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    Optically active liquid crystalline compound and a composition containing same
    2.
    发明授权
    Optically active liquid crystalline compound and a composition containing same 失效
    光学活性液晶化合物和含有其的组合物

    公开(公告)号：US5238603A

    公开(公告)日：1993-08-24

    申请号：US864678

    申请日：1992-04-07

    申请人： Kazutoshi Miyazawa ,  Naoyuki Yoshida ,  Masakazu Kaneoya

    发明人： Kazutoshi Miyazawa ,  Naoyuki Yoshida ,  Masakazu Kaneoya

    IPC分类号： C07C69/773 ,  C09K19/12 ,  C09K19/20 ,  C09K19/30 ,  C09K19/34 ,  C09K19/42

    CPC分类号： C09K19/126 ,  C09K19/2021 ,  C09K19/3003 ,  C09K19/3441 ,  C09K19/42

    摘要： A liquid crystal compound having specific features suitable to use for a display mode utilizing ferroelectric liquid crystals, particularly a large spontaneous polarization value and a liquid crystal composition using the compound are provided, which compound is an optically active liquid crystalline compound of the formula ##STR1## wherein l and m each are 0 or 1; at least one of R.sup.1 and R.sup.2 is an optically active alkoxy group of the formula ##STR2## wherein R.sup.3 is 2 or 3C alkyl and R.sup.4 is 3-18C alkyl, but R.sup.3 .noteq.R.sup.4 and the other thereof is 1-20C alkyl, alkoxy or alkanoyloxy, halogen or cyano; and A is a specified two or three rings compound.

    摘要翻译： 提供了具有适合用于利用铁电液晶的显示模式，特别是大的自发极化值的特定特征的液晶化合物和使用该化合物的液晶组合物，该化合物是下式的光学活性液晶化合物： （I）其中l和m各自为0或1; R 1和R 2中的至少一个是下式的光学活性烷氧基：其中R 3是2或3个C 3烷基，R 4是3-18个C烷基，但R 3和R 4的另一个是1-20C烷基，烷氧基或 烷酰氧基，卤素或氰基; 而A是一个指定的两个或三个环化合物。

    Process for selectively producing optically active 1-derivatized-2-diol using lipase CES and triglyceride
    4.
    发明授权
    Process for selectively producing optically active 1-derivatized-2-diol using lipase CES and triglyceride 失效
    使用脂肪酶CES和甘油三酸酯选择性地制备光学活性的1-衍生化的2-二醇的方法

    公开(公告)号：US5391494A

    公开(公告)日：1995-02-21

    申请号：US104408

    申请日：1993-08-10

    申请人： Kazutoshi Miyazawa ,  Naoyuki Yoshida

    发明人： Kazutoshi Miyazawa ,  Naoyuki Yoshida

    IPC分类号： C07D309/12 ,  C12P17/06 ,  C12P41/00

    CPC分类号： C12P41/004 ,  C07D309/12 ,  C12P17/06 ,  Y02P20/55 ,  Y10S435/874

    摘要： This invention provides optically active compounds which are starting materials of physiologically active substances, functional materials and the like, and the compounds are represented by the general formula (I): ##STR1## wherein R.sup.1 is hydrogen or alkanoyl of 2-20 carbon atoms, R.sup.2 is alkyl of 1-40 carbon atoms, alkenyl of 1-40 carbon atoms, or alkynyl of 1-40 carbon atoms in which the alkyl, alkenyl or alkynyl moiety is possible to have phenyl, cyclohexyl, pyridyl, pyrimidyl, pyridadyl, pyrazyl, dioxyl, bicyclooctyl, or a substituent thereof, or halogen, cyanogen, oxygen, nitrogen, silicon or sulfur, and X is a protective group removable by a chemical method of organic synthesis and C* is an asymmetric carbon.

    摘要翻译： 本发明提供作为生理活性物质，功能材料等的原料的光学活性化合物，该化合物由通式（I）表示：其中R 1为氢或2-20的烷酰基 碳原子，R2是1-40个碳原子的烷基，1-40个碳原子的烯基或1-40个碳原子的炔基，其中烷基，烯基或炔基部分可能具有苯基，环己基，吡啶基，嘧啶基， 吡啶基，吡嗪基，二恶基，双环辛基或其取代基，或卤素，氰，氧，氮，硅或硫，X是通过有机合成的化学方法除去的保护基，C *是不对称碳。

    Process for producing optically active compound
    6.
    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

    申请人： Kazutoshi Miyazawa ,  Naoyuki Yoshida

    发明人： Kazutoshi Miyazawa ,  Naoyuki Yoshida

    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。

    Optically active cyclopentenols and process for preparing the same
    8.
    发明授权
    Optically active cyclopentenols and process for preparing the same 失效
    光学活性环糊精及其制备方法

    公开(公告)号：US5107039A

    公开(公告)日：1992-04-21

    申请号：US567013

    申请日：1990-08-13

    申请人： Naoyuki Yoshida ,  Kazutoshi Miyazawa

    发明人： Naoyuki Yoshida ,  Kazutoshi Miyazawa

    IPC分类号： C07C27/02 ,  C07C35/06 ,  C07C67/02 ,  C07C69/025 ,  C12P41/00

    CPC分类号： C12P41/004 ,  C07C35/06

    摘要： Optically active cyclopentenols are here disclosed which are represented by the formula (I) ##STR1## (wherein R is a hydrogen atom or an acyl group having 2 to 15 carbon atoms, and the sign * denotes a chiral carbon atom).The optically active cyclopentenols can be prepared by a process which comprises the step of carrying out a transesterification between (.+-.)-cyclopentenol represented by the formula (IV) ##STR2## and triglyceride or vinyl ester by the use of esterase to obtain an optically active cyclopentenol represented by the formula (II) ##STR3## and an optically active cyclopentenol derivative represented by the formula (III) ##STR4## (wherein R' is an acyl group having 2 to 15 carbon atoms, and the sign * denotes a chiral carbon atom) which is a derivative of the enantiomer of the cyclopentenol (II); or alternatively, by another process which comprises the step of hydrolysis or alcoholysis of an optically active cyclopentenol derivative represented by the formula (III) ##STR5## (wherein R' is an acyl group having 2 to 15 carbon atoms, and the sign * denotes a chiral carbon atom) to obtain an optically active cyclopentenol represented by the formula (II) ##STR6## having the same absolute configuration as in the aforesaid derivative.

    Process for producing optically active hydroxy lactones
    9.
    发明授权
    Process for producing optically active hydroxy lactones 失效
    生产光学活性羟基试剂的方法

    公开(公告)号：US5084392A

    公开(公告)日：1992-01-28

    申请号：US626290

    申请日：1990-12-12

    申请人： Kazutoshi Miyazawa ,  Naoyuki Yoshida

    发明人： Kazutoshi Miyazawa ,  Naoyuki Yoshida

    IPC分类号： C12P17/04 ,  C12P17/06 ,  C12P41/00

    CPC分类号： C12P41/004 ,  C12P17/04 ,  C12P17/06

    摘要： The invention provides a method for producing an optically active hydroxy lactone which comprises reacting under substantially anhydrous conditions and in the presence of an enzyme an ester and a racemic compound represented by the general formula (I): ##STR1## wherein n is 0 or 1, any one of R.sup.1 and R.sup.2 is a hydroxy group, and R.sup.2 =R.sup.3 =H or R.sup.2 =R.sup.3 =CH.sub.3 when R.sup.1 is the hydroxy group, and R.sup.1 =R.sup.3 =H when R.sup.2 is the hydroxy group, to effect a transesterification reaction, and resolving to an optically active alcohol which has R- or S-configuration and the ester of the symmetric alcohol.

    Optically active compounds having plural chiral centers and production thereof
    10.
    发明授权
    Optically active compounds having plural chiral centers and production thereof 失效
    具有多个手性中心的光学活性化合物及其制备

    公开(公告)号：US5574182A

    公开(公告)日：1996-11-12

    申请号：US380519

    申请日：1995-01-30

    申请人： Kazutoshi Miyazawa ,  Naoyuki Yoshida

    发明人： Kazutoshi Miyazawa ,  Naoyuki Yoshida

    IPC分类号： C07B53/00 ,  C07C67/03 ,  C07C67/475 ,  C07C67/48 ,  C07C69/675 ,  C07C69/732 ,  C07C253/30 ,  C07C255/20 ,  C07C255/23 ,  C07D213/55 ,  C07D237/08 ,  C07D239/26 ,  C07D241/12 ,  C07D319/06 ,  C07D405/06 ,  C07D407/06 ,  C12P7/62 ,  C12P41/00 ,  C07C69/66

    CPC分类号： C12P41/004 ,  C07D319/06 ,  C12P7/62 ,  Y10S435/822 ,  Y10S435/911

    摘要： An ester is caused to act on a 2-substituted-3-hydroxycarboxylic acid ester as a racemate in the presence of hydrolase under substantially anhydrous conditions to effect a transesterification resulting in the resolution.The compound thus resolved is converted to an optically active 2,6-cis-2,5,6-substituted-1,3-dioxan-4-one and the resulting compound is recrystallized to give optically active 5,6-anti-2,5,6-substituted-1,3-dioxan-4-one and 5,6-syn-2,5,6-substituted-1,3-dioxan-4-one. Thus an optically active compound having plural chiral centers.Further, an optically active 2,5,6-substituted-1,3-dioxan-4-one obtained by transesterification and recrystallization is reacted with an alcohol to produce an optically active 2-substituted-3-hydroxycarboxylic acid ester.

    摘要翻译： 在基本上无水条件下，在水解酶的存在下，使酯作为外消旋物作用于2-取代-3-羟基羧酸酯上，进行酯交换反应，得到分辨率。 将如此分离的化合物转化为光学活性的2,6-顺式-2,5,6-取代-1,3-二恶烷-4-酮，将所得化合物重结晶，得到光学活性的5,6抗-2 ，5,6-取代-1,3-二恶烷-4-酮和5,6-syn-2,5,6-取代-1,3-二恶烷-4-酮。 因此，具有多个手性中心的光学活性化合物。 此外，通过酯交换和重结晶获得的光学活性的2,5,6-取代-1,3-二恶烷-4-酮与醇反应，得到光学活性的2-取代-3-羟基羧酸酯。