Activated factor XI (FXIa) inhibitors are anticipated to combine anticoagulant and profibrinolytic effects with a low bleeding risk. This motivated a structure aided fragment based lead generation campaign to create novel FXIa inhibitor leads. A virtual screen, based on docking experiments, was performed to generate a FXIa targeted fragment library for an NMR screen that resulted in the identification
Synthesis and biological activities of some new fluorinated coumarins and 1-aza coumarins
作者:Rajesh G. Kalkhambkar、Geeta M. Kulkarni、Chandrappa M. Kamanavalli、N. Premkumar、S.M.B. Asdaq、Chung Ming Sun
DOI:10.1016/j.ejmech.2007.08.007
日期:2008.10
A series of new fluorinated coumarins and 1-aza coumarins have been synthesized and the presence of fluorine in these molecules and its effect on their anti-microbial, anti-inflammatory and analgesic activities are discussed. The results of bioassay showed that these newly synthesized compounds containing fluorine exhibit moderate analgesic and excellent anti-inflammatory and potential anti-bacterial
Click chemistry approach for the regioselective synthesis of iso-indoline-1,3-dione-linked 1,4 and 1,5 coumarinyl 1,2,3-triazoles and their photophysical properties
作者:Ashish Anand、Manohar V. Kulkarni
DOI:10.1080/00397911.2017.1283524
日期:2017.4.3
ABSTRACT Copper-catalyzed reaction of N-propargyl isoindoline-1,3-dione and 4-azidomethyl coumarins / 4-azidomethyl-1-aza coumarins under click chemistry conditions afforded 1,4-disubstituted 1,2,3-triazoles, whereas ruthenium catalysis yielded isomeric 1,5-disubstituted 1,2,3-triazoles. The two regioisomers have been distinguished by NOE studies. UV absorption for a given pair of isomers exhibited
摘要 在点击化学条件下,N-炔丙基异吲哚啉-1,3-二酮和 4-叠氮甲基香豆素/4-叠氮甲基-1-氮杂香豆素在铜催化下反应得到 1,4-二取代 1,2,3-三唑,而钌催化产生异构的 1,5-二取代的 1,2,3-三唑。两种区域异构体已通过 NOE 研究区分开来。一对给定异构体的紫外吸收显示出相似的趋势,而荧光测量显示出相当大的差异。还对叠氮化物与铜和钌的相互作用进行了光物理研究。图形概要
Cu (I) Catalyzed One Pot S<sub>N</sub>
-Click Reactions of Halogenated Coumarins and 1-<i>aza</i>
-coumarins
作者:Hrishikesh M. Revankar、Manohar V. Kulkarni
DOI:10.1002/jhet.3090
日期:2018.2
A onepot three component, copper catalyzed azide‐alkyne cycloaddition reaction has been employed for the synthesis of bis‐coumarinyl triazoles (A–D) using 4‐chloro, 4‐bromomethyl, 3‐bromoacetyl and 4‐bromomethyl‐1‐aza‐coumarins (I–IV), sodium azide, and coumarin propargyl ethers (V–IX) in moderate yields.
Drug-induced modifications of the immune response. 12. 4,5-Dihydro-4-oxo-2-(substituted amino)-3-furancarboxylic acids and derivatives as novel antiallergic agents
作者:Robert A. Mack、Walter I. Zazulak、Lesley A. Radov、Jane E. Baer、Jeffrey D. Stewart、Philip H. Elzer、C. Richard Kinsolving、Vassil S. Georgiev
DOI:10.1021/jm00118a008
日期:1988.10
The synthesis of a series of novel 4,5-dihydro-4-oxo-2-(substituted amino)-3-furancarboxylic acids, salts, esters, and amides is described. The title compounds when tested in the mediator-induced dermal vascular permeability and active anaphylaxis assays in rats demonstrated moderate to potent antiallergic activity. The [2-trans-(4-methylphenyl)cyclopropyl]amino analogue 53 emerged as the most active