The present invention is directed to a novel process for the preparation of compounds of formula (I) and pharmaceutically acceptable salts and solvates thereof; comprising: reacting a compound of formula (V) wherein LG1 is a leaving group, with a mixture of a zinc salt and an organo-lithium reagent; in a first hydrocarbon solvent; at a temperature in the range of from about -78°C to about room temperature; to yield a mixture of the corresponding compound of formula (VI), wherein M1 is lithium, and the zinc salt; admixing to the mixture of the compound of formula (VI) and the zinc salt, a first ether solvent; to yield the corresponding compound of formula (VII), wherein M2 is a reactive zinc species.
本发明涉及一种新型制备化合物(I)及其药学上可接受的盐和溶剂的方法;包括:将化合物(V)与LG1为离去基团的混合物反应,其中该混合物为
锌盐和
有机锂试剂;在第一烃溶剂中,在约-78°C至室温范围内的温度下进行反应;得到相应化合物(VI)的混合物,其中M1为
锂,以及
锌盐;将化合物(VI)和
锌盐的混合物与第一醚溶剂混合;得到相应的化合物(VII),其中M2为反应性
锌物种。