Designing novel inhibitors against falcipain-2 of Plasmodium falciparum
摘要:
Coumarin containing pyrazoline derivatives have been synthesized and tested as inhibitors of in vitro development of a chloroquine-sensitive (MRC-02) and chloroquine-resistant (RKL-2) strain of Plasmodium falciparum and in vivo Plasmodium berghei malaria. Docking study was also done on cysteine protease falcipain-2 which showed that the binding pose of C-14 molecule and epoxysuccinate, inhibitor of falcipain-2, binds in the similar pattern. The most active antimalarial compound was 3-(1-benzoyl-5-(4-flurophenyl)-4,5-dihydro-1H-pyrazol-3yl)-7-(diethyamino)-2H-chromen-2- one C-14, with an IC50 of 4.21 mu g/ml provided complete protection to the infected mice at 24 mg/kg X 4 days respectively. (C) 2018 Elsevier Ltd. All rights reserved.
Synthesis and Fluorescent Properties of Coumarin–Chalcone Hybrids
作者:Fang Yang、Hongli Fan、Ziyan Xue、Xiaolong Wang
DOI:10.3184/174751917x15035711817504
日期:2017.9
Four coumarin–chalcone hybrids were synthesised utilising condensation of acetylcoumarin with three benzaldehydes and cinnamaldehyde, respectively. Moreover, the absorption and fluorescence spectra of these synthesised compounds in dichloromethane were measured.
effects. The compound 1a molecules have π···πinteractions proved by short distance of 3.61(2) Å between the centroids of six-membered cycles and weak intermolecular C–H…O hydrogen bonds, which link the π···π dimers into columns. According to quantum chemical calculations by TD DFT method with the B3LYP functional, in the def2-TZVP basis, intermolecular π···πinteractions lead to strong red-shift (around
Discovery of a novel fluorescent HSP90 inhibitor and its anti-lung cancer effect
作者:Su-Yun Bai、Xi Dai、Bao-Xiang Zhao、Jun-Ying Miao
DOI:10.1039/c4ra01800a
日期:——
A novel fluorescent HSP90 inhibitor with strong growth inhibitory effects on lung cancer cells was developed.
开发出一种新型荧光HSP90抑制剂,对肺癌细胞具有强烈的生长抑制作用。
Fluorescence turn-on probe for biothiols: intramolecular hydrogen bonding effect on the Michael reaction
作者:Hyun-Joon Ha、Doo-Ha Yoon、Seokan Park、Hae-Jo Kim
DOI:10.1016/j.tet.2011.08.002
日期:2011.10
Weakly fluorescent coumarinyl enones are rapidly transformed into strongly fluorescent molecules through the Michael addition reaction of a thiol group, where an intramolecular hydrogen bond plays a critical role in the reaction rate. The molecular probe (3) with an ortho hydroxyl group to a carbonyl group exhibits a rapid response toward GSH owing to the stabilization of the possible oxyanion intermediate by a preferable intramolecular hydrogen bond. Probe 1 with an o-hydroxyl group also showed a moderately enhanced reaction rate with GSH and soluble in HEPES buffer to exhibit a highly selective and sensitive fluorescence turn-on response toward biothiols. (C) 2011 Elsevier Ltd. All rights reserved.
Designing novel inhibitors against falcipain-2 of Plasmodium falciparum
作者:Himangini、Dharam Pal Pathak、Vidushi Sharma、Sachin Kumar
DOI:10.1016/j.bmcl.2018.03.058
日期:2018.5
Coumarin containing pyrazoline derivatives have been synthesized and tested as inhibitors of in vitro development of a chloroquine-sensitive (MRC-02) and chloroquine-resistant (RKL-2) strain of Plasmodium falciparum and in vivo Plasmodium berghei malaria. Docking study was also done on cysteine protease falcipain-2 which showed that the binding pose of C-14 molecule and epoxysuccinate, inhibitor of falcipain-2, binds in the similar pattern. The most active antimalarial compound was 3-(1-benzoyl-5-(4-flurophenyl)-4,5-dihydro-1H-pyrazol-3yl)-7-(diethyamino)-2H-chromen-2- one C-14, with an IC50 of 4.21 mu g/ml provided complete protection to the infected mice at 24 mg/kg X 4 days respectively. (C) 2018 Elsevier Ltd. All rights reserved.