Acetic acid (2R,3S,4R,5R,6S)-3-acetoxy-2-acetoxymethyl-5-(4,5,6,7-tetrachloro-1,3-dioxo-1,3-dihydro-isoindol-2-yl)-6-p-tolylsulfanyl-tetrahydro-pyran-4-yl ester 在
N-溴代丁二酰亚胺(NBS) 、
4,4'-二氨基二苯乙烯-2,2'-二磺酸 作用下,
以
二氯甲烷 为溶剂,
反应 5.0h,
以72%的产率得到Acetic acid (2R,3S,4R,5R,6R)-3-acetoxy-2-acetoxymethyl-6-fluoro-5-(4,5,6,7-tetrachloro-1,3-dioxo-1,3-dihydro-isoindol-2-yl)-tetrahydro-pyran-4-yl ester