PROCESS FOR THE PREPARATION OF HMG-COA REDUCTASE INHIBITORS AND INTERMEDIATES THEREOF

摘要

The present invention provides an improved process for preparing HMG-CoA reductase inhibitors such as rosuvastatin calcium, fluvastatin sodium, and pitavastatin calcium under a mild condition, using a novel amide-bond-containing compound having R2-N-O-R1 moiety as a key intermediate. And also, the present invention provides the novel compound, an intermediate useful for the preparation thereof, and a process for the preparation thereof.