Biomimetic Synthesis of Functionalized γ-Resorcylates from Dioxinone Derivatives
作者:Peter S. Blencowe、Anthony G. M. Barrett
DOI:10.1002/ejoc.201402473
日期:2014.8
Biomimetic syntheses of functionalizedγ-resorcylatesfrom 2,2,6-trimethyl-4H-1,3-dioxin-4-one derivatives are reported. Cross metathesis of 2,2-dimethyl-6-vinyl-4H-1,3-dioxin-4-one with homoallylic esters or aldol reactions of tert-butyl or benzyl esters with 1-(2,2-dimethyl-4-oxo-4H-1,3-dioxin-6-yl)-acetone and related ketones followed by aromatization under mild Appel-type reaction conditions gave
Design, Synthesis, and Herbicidal Activity of Pyrimidine–Biphenyl Hybrids as Novel Acetohydroxyacid Synthase Inhibitors
作者:Ke-Jian Li、Ren-Yu Qu、Yu-Chao Liu、Jing-Fang Yang、Ponnam Devendar、Qiong Chen、Cong-Wei Niu、Zhen Xi、Guang-Fu Yang
DOI:10.1021/acs.jafc.8b00665
日期:2018.4.18
class of herbicides. In a continuing effort to discover novel AHAS inhibitors to overcome weed resistance, a series of pyrimidine–biphenyl hybrids (4aa–bb and 5aa–ah) were designed and synthesized via a scaffold hopping strategy. Among these derivatives, compounds 4aa (Ki = 0.09 μM) and 4bb (Ki = 0.02 μM) displayed higher inhibitory activities against Arabidopsis thaliana AHAS than those of the controls
杂草对乙酰羟酸合酶(EC 2.2.1.6,AHAS)抑制剂的抗性问题已成为此类除草剂应用的最大障碍之一。为了不断发现新的AHAS抑制剂以克服杂草抗性,通过脚手架跳跃策略设计并合成了一系列嘧啶-联苯杂化物(4AA - BB和5aa - ah)。在这些衍生物中,化合物4AA(K i = 0.09μM)和4BB(K i = 0.02μM)对拟南芥AHAS的抑制活性比对照双嘧菌(K i = 0.54μM)和氟美沙仑(K i = 0.38μM)。值得注意的是,化合物4AA,4BB,5ah和5ag表现出优异的出苗后除草活性,并且在37.5–150 g活性成分(ai)/公顷的施用量下具有广泛的杂草控制能力。此外,4AA和4BB显示对AHAS抑制剂抗性更高的除草活性播娘蒿,水苋菜属根结线虫,和相应的敏感杂草比双嘧苯甲酸在0.94-0.235克活性成分/公顷。因此,嘧啶-联苯基序和铅化合物4AA和4BB 在
RESORCYLIC ACID LACTONE COMPOUNDS
申请人:KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
公开号:US20140155635A1
公开(公告)日:2014-06-05
Disclosed are a novel resorcyclic acid lactone compound with inhibitory activity against protein kinases, a pharmaceutically acceptable salt thereof, a method for the synthesis thereof, and a pharmaceutical composition for the treatment and prevention of various cancer diseases comprising the same as an active ingredient. The novel resorcyclic acid lactone compound is useful as a therapeutic for cancer diseases, especially blood cancer, inter alia, acute myeloid leukemia (AML).
Hydroxyl-Directed Cross-Coupling: A Scalable Synthesis of Debromohamigeran E and Other Targets of Interest
作者:Thomas P. Blaisdell、James P. Morken
DOI:10.1021/jacs.5b05477
日期:2015.7.15
A hydroxyl functional group positioned beta to a pinacol boronate can serve to direct palladium-catalyzed cross-coupling reactions. This feature can be used to control the reaction site in multiply borylated substrates and can activate boronates for reaction that would otherwise be unreactive.