申请人:TETRAPHASE PHARMACEUTICALS INC
公开号:WO2016065290A1
公开(公告)日:2016-04-28
Provided herein are improved processes tor convening C7-amino-substituted tetracyclines to C7-fluoro-substituted tetracyclines, as well as intermediates produced by or used in these processes. In one embodiment, a thermal fluorination method is provided in which a suspension comprising a non-polar organic solvent and a C7-diazo-substituted tetracycline hexafluorophosphate, hexafluoarsenate or hexafluorosilicate salt, or a salt, solvate or combination thereof, is healed to provide a C7-fluoro-substituted tetracycline, or salt, solvate or combination thereof. In another embodiment, a photolytic fluorination is provided in which a solution comprising an ionic liquid and a C-7diazo-substituted tetracycline tetrafluoroborate, hexafluorophosphate, hexafluoroarsenate or hexafluorosilicate salt, or a salt, solvate or combination thereof, is irradiated to provide a C7-fluoro-substituted tetracycline, or salt, solvate or combination thereof.
本文提供了改进的过程,用于将C7-氨基取代四环素转化为C7-氟取代四环素,以及由这些过程产生或使用的中间体。在一种实施方式中,提供了一种热氟化方法,其中治疗悬浮液包括非极性有机溶剂和C7-重氮基取代的四环素六氟磷酸盐、六氟砷酸盐或六氟硅酸盐,或其盐、溶剂或其组合物,以提供C7-氟取代四环素,或其盐、溶剂或其组合物。在另一种实施方式中,提供了一种光解氟化方法,其中治疗溶液包括离子液体和C-7重氮基取代的四环素四氟硼酸盐、六氟磷酸盐、六氟砷酸盐或六氟硅酸盐,或其盐、溶剂或其组合物,经辐射后可提供C7-氟取代四环素,或其盐、溶剂或其组合物。