申请人:NeuroSearch A/S
公开号:US05107010A1
公开(公告)日:1992-04-21
The present invention related to novel compounds useful in the manufacture of astaxanthin and to processes for their preparation. The novel intermediates have the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 independently are C.sub.1-6 -alkyl which may be branched or phenyl, and ##STR2## wherein R.sup.1 is alkyl, alkoxy, NO.sub.2, NH.sub.2 or halogen.
本发明涉及用于生产虾青素的新化合物以及其制备方法。这些新颖的中间体具有以下结构式:其中R^1、R^2和R^3独立地为C1-6-烷基,可以是支链或苯基,以及其中R^1为烷基、烷氧基、NO2、NH2或卤素。