1 g (2.23 mM) of 5-bromo-3-pyridinyl 2,3,4-tri-O-acetyl-5-thio-β-D-xylo-pyranoside, 0.4 g (2.67 mM) of 4-methoxyphenylboronic acid, 1.6 g (4.46 mM) of carbonate resin and 0.02 g (0.004 mM) of [1,1-bis(diphenylphosphino)ferrocene]-dichloropalladium(II) dichloromethane are mixed in 7 ml of DME and 5 ml of methanol. The reaction mixture is heated for 20 minutes at 110° C. by microwaves. It is filtered, the material on the filter is rinsed with methanol and the organic phases are concentrated. The product is purified by chromatography on a silica column (eluent: dichloromethane/ethyl acetate 98/2, then 70/30; v/v) to give the expected product in the form of a cream-colored powder with a yield of 80%.
