申请人:MECT CORPORATION
公开号:EP0281067A2
公开(公告)日:1988-09-07
This invention relates to novel derivatives of N-acetyl-3-fluoro-neurminic acid derivatives (I) and preparation thereof. The compound (I) can be synthesized by reacting a solution of alkyl 5-acetamido-2,6-anhydro-4,7,8,9-tetra-O-acetyl-2,3,5-trideoxy-D-glycero-D-galacto-2-enonate with (i) an inert gas containing fluorine or (ii) acetylhypofluorite obtained by passing the inert gas containing fluorine through a mixture of acetic acid/acetate by passing thereinto, and then removing a solvent and applying the residue through a silica gel column chromatography.
本发明涉及N-乙酰基-3-氟-新氨基甲酸酯衍生物(I)的新型衍生物及其制备方法。化合物(I)可通过将 5-乙酰氨基-2,6-脱水-4,7,8,9-四-O-乙酰基-2,3、5-三脱氧-D-甘油-D-半乳糖-2-烯酸烷基酯与(i)含氟惰性气体或(ii)将含氟惰性气体通入醋酸/醋酸盐混合物而得到的乙酰基次萤石反应,然后除去溶剂,将残留物通过硅胶柱层析。