(2R,3R,4R,6S)-6-(allyloxy)-3-hydroxy-2-methyltetrahydro-2H-pyran-4-yl acetate 、
acetic acid (1S)-1-phenyl-2-(phenylsulfanyl)ethyl ester 在
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
以76%的产率得到allyl (3-O-acetyl-4-O-[(S)-1-phenyl-2-(phenylsulfanyl)ethyl]-2,6-dideoxy-α-D-glucopyranosyl)-(1->4)-3-O-acetyl-2,6-dideoxy-α-D-glucopyranoside