乙酸酐 、
溶剂黄146 、 p-methylphenyl 4,6-di-O-acetyl-2,3-dideoxy-erythro-hex-2-eno-1-thio-α-D-pyranoside 在
potassium acetate 、
manganese(III) triacetate dihydrate 作用下,
反应 6.3h,
以65%的产率得到((3aR,4R,6R,7S,7aS)-7-acetoxy-2-oxo-4-(p-tolylthio)hexahydro-4H-furo[3,2-c]pyran-6-yl)methyl acetate