申请人:Daicel Chemical Industries, Limited
公开号:US05679557A1
公开(公告)日:1997-10-21
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-\x9b(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.
以下式子(I)所示的(S)-1-苯基-2-取代丙烷衍生物:##STR1## 其中,R.sup.1和R.sup.2代表低碳链基等,或R.sup.1和R.sup.2可以共同形成一个亚烷基等;R.sup.3,R.sup.4和R.sup.5代表氢原子等;X代表一个羟基,该羟基可以用保护基保护,或卤原子等,可以通过(i)让属于Torulaspora属,Candida属,Pichia属或类似菌属的微生物作用于苯乙酮衍生物并不对称还原化合物,或(ii)通过立体上反转(R)-对映体来轻松制备。可以从式(I)的化合物中轻松获得具有高光学纯度的(R,R)-1-苯基-2-\x9b(2-苯基-1-甲基乙基)氨基!乙醇衍生物。该乙醇衍生物可用作抗肥胖剂等。