1-(Fluoroalkylidene)-1,1-bisphosphonic acids are potent and selective inhibitors of the enzymatic activity of Toxoplasma gondii farnesyl pyrophosphate synthase
Copper-mediated 1,4-Conjugate Addition of Boronic Acids and Indoles to Vinylidenebisphosphonate leading to<i>gem</i>-Bisphosphonates as Potential Antiresorption Bone Drugs
wide range of gem‐bisphosphonate tetraethyl esters as precursors for bisphosphonic acids, which are potent inhibitors of bone resorption, bearing alkyl, aryl, and indole substituents in the β position were prepared through the CuII‐catalyzed 1,4‐conjugate addition of boronicacids and indoles to vinylidenebisphosphonate tetraethyl ester.
Optimum conditions for the solid–liquid phase alkylation of tetraethyl methylenebisphosphonate are dependent on the nature of the alkyl halide. The benzylation with benzyl bromide takes place efficiently in boiling acetonitrile in the presence of potassium carbonate and a phase transfer catalyst. The ethylation with ethyl iodide was best accomplished under solventless microwave conditions in the presence
PHOSPHONATED RIFAMYCINS AND USES THEREOF FOR THE PREVENTION AND TREATMENT OF BONE AND JOINT INFECTIONS
申请人:Dietrich Evelyne
公开号:US20110178001A1
公开(公告)日:2011-07-21
The present invention relates to phosphonated Rifamycins, and methods of making and using such compounds. These compounds are useful as antibiotics for prophylaxis and/or the treatment of bone and joint infections, especially for the prophylaxis and/or treatment of osteomyelitis.
Bisphosphonates derived from fatty acids are potent inhibitors of Trypanosoma cruzi farnesyl pyrophosphate synthase
作者:Sergio H. Szajnman、Andrea Montalvetti、Youhong Wang、Roberto Docampo、Juan B. Rodriguez
DOI:10.1016/s0960-894x(03)00663-2
日期:2003.10
Studies on the mode of action of a series of bisphosphonates derived from fatty acids, which had previously proved to be potent inhibitors against Trypanosoma cruzi proliferation in in vitro assays, have been performed. Some of these drugs proved to be potent inhibitors against the intracellular form of the parasite, exhibiting IC50 values at the low micromolar level. As bisphosphonates are FDA clinically approved for treatment of bone resorption disorders, their potential innocuousness makes them good candidates to control tropical diseases. (C) 2003 Elsevier Ltd. All rights reserved.