ethyl 3-O-benzyl-4-O-chloroacetyl-2-O-methyl-1-thio-β-L-fucopyranoside 、
Benzoic acid (2S,3R,4R,5R,6S)-5-acetoxy-4-hydroxy-2-methyl-6-phenylsulfanyl-tetrahydro-pyran-3-yl ester 在
iodonium di(2,4,6-trimethylpyridine) perchlorate 作用下,
以
乙醚 、
1,2-二氯乙烷 为溶剂,
反应 0.33h,
以80%的产率得到phenyl 2-O-acetyl-4-O-benzoyl-3-O-(3-O-benzyl-4-O-chloroacetyl-2-O-methyl-α-L-fucopyranosyl)-1-thio-α-L-rhamnopyranoside