乙酸酐

(+)-(1R,4R,5R,6R)-3-methylidene-5-exo,6-exo-(isopropylidenedioxy)-7-oxabicyclo[2.2.1]heptan-2-one

三-O-乙酰基-D- 葡萄烯糖

benzyl 1-methyl-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidine-6-carboxylate