NEW CHIRAL INTERMEDIATE, PROCESS FOR PRODUCING THE SAME AND ITS USE IN THE MANUFACTURE OF TOLTERODINE, FESOTERODINE, OR THE ACTIVE METABOLITE THEREOF

摘要

The compound of formula (I): is provided. It may be produced by subjecting a compound of formula (IV) to a reduction reaction wherein R represents hydrogen, straight or branched C1-C6 alkyl. This compound is a valuable intermediate which may be used in the synthesis of fesoterodine, tolterodine, its active metabolite, and related compounds.