In vitro antiplasmodial activity of triazole-linked chloroquinoline derivatives synthesized from 7-chloro-N-(prop-2-yn-1-yl)quinolin-4-amine
摘要:
The synthesis and in vitro evaluation of novel triazole-linked chloroquinoline derivatives as potential antiplasmodial agents against Plasmodium falciparum is reported. The 15 synthesized target compounds were obtained by means of a copper(I)-mediated click reaction between a variety of 1,2- and 1,3-azidoamines and 7-chloro-N-(prop-2-yn-1-yl) quinolin-4-amine in moderate to good yields (53-85%). The compounds were screened for antiplasmodial activity against NF54 chloroquine-sensitive and Dd2 chloroquine-resistant strains, alongside chloroquine and artesunate as reference compounds. Six of the test compounds revealed a 3-5 fold increase in antiplasmodial activity against chloroquine-resistant strain Dd2 compared to chloroquine. Among the six compounds with good antiplasmodial activity, a reduced cross-resistance relative to artesunate (>3 fold in comparison to chloroquine) was observed, mainly in derivatives that incorporated chloroquine-resistance reversing pharmacophores. A general trend for reduced chloroquine cross-resistance was also detected among 12 out of the 15 compounds tested. (C) 2015 Elsevier Ltd. All rights reserved.
Rationally-Designed<i>S-</i>Chiral Bissulfinamides as Highly Enantioselective Organocatalysts for Reduction of Ketimines
作者:Dong Pei、Yu Zhang、Siyu Wei、Meng Wang、Jian Sun
DOI:10.1002/adsc.200700504
日期:2008.3.7
example of S-chiral organocatalysts, that are highly efficient and enantioselective in substoichometric amounts, and which use a chiral monosulfinamide group as Lewis base to activate trichlorosilane (HSiCl3) to reduce N-arylketimines. A plausible mechanism involving two molecules of the monosulfinamde catalyst for the activation of HSiCl3 prompted us to design S-chiral bissulfinamides as new catalysts
The present invention relates to compounds of formula (I)
wherein:
Ar1 or Ar2 is an optionally substituted indole, and the other group is an optionally substituted aromatic or heteroaromatic group, preferably an optionally substituted indole,
X is O or S, and
R2 is H, hydroxy, amino, C1-6alkyl, hydroxyC1-6alkyl or aminoC1-6alkyl,
and salts and solvates thereof and solvates of such salts,
and the use of such compounds in medical therapies.
Synthesis and characterization of a new series of [12]aneN3 type macrocycles. Structures of two protonated metal-free ligands
作者:Patricia Hubsch-Weber、Marie-Thérèse Youinou
DOI:10.1016/s0040-4039(97)00241-4
日期:1997.3
The synthesis of a family of monotopic and ditopic ligands possessing a [12]aneN3 synthon and different spacers is described. The characterization of two of them by X-ray diffraction is also reported.
Synthesis and biological evaluation of a series of novel N- or O-fluoroalkyl derivatives of tropane: potential positron emission tomography (PET) imaging agents for the dopamine transporter
作者:Xiao-Hui Gu、Rushi Zong、Nora S Kula、Ross J Baldessarini、John L Neumeyer
DOI:10.1016/s0960-894x(01)00626-6
日期:2001.12
fluoroalkyl-containing tropane derivatives was synthesized, and their binding affinities for the dopamine transporter (DAT), serotonin transporter (SERT), and norepinephrine transporter (NET) were determined via competitive binding assays. Among these derivatives, the fluoropropyl ester of beta-CIT (19), the fluoroethyl ester of beta-CIT (20), the N-fluoropropyl derivative of beta-CBT (12), and the fluoropropyl