申请人:Daicel Chemical Industries, Ltd.
公开号:US05508461A1
公开(公告)日:1996-04-16
An (S)-1-phenyl-2-substituted propane derivative shown by the following formula (I) ##STR1## wherein R.sup.1 and R.sup.2 represent a lower alkyl group, etc., or R.sup.1 and R.sup.2 may form together an alkylene group, etc.; R.sup.3, R.sup.4 and R.sup.5 represent a hydrogen atom, etc.; and X represents a hydroxyl group which may be protected with a protective group, or a halogen atom etc., can readily be produced (i) by permitting a microorganism belonging to the genus Torulaspora, the genus Candida, the genus Pichia or the like to act on a phenylacetone derivative and asymmetrically reducing the compound, or (ii) by sterically inverting an (R)-enantiomer. (R,R)-1-phenyl-2-[(2-phenyl-1-methylethyl)amino]ethanol derivative having a high optical purity can easily be obtained from the compound of the formula (I). The ethanol derivative is useful as an anti-obesity agent and the like.
公式(I)所示的一种(S)-1-苯基-2-取代丙烷衍生物,其中R.sup.1和R.sup.2代表较低的烷基基团等,或R.sup.1和R.sup.2可以共同形成烷基基团等;R.sup.3、R.sup.4和R.sup.5代表氢原子等;X代表可用保护基保护的羟基或卤原子等,可通过以下方法轻松制备:(i)使属于酵母属、念珠菌属、毛孢酵母属等的微生物作用于苯乙酮衍生物并对化合物进行不对称还原,或者(ii)通过立体上反转(R)-对映体。从公式(I)的化合物中可以轻松获得具有高光学纯度的(R,R)-1-苯基-2-[(2-苯基-1-甲基乙基)氨基]乙醇衍生物。这种乙醇衍生物可用作抗肥胖剂等。