The present invention relates to a novel synthetic route for the preparation of fingolimod and its pharmaceutically acceptable salts. The synthetic strategy comprises reaction of 2-(4- octylphenyl)-acetaldehyde with nitro acetonide, and subsequent conversions of the resulting acetonide protected nitro-alcohpl intermediates of formulae (8), (9) and (10) to the penultimate acetonide protected amino intermediates of formula (11), which on deprotection with acid yields Fingolimod and its corresponding salts, having purity conforming to regulatory specification.
本发明涉及一种新型的合成路线,用于制备Fingolimod及其药学上可接受的盐。该合成策略包括将2-(4-辛基苯基)
乙醛与硝基乙酮
脲反应,然后将产生的乙酮
脲保护的硝基醇中间体(式8,9和10)转化为次级乙酮
脲保护的
氨中间体(式11),通过酸解保护制得Fingolimod及其相应的盐,其纯度符合监管规范。