申请人:Deshpande Pandurang Balwant
公开号:US20080161560A1
公开(公告)日:2008-07-03
The invention relates to commercially viable process for the preparation of Rosuvastatin by an early introduction of correct absolute stereochemistry at C-5 (S) of Rosuvastatin side chain followed by regioselective chain extension using novel side chain building blocks and less expensive reagents. It is yet another object of the invention is to provide novel intermediates that may be used for the preparation of Calcium salt of Rosuvastatin.Formula (I).
本发明涉及一种商业上可行的罗伐他汀制备工艺,通过在罗伐他汀侧链的C-5位(S)早期引入正确的绝对立体化学,然后使用新型侧链构建块和价格较低的试剂进行区域选择性链延伸。另一个本发明的目的是提供可用于制备罗伐他汀钙盐的新型中间体。公式(I)。