| 摘要 |
1.degree.) This invention relates to new pyranoderivatives of the formula: or III wherein X1 is H, C1 or Br and Z stands for : or II wherein X2 is H, Cl or Br, T is O or S, R is the residue of the compound of formula III without Y and Y stands for an arabinose, xylose or ribose rest, the acetylated form of the same, with either a pyrane or furane configuration and bound to the R residue to lead either to the .alpha. or to the .beta. anomer, to a preparation process of said compounds from stoichiometric proportions of the compound R - H and of the selected ose, and to compositions thereof associated with an appropriate diluent or carrier which are useful in the field of virus- and bacteria-induced diseases. |
