申请人:Hoffmann-La Roche Inc.
公开号:US05245056A1
公开(公告)日:1993-09-14
The invention relates to a novel process for producing a compound having the formula ##STR1## wherein R.sup.1, R.sup.2 and X are described herein, via wherein R corresponding .beta.-keto- and .beta.-hydroxy-.delta.-lactones, as well as novel intermediates which occur in the process.
该发明涉及一种生产具有以下结构式的化合物的新工艺:##STR1## 其中R.sup.1、R.sup.2和X的描述见本文,通过其中R对应的β-酮和β-羟基-δ-内酯,以及在该过程中出现的新中间体。