| abstract |
The invention relates to synthesis methods for the preparation of statin derivatives, which methods proceed by way of a key intermediate of formula I wherein X is halogen, acyloxy, activated hydrocarbyloxy, activated hydrocarbylthio or N(CH 3 )OCH 3 , R a is a hydroxy-protecting group, and R b is a carboxy-protecting group, and, as well as to the compound of formula I, to further intermediates and methods for their preparation by Friedel-Crafts acylation. |