申请人:Fujirebio Inc.
公开号:US05481009A1
公开(公告)日:1996-01-02
Methods of producing carboxylic acid ester derivatives of formulae (I) and (II), which are useful, for instance, as intermediates for producing an anti-hypercholesterolemic agent having an inhibitory effect on HMG-CoA Reductase: ##STR1## wherein R.sup.1 and R.sup.2 are independently a protective group for hydroxyl group, or R.sup.1 and R.sup.2 integrally constitute a protective group for hydroxyl groups; R.sup.3 is an alkyl group, or an aryl group; and R.sup.4 is a substituted aryl group, a substituted heterocyclic group, a substituted vinyl group, or a substituted cycloalkenyl group; and ##STR2## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are respectively the same as defined in the above formula (I), are disclosed. In addition, intermediates for use in these methods of producing the carboxylic acid ester derivatives are disclosed.
生产具有以下式(I)和(II)的羧酸酯衍生物的方法,例如,作为生产对HMG-CoA还原酶具有抑制作用的抗高胆固醇药物的中间体:##STR1## 其中R.sup.1和R.sup.2分别是羟基的保护基,或者R.sup.1和R.sup.2整体构成羟基的保护基;R.sup.3是烷基,或芳基;R.sup.4是取代芳基,取代杂环基,取代乙烯基,或取代环烯基;和##STR2## 其中R.sup.1,R.sup.2,R.sup.3和R.sup.4分别与上述式(I)中定义的相同,被揭示。此外,还揭示了用于这些生产羧酸酯衍生物的方法的中间体。