申请人:Kyorin Pharmaceutical Co., Ltd.
公开号:EP2292594A1
公开(公告)日:2011-03-09
Disclosed is a preparation method which makes it possible to produce an aminoalcohol derivative having a high optical purity and to enable the large scale synthesis thereof at a low price.
For instance, a compound represented by the following general formula (8) is recrystallized in the course of the production process thereof
In this case, R1 represents, for instance, a trihalomethyl group; R2 represents, for instance, a hydrogen atom; R3 represents, for instance, a halogen atom; R4 represents, for instance, a lower alkyl group; X represents, for instance, a sulfur atom; n represents an integer ranging from 1 to 4; and W represents hydrogen chloride or hydrogen bromine.
本发明公开了一种制备方法,该方法可以生产出光学纯度较高的氨基醇衍生物,并能以较低的价格进行大规模合成。
例如,在生产过程中重结晶如下通式 (8) 所代表的化合物
其中,R1 代表三卤甲基;R2 代表氢原子;R3 代表卤素原子;R4 代表低级烷基;X 代表硫原子;n 代表 1 至 4 的整数;W 代表氯化氢或溴化氢。