申请人:Niddam-Hildesheim Valerie
公开号:US20050197501A1
公开(公告)日:2005-09-08
Processes for preparing a calcium salt of a statin from an ester derivative or protected ester derivative of the statin by using calcium hydroxide are provided. The ester or protected ester derivative is contacted with calcium hydroxide to obtain the calcium salt. Preferred statins are rosuvastatin, pitavastatin and atorvastatin, simvastatin and lovastatin. In processes beginning with a protected statin ester derivative, the protecting group is hydrolyzed during salt formation by contact with calcium hydroxide, or is contacted with an acid catalyst followed by contact with calcium hydroxide.
本发明提供了一种使用氢氧化钙从他汀的酯衍生物或保护酯衍生物制备钙盐的过程。将酯或保护酯衍生物与氢氧化钙接触,以获得钙盐。首选他汀是罗伊司他、匹伐他汀和阿托伐他汀、辛伐他汀和洛伐他汀。在以保护的他汀酯衍生物开始的过程中,保护基在与氢氧化钙接触时水解,在盐形成过程中,或与酸催化剂接触后再与氢氧化钙接触。