pharmacological study of the in vivo anticoagulant effect of the derivatives with respect to warfarin showed that the synthesized compounds have different anticoagulantactivities. The most prospective compounds are 3‐(3′‐hydroxybenzylidene)‐2,4‐diketochroman 4 and 3,3′‐(2‐pyridylmethylene)‐bis‐4‐hydroxy‐2H‐1‐benzopyran‐2‐one 11 with low toxicity and dose‐dependent anticoagulantactivity in vivo.
Background: Biscoumarin scaffolds are known for their promising pharmacological properties. These compounds have not been studied for their activity against tuberculosis strains. Objective: Unveil the antitubercular properties of biscoumarin scaffolds. Methods: Biscoumarin derivatives (3a-3l) were synthesized using lemon juice as a catalyst and were investigated for their in-vitro anti-tubercular activity
背景:双香豆素支架因其有希望的药理特性而闻名。尚未研究这些化合物对结核菌株的活性。 目的:揭示双香豆素支架的抗结核特性。 方法:以柠檬汁为催化剂合成双香豆素衍生物(3a-3l),并使用微孔板阿拉法蓝测定法(MABA)研究其对结核分枝杆菌H 37 R v菌株的体外抗结核活性。通过分子对接研究,使用InhA和PDB-ID:2NSD作为Hsub> 37中的靶受体,研究了它们的结合相互作用。
Design and synthesis of bis-coumarinyl methanes from 4-hydroxy-coumarin and aldehydes catalysed by Amberlyst 15 via dual C–C coupling: introducing coumarin based thin film organic nano-materials for memory devices
derivatives was investigated by condensing a series of aldehydes with 4-hydroxy coumarin in the presence of Amberlyst 15 catalyst under refluxing conditions in ethanol–water (1:1). This one pot domino Knoevenagel condensation/Micheal addition reaction provides excellent yield of bis-coumarinyl methane derivatives with lots of advantages like shorter reaction time, eco-friendly reaction medium, simple work up
Sulfated titania catalyzed water mediated efficient synthesis of dicoumarols—a green approach
作者:Bikash Karmakar、Anupam Nayak、Julie Banerji
DOI:10.1016/j.tetlet.2012.06.024
日期:2012.8
An efficient, mild, and environmental friendly method has been developed for the synthesis of dicoumarols in water over Lewis and Bronsted acid catalyst sulfated titania (TiO2/SO42-). The method involves the condensation of various aromatic and aliphatic aldehydes with 4-hydroxycoumarin. It affords the corresponding product in high yield with short reaction times employing a very low loading of catalyst. The catalyst was reused several times without significant change in activity. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
Eckstein et al., Roczniki Chemii, 1958, vol. 32, p. 801,805, 806