| abstract |
Disclosed is a process for chemically synthesizing a pharmaceutical intermediate, in particular to a novel intermediate and novel process for synthesizing an anticoagulant drug fondaparinux sodium intermediate - full protection heparin pentasaccharide. The process has a high reaction efficiency and a simple reaction operation, and enables the reaction intermediate to be easily purified, thus being suitable for the industrialized production of the full protection heparin pentasaccharide. |