro-phenoxy)-3,4,5-trihydroxy-tetrahydro-pyran-2-carboxylic acid methyl ester