A biocatalytic process to obtain optically enriched precursors of trans-4-(4-fluorophenyl)-3-hydroxymethylpiperidines, based on the enzymatic resolution of racemic derivatives of general formula III (where R
3
is preferably phenyl or benzyl) using cyclic anhydrides or the Meldrum's acid (2,2-dimethyl-1,3-dioxane-4,6-dione) as acylating agents of the hydroxyl group. Depending on the enzyme and the chosen reaction conditions, either of the two enantiomers may be obtained with high enantiomeric purity. These compounds are important intermediates in the synthesis of the paroxetine anti-depressive agent.
                            一种
生物催化过程,用于获取光学纯的反式-4-(4-
氟苯基)-3-羟甲基
哌啶的前体,基于对一般式III的外消旋衍
生物进行酶解,其中R3优选为苯基或苄基,使用环酐或梅尔德酸(2,2-二甲基-1,3-二氧杂
环己烷-4,6-二酮)作为羟基的酰化试剂。根据酶和所选择的反应条件,可以获得任意一种对映体,其具有高对映纯度。这些化合物是
帕罗西汀抗抑郁剂合成的重要中间体。