Acetic acid (2R,3R,4S,5R,6R)-3,5-diacetoxy-2-acetoxymethyl-6-[4-(3-methyl-2-oxo-2H-pyrazin-1-yl)-butoxy]-tetrahydro-pyran-4-yl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
以87%的产率得到3-Methyl-1-[4-((2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-butyl]-1H-pyrazin-2-one