Acetic acid (5S,7R,8R,9S,10R)-8,9-diacetoxy-7-acetoxymethyl-1-acetyl-3-acetylamino-2,4-dioxo-6-oxa-1,3-diaza-spiro[4.5]dec-10-yl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
以96%的产率得到N-((5S,7R,8S,9S,10R)-8,9,10-Trihydroxy-7-hydroxymethyl-2,4-dioxo-6-oxa-1,3-diaza-spiro[4.5]dec-3-yl)-acetamide