申请人:Tararov Vitali
公开号:US20070093660A1
公开(公告)日:2007-04-26
According to the invention, a process for the preparation of a statin is provided, comprising the following steps:
a) preparation of a compound of the formula II
in which
S
1
denotes a hydrogen atom or a hydroxylprotective group,
S
2
and S
3
, independently of one another, denote hydroxylprotective groups and
R
1
represents a hydrogen atom or a carboxylprotective group,
by stereoselective hydrogenation of a compound of the formula III
to give a compound of the formula II-a
and optionally introduction of a hydroxylprotective group and
b) lactonization of the compound of the formula II to give a compound of the formula I-a
根据本发明,提供了一种制备他汀类药物的方法,包括以下步骤:a)制备式II的化合物,其中S1表示氢原子或羟基保护基,S2和S3分别独立地表示羟基保护基,R1表示氢原子或羧基保护基,通过立体选择性氢化式III的化合物得到式II-a的化合物,并可选择引入羟基保护基;b)内酯化式II的化合物,得到式I-a的化合物。