Method for producing an optically active 2-alkanol
    14.
    发明授权
    Method for producing an optically active 2-alkanol 失效
    光学活性2-链烷醇的制造方法

    公开(公告)号:US5973214A

    公开(公告)日:1999-10-26

    申请号:US154247

    申请日:1998-09-16

    IPC分类号: C12P7/62 C12P41/00 C07C29/03

    CPC分类号: C12P7/62 C12P41/004

    摘要: Both enantiomers of optically active 2-alkanol are produced by transesterification reaction of racemic 2-alkanol and aliphatic acid 2,2,2-trichloroethylester in the presence of enzyme derived from Candida antarctica.Both enantiomers of optically active 2-alkanol, which are useful as starting materials of liquid crystal materials and have optical purity of 99% or more, can be efficiently produced.

    摘要翻译: 光学活性2-链烷醇的两种对映异构体都是通过外消旋的2-链烷醇和脂肪酸2,2,2-三氯乙基酯在源自南极念珠菌的酶的存在下进行酯交换反应制备的。 作为液晶材料的起始原料,光学纯度为99%以上的光学活性2-链烷醇的两种对映异构体都可以有效地制造。

    Process for producing an intermediate of a new quinolone compound
    15.
    发明授权
    Process for producing an intermediate of a new quinolone compound 失效
    制备新型喹诺酮化合物的中间体的方法

    公开(公告)号:US5623078A

    公开(公告)日:1997-04-22

    申请号:US666742

    申请日:1996-06-20

    IPC分类号: C07D209/52 C07D209/02

    CPC分类号: C07D209/02

    摘要: A production process with good efficiency, and applicable to production of a synthetic intermediate of a new quinolone anti-fungus agent CP-99219, is provided.A production process of an intermediate of a new quinolone compound expressed by the formula (IV) ##STR1## wherein R.sup.3 represents a benzyl group, a diphenylmethyl group, etc. and R.sup.4 represents a linear or branched alkyl group of 1 to 8C, a cycloalkyl group, etc.which process employs as a starting substance, a cyclopropanetricarboxylic acid triester expressed by the formula (I) ##STR2## wherein R.sup.1 and R.sup.2 represent a linear or branched alkyl group, a cycloalkyl group, an aryl group or an aralkyl group,and passes through seven steps.

    摘要翻译: 提供了一种效率高,适用于生产新型喹诺酮类抗真菌剂CP-99219的合成中间体的生产方法。 由式(IV)表示的新型喹诺酮化合物的中间体(IV)的制备方法,其中R 3表示苄基,二苯基甲基等,R 4表示1〜8的直链或支链烷基 ,该方法用作起始物质的环烷基等,由式(I)表示的环丙烷三羧酸三酯,支化烷基,环烷基,芳基或芳烷基,并通过七个步骤。

    Process for producing optically active compound
    18.
    发明授权
    Process for producing optically active compound 失效
    光学活性化合物的制造方法

    公开(公告)号:US5128252A

    公开(公告)日:1992-07-07

    申请号:US690256

    申请日:1991-04-25

    IPC分类号: C12P41/00

    CPC分类号: C12P41/004

    摘要: The invention provides an optically active compound which is R- or S- ester having the general formula: ##STR1## wherein R.sup.1 is hydrogen or acyl of 2-20 carbon atoms, R.sup.2 is alkyl, alkenyl or alkynyl of 3-40 carbon atoms, and the carbon indicated by * is an asymmetric carbon atom.

    摘要翻译: 本发明提供了具有以下通式的R-或S-酯的光学活性化合物:其中R1是氢或2-20个碳原子的酰基,R2是3-40的烷基,烯基或炔基 碳原子,由*表示的碳是不对称碳原子。