33973-22-7Relevant academic research and scientific papers
Antimalarial and structural studies of pyridine-containing inhibitors of 1-deoxyxylulose-5-phosphate reductoisomerase
Xue, Jian,Diao, Jiasheng,Cai, Guobin,Deng, Lisheng,Zheng, Baisong,Yao, Yuan,Song, Yongcheng
, p. 278 - 282 (2013/03/29)
1-Deoxy-d-xylulose-5-phosphate reductoisomerase (DXR) in the nonmevalonate isoprene biosynthesis pathway is a target for developing antimalarial drugs. Fosmidomycin, a potent DXR inhibitor, showed safety as well as efficacy against Plasmodium falciparum malaria in clinical trials. On the basis of our previous quantitative structure-activity relationship (QSAR) and crystallographic studies, several novel pyridine-containing fosmidomycin derivatives were designed, synthesized, and found to be highly potent inhibitors of P. falciparum DXR (PfDXR) having Ki values of 1.9-13 nM, with the best one being ~11× more active than fosmidomycin. These compounds also potently block the proliferation of multidrug resistant P. falciparum with EC 50 values as low as 170 nM. A 2.3 A? crystal structure of PfDXR in complex with one of the inhibitors is reported, showing that the flexible loop of the protein undergoes conformational changes upon ligand binding and a hydrogen bond and favorable hydrophobic interactions between the pyridine group and the PfDXR account for the enhanced activity.
ORGANOPHOSPHORIC DERIVATIVES USEFUL AS ANTI-PARASITIC AGENTS
-
Page/Page column 27-28, (2008/06/13)
The present invention relates to novel phosphonic acid compounds having the structural formula (I): wherein: (a) R is a group of 1 to 5 substituents independently selected from the group consisting of fluoro, chloro, bromo, C1-4 alkoxy, C1
