| 主权项 |
1. A method for sulfating a glycoside at the 2-position, comprising:
(a) treating a glycoside having hydroxyl groups at positions 2 and 4 in a cis relationship with a tin reagent to provide a glycoside 2,4-stannylene acetal; and (b) treating the 2,4-stannylene acetal with a sulfating agent to provide a 2-sulfated glycoside. |
