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公开(公告)号：US5076947A
公开(公告)日：1991-12-31
申请号：US361864
申请日：1989-06-06
IPC分类号： C07C33/20 , C07C41/00 , C07C43/18 , C07C43/196 , C07C43/205 , C07C43/23 , C07C67/00 , C07C69/94 , C07C255/46 , C07C255/53 , C07C255/55 , C07C255/57 , C07D213/30 , C07D213/79 , C07D213/80 , C07D239/26 , C07D239/28 , C07D239/34 , C09K19/20 , C09K19/30 , C09K19/34 , C09K19/54
CPC分类号： C07D213/30 , C07C255/53 , C07C255/55 , C07C255/57 , C07C33/20 , C07C43/196 , C07C43/23 , C07D213/79 , C07D213/80 , C07D239/26 , C07D239/28 , C07D239/34 , C09K19/2028 , C09K19/3068 , C09K19/3444 , C09K19/3463
摘要： An optically active compound having a high twistability and almost no change in the intrinsic pitch depending on temperature, and a liquid crystal composition comprising the compound are provided, which optically active compound is expressed by the formula ##STR1## wherein R.sup.1 and R.sup.2 each represent 1-20C alkyl or alkoxy, halogen or H; l, m and n each represent 0 or 1; and ##STR2## wherein Y represents H, halogen or cyano.
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公开(公告)号：US4962031A
公开(公告)日：1990-10-09
申请号：US189163
申请日：1988-05-02
CPC分类号： C12P13/001 , C12P13/002 , C12P41/004 , C12P7/62
摘要： The present invention provides a process for producing optically active compounds by a biochemical method in which specific compounds having hydroxyl groups are reacted with esters in the presence of hydrolases. The compounds have the following general formula: ##STR1## wherein X is selected from halogen atoms and a cyano group. Y is selected from the group constituting substituted phenyl groups, halogen atoms, cyano, trifluoromethyl and amino groups and alkylamino and alkyloxycarbonyl groups in which alkyl groups have 1-20 carbon atoms. R is an alkylene group having 1-20 carbon atoms and n is 0 or 1.
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13.发明授权Optically active-1-(2-halogen-substituted-phenyl)-ethanol and its derivative 失效光学活性-1-（2-卤代苯基） - 乙醇及其衍生物
公开(公告)号：US4904409A
公开(公告)日：1990-02-27
申请号：US239277
申请日：1988-09-01
CPC分类号： C07C255/00 , C09K19/2028
摘要： An optically active compound having characteristics necessary for realizing liquid crystal compositions provided with suitable characteristics, particularly a negative temperature characteristic and a very high twistability, and a liquid crystal composition containing the compound are provided, which optically active compound is expressed by the formula ##STR1## wherein R.sup.1 and R.sup.2 are 1-20 C alkyl or alkoxy or H; l, m and n are 0 or 1; X is F, Cl, Br or CN; and ##STR2## each independently represent ##STR3## wherein Y is H, halogen or CN.
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公开(公告)号：US4882451A
公开(公告)日：1989-11-21
申请号：US189162
申请日：1988-05-02
申请人： Naoyuki Yoshida , Masakazu Kaneoya , Manabu Uchida
发明人： Naoyuki Yoshida , Masakazu Kaneoya , Manabu Uchida
CPC分类号： C12P9/00 , C07F7/0812 , C07F7/0818 , C12P41/004
摘要： The present invention provides optically active compounds and a process for producing the optically active compounds by a biochemical method in which specific compounds having hydroxyl or acyloxy groups are reacted with esters in the presence of hydrolase. The compounds have the following general formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are selected from alkyl groups having 1-4 carbon atoms and phenyl groups, X is selected from a hydrogen atom and ##STR2## R is selected from alkyl groups having 1-20 carbon atoms, and C* indicates an asymmetric carbon atom.
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15.发明授权
公开(公告)号：US4971909A
公开(公告)日：1990-11-20
申请号：US227248
申请日：1988-08-02
申请人： Masakazu Kaneoya , Naoyuki Yoshida , Manabu Uchida
发明人： Masakazu Kaneoya , Naoyuki Yoshida , Manabu Uchida
CPC分类号： C12P17/12 , C12P41/004
摘要： The present invention provides a process for producing optically active compounds by a biochemical method in which specific compounds having pyridine skeletons and hydroxyl groups are reacted with esters in the presence of hydrolases.The compounds have the following general formula: ##STR1## wherein X is selected from substituted pyridyl groups. Y is selected from hydrogen and halogen atoms, a cyano group, and a trifluoromethyl group. R is an alkylene group having 1-20 carbon atoms, and n is 0 or 1. Q is an alkylene group having 1-20 carbon atoms and m is 0 or 1.
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公开(公告)号：US4965018A
公开(公告)日：1990-10-23
申请号：US326795
申请日：1989-03-21
申请人： Manabu Uchida , Naoyuki Yoshida , Masakazu Kaneoya
发明人： Manabu Uchida , Naoyuki Yoshida , Masakazu Kaneoya
IPC分类号： C07D213/30 , C07D213/55 , C09K19/34 , C09K19/54 , G02F1/13
CPC分类号： C07D213/30 , C09K19/3444 , C09K19/3463
摘要： A novel optically active pyridylethanol derivative having a high twistability and also a superior temperature characteristic is provided, which derivative is expressed by the formula ##STR1## wherein R is an alkyl group of alkoxy group each of 1 to 20 carbon atoms or hydrogen atom, m and n each represent 0 or 1, ##STR2## each independently represent ##STR3## wherein Y is any one of H, halogen atom or CN and ##STR4## is a pyridine ring the N atom of which may be present at an optionally chosen site thereof.
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