Crystalline rosuvastatin calcium trihydrate

摘要

The invention relates to a process for the preparation of a HMG - CoA reductase inhibitor such as rosuvastatin, as well as intermediates useful in such process. The invention also relates to salts of HMG-CoA reductase inhibitors and processes for preparing same as well as processes for preparing pharmaceutically acceptable salts of HMG-CoA reductase inhibitors.