申请人:Nippon Mining Co., Ltd.
公开号:US05098602A1
公开(公告)日:1992-03-24
This invention provides a novel halogen-containing ester compound represented by the following general formula (I): ##STR1## (wherein R is an alkyl group, A is selected from a single bond, --O--, --COO-- and --CO--, both of X and Y are halogen atoms or either one of X and Y is a halogen atom and the other is a hydrogen atom, each of m and n is 0 or 1, m+n=0 or 1, each of k and l is an integer of 1 or more, provide k<l), a liquid crystal composition and a light switching element each containing the above compound as well as a novel fluorophenol compound represented by the following general formula (II): ##STR2## (wherein each of k and l is an integer of 1 or more, provided k<l) as an intermediate for the synthesis of the above ester compound and a method of producing the same.
这项发明提供了一种新颖的含卤酯基化合物,其通式为(I):##STR1##(其中R是烷基,A从单键、-O-、-COO-和-CO-中选择,X和Y均为卤素原子或X和Y中的一个为卤素原子另一个为氢原子,m和n分别为0或1,m+n=0或1,k和l分别为1或更多的整数,提供k
Inhibitory Effects of 3-O-Acyl-(+)-catechins on Epstein-Barr Virus Activation
作者:Shinichi Uesato、Keisuke Taniuchi、Ayako Kumagai、Yasuo Nagaoka、Ryota Seto、Yukihiko Hara、Harukuni Tokuda、Hoyoku Nishino
DOI:10.1248/cpb.51.1448
日期:——
exploratory investigation of antitumor-promoting catechins, 3-O-acyl-(+)-catechins of varying carbon lengths from C(4) to C(18) were assessed for inhibitory effects on the activation of the Epstein-Barr virus early antigen. Like 3-O-acyl-(-)-epigallocatechins, the (+)-catechin derivatives showed promising effects with the C-3 acyl chain of C(8)-C(11) carbon atoms.
在对促进肿瘤的儿茶素进行探索性研究的过程中,评估了碳长度从C(4)到C(18)的3-O-酰基-(+)-儿茶素对Epstein-活化的抑制作用巴尔病毒早期抗原。像3-O-酰基-(-)-表没食子儿茶素一样,(+)-儿茶素衍生物在C(8)-C(11)碳原子的C-3酰基链上显示出可喜的效果。
[EN] ANTIMICROBIAL COMPOSITIONS AND METHODS OF USE<br/>[FR] COMPOSITIONS ANTIMICROBIENNES ET PROCEDES D'UTILISATION
申请人:STAPLETON PAUL
公开号:WO2005034976A1
公开(公告)日:2005-04-21
A catechin is modified in at least one position (most preferably in the 3-position of the C-ring) to increase its lipophilicity. Contemplated catechins are demonstrated to have significantly improved antibacterial properties, likely due to catastrophic membrane damage.
一种儿茶素至少在一个位置上进行改变(最好是在C环的3号位置)以增加其亲脂性。考虑到的儿茶素已被证明具有显著改善的抗菌性能,可能是由于破坏细胞膜所致。
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