Six novel selenium-containing polyphenolic acid esters were synthesized and evaluated as antioxidants and 5-lipoxygenase inhibitors. Synthesis of the title compounds involved the Mitsunobu reaction of polyphenolic acids (4—8, 14) with 2-phenylselenoethanol (3). Compounds 22, 23, and 25 were found to be very effective antioxidants and 5-lipoxygenase inhibitors with activity comparable to or better than caffeic acid (3,4-dihydroxycinnamic acid) phenethyl ester (CAPE).
POLYMERIZABLE LIQUID CRYSTAL COMPOUND, COMPOSITION FOR OPTICAL FILM, AND OPTICAL FILM, COMPENSATION FILM, ANTIREFLECTIVE FILM, AND DISPLAY DEVICE INCLUDING THE SAME
申请人:SAMSUNG ELECTRONICS CO., LTD.
公开号:US20170183286A1
公开(公告)日:2017-06-29
A polymerizable liquid crystal compound represented by Chemical Formula 1:
wherein in Chemical Formula 1, groups and variables are the same as defined in the detailed description.
During our systematic studies on the arginine vasopressin receptor V1a-antagonistic activity of 1-(1-benzoyl substituted 4-piperidyl)-3, 4-dihydro-2(1H)-quinolinones, we found a general substituent effect on the benzene ring. Hydrogen-bonding ability at the ortho position was especially important for enhancement of the affinity of multi-substituted analogs. Details of the syntheses and structuer-activity relationships for this series are presented.
Synthesis of 2-Fluoro-1,4-benzoxazines and 2-Fluoro-1,4-benzoxazepin-5-ones by Exploring the Nucleophilic Vinylic Substitution (S<sub>N</sub>V) Reaction of <i>gem</i>-Difluoroenamides
作者:Tamara Meiresonne、Guido Verniest、Norbert De Kimpe、Sven Mangelinckx
DOI:10.1021/acs.joc.5b00507
日期:2015.5.15
novel structural units which have been explored as precursors in heterocyclic synthesis. The presence of two fluorine atoms at the β-position of the enamide moiety endows unique electrophilic reactivity. Treatment of these enamides with oxygen nucleophiles gives rise to a nucleophilicvinylicsubstitution (SNV) reaction, which was directed toward 2-fluoro-1,4-benzoxazines and 2-fluoro-1,4-benzoxazepin-5-ones
Analgesic and anti-inflammatory compounds and compositions containing
申请人:The Procter & Gamble Company
公开号:US04276430A1
公开(公告)日:1981-06-30
Dihydroxybenzoic acid derivatives and compositions containing same are useful for topical application to the skin as well as for systemic administration. The compounds are especially effective for providing an analgesic, anti-pyretic, and anti-inflammatory effect.