A process for the preparation and/or purification of clavulanic acid or a pharmaceutically acceptable salt thereof comprises
i) contacting impure clavulanic acid or an alkali metal salt thereof in an organic solvent, with tertiary octylamine;
ii) isolating the tertiary-octylamine salt of clavulanic acid formed;
iii) converting the thus formed salt into clavulanic acid or a pharmaceutically acceptable salt or ester thereof.
制备和/或纯化
克拉维酸或其药学上可接受的盐的工艺包括
i) 将有机溶剂中的不纯
克拉维酸或其碱
金属盐与
叔辛胺接触;
ii) 分离出所形成的
克拉维酸叔辛胺盐
iii) 将由此形成的盐转化为
克拉维酸或其药学上可接受的盐或酯。