(2R,3S,4S,4aR,12aS)-2-hydroxymethyl-3-hydroxy-4-(α-D-glucopyranosyl-1-oxy)-3,4,4a,12a-tetrahydro-2H-naphtho-[2,3-b]pyrano[2,3-e][1,4]oxathiine-6,11-dione 、
乙酸酐 在
吡啶 作用下,
反应 16.0h,
以83%的产率得到(2R,3R,4S,4aR,12aS)-2-acetoxymethyl-3-acetoxy-4-(2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl-1-oxy)-3,4,4a,12a-tetrahydro-2H-naphtho[2,3-b]pyrano[2,3-e][1,4]oxathiine-6,11-dione