C
39H
40N
2O
17S 、 在
tetra n-butyl ammonium tetrabromocuprate (II) 、
silver trifluoromethanesulfonate 作用下,
以
1,2-二氯乙烷 为溶剂,
以72%的产率得到Acetic acid (2R,3R,4R,5R,6R)-3-acetoxy-6-[(2R,3R,4R)-3-acetoxy-2-acetoxymethyl-5-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-3,4-dihydro-2H-pyran-4-yloxy]-2-acetoxymethyl-5-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-tetrahydro-pyran-4-yl ester