申请人:Hoechst Aktiengesellschaft
公开号:US05442088A1
公开(公告)日:1995-08-15
Process for the preparation of phosphorus-containing L-amino acids, their derivatives and intermediates for this process L-amino acids of the formula I and salts thereof, ##STR1## in which R.sup.1 to R.sup.5 are defined as in claim 1 and n is 0 or 1, are obtained according to the invention by a) reacting an optically active S-homoserine lactone of the formula II, ##STR2## with hydrogen chloride in the presence of an alcohol of the formula R.sup.5 --OH to give novel compounds of the formula III, ##STR3## in which R.sup.3, R.sup.4 and R.sup.5 are defined as in formula I, except that R.sup.5 =H, and b) reacting the resulting compound of formula III with a compound of formula IV, R.sup.1 (O).sub.n -R(OR.sup.2).sub.2 (IV) and if desired, hydrolyzing the product to give a compound of formula I, in which R.sup.5 =H.
制备含磷L-氨基酸及其衍生物和中间体的过程。该过程中,采用公式I及其盐,其中R.sup.1至R.sup.5如权利要求1所定义,n为0或1的L-氨基酸,通过以下步骤获得:a)在R.sup.5-OH的存在下,将公式II的光学活性S-同型半胱氨酸内酯与氯化氢反应,得到公式III的新化合物,其中R.sup.3、R.sup.4和R.sup.5如公式I所定义,但R.sup.5=H;b)将公式III的产物与公式IV的化合物R.sup.1(O).sub.n-R(OR.sup.2).sub.2反应,如有需要,水解产物以得到公式I的化合物,其中R.sup.5=H。