申请人:SmithKline Beecham Corporation
公开号:US07294725B1
公开(公告)日:2007-11-13
A process for the preparation of a compound of formula (I)
or a single enantiomer thereof, or a salt or a solvate thereof, wherein W is a chiral auxiliary or hydrogen and P1 and P2 are each independently selected from hydrogen or a protecting group, which comprises:
a)treatment of a compound of formula (II),
or a salt or a solvate thereof, wherein W is a chiral auxiliary and P1 and P2 are each independently chosen from a protecting group, with a compound of formula (III) to form a resulting product,
b) treating the resulting product with a reducing agent to form the compound of formula (I), or a single enantiomer thereof, or a salt or a solvate thereof.
一种制备式(I)化合物或其单一对映体、盐或溶剂化物的方法,其中W是手性辅助基或氢,P1和P2各自独立地选择自氢或保护基,包括:a)用式(II)化合物或其盐或溶剂化物处理,其中W是手性辅助基,P1和P2各自独立地选择自保护基,形成一个产物;b)用还原剂处理所得产物,形成式(I)化合物或其单一对映体、盐或溶剂化物。