5-bromo-3-pyridinyl 2,3,4-tri-O-acetyl-5-thio-β-D-xylopyranoside 、 4-Methylethoxy-phenylboronic acid 以5-[4-(1-methylethoxy)phenyl]-3-pyridinyl 2,3,4-tri-O-acetyl-5-thio-β-D-xylopyranoside is obtained in the form of a white solid (yield=55%)的产率得到5-[4-(1-methylethoxy)phenyl]-3-pyridinyl 2,3,4-tri-O-acetyl-5-thio-β-D-xylo-pyranoside