Four glucosyl esters(a～d) of cinnamic acid were synthesized by the reaction of cinnamic acid with O-acetylglucopyranosyl bromide,O-acetylgalactopyranosyl bromide,O-acetylxylopyranosyl bromide and O-acetylmaltopyranos...Four glucosyl esters(a～d) of cinnamic acid were synthesized by the reaction of cinnamic acid with O-acetylglucopyranosyl bromide,O-acetylgalactopyranosyl bromide,O-acetylxylopyranosyl bromide and O-acetylmaltopyranosyl bromide in the presence of Bu4NBr(c and d were new compounds).Their structures were confirmed by IR,1HNMR,MS and elemental analysis.The 1HNMR and IR spectra showed that they were β-isomers.展开更多
文摘Four glucosyl esters(a～d) of cinnamic acid were synthesized by the reaction of cinnamic acid with O-acetylglucopyranosyl bromide,O-acetylgalactopyranosyl bromide,O-acetylxylopyranosyl bromide and O-acetylmaltopyranosyl bromide in the presence of Bu4NBr(c and d were new compounds).Their structures were confirmed by IR,1HNMR,MS and elemental analysis.The 1HNMR and IR spectra showed that they were β-isomers.
