Pyrrolidine derivative and process for producing the same

摘要

A pyrrolidine derivative, which is an intermediate for a quinuclidine derivate side chain useful as a squalene synthase inhibitor, and producing method thereof are disclosed. A pyrrolidine derivative (X) represented by the following formula (X) (wherein R<1 >and R<2 >each represents a hydroxy group, C1-6 alkoxy groups or the like; R<3 >represents a hydrogen atom, a benzyl group or the like); or a salt thereof or a hydrate thereof: