A series of bisbenzaldehydes and structurally related analogs, conveniently synthesized via microwave-assisted reactions, were evaluated in vitro against drug susceptible and multi-drug resistant Mycobacterium tuberculosis, against virulent Mycobacterium bovis, against Mycobacterium ulcerans and against two Mycobacterium avium subspecies. Among the 33 substances that were tested, compound 12, i.e. 4,4'-[1,12-dodecanediyl(oxy)]bisbenzaldehyde, emerged as the most promising hit. Its activity was further confirmed in an intracellular growth inhibition assay of M. tb in murine J774 A.1 macrophages. None of the compounds showed significant cytotoxicity on human C3A hepatocytes in a neutral red dye uptake assay and no genotoxicity or mutagenicity was observed as demonstrated by a VITOTOX (TM) test and confirmed with a comet assay. (C) 2013 Elsevier Masson SAS. All rights reserved.
GREASE COMPOSITION, VISCOUS AGENT, AND MECHANICAL ELEMENT
申请人:KAWATA Ken
公开号:US20080194441A1
公开(公告)日:2008-08-14
A grease composition comprising at least one polymer having a mesogen structure in the principal chain or in the side chain(s) thereof, and at least one viscous agent is disclosed. A viscous agent which is a discotic compound having, in the molecule thereof, a discotic core and three or more side chain groups radially extended from said discotic core is also disclosed. The discotic core and/or said side chain groups has at least one tautomeric group therein, and at least one side chain group of said three or more side chains has, at the end portion thereof, a long chain group in which 20 or more atoms selected from the group consisting of oxygen, carbon, nitrogen, silicon and sulfur atoms are linked in a straight-chain-like manner or in a branched manner.
굽은-핵 이메소겐 화합물 및 그 제조방법
申请人:KUMOH NATIONAL INSTITUTE OF TECHNOLOGY INDUSTRY-ACADEMIC COOPERATION FOUNDATION 금오공과대학교 산학협력단(220040350282) BRN ▼513-82-07067
公开号:KR20160126287A
公开(公告)日:2016-11-02
본 발명은 굽은-핵 이메소겐 화합물 및 그 제조방법에 관한 것으로, 보다 상세하게는 5개의 벤젠을 가지며, 한쪽 말단의 벤젠에는 불소가 치환된 굽은 형태의 일메소겐 화합물과, 상기 일메소겐 화합물과 비대칭성 굽은 형태를 가지는 일메소겐 화합물을 알킬 유연격자를 이용하여 연결한 신규한 굽은-핵 이메소겐 화합물 및 그 제조방법에 관한 것이다. 본 발명의 굽은-핵 이메소겐 화합물은 네마틱상의 변전(felxoelectric) 특성을 가져 고속응답특성을 보일 수 있으며, 전기/광학적 및 동력학적 특성이 우수한 강유전성 액정디스플레이의 실현을 위한 원천소재로의 사용이 가능하다.